Component

java.lang.Object
- ohos.agp.components.Component

直接已知子类:

ComponentContainer, Image, IndexBar, PageSliderIndicator, ProgressBar, SurfaceProvider, Text, TextureComponentEx, TextureProvider, WebView
```
public class Component
extends Object
```
Provides basic components for a user interface (UI).
Each component occupies a rectangular area on the screen and is responsible for drawing and event processing in this area. Component is the base class for controls, which are used to create interactive UI components. Its child class ComponentContainer is the base class for all layouts, which defines layout properties for other components or component groups.

从以下版本开始:

3

嵌套类概要

嵌套类
限定符和类型	类	说明
`static interface`	`Component.BindStateChangedListener`	Provides callbacks to be invoked when a component is bound to or detached from its window.
`static interface`	`Component.CanAcceptScrollListener`	Provides a listener to be invoked to decide a scrolling gesture can be accepted or not.
`static interface`	`Component.ClickedListener`	Provides callbacks to be invoked when a component is clicked.
`static interface`	`Component.ComponentStateChangedListener`	Provides a callback for state change events of a component.
`static interface`	`Component.ContourRefreshedListener`	Provides a listener for callbacks used to set a custom `Contour` object for a component.
`static class`	`Component.DefSpeechEventListener`	Provides a default callback to be invoked when a voice event is bound to a component.
`static interface`	`Component.DoubleClickedListener`	Provides callbacks to be invoked when a component is double-clicked.
`static class`	`Component.DragFeedbackProvider`	Provides an image (called a "drag shadow") that the system displays during the drag and drop operation.
`static interface`	`Component.DraggedListener`	Provides callbacks to be invoked when a drag event is dispatched to a component by a gesture recognizer.
`static interface`	`Component.DrawTask`	Implements a draw task.
`static interface`	`Component.EditEventListener`	Provides listeners to process editing events triggered by keyboard shortcuts when they are distributed to components.
`static interface`	`Component.EstimateSizeListener`	Provides an interface for customizing the size (width/height) estimating process.
`static class`	`Component.EstimateSpec`	Defines the measure specifications of a component.
`static class`	`Component.FadeEffectEnum`	Enumerates the types of component indicators to which the fade-out effect can apply.
`static interface`	`Component.FocusChangedListener`	Provides a callback to be invoked when the focus state of a component changes.
`static interface`	`Component.ForwardHoverListener`	Provides a callback to be invoked before a mouse hover event is forwarded to child component.
`static interface`	`Component.ForwardTouchListener`	Provides a callback to be invoked before a touch event is forwarded to child component.
`static class`	`Component.GestureType`	Enumerates gesture type.
`static interface`	`Component.HoverEventListener`	Provides a callback to be invoked when a hover event is dispatched from a component.
`static interface`	`Component.KeyEventListener`	Provides a callback to be invoked when a key event is dispatched from a component.
`static class`	`Component.LayoutDirection`	Enumerates horizontal layout directions.
`static interface`	`Component.LayoutRefreshedListener`	Provides a callback to be invoked when the component is laid out again.
`static interface`	`Component.LongClickedListener`	Provides a callback to be invoked when a long touch event is dispatched from a component.
`static class`	`Component.MeasureSpec`	已过时。 This change is effective since API version 6. Replaced by `EstimateSpec`
`static interface`	`Component.MouseEventListener`	Provides a callback to be invoked when a mouse event is dispatched from a component.
`static interface`	`Component.MousePointerStyleListener`	Provides a listener to observe mouse pointer style changes.
`static interface`	`Component.OnDragListener`	Callback to be invoked when a drag event is dispatched to a component.
`static interface`	`Component.RotationEventListener`	Provides a callback to be invoked when a rotation event is dispatched from a component.
`static interface`	`Component.ScaledListener`	Provides callbacks for scale events of a component.
`static interface`	`Component.ScrolledListener`	Provides a callback to be invoked when a scroll event is dispatched from a component.
`static class`	`Component.ShadowDevice`	Indicates the shadow device of the window.
`static class`	`Component.ShadowMode`	Indicates the shadow mode of the window.
`static class`	`Component.ShadowSize`	Indicates the shadow size of the window.
`static interface`	`Component.SpeechEventListener`	Provides a callback to be invoked when a voice event is bound to a component.
`static interface`	`Component.TouchEventListener`	Provides a callback to be invoked when a touch event is dispatched to a component.
`static interface`	`Component.UnconsumedKeyEventListener`	Provides a listener to dispatch keyboard event if it hasn't been consumed.
`static class`	`Component.VoiceEvent`	Provides voice events for a component.

字段概要

字段
限定符和类型	字段	说明
`static int`	`ACCESSIBILITY_ADAPTABLE`	Indicates that this component can be accessed.
`static int`	`ACCESSIBILITY_DISABLE`	Indicates that this component cannot be accessed.
`static int`	`ACCESSIBILITY_ENABLE`	Indicates that this component is enabled.
`static int`	`AXIS_X`	Indicates the x-axis.
`static int`	`AXIS_Y`	Indicates the y-axis.
`static Component.ContourRefreshedListener`	`CONTOUR_BACKGROUND`	Default ContourRefreshedListener for Component.
`static Component.ContourRefreshedListener`	`CONTOUR_BORDER`	Providers a contour that match rectangle border of component.
`static Component.ContourRefreshedListener`	`CONTOUR_PADDING_BORDER`	Providers a contour that match rectangle padding border of component.
`static float`	`DEFAULT_SCALE`	Indicates the default zoom factor for scaling a component.
`static int`	`DRAG_DOWN`	Indicates the scroll bar is dragged downwards.
`static int`	`DRAG_HORIZONTAL`	Indicates that the scroll bar is dragged horizontally.
`static int`	`DRAG_HORIZONTAL_VERTICAL`	Indicates that the scroll bar is dragged horizontally and vertically.
`static int`	`DRAG_LEFT`	Indicates that the scroll bar is dragged leftwards.
`static int`	`DRAG_RIGHT`	Indicates that the scroll bar is dragged rightwards.
`static int`	`DRAG_UP`	Indicates that the scroll bar is dragged upwards.
`static int`	`DRAG_VERTICAL`	Indicates that the scroll bar is dragged vertically.
`static int`	`EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED`	Represents an event indicating that the accessibility focus is obtained.
`static int`	`EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED_CLEAR`	Represents an event indicating that the accessibility focus is cleared.
`static int`	`EVENT_TYPE_COMPONENT_CLICKED`	Represents an event indicating that the component is clicked.
`static int`	`EVENT_TYPE_COMPONENT_FOCUSED`	Represents an event indicating that the component gets the focus.
`static int`	`EVENT_TYPE_COMPONENT_LONG_CLICKED`	Represents an event indicating that the component is long pressed.
`static int`	`EVENT_TYPE_COMPONENT_SCROLLED`	Represents an event indicating that the component is scrolled.
`static int`	`EVENT_TYPE_COMPONENT_SELECTED`	Represents an event indicating that the component is selected.
`static int`	`EVENT_TYPE_COMPONENT_TEXT_UPDATE`	Represents an event indicating that the text in the Text component is changed.
`static int`	`EVENT_TYPE_NOTICE`	Represents an event indicating that the application sends a notice.
`static int`	`EVENT_TYPE_NOTIFICATION_STATE_UPDATE`	Represents an event indicating that a notification is displayed.
`static int`	`EVENT_TYPE_TOAST_SHOW`	Represents an event indicating that a toast is displayed.
`static int`	`EVENT_TYPE_WINDOW_STATE_UPDATE`	Represents an event indicating that the window state is updated.
`static int`	`FOCUS_ADAPTABLE`	The component determines focusability by itself.
`static int`	`FOCUS_DISABLE`	The component does not need keystrokes.
`static int`	`FOCUS_ENABLE`	The component needs keystrokes.
`static int`	`FOCUS_NEXT`	Moves focus to the next clickable item.
`static int`	`FOCUS_PREVIOUS`	Moves focus to the previous clickable item.
`static int`	`FOCUS_SIDE_BOTTOM`	Moves focus down.
`static int`	`FOCUS_SIDE_LEFT`	Moves focus to the left.
`static int`	`FOCUS_SIDE_RIGHT`	Moves focus to the right.
`static int`	`FOCUS_SIDE_TOP`	Moves focus up.
`static int`	`HIDE`	The component is invisible and does not occupy any space for layout purposes.
`static int`	`HORIZONTAL`	Indicates the horizontal orientation mode.
`static int`	`ID_DEFAULT`	Default ID of a component.
`static int`	`INHERITED_MODE`	Indicates that the component uses its parent component's showing mode.
`static int`	`INVISIBLE`	The component is invisible but still occupies space for layout purposes.
`protected Element`	`mBackgroundElement`	Indicates the element object drawn in a component's background.
`protected Canvas`	`mCanvasForTaskOverContent`	The canvas used for custom drawing task between content and foreground.
`protected Canvas`	`mCanvasForTaskUnderContent`	The canvas used for custom drawing task between background and content.
`protected ComponentParent`	`mComponentParent`	Indicates the parent layout for a component.
`protected Context`	`mContext`	Indicates the context.
`protected Component.DrawTask`	`mDrawTaskOverContent`	Customizes a drawing task between the content and the foreground.
`protected Component.DrawTask`	`mDrawTaskUnderContent`	Customizes a drawing task between the content and the background.
`protected Component.EstimateSizeListener`	`mEstimateSizeListener`	Customizes component's width and height during component's estimating size process
`protected Element`	`mForegroundElement`	Indicates the element object drawn in a component's foreground.
`protected Component.ForwardHoverListener`	`mForwardHoverListener`	Indicates the callback invoked when a mouse hover event is forwarded.
`protected Component.HoverEventListener`	`mHoverEventListener`	Indicates the callback invoked when receiving a mouse hover event.
`protected Component.KeyEventListener`	`mKeyEventListener`	Indicates the callback invoked when focused component receiving a key event.
`protected Component.MouseEventListener`	`mMouseEventListener`	Indicates the callback invoked when receiving a mouse event.
`protected float[]`	`mPosition`	Creates the float value for a position.
`protected Component.RotationEventListener`	`mRotationEventListener`	Indicates the callback invoked when receiving a rotation event.
`protected ShadowElement`	`mShadowElement`	Indicates the element object drawn in a component's shadowstyle.
`protected Component.UnconsumedKeyEventListener`	`mUnconsumedKeyEventListener`	Indicates the callback invoked when receiving an unconsumed key event.
`static int`	`OVAL_MODE`	Indicates that the component content is displayed in an ellipse.
`static int`	`OVAL_SCROLL_BAR_MODE`	Indicates that the scrollbar is displayed as an ellipse.
`protected static int`	`POSITION_X_INDEX`	The X-axis coordinate in the position array.
`protected static int`	`POSITION_Y_INDEX`	The Y-axis coordinate in the position array.
`static int`	`RECT_MODE`	Indicates that the component content is displayed in a rectangle.
`static int`	`RECT_SCROLL_BAR_MODE`	Indicates that the scrollbar is displayed as a rectangle.
`static int`	`SCROLL_AUTO_STAGE`	Indicates that the component scrolls inertially in response to a dedicated operation (for example, fling or rebounding).
`static int`	`SCROLL_IDLE_STAGE`	Indicates that scrolling has come to an end and the component is in the idle state.
`static int`	`SCROLL_NORMAL_STAGE`	Indicates that the component scrolls naturally in response to an external operation (for example, user touch input).
`static int`	`UNSPECIFIED_SCROLL_BAR_MODE`	Indicates that the mode of the scrollbar follows that of the showing component.
`static int`	`VERTICAL`	Indicates the vertical orientation mode.
`static int`	`VISIBLE`	The component is visible.

构造器概要

构造器
构造器	说明
`Component(Context context)`	Default constructor used to create a `Component` instance by using the default attribute set and style.
`Component(Context context, AttrSet attrSet)`	A constructor used to create a `Component` instance by using specified attribute set and default style after the XML file is parsed.
`Component(Context context, AttrSet attrSet, int resId)`	A constructor used to create a `Component` instance based on the context, attribute set, and default theme after the XML file is parsed.
`Component(Context context, AttrSet attrSet, String styleName)`	A constructor used to create a `Component` instance by using specified attribute set and specified style after the XML file is parsed.

方法概要

所有方法实例方法具体方法已过时的方法
限定符和类型	方法	说明
`void`	`addDrawTask(Component.DrawTask task)`	Adds a drawing task between the foreground and the component content.
`void`	`addDrawTask(Component.DrawTask task, int layer)`	Adds a draw task.
`void`	`addScrolledListener(Component.ScrolledListener listener)`	Adds a listener to listen for scrolling events reported when the scrolling stage or position of the component has changed.
`void`	`announceAccessibility(String text)`	Sets text for an accessibility event of the `TYPE_ANNOUNCEMENT` type.
`void`	`arrange(int left, int top, int width, int height)`	Positioning the component relatively to the parent layout.
`CornerMark`	`bindCornerMark()`	Sets the corner mark object to be displayed on top of the component.
`boolean`	`callOnClick()`	Calls the assigned OnClickListener.
`boolean`	`canScroll(int orientation)`	Checks whether the component can be scrolled in the specified direction.
`void`	`clearFocus()`	Requests giving up focus.
`AnimatorProperty`	`createAnimatorProperty()`	Creates a property animator object associated with a component.
`void`	`disableFadeEffect(Component.FadeEffectEnum fadeEffectEnum)`	Disables the fade-out effect of the scroll bar or boundary indicator when the component is not scrolled.
`protected void`	`dispatchRestoreState(PlainArray<Sequenceable> stateContainer)`	Distribute the state restore process to restore the states of this component and its child components.
`protected void`	`dispatchSaveState(PlainArray<Sequenceable> stateContainer)`	Distribute the state saving process to save the states of this component and its child components.
`void`	`draw(Canvas canvas)`	Draws this component and its child components on a canvas.
`void`	`enableCornerMark(boolean enable)`	Enables or disables the corner mark for the current component.
`void`	`enableFadeEffect(Component.FadeEffectEnum fadeEffectEnum)`	Enables the fade-out effect of the scroll bar or boundary indicator when the component is not scrolled.
`void`	`enableSaveState(boolean isEnabled)`	Sets whether this component and its child components can save their states.
`void`	`enableScrollBar(int direction, boolean enabled)`	Sets whether to enable the scroll bar for this component.
`void`	`estimateSize(int widthEstimatedConfig, int heightEstimatedConfig)`	Sets components's width and height sizes and requirements
`boolean`	`executeDoubleClick()`	Executes the double-click event occurring in this component.
`boolean`	`executeLongClick()`	Performs a long-click event in a component.
`<T extends Component> T`	`findComponentById(int id)`	Finds the component with the given ID.
`ComponentHolder`	`findComponentHolderById(int resId)`	Obtains the `ComponentHolder` instance using the resource ID.
`Component`	`findFocus()`	Obtains the component that currently has focus among its descendant components and itself.
`Component`	`findNextFocusableComponent(int direction)`	Finds the next component to take focus.
`boolean`	`findRequestNextFocus(int side)`	Finds the next component to gain focus and requests focus for it.
`int`	`getAccessibility()`	Obtains the accessibility state.
`String`	`getAccessibilityDescription()`	Obtains the accessibility description of this component.
`float`	`getAlpha()`	Obtains the alpha value of a component.
`float`	`getAltitude()`	Obtains the basic depth location of this component in the direction perpendicular to the screen.
`Element`	`getBackgroundElement()`	Obtains element in the component's background.
`int`	`getBaseLine()`	Obtains the height from the baseline of the text to the top of the component.
`int`	`getBottom()`	Obtains the bottom edge position of a component relative to the parent layout.
`float`	`getBoundaryFadeEffectBottomRate()`	Obtains the rate multiplied by the basic boundary width to obtain the bottom boundary width of the component's fade-effect area.
`float`	`getBoundaryFadeEffectLeftRate()`	Obtains the rate multiplied by the basic boundary width to obtain the left boundary width of the component's fade-effect area.
`float`	`getBoundaryFadeEffectRightRate()`	Obtains the rate multiplied by the basic boundary width to obtain the right boundary width of the component's fade-effect area.
`float`	`getBoundaryFadeEffectTopRate()`	Obtains the rate multiplied by the basic boundary width to obtain the top boundary width of the component's fade-effect area.
`float[]`	`getCenterZoomFactor()`	Obtains the zoom factor for scaling the center component item.
`boolean`	`getCentralScrollMode()`	Obtains the state of the central scroll mode.
`Component.ClickedListener`	`getClickedListener()`	Obtains a listener for monitoring click events of this component.
`boolean`	`getClipEnabled()`	Checks whether automatic clipping of this component is enabled when it exceeds its parent layout.
`CharSequence`	`getComponentDescription()`	Obtains the description of the content in a component.
`DimensFloat`	`getComponentMinSize()`	Obtains the possible minimum size of this component.
`ComponentParent`	`getComponentParent()`	Obtains the parent layout of a component.
`Rect`	`getComponentPosition()`	Obtains the component's position relative to the parent layout.
`DimensFloat`	`getComponentSize()`	Obtains the component size.
`Component.ComponentStateChangedListener`	`getComponentStateChangedListener()`	Obtains a listener for monitoring state changes of this component.
`ComponentTreeObserver`	`getComponentTreeObserver()`	Obtains the `ComponentTreeObserver` for the component.
`boolean`	`getContentEnable()`	Obtains whether the content of the component will be drawn.
`float[]`	`getContentPosition()`	Obtains the positions when drawing.
`float`	`getContentPositionX()`	Obtains the X-axis coordinate.
`float`	`getContentPositionY()`	Obtains the Y-axis coordinate.
`Context`	`getContext()`	Obtains the context object held by this component.
`Contour`	`getContour()`	Obtains the `Contour` object of the current component.
`Component.ContourRefreshedListener`	`getContourRefreshedListener()`	Obtains the listener for updates on the `Contour` object of a component.
`CornerMark`	`getCornerMark()`	Obtains the corner mark object of the component.
`float`	`getDragAcceptAngle()`	Obtains the deflection angle set for a horizontal or vertical drag recognizer.
`Component.DraggedListener`	`getDraggedListener()`	Obtains a listener for monitoring drag events of this component.
`Component.EditEventListener`	`getEditEventListener()`	Obtains the listener that observes the editing events that are triggered by keyboard shortcuts and distributed to this component.
`int`	`getEstimatedHeight()`	Returns the estimated height for component.
`int`	`getEstimatedWidth()`	Returns the estimated width for component.
`int`	`getFadeEffectBoundaryWidth()`	Obtains the boundary width of the component's fade-effect area.
`Color`	`getFadeEffectColor()`	Obtains the color displayed when producing the fade effect.
`int`	`getFocusable()`	Obtains the focusable setting of the component.
`boolean`	`getFocusBorderEnable()`	Checks whether the focus border is displayed when this component is in focus.
`int`	`getFocusBorderPadding()`	Obtains the padding between the focus border and this component.
`float[]`	`getFocusBorderRadius()`	Obtains the radii of the focus border's four corners.
`int`	`getFocusBorderWidth()`	Obtains the width of the focus border.
`Element`	`getForegroundElement()`	Obtains element in the component's foreground.
`int`	`getForegroundGravity()`	已过时。 This change is effective since API version 6. This method is redundant and is therefore deprecated.
`Component.ForwardHoverListener`	`getForwardHoverListener()`	Obtains a listener for forward mouse hover events of this component.
`Component.ForwardTouchListener`	`getForwardTouchListener()`	Obtains a listener for forward touch events of this component.
`int`	`getGesturePriority(Component.GestureType gestureType)`	Gets the priority of gestures.
`int`	`getHeight()`	Obtains the height of a component.
`int[]`	`getHorizontalPadding()`	Obtains the horizontal padding of this component.
`int[]`	`getHorizontalPosition()`	Obtains the component's horizontal position relative to the parent layout.
`Component.HoverEventListener`	`getHoverEventListener()`	Obtains a listener for monitoring hover events of this component.
`int`	`getId()`	Obtains the unique ID of the component.
`Component.KeyEventListener`	`getKeyEventListener()`	Obtains a listener for monitoring key events of this component.
`ComponentContainer.LayoutConfig`	`getLayoutConfig()`	Obtains the layout parameters associated with a component.
`Component.LayoutDirection`	`getLayoutDirection()`	Obtains the layout direction of this component.
`Component.LayoutDirection`	`getLayoutDirectionResolved()`	Obtains the resolved layout direction of this component.
`Component.LayoutRefreshedListener`	`getLayoutRefreshedListener()`	Obtains a listener for monitoring layout refresh of this component.
`int`	`getLeft()`	Obtains the left edge position of a component relative to the parent layout.
`int[]`	`getLocationOnScreen()`	Obtains the absolute position of a component on the screen.
`int`	`getMarginBottom()`	Obtains the bottom margin of this component.
`int`	`getMarginLeft()`	Obtains the left margin of this component.
`int`	`getMarginRight()`	Obtains the right margin of this component.
`int[]`	`getMargins()`	Obtains the left, top, right, and bottom margins of this component.
`int[]`	`getMarginsLeftAndRight()`	Obtains horizontal margins of this component.
`int[]`	`getMarginsTopAndBottom()`	Obtains vertical margins of this component.
`int`	`getMarginTop()`	Obtains the top margin of this component.
`Matrix`	`getMatrix()`	Obtains the conversion matrix of the current component.
`int`	`getMinHeight()`	Obtains the minimum possible height of the component.
`int`	`getMinWidth()`	Obtains the minimum possible width of the component.
`int`	`getMode()`	Obtains the showing mode of this component.
`int`	`getModeResolved()`	Obtains the display mode of the device holding this component.
`Component.MouseEventListener`	`getMouseEventListener()`	Obtains a listener for monitoring mouse events of this component.
`Component.MousePointerStyleListener`	`getMousePointerStyleListener()`	Obtains a listener for mouse pointer style changes.
`String`	`getName()`	Obtains the name of the component.
`int[]`	`getPadding()`	Obtains the padding of this component.
`int`	`getPaddingBottom()`	Obtains the bottom padding of the component.
`int`	`getPaddingEnd()`	Obtains the end padding of the component depending on its resolved layout direction.
`int`	`getPaddingLeft()`	Obtains the left padding of the component.
`int`	`getPaddingRight()`	Obtains the right padding of the component.
`int`	`getPaddingStart()`	Obtains the start padding of the component depending on its resolved layout direction.
`int`	`getPaddingTop()`	Obtains the top padding of the component.
`Point`	`getPivot()`	Obtains the pivot relative to the parent layout.
`float`	`getPivotX()`	Obtains the X-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
`float`	`getPivotY()`	Obtains the Y-axis coordinate of the pivot point relative to the parent layout.
`ResourceManager`	`getResourceManager()`	Obtains the resource manager associated with the context.
`int`	`getRight()`	Obtains the right edge position of a component relative to the parent layout.
`float`	`getRotation()`	Obtains the degrees that the component is rotated around the Z axis relative to the parent layout.
`Component.RotationEventListener`	`getRotationEventListener()`	Obtains a listener for monitoring rotation events of this component.
`float`	`getRotationSensitivity()`	Obtains the rotation sensitivity of a component.
`DimensFloat`	`getScale()`	Obtains the component's scale factor around the pivot relative to the parent layout.
`Component.ScaledListener`	`getScaledListener()`	Obtains a listener for monitoring scale events of this component.
`float`	`getScaleX()`	Obtains the component's scaling factor in the X direction around the pivot point relative to the parent layout.
`float`	`getScaleY()`	Obtains the component's scaling factor in the Y direction around the pivot point relative to the parent layout.
`Color`	`getScrollbarBackgroundColor()`	Obtains the background color of a scroll bar.
`Color`	`getScrollbarColor()`	Obtains the color of a scroll bar.
`int`	`getScrollbarFadingDelay()`	Obtains the delay before a scrollbar is fading.
`int`	`getScrollbarFadingDuration()`	Obtains the fading duration of a scrollbar.
`int`	`getScrollBarMode()`	Obtains the mode of the scrollbar that is being displayed.
`float`	`getScrollbarRadius()`	Obtains the radius of the scroll bar's rounded border.
`boolean`	`getScrollbarRoundRect()`	Obtains the rounded border of the scroll bar.
`float`	`getScrollbarStartAngle()`	Obtains the start angle of a rounded scroll bar.
`float`	`getScrollbarSweepAngle()`	Obtains the sweep angle of a rounded scroll bar.
`int`	`getScrollbarThickness()`	Obtains the thickness of a scroll bar.
`int`	`getScrollState()`	Obtaining the Component Scrolling Status.
`int`	`getScrollValue(int direction)`	Obtains the scroll offset of this component.
`boolean`	`getSelfVisibleRect(Rect rect)`	Allows to get local visible Rect (related to component's parent)
`Color`	`getShadowColor()`	Obtains the shadow's color of `Component`.
`Component.SpeechEventListener`	`getSpeechEventListener()`	Obtains the listener set by `setSpeechEventListener(ohos.agp.components.Component.SpeechEventListener)`.
`Object`	`getTag()`	Obtains the tag of a component.
`int`	`getTop()`	Obtains the top edge position of a component relative to the parent layout.
`Component.TouchEventListener`	`getTouchEventListener()`	Obtains a listener for monitoring touch events of this component.
`String`	`getTransitionSymbol()`	Gets transition symbol.
`DimensFloat`	`getTranslation()`	Obtains the component's horizontal translation relative to its left boundary and the vertical translation relative to its top boundary.
`float`	`getTranslationX()`	Obtains the horizontal translation of the component relative to its left position.
`float`	`getTranslationY()`	Obtains the vertical translation of the component relative to its top position.
`float`	`getTranslationZ()`	Obtains the depth location change of this component in the direction perpendicular to the screen.
`int`	`getUserNextFocus(int side)`	Obtains the ID of the next component to give focus to.
`int[]`	`getVerticalPadding()`	Obtains the vertical padding of this component.
`int[]`	`getVerticalPosition()`	Obtains the component's position relative to the parent layout.
`int`	`getVisibility()`	Obtains the visibility of a component.
`boolean`	`getVisibleRectOnScreen(Rect rect, int[] position)`	Obtains the visible rectangle area of a component in relative to the upper left corner of the screen.
`int`	`getWidth()`	Obtains the width of a component.
`boolean`	`getWindowVisibleRect(Rect visibleRect)`	Obtain the visible rect of the window where the component is located.
`boolean`	`hasFocus()`	Returns whether the component has focus.
`boolean`	`hasFocusedEffect()`	Checks whether a focus effect is displayed for this component when it gains focus.
`boolean`	`hasOverlaps()`	Checks whether this component has overlapping content.
`void`	`hideFocusBorder()`	已过时。 This change is effective since API version 8. This method is redundant and temporary and is therefore deprecated.
`void`	`informConfigurationChanged(Configuration config)`	Dispatches a configuration change event.
`void`	`invalidate()`	Invalidates a component.
`boolean`	`isBoundaryFadeEffectEnable()`	已过时。 This change is effective since API version 6. Replaced by `isFadeEffected(FadeEffectEnum)`
`boolean`	`isBoundToWindow()`	Checks whether the component has been bound to a window.
`boolean`	`isClickable()`	Returns whether the component responds to click events or not.
`boolean`	`isClipToContourEnabled()`	Checks whether the `Contour` object of a component can be used for content clipping.
`boolean`	`isComponentDisplayed()`	Checks whether the component can be displayed.
`boolean`	`isEnabled()`	Obtains the enabled state of the component.
`boolean`	`isFadeEffected(Component.FadeEffectEnum fadeEffectEnum)`	Checks whether the fade-out effect is enabled for the scroll bar or boundary indicator.
`boolean`	`isFocusable()`	Returns whether the component can currently receive focus.
`boolean`	`isFocused()`	Returns whether the component has been focused.
`boolean`	`isIdentityMatrix()`	Checks whether the conversion matrix of the current component is an identity matrix.
`boolean`	`isLongClickOn()`	Returns whether the component is long clickable.
`boolean`	`isPressed()`	Returns whether the component is currently in pressed state.
`boolean`	`isRtl()`	Checks whether the component is laid out from right to left.
`boolean`	`isSaveStateEnabled()`	Checks whether this component and its child components can save their states.
`boolean`	`isScrollbarFadingOn()`	已过时。 This change is effective since API version 6. Replaced by `isFadeEffected(FadeEffectEnum)`
`boolean`	`isScrollBarOn(int direction)`	Checks whether the scroll bar is enabled for this component.
`boolean`	`isScrollbarOverlapEnabled()`	Checks whether the scroll bar overlaps with the content.
`boolean`	`isSelected()`	Obtains the selection state of the component.
`boolean`	`isSoundEnable()`	Checks whether the sound is played when this component is being clicked.
`boolean`	`isTouchFocusable()`	Returns whether the component can receive focus in touch mode.
`boolean`	`isVibrationEffectEnabled()`	Checks whether vibration effect is enabled.
`void`	`notifyAccessibility(int eventType)`	Triggers an accessibility event specified by this component.
`protected void`	`onAttributeConfigChanged(Configuration config)`	Called when a configuration is changed.
`boolean`	`onDrag(Component component, DragEvent event)`	Called when a drag event is dispatched to the component.
`protected void`	`onRestoreState(Sequenceable state)`	Called when the states of this component and its child components are to be restored.
`protected void`	`onRtlChanged(Component.LayoutDirection layoutDirection)`	Called when any RTL property has been changed.
`protected Sequenceable`	`onSaveState()`	Called when the states of this component and its child components are to be saved.
`boolean`	`performScale()`	Performs a scale event in a component.
`void`	`playSound(int soundId)`	Plays a sound for this component.
`void`	`postLayout()`	Requests rearranging the layout of the component.
`void`	`refreshContour()`	Refresh the current `Contour` object of a component and triggers `ContourRefreshedListener#onContourRefreshed(Component)` for setting a custom `Contour` object.
`void`	`release()`	Releases resources.
`void`	`removeBindStateChangedListener(Component.BindStateChangedListener listener)`	Removes a listener for bind state changes.
`void`	`removeScrolledListener(Component.ScrolledListener listener)`	Deletes a listener that listens for scrolling events.
`boolean`	`requestFocus()`	Requests focus for the current component or one of its child components.
`void`	`requestForceForwardTouchEvent(boolean forceForward)`	Called when a component want this parent and its ancestors to keep forwarding following touch events.
`void`	`restoreComponentTreeState(PlainArray<Sequenceable> stateContainer)`	Restores the states of this component and its child components from a given container.
`void`	`saveComponentTreeState(PlainArray<Sequenceable> stateContainer)`	Saves the states of this component and its child components into a given container.
`void`	`scrollBy(int x, int y)`	Sets the offset by which the component is scrolled.
`void`	`scrollTo(int x, int y)`	Sets the target position you want the component to scroll to.
`void`	`setAccessibility(int flag)`	Sets the accessibility state.
`void`	`setAccessibilityDescription(String description)`	Sets the description of the accessibility mode for this component.
`void`	`setAlpha(float alpha)`	Sets the alpha value of the component.
`void`	`setAltitude(float altitude)`	Sets the basic depth location of this component in the direction perpendicular to the screen.
`void`	`setBackground(Element element)`	Sets a specified element as the background of the component.
`void`	`setBindStateChangedListener(Component.BindStateChangedListener listener)`	Adds a listener for bind state changes.
`void`	`setBottom(int bottom)`	Sets the bottom edge position of a component relative to the parent container.
`void`	`setBoundaryFadeEffectEnable(boolean enable)`	已过时。 This change is effective since API version 6. Replaced by `enableFadeEffect(FadeEffectEnum)` or `disableFadeEffect(FadeEffectEnum)`
`void`	`setCanAcceptScrollListener(Component.CanAcceptScrollListener listener)`
`void`	`setCenterZoomFactor(float scaleX, float scaleY)`	Sets the zoom factor for scaling the center component item.
`void`	`setCentralScrollMode(boolean centralMode)`	Sets whether to enable the central scroll mode to always display a component item at the center of a component.
`void`	`setClickable(boolean clickable)`	Enables or disables click events for the component.
`void`	`setClickedListener(Component.ClickedListener listener)`	Registers a listener for click events in the component.
`void`	`setClipEnabled(boolean enabled)`	Sets whether to allow automatic clipping of the component in case it exceeds its parent layout.
`void`	`setClipToContourEnabled(boolean enable)`	Sets whether the `Contour` object of a component can be used for content clipping.
`void`	`setComponentDescription(CharSequence componentDescription)`	Sets a description of the content in a component.
`void`	`setComponentMinSize(int minWidth, int minHeight)`	Sets the minimum possible width and height for this component.
`void`	`setComponentPosition(int left, int top, int right, int bottom)`	Sets the component's position relative to the parent container.
`void`	`setComponentPosition(Rect rect)`	Sets the component's position relative to the parent container based on `rect`.
`void`	`setComponentSize(int width, int height)`	Sets the component size.
`void`	`setComponentStateChangedListener(Component.ComponentStateChangedListener listener)`	Sets the listener for state change events of a component.
`void`	`setContentEnable(boolean enable)`	Sets whether to draw content for a component.
`void`	`setContentPosition(float x, float y)`	Sets positions for drawing and event listening.
`void`	`setContentPositionX(float x)`	Sets the x-coordinate for drawing and event listening.
`void`	`setContentPositionY(float y)`	Sets the y-coordinate for drawing and event listening.
`void`	`setContour(Contour contour)`	Sets a custom `Contour` object for the component.
`void`	`setContourRefreshedListener(Component.ContourRefreshedListener listener)`	Registers a listener for updates on the `Contour` object of a component.
`void`	`setDoubleClickedListener(Component.DoubleClickedListener listener)`	Registers a listener for monitoring double-click events of this component.
`void`	`setDragAcceptAngle(float degree)`	Sets the deflection angle for a horizontal or vertical drag recognizer.
`void`	`setDraggedListener(int dragMode, Component.DraggedListener listener)`	Registers a listener for drag events of a component.
`void`	`setEditEventListener(Component.EditEventListener listener)`	Registers a listener to observe editing events that are triggered by keyboard shortcuts and distributed to this component.
`void`	`setEnabled(boolean enabled)`	Sets the enabled state of the component.
`protected void`	`setEstimatedSize(int estimatedWidth, int estimatedHeight)`	This should be called from `EstimateSizeListener#onEstimateSize(int, int)` to set the measured width and height.
`protected void`	`setEstimateSizeListener(Component.EstimateSizeListener listener)`	Adds a listener on component's size estimating process.
`void`	`setFadeEffectBoundaryWidth(int width)`	Sets the boundary width for the component's fade-effect area.
`void`	`setFadeEffectColor(Color color)`	Sets the color displayed when producing the fade effect.
`void`	`setFocusable(int focusable)`	Sets whether the component can receive focus.
`void`	`setFocusBorderEnable(boolean enabled)`	Sets whether to enable the focus border when this component is in focus.
`void`	`setFocusBorderPadding(int padding)`	Sets the padding between the focus border and this component.
`void`	`setFocusBorderRadius(float radius)`	Sets the radius for the focus border.
`void`	`setFocusBorderRadius(float[] radii)`	Sets the radii for corners of the focus border.
`void`	`setFocusBorderWidth(int width)`	Sets the width for the focus border.
`void`	`setFocusChangedListener(Component.FocusChangedListener listener)`	Registers a listener for focus change events in the component.
`void`	`setFocusedEffect(boolean enabled)`	Sets whether this component has a focus effect when it gains focus.
`void`	`setForeground(Element element)`	Sets a specified element as the foreground of the component.
`void`	`setForegroundGravity(int foregroundGravity)`	已过时。 This change is effective since API version 6. This method is redundant and is therefore deprecated.
`void`	`setForwardHoverListener(Component.ForwardHoverListener listener)`	Registers a listener to decide forward mouse hover events to children components.
`void`	`setForwardTouchListener(Component.ForwardTouchListener listener)`	Registers a listener to decide forward touch events to children components.
`void`	`setGesturePriority(Component.GestureType gestureType, int priority)`	Sets the priority of gestures.
`void`	`setHeight(int height)`	Sets the height of a component.
`void`	`setHorizontalPadding(int left, int right)`	Sets the horizontal padding for this component.
`void`	`setHorizontalPosition(int left, int right)`	Sets the component's horizontal position relative to the parent container.
`void`	`setHoverEventListener(Component.HoverEventListener listener)`	Registers a listener for hover events in the component.
`void`	`setId(int id)`	Sets the unique ID of the component.
`void`	`setKeyEventListener(Component.KeyEventListener listener)`	Registers a listener for key events in the component.
`void`	`setLayoutConfig(ComponentContainer.LayoutConfig config)`	Sets the layout parameters of a component in its parent layout.
`void`	`setLayoutDirection(Component.LayoutDirection layoutDirection)`	Sets the layout direction for this component.
`void`	`setLayoutRefreshedListener(Component.LayoutRefreshedListener listener)`	Registers a listener for component's relayout.
`void`	`setLeft(int left)`	Sets the left edge position of a component relative to the parent container.
`void`	`setLongClickable(boolean longClickable)`	Sets whether the component is long clickable.
`void`	`setLongClickedListener(Component.LongClickedListener listener)`	Registers a listener for long-click events in the component (the component is clicked and held down).
`void`	`setMarginBottom(int bottom)`	Sets the bottom margin for this component.
`void`	`setMarginLeft(int left)`	Sets the left margin for this component.
`void`	`setMarginRight(int right)`	Sets the right margin for this component.
`void`	`setMarginsLeftAndRight(int left, int right)`	Sets horizontal margins for this component.
`void`	`setMarginsTopAndBottom(int top, int bottom)`	Sets vertical margins for this component.
`void`	`setMarginTop(int top)`	Sets the top margin for this component.
`void`	`setMinHeight(int minHeight)`	Sets the minimum height of a component.
`void`	`setMinWidth(int minWidth)`	Sets the minimum possible width of the component.
`void`	`setMode(int mode)`	Sets the showing mode of this component.
`void`	`setMouseEventListener(Component.MouseEventListener listener)`	Registers a listener for mouse events in the component.
`void`	`setMousePointerStyleListener(Component.MousePointerStyleListener listener)`	Registers a listener for mouse pointer style changes.
`void`	`setName(String name)`	Sets the name of the component.
`void`	`setOnDragListener(Component.OnDragListener listener)`	Registers a listener for drag events in the component.
`void`	`setPadding(int left, int top, int right, int bottom)`	Sets the padding of the component.
`void`	`setPaddingBottom(int bottom)`	Sets the bottom padding for this component.
`void`	`setPaddingLeft(int left)`	Sets the left padding for this component.
`void`	`setPaddingRelative(int start, int top, int end, int bottom)`	Sets the relative padding of the component.
`void`	`setPaddingRight(int right)`	Sets the right padding for this component.
`void`	`setPaddingTop(int top)`	Sets the top padding for this component.
`void`	`setPivot(float x, float y)`	Sets the pivot (point), around which this component is rotated and scaled.
`void`	`setPivot(Point point)`	Sets the pivot (point), around which this component is rotated and scaled based on `point`.
`void`	`setPivotX(float pivotX)`	Sets the X-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
`void`	`setPivotY(float pivotY)`	Sets the Y-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
`void`	`setPosition(int coordX, int coordY)`	Sets the position of the upper-left corner of a component, relative to the parent layout.
`void`	`setPositionX(int coordX)`	Sets the x-coordinate for the component's upper-left corner relative to the parent layout.
`void`	`setPositionY(int coordY)`	Sets the y-coordinate for the component's upper-left corner relative to the parent layout.
`void`	`setPressState(boolean pressState)`	Sets the pressed state of the component.
`void`	`setRight(int right)`	Sets the right edge position of a component relative to the parent container.
`void`	`setRotation(float degree)`	Sets the degrees that the component is rotated around the Z axis.
`void`	`setRotationEventListener(Component.RotationEventListener listener)`	Registers a listener for rotation events in the component.
`void`	`setRotationSensitivity(float value)`	Sets the rotation sensitivity of a component.
`void`	`setScale(float x, float y)`	Sets the component's scale factor around the pivot.
`void`	`setScaledListener(Component.ScaledListener listener)`	Registers a listener for scale events of a component.
`void`	`setScaleX(float scaleX)`	Sets the component's scaling factor in the X direction around the pivot point.
`void`	`setScaleY(float scaleY)`	Sets the component's scaling factor in the Y direction around the pivot point.
`void`	`setScrollbarBackgroundColor(Color color)`	Sets the background color of a scroll bar.
`void`	`setScrollbarColor(Color color)`	Sets the color of a scroll bar.
`void`	`setScrollbarFadingDelay(int delay)`	Sets the delay before a scrollbar is fading.
`void`	`setScrollbarFadingDuration(int duration)`	Sets the fading duration of a scrollbar.
`void`	`setScrollbarFadingEnabled(boolean enabled)`	已过时。 This change is effective since API version 6. Replaced by `enableFadeEffect(FadeEffectEnum)` or `disableFadeEffect(FadeEffectEnum)`
`void`	`setScrollBarMode(int scrollBarMode)`	Sets the mode of the scrollbar that is being displayed.
`void`	`setScrollbarOverlapEnabled(boolean enabled)`	Sets whether the scroll bar overlaps with the content.
`void`	`setScrollbarRadius(float radius)`	Sets the radius for the scroll bar's rounded border.
`void`	`setScrollbarRoundRect(boolean isRoundRect)`	Sets the shape of the scroll bar.
`void`	`setScrollbarStartAngle(float start)`	Sets the start angle for a rounded scroll bar.
`void`	`setScrollbarSweepAngle(float sweep)`	Sets the sweep angle for a rounded scroll bar.
`void`	`setScrollbarThickness(int thickness)`	Sets the thickness of a scroll bar.
`void`	`setScrolledListener(Component.ScrolledListener listener)`	Registers a listener for scroll events in the component.
`void`	`setSelected(boolean selected)`	Sets the selection state of the component.
`void`	`setShadowColor(Color color)`	Sets the shadow's color of `Component`.
`void`	`setShadowStyle(Component.ShadowSize size, Component.ShadowMode mode, Component.ShadowDevice device)`	Sets a specified element as the shadow style of the component.
`void`	`setSoundEnable(boolean enable)`	Enables or disables the sound for this component when it is being clicked.
`void`	`setSpeechEventListener(Component.SpeechEventListener listener)`	Sets a listener for voice events in this component.
`void`	`setTag(Object tag)`	Sets the tag associated with a component.
`void`	`setTop(int top)`	Sets the top edge position of a component relative to the parent container.
`void`	`setTouchEventListener(Component.TouchEventListener listener)`	Registers a listener for touch events in the component.
`void`	`setTouchFocusable(boolean focusable)`	Sets whether the component can receive focus while in touch mode.
`void`	`setTransitionSymbol(String symbol)`	Sets transition symbol.
`void`	`setTranslation(float x, float y)`	Sets the component's horizontal translation relative to its left boundary and the vertical translation relative to its top boundary.
`void`	`setTranslationX(float translationX)`	Sets the horizontal position of the component relative to its left position.
`void`	`setTranslationY(float translationY)`	Sets the vertical position of the component relative to its top position.
`void`	`setTranslationZ(float translationZ)`	Sets the depth location change of this component in the direction perpendicular to the screen.
`void`	`setUnconsumedKeyEventListener(Component.UnconsumedKeyEventListener listener)`	Registers a listener for unconsumed key events in the component.
`void`	`setUserNextFocus(int side, int id)`	Sets the next component to give focus to.
`void`	`setVerticalPadding(int top, int bottom)`	Sets the vertical padding for this component.
`void`	`setVerticalPosition(int top, int bottom)`	Sets the component's vertical position relative to the parent container.
`void`	`setVibrationEffectEnabled(boolean enabled)`	Sets whether the vibration effect is enabled.
`void`	`setVisibility(int visibility)`	Sets the visibility of a component.
`void`	`setWidth(int width)`	Sets the width of a component.
`void`	`showFocusBorder()`	已过时。 This change is effective since API version 8. This method is redundant and temporary and is therefore deprecated.
`boolean`	`simulateClick()`	Performs a click event in a component.
`boolean`	`simulateDrag()`	Performs a drag event of a component.
`boolean`	`startDragAndDrop(MimeData data, Component.DragFeedbackProvider shadowProvider)`	Starts dragging a component.
`void`	`subscribeVoiceEvents(Component.VoiceEvent voiceEvent)`	Subscribes to a specified voice event of this component.
`void`	`unsubscribeVoiceEvents()`	Unsubscribes from all voice events subscribed to by the current component at a time.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - ACCESSIBILITY_ADAPTABLE
```
public static final int ACCESSIBILITY_ADAPTABLE
```
    Indicates that this component can be accessed.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - ACCESSIBILITY_DISABLE
```
public static final int ACCESSIBILITY_DISABLE
```
    Indicates that this component cannot be accessed.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - ACCESSIBILITY_ENABLE
```
public static final int ACCESSIBILITY_ENABLE
```
    Indicates that this component is enabled.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - AXIS_X
```
public static final int AXIS_X
```
    Indicates the x-axis.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - AXIS_Y
```
public static final int AXIS_Y
```
    Indicates the y-axis.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - CONTOUR_BACKGROUND
```
public static final Component.ContourRefreshedListener CONTOUR_BACKGROUND
```
    Default ContourRefreshedListener for Component. If background element has been set into current component, obtain the contour from element and set into component. Otherwise, set a transparent contour of the same size as component.
    
    从以下版本开始:
    
    7
  - CONTOUR_BORDER
```
public static final Component.ContourRefreshedListener CONTOUR_BORDER
```
    Providers a contour that match rectangle border of component.
    
    从以下版本开始:
    
    7
  - CONTOUR_PADDING_BORDER
```
public static final Component.ContourRefreshedListener CONTOUR_PADDING_BORDER
```
    Providers a contour that match rectangle padding border of component.
    
    从以下版本开始:
    
    7
  - DEFAULT_SCALE
```
public static final float DEFAULT_SCALE
```
    Indicates the default zoom factor for scaling a component.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_DOWN
```
public static final int DRAG_DOWN
```
    Indicates the scroll bar is dragged downwards.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_HORIZONTAL
```
public static final int DRAG_HORIZONTAL
```
    Indicates that the scroll bar is dragged horizontally.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_HORIZONTAL_VERTICAL
```
public static final int DRAG_HORIZONTAL_VERTICAL
```
    Indicates that the scroll bar is dragged horizontally and vertically.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_LEFT
```
public static final int DRAG_LEFT
```
    Indicates that the scroll bar is dragged leftwards.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_RIGHT
```
public static final int DRAG_RIGHT
```
    Indicates that the scroll bar is dragged rightwards.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_UP
```
public static final int DRAG_UP
```
    Indicates that the scroll bar is dragged upwards.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - DRAG_VERTICAL
```
public static final int DRAG_VERTICAL
```
    Indicates that the scroll bar is dragged vertically.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED
```
public static final int EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED
```
    Represents an event indicating that the accessibility focus is obtained.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED_CLEAR
```
public static final int EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED_CLEAR
```
    Represents an event indicating that the accessibility focus is cleared.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_CLICKED
```
public static final int EVENT_TYPE_COMPONENT_CLICKED
```
    Represents an event indicating that the component is clicked.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_FOCUSED
```
public static final int EVENT_TYPE_COMPONENT_FOCUSED
```
    Represents an event indicating that the component gets the focus.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_LONG_CLICKED
```
public static final int EVENT_TYPE_COMPONENT_LONG_CLICKED
```
    Represents an event indicating that the component is long pressed.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_SCROLLED
```
public static final int EVENT_TYPE_COMPONENT_SCROLLED
```
    Represents an event indicating that the component is scrolled.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_SELECTED
```
public static final int EVENT_TYPE_COMPONENT_SELECTED
```
    Represents an event indicating that the component is selected.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_COMPONENT_TEXT_UPDATE
```
public static final int EVENT_TYPE_COMPONENT_TEXT_UPDATE
```
    Represents an event indicating that the text in the Text component is changed.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_NOTICE
```
public static final int EVENT_TYPE_NOTICE
```
    Represents an event indicating that the application sends a notice.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_NOTIFICATION_STATE_UPDATE
```
public static final int EVENT_TYPE_NOTIFICATION_STATE_UPDATE
```
    Represents an event indicating that a notification is displayed.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_TOAST_SHOW
```
public static final int EVENT_TYPE_TOAST_SHOW
```
    Represents an event indicating that a toast is displayed.
    
    另请参阅:
    
    常量字段值
  - EVENT_TYPE_WINDOW_STATE_UPDATE
```
public static final int EVENT_TYPE_WINDOW_STATE_UPDATE
```
    Represents an event indicating that the window state is updated.
    
    另请参阅:
    
    常量字段值
  - FOCUS_ADAPTABLE
```
public static final int FOCUS_ADAPTABLE
```
    The component determines focusability by itself. This is the default state. This constant is used as a parameter of setFocusable(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_DISABLE
```
public static final int FOCUS_DISABLE
```
    The component does not need keystrokes. This constant is used as a parameter of setFocusable(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_ENABLE
```
public static final int FOCUS_ENABLE
```
    The component needs keystrokes. This constant is used as a parameter of setFocusable(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_NEXT
```
public static final int FOCUS_NEXT
```
    Moves focus to the next clickable item. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_PREVIOUS
```
public static final int FOCUS_PREVIOUS
```
    Moves focus to the previous clickable item. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_SIDE_BOTTOM
```
public static final int FOCUS_SIDE_BOTTOM
```
    Moves focus down. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_SIDE_LEFT
```
public static final int FOCUS_SIDE_LEFT
```
    Moves focus to the left. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_SIDE_RIGHT
```
public static final int FOCUS_SIDE_RIGHT
```
    Moves focus to the right. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - FOCUS_SIDE_TOP
```
public static final int FOCUS_SIDE_TOP
```
    Moves focus up. This constant is used as a parameter of findNextFocusableComponent(int).
    
    另请参阅:
    
    常量字段值
  - HIDE
```
public static final int HIDE
```
    The component is invisible and does not occupy any space for layout purposes. This constant is used as a parameter of setVisibility(int).
    
    另请参阅:
    
    常量字段值
  - HORIZONTAL
```
public static final int HORIZONTAL
```
    Indicates the horizontal orientation mode.
    
    另请参阅:
    
    常量字段值
  - ID_DEFAULT
```
public static final int ID_DEFAULT
```
    Default ID of a component. The value -1 indicates that the component ID is not set.
    
    另请参阅:
    
    常量字段值
  - INHERITED_MODE
```
public static final int INHERITED_MODE
```
    Indicates that the component uses its parent component's showing mode. This constant is used as an input parameter of setMode(int).
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - INVISIBLE
```
public static final int INVISIBLE
```
    The component is invisible but still occupies space for layout purposes. This constant is used as a parameter of setVisibility(int).
    
    另请参阅:
    
    常量字段值
  - OVAL_MODE
```
public static final int OVAL_MODE
```
    Indicates that the component content is displayed in an ellipse. This constant is used as an input parameter of setMode(int).
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - OVAL_SCROLL_BAR_MODE
```
public static final int OVAL_SCROLL_BAR_MODE
```
    Indicates that the scrollbar is displayed as an ellipse. This constant is used as the input parameter of setScrollBarMode(int).
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - POSITION_X_INDEX
```
protected static final int POSITION_X_INDEX
```
    The X-axis coordinate in the position array.
    
    另请参阅:
    
    常量字段值
  - POSITION_Y_INDEX
```
protected static final int POSITION_Y_INDEX
```
    The Y-axis coordinate in the position array.
    
    另请参阅:
    
    常量字段值
  - RECT_MODE
```
public static final int RECT_MODE
```
    Indicates that the component content is displayed in a rectangle. This constant is used as an input parameter of setMode(int).
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - RECT_SCROLL_BAR_MODE
```
public static final int RECT_SCROLL_BAR_MODE
```
    Indicates that the scrollbar is displayed as a rectangle. This constant is used as the input parameter of setScrollBarMode(int).
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - SCROLL_AUTO_STAGE
```
public static final int SCROLL_AUTO_STAGE
```
    Indicates that the component scrolls inertially in response to a dedicated operation (for example, fling or rebounding).
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    常量字段值
  - SCROLL_IDLE_STAGE
```
public static final int SCROLL_IDLE_STAGE
```
    Indicates that scrolling has come to an end and the component is in the idle state.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    常量字段值
  - SCROLL_NORMAL_STAGE
```
public static final int SCROLL_NORMAL_STAGE
```
    Indicates that the component scrolls naturally in response to an external operation (for example, user touch input).
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    常量字段值
  - UNSPECIFIED_SCROLL_BAR_MODE
```
public static final int UNSPECIFIED_SCROLL_BAR_MODE
```
    Indicates that the mode of the scrollbar follows that of the showing component. This constant is used as the input parameter of setScrollBarMode(int).
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - VERTICAL
```
public static final int VERTICAL
```
    Indicates the vertical orientation mode.
    
    另请参阅:
    
    常量字段值
  - VISIBLE
```
public static final int VISIBLE
```
    The component is visible. This constant is used as a parameter of setVisibility(int).
    
    另请参阅:
    
    常量字段值
  - mBackgroundElement
```
protected Element mBackgroundElement
```
    Indicates the element object drawn in a component's background.
  - mCanvasForTaskOverContent
```
protected Canvas mCanvasForTaskOverContent
```
    The canvas used for custom drawing task between content and foreground.
  - mCanvasForTaskUnderContent
```
protected Canvas mCanvasForTaskUnderContent
```
    The canvas used for custom drawing task between background and content.
  - mComponentParent
```
protected ComponentParent mComponentParent
```
    Indicates the parent layout for a component.
  - mContext
```
protected Context mContext
```
    Indicates the context.
  - mDrawTaskOverContent
```
protected Component.DrawTask mDrawTaskOverContent
```
    Customizes a drawing task between the content and the foreground.
  - mDrawTaskUnderContent
```
protected Component.DrawTask mDrawTaskUnderContent
```
    Customizes a drawing task between the content and the background.
  - mEstimateSizeListener
```
protected Component.EstimateSizeListener mEstimateSizeListener
```
    Customizes component's width and height during component's estimating size process
  - mForegroundElement
```
protected Element mForegroundElement
```
    Indicates the element object drawn in a component's foreground.
  - mForwardHoverListener
```
protected Component.ForwardHoverListener mForwardHoverListener
```
    Indicates the callback invoked when a mouse hover event is forwarded.
  - mHoverEventListener
```
protected Component.HoverEventListener mHoverEventListener
```
    Indicates the callback invoked when receiving a mouse hover event.
  - mKeyEventListener
```
protected Component.KeyEventListener mKeyEventListener
```
    Indicates the callback invoked when focused component receiving a key event.
  - mMouseEventListener
```
protected Component.MouseEventListener mMouseEventListener
```
    Indicates the callback invoked when receiving a mouse event.
  - mPosition
```
protected float[] mPosition
```
    Creates the float value for a position.
  - mRotationEventListener
```
protected Component.RotationEventListener mRotationEventListener
```
    Indicates the callback invoked when receiving a rotation event.
  - mShadowElement
```
protected ShadowElement mShadowElement
```
    Indicates the element object drawn in a component's shadowstyle.
  - mUnconsumedKeyEventListener
```
protected Component.UnconsumedKeyEventListener mUnconsumedKeyEventListener
```
    Indicates the callback invoked when receiving an unconsumed key event.
- 构造器详细资料
  - Component
```
public Component(Context context)
```
    Default constructor used to create a Component instance by using the default attribute set and style.
    
    参数:
    
    context - Indicates the application context.
  - Component
```
public Component(Context context,
                 AttrSet attrSet)
```
    A constructor used to create a Component instance by using specified attribute set and default style after the XML file is parsed.
    
    参数:
    
    context - Indicates the application context.
    
    attrSet - Indicates the attribute set to be used.
  - Component
```
public Component(Context context,
                 AttrSet attrSet,
                 String styleName)
```
    A constructor used to create a Component instance by using specified attribute set and specified style after the XML file is parsed.
    
    参数:
    
    context - Indicates the application context.
    
    attrSet - Indicates the attribute set to be used.
    
    styleName - Indicates the style name to use.
  - Component
```
public Component(Context context,
                 AttrSet attrSet,
                 int resId)
```
    A constructor used to create a Component instance based on the context, attribute set, and default theme after the XML file is parsed.
    
    参数:
    
    context - Indicates the application context.
    
    attrSet - Indicates the attribute set.
    
    resId - Indicates the resource ID of the default theme.
    
    从以下版本开始:
    
    3
- 方法详细资料
  - findComponentHolderById
```
public ComponentHolder findComponentHolderById(int resId)
```
    Obtains the ComponentHolder instance using the resource ID.
    
    参数:
    
    resId - Indicates the resource ID to use.
    
    返回:
    
    Returns the ComponentHolder instance.
    
    从以下版本开始:
    
    4
  - draw
```
public void draw(Canvas canvas)
```
    Draws this component and its child components on a canvas.
    This method must be called in the main thread.
    
    参数:
    
    canvas - Indicates the canvas used for drawing.
    
    从以下版本开始:
    
    7
  - startDragAndDrop
```
public final boolean startDragAndDrop(MimeData data,
                                      Component.DragFeedbackProvider shadowProvider)
```
    Starts dragging a component.
    There is one way to turn on dragging. LongClickedListener need to be set for this component. After LongClickedListener listener is invoked before TouchEvent#PRIMARY_POINT_UP, component is ready for DragAndDrop. startDragAndDrop need to be invoked in LongClickedListener#onLongClicked callback with created DragFeedbackProvider and shadowComponent.
    
    参数:
    
    data - Indicates the data carried by the dragged component.
    
    shadowProvider - Indicates the provider of the dragged component's style.
    
    返回:
    
    Returns true if the component is ready for dragging; returns false otherwise.
  - getComponentParent
```
public final ComponentParent getComponentParent()
```
    Obtains the parent layout of a component.
    Each component must be within a parent layout, or itself must be a root component (or layout).
    
    返回:
    
    Returns the parent layout of the component; returns an empty string if the component itself is a root component (or layout).
  - setEstimateSizeListener
```
protected void setEstimateSizeListener(Component.EstimateSizeListener listener)
```
    Adds a listener on component's size estimating process.
    
    参数:
    
    listener - Specifies the size estimating listener for a component.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    Component.EstimateSizeListener
  - addDrawTask
```
public void addDrawTask(Component.DrawTask task)
```
    Adds a drawing task between the foreground and the component content.
    This method invokes addDrawTask(ohos.agp.components.Component.DrawTask,int), where the value of layer is DrawTask#BETWEEN_CONTENT_AND_FOREGROUND.
    
    参数:
    
    task - Indicates the drawing task to add.
    
    另请参阅:
    
    addDrawTask(DrawTask, int), invalidate()
  - addDrawTask
```
public void addDrawTask(Component.DrawTask task,
                        int layer)
```
    Adds a draw task.
    The drawing of each component includes its foreground, content, and background.You can use this method to add a drawing task between the foreground and the content or between the content and the background.
    
    参数:
    
    task - Indicates the drawing task to add.
    
    layer - Indicates the position of the drawing task. This value can only be DrawTask#BETWEEN_BACKGROUND_AND_CONTENT or DrawTask#BETWEEN_CONTENT_AND_FOREGROUND.
  - invalidate
```
public void invalidate()
```
    Invalidates a component.
    This method is mainly used to update a component's drawing tasks. Modifying component attributes will automatically trigger a component update.
  - setContentEnable
```
public void setContentEnable(boolean enable)
```
    Sets whether to draw content for a component.
    
    参数:
    
    enable - Indicates whether to draw the content for a component. true means to draw the component content; false means not to.
  - getContentEnable
```
public boolean getContentEnable()
```
    Obtains whether the content of the component will be drawn.
    
    返回:
    
    Returns true if the component will be drawn; returns false otherwise. The default value is true.
  - setFocusedEffect
```
public void setFocusedEffect(boolean enabled)
```
    Sets whether this component has a focus effect when it gains focus.
    By default, the focus effect of a component is a focus border. A component may have its own custom focus effect. For example, the custom focus effect of a button can be a focus border with rounded corners. You can also set the background or foreground to achieve the focus effect.
    
    参数:
    
    enabled - Specifies whether to enable the focus effect. The value true (default value) means to enable the focus effect, and false means the opposite.
    
    从以下版本开始:
    
    7
  - hasFocusedEffect
```
public boolean hasFocusedEffect()
```
    Checks whether a focus effect is displayed for this component when it gains focus.
    
    返回:
    
    Returns true (default value) if a focus effect is displayed; returns false otherwise.
    
    从以下版本开始:
    
    7
  - createAnimatorProperty
```
public AnimatorProperty createAnimatorProperty()
```
    Creates a property animator object associated with a component.
    When you use this method to create an animator object, the current component is automatically set as the target of the animator. The animator only changes the display of the component and the event capturing area. It does not change the layout of the component.
    
    返回:
    
    Returns a new property animator object associated with the current component.
    
    从以下版本开始:
    
    3
  - getContext
```
public Context getContext()
```
    Obtains the context object held by this component.
    
    返回:
    
    Returns the application context.
  - setPosition
```
public void setPosition(int coordX,
                        int coordY)
```
    Sets the position of the upper-left corner of a component, relative to the parent layout.
    
    参数:
    
    coordX - Indicates the x-axis position, in pixels.
    
    coordY - Indicates the y-axis position, in pixels.
    
    从以下版本开始:
    
    5
  - setPositionX
```
public void setPositionX(int coordX)
```
    Sets the x-coordinate for the component's upper-left corner relative to the parent layout.
    
    参数:
    
    coordX - Indicates the x-coordinate to set, in pixels.
    
    从以下版本开始:
    
    5
  - setPositionY
```
public void setPositionY(int coordY)
```
    Sets the y-coordinate for the component's upper-left corner relative to the parent layout.
    
    参数:
    
    coordY - Indicates the y-coordinate to set, in pixels.
    
    从以下版本开始:
    
    5
  - setContentPosition
```
public void setContentPosition(float x,
                               float y)
```
    Sets positions for drawing and event listening.
    The position of each component relative to the parent layout is indicated using the position of its upper-left corner. This method is used to change the position of a component in the parent layout, as well as the area where the component listens for screen events. This method does not change the layout. It should be used mainly for animation.
    
    参数:
    
    x - Indicates the new X-axis coordinate, in unit of pixels.
    
    y - Indicates the new Y-axis coordinate, in unit of pixels.
  - setContentPositionX
```
public void setContentPositionX(float x)
```
    Sets the x-coordinate for drawing and event listening.
    You can use this method to:
    - Change the position of a component in the parent layout. Each component takes its upper left corner as its position relative to the parent layout.
    - Listen for screen events.
    Calling this method does not change the layout. It should be used mainly for animations.
    参数:
    
    x - Indicates the x-coordinate to set, in pixels.
    
    从以下版本开始:
    
    4
  - setContentPositionY
```
public void setContentPositionY(float y)
```
    Sets the y-coordinate for drawing and event listening.
    You can use this method to:
    - Change the position of a component in the parent layout. Each component takes its upper left corner as its position relative to the parent layout.
    - Listen for screen events.
    Calling this method does not change the layout. It should be used mainly for animations.
    参数:
    
    y - Indicates the y-coordinate to set, in pixels.
    
    从以下版本开始:
    
    4
  - getContentPositionX
```
public float getContentPositionX()
```
    Obtains the X-axis coordinate.
    The position of each component relative to the parent layout is indicated using the position of its upper-left corner. This value is not the same as the absolute position of the component's left edge.
    
    返回:
    
    Returns the X-axis coordinate, in unit of pixels.
  - getContentPositionY
```
public float getContentPositionY()
```
    Obtains the Y-axis coordinate.
    The position of each component relative to the parent layout is indicated using the position of its upper-left corner. This value is not the same as the absolute position of the component's top edge.
    
    返回:
    
    Returns the Y-axis coordinate, in unit of pixels.
  - getContentPosition
```
public float[] getContentPosition()
```
    Obtains the positions when drawing.
    The position of each component relative to the parent layout is indicated using the position of its upper-left corner. These values are not the same as the absolute position of the component's upper-left corner.
    
    返回:
    
    Returns the position array, the contents of this array are X-axis and Y-axis coordinate, in unit of pixels.
  - getLocationOnScreen
```
public int[] getLocationOnScreen()
```
    Obtains the absolute position of a component on the screen.
    
    返回:
    
    Returns an array indicating the absolute position of the component, in unit of pixels.
  - setWidth
```
public void setWidth(int width)
```
    Sets the width of a component.
    This method modifies the width in the LayoutConfig object associated with the component.The actual effect varies depending on the parent layout type.
    
    参数:
    
    width - Indicates the width of the component, in unit of pixels. A value less than 0 means that the component will not be displayed.
  - setComponentSize
```
public void setComponentSize(int width,
                             int height)
```
    Sets the component size.
    
    参数:
    
    width - Indicates the component width to set, in pixels. If the value is less than 0, the component is not displayed.
    
    height - Indicates the component height, in pixels. If the value is less than 0, the component is not displayed.
    
    从以下版本开始:
    
    4
  - getComponentSize
```
public DimensFloat getComponentSize()
```
    Obtains the component size.
    
    返回:
    
    Returns a DimensFloat representing the component size, in pixels.
    
    从以下版本开始:
    
    4
  - getWidth
```
public int getWidth()
```
    Obtains the width of a component.
    This method obtains the actual width of the component if it is already bound to a window. Formula: Width = Location of the right edge - Location of the left edge. If the component is not bound to a window, this method returns its width recorded in LayoutConfig.
    
    返回:
    
    Returns the width of the component, in unit of pixels.
  - setHeight
```
public void setHeight(int height)
```
    Sets the height of a component.
    This method modifies the height in the LayoutConfig object associated with the component. The actual effect varies depending on the parent layout type.
    
    参数:
    
    height - Indicates the height of the component, in unit of pixels. A value less than 0 means that the component will not be displayed.
  - setRotationSensitivity
```
public void setRotationSensitivity(float value)
```
    Sets the rotation sensitivity of a component. Each component that supports the rotating crown provides a suitable sensitivity range between ROTATION_SENSITIVITY_LOW and ROTATION_SENSITIVITY_HIGH. The rotation sensitivity of ROTATION_SENSITIVITY_DEFAULT is set by default for each component. You can also adjust the rotation sensitivity appropriately.
    
    参数:
    
    value - Indicates the rotation sensitivity of the component.
    
    从以下版本开始:
    
    3
  - getRotationSensitivity
```
public float getRotationSensitivity()
```
    Obtains the rotation sensitivity of a component.
    
    返回:
    
    Returns the rotation sensitivity of the component.
    
    从以下版本开始:
    
    3
  - getHeight
```
public int getHeight()
```
    Obtains the height of a component.
    This method obtains the actual height of the component if it is already bound to a window. Formula: Height = Location of the top edge - Location of the bottom edge. If the component is not bound to a window, this method returns its height recorded in LayoutConfig.
    
    返回:
    
    Returns the height of the component, in unit of pixels.
  - getLeft
```
public int getLeft()
```
    Obtains the left edge position of a component relative to the parent layout.
    This value is the left edge position of the actual layout. It is different from the left edge of the component's displayed area.
    
    返回:
    
    Returns the left edge's relative position, in pixels.
  - setLeft
```
public void setLeft(int left)
```
    Sets the left edge position of a component relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.
    
    参数:
    
    left - Indicates the left edge's relative position, in pixels.
  - getRight
```
public int getRight()
```
    Obtains the right edge position of a component relative to the parent layout.
    This value is the right edge position of the actual layout. It is different from the right edge of the component's displayed area.
    
    返回:
    
    Returns the right edge's relative position, in pixels.
  - setRight
```
public void setRight(int right)
```
    Sets the right edge position of a component relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.
    
    参数:
    
    right - Indicates the right edge's relative position, in pixels.
  - getTop
```
public int getTop()
```
    Obtains the top edge position of a component relative to the parent layout.
    This value is the top edge position of the actual layout. It is different from the top edge of the component's displayed area.
    
    返回:
    
    Returns the top edge's relative position, in pixels.
  - setTop
```
public void setTop(int top)
```
    Sets the top edge position of a component relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.*
    
    参数:
    
    top - Indicates the top edge's relative position, in pixels.
  - getBottom
```
public int getBottom()
```
    Obtains the bottom edge position of a component relative to the parent layout.
    This value is the bottom edge position of the actual layout. It is different from the bottom edge of the component's displayed area.
    
    返回:
    
    Returns the bottom edge's relative position, in pixels.
  - setBottom
```
public void setBottom(int bottom)
```
    Sets the bottom edge position of a component relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.
    
    参数:
    
    bottom - Indicates the bottom edge's relative position, in pixels.
  - setComponentPosition
```
public void setComponentPosition(int left,
                                 int top,
                                 int right,
                                 int bottom)
```
    Sets the component's position relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property values can be changed at any time by the parent container.
    
    参数:
    
    left - Indicates the position of the component's left edge, in pixels.
    
    top - Indicates the position of the component's top edge, in pixels.
    
    right - Indicates the position of the component's right edge, in pixels.
    
    bottom - Indicates the position of the component's bottom edge, in pixels.
    
    抛出:
    
    IllegalArgumentException - Throws this exception if the width (right - left) or height (bottom - top) value is less than 0.
    
    从以下版本开始:
    
    4
  - setComponentPosition
```
public void setComponentPosition(Rect rect)
```
    Sets the component's position relative to the parent container based on rect.
    This method can be used only by the layout system. We can't use it generally because the property values can be changed at any time by the parent container.
    
    参数:
    
    rect - Indicates the position to set.
    
    抛出:
    
    IllegalArgumentException - Throws this exception if the width (right - left) or height (bottom - top) value is less than 0 or rect argument value is null.
    
    从以下版本开始:
    
    4
  - setHorizontalPosition
```
public void setHorizontalPosition(int left,
                                  int right)
```
    Sets the component's horizontal position relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.
    
    参数:
    
    left - Indicates the position of the component's left edge, in pixels.
    
    right - Indicates the position of the component's right edge, in pixels.
    
    抛出:
    
    IllegalArgumentException - Throws this exception if the width (right - left) value is less than 0.
    
    从以下版本开始:
    
    4
  - setVerticalPosition
```
public void setVerticalPosition(int top,
                                int bottom)
```
    Sets the component's vertical position relative to the parent container.
    This method can be used only by the layout system. We can't use it generally because the property value can be changed at any time by the parent container.
    
    参数:
    
    top - Indicates the position of the component's top edge, in pixels.
    
    bottom - Indicates the position of the component's bottom edge, in pixels.
    
    抛出:
    
    IllegalArgumentException - Throws this exception if the height (bottom - top) value is less than 0.
    
    从以下版本开始:
    
    4
  - getHorizontalPosition
```
public int[] getHorizontalPosition()
```
    Obtains the component's horizontal position relative to the parent layout.
    
    返回:
    
    Returns an array of the left and right edges in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getVerticalPosition
```
public int[] getVerticalPosition()
```
    Obtains the component's position relative to the parent layout.
    
    返回:
    
    Returns an array of the top and bottom edges in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getComponentPosition
```
public Rect getComponentPosition()
```
    Obtains the component's position relative to the parent layout.
    
    返回:
    
    Returns a Rect representing the position of the component, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginLeft
```
public void setMarginLeft(int left)
```
    Sets the left margin for this component.
    
    参数:
    
    left - Indicates the left margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginTop
```
public void setMarginTop(int top)
```
    Sets the top margin for this component.
    
    参数:
    
    top - Indicates the top margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginRight
```
public void setMarginRight(int right)
```
    Sets the right margin for this component.
    
    参数:
    
    right - Indicates the right margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginBottom
```
public void setMarginBottom(int bottom)
```
    Sets the bottom margin for this component.
    
    参数:
    
    bottom - Indicates the bottom margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginsLeftAndRight
```
public void setMarginsLeftAndRight(int left,
                                   int right)
```
    Sets horizontal margins for this component.
    
    参数:
    
    left - Indicates the left margin to set, in pixels.
    
    right - Indicates the right margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - setMarginsTopAndBottom
```
public void setMarginsTopAndBottom(int top,
                                   int bottom)
```
    Sets vertical margins for this component.
    
    参数:
    
    top - Indicates the top margin to set, in pixels.
    
    bottom - Indicates the bottom margin to set, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginLeft
```
public int getMarginLeft()
```
    Obtains the left margin of this component.
    
    返回:
    
    Returns the left margin, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginTop
```
public int getMarginTop()
```
    Obtains the top margin of this component.
    
    返回:
    
    Returns the top margin, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginRight
```
public int getMarginRight()
```
    Obtains the right margin of this component.
    
    返回:
    
    Returns the right margin, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginBottom
```
public int getMarginBottom()
```
    Obtains the bottom margin of this component.
    
    返回:
    
    Returns the bottom margin, in pixels.
    
    从以下版本开始:
    
    4
  - getMargins
```
public int[] getMargins()
```
    Obtains the left, top, right, and bottom margins of this component.
    
    返回:
    
    Returns an array of the left, top, right, and bottom margins in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginsLeftAndRight
```
public int[] getMarginsLeftAndRight()
```
    Obtains horizontal margins of this component.
    
    返回:
    
    Returns an array of the left and right margins in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getMarginsTopAndBottom
```
public int[] getMarginsTopAndBottom()
```
    Obtains vertical margins of this component.
    
    返回:
    
    Returns an array of the top and bottom margins in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - setForegroundGravity
```
@Deprecated
public void setForegroundGravity(int foregroundGravity)
```
    已过时。 This change is effective since API version 6. This method is redundant and is therefore deprecated.
    
    Sets the foreground position.
    
    参数:
    
    foregroundGravity - Indicates the foreground position of the component.
    
    从以下版本开始:
    
    5
  - getForegroundGravity
```
@Deprecated
public int getForegroundGravity()
```
    已过时。 This change is effective since API version 6. This method is redundant and is therefore deprecated.
    
    Obtains the foreground position.
    
    返回:
    
    Returns the foreground position of the component.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    setForegroundGravity(int)
  - setLayoutConfig
```
public void setLayoutConfig(ComponentContainer.LayoutConfig config)
```
    Sets the layout parameters of a component in its parent layout.
    The child class of layout parameters passed in varies depending on the child class of the parent layout. After the component tree that contains the current component is added to a window, the system calculates the position, width, and height of the component in the parent layout based on the ComponentContainer.LayoutConfig parameters and type of the component. The following child classes of layout parameters are supported:
    参数:
    
    config - Indicates the layout parameters of the component. These parameters cannot be null.
  - getLayoutConfig
```
public ComponentContainer.LayoutConfig getLayoutConfig()
```
    Obtains the layout parameters associated with a component.
    All components should have layout parameters. They supply parameters to the parent layout of a component specify how the component should be arranged. There are many child classes of ComponentContainer.LayoutConfig, which correspond to different child classes of ComponentContainer that are responsible for arranging their children. If the component is not bound to a parent ComponentContainer or an exception occurs when calling the component is bound to a parent ComponentContainer, this method must not return null.
    
    返回:
    
    Returns the layout parameters associated with the component; returns null if the component is not bound to a parent ComponentContainer or an exception occurs when calling
  - setMinHeight
```
public void setMinHeight(int minHeight)
```
    Sets the minimum height of a component.
    There is no guarantee that a component will be able to reach this minimum height, for example, if the parent layout does not support this minimum height.
    
    参数:
    
    minHeight - Indicates the minimum possible height of the component, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    getMinHeight()
  - getMinHeight
```
public int getMinHeight()
```
    Obtains the minimum possible height of the component.
    The component may not be able to achieve this minimum height.
    
    返回:
    
    Returns the minimum height of the component, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setMinHeight(int)
  - setMinWidth
```
public void setMinWidth(int minWidth)
```
    Sets the minimum possible width of the component.
    There is no guarantee that the component will be able to reach this minimum width, for example, if the parent layout does not support this minimum width.
    
    参数:
    
    minWidth - Indicates the minimum possible width of the component, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    getMinWidth()
  - getMinWidth
```
public int getMinWidth()
```
    Obtains the minimum possible width of the component.
    The component may not be able to achieve this minimum width.
    
    返回:
    
    Returns the minimum possible width of the component, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setMinWidth(int)
  - setComponentMinSize
```
public void setComponentMinSize(int minWidth,
                                int minHeight)
```
    Sets the minimum possible width and height for this component.
    
    参数:
    
    minWidth - Indicates the minimum possible width to set, in pixels.
    
    minHeight - Indicates the minimum possible height to set, in pixels.
    
    从以下版本开始:
    
    4
  - getComponentMinSize
```
public DimensFloat getComponentMinSize()
```
    Obtains the possible minimum size of this component.
    
    返回:
    
    Returns a DimensFloat object representing the possible minimum size, in pixels.
    
    从以下版本开始:
    
    4
  - getScrollValue
```
public int getScrollValue(int direction)
```
    Obtains the scroll offset of this component.
    
    参数:
    
    direction - Indicates the direction, x-axis or y-axis. The value AXIS_X indicates that the scroll offset on the x-axis is to be obtained, and AXIS_Y indicates that the scroll offset on the y-axis is to be obtained.
    
    返回:
    
    Returns the scroll offset, in pixels.
    
    从以下版本开始:
    
    4
  - setVisibility
```
public void setVisibility(int visibility)
```
    Sets the visibility of a component.
    When the parameter value is VISIBLE, the component occupies space and needs to be rendered. When the parameter value is INVISIBLE, the component occupies space but does not need to be rendered. When the parameter value is HIDE, the component occupies no space and does not need to be rendered.
    
    参数:
    
    visibility - The value is one of the following: VISIBLE, INVISIBLE, or HIDE.
  - getVisibility
```
public int getVisibility()
```
    Obtains the visibility of a component.
    A component can have three visibility states:
    - VISIBLE: The component occupies space and needs to be rendered.
    - INVISIBLE: The component occupies space but does not need to be rendered.
    - HIDE: The component occupies no space and does not need to be rendered.
    返回:
    
    Returns the visibility state of the component. The value can be one of the following: VISIBLE, INVISIBLE, or HIDE.
    
    另请参阅:
    
    setVisibility(int visibility)
  - release
```
public void release()
```
    Releases resources.
  - announceAccessibility
```
public void announceAccessibility(String text)
```
    Sets text for an accessibility event of the TYPE_ANNOUNCEMENT type.
    
    参数:
    
    text - Indicates the text to set.
    
    从以下版本开始:
    
    4
  - setAccessibilityDescription
```
public void setAccessibilityDescription(String description)
```
    Sets the description of the accessibility mode for this component.
    
    参数:
    
    description - Indicates the accessibility description to set.
    
    从以下版本开始:
    
    3
  - getAccessibilityDescription
```
public String getAccessibilityDescription()
```
    Obtains the accessibility description of this component.
    
    返回:
    
    Returns the accessibility description of this component.
    
    从以下版本开始:
    
    3
  - notifyAccessibility
```
public void notifyAccessibility(int eventType)
```
    Triggers an accessibility event specified by this component.
    参数:
    eventType - Indicates the accessibility event to trigger. The value can be any of the following:
    0x00000001: A component such as a button is clicked.
    
    0x00000002: A component is long pressed.
    
    0x00000004: A component is selected.
    
    0x00000008: A component is in focus.
    
    0x00000010: A text is changed.
    
    0x00000020: The content of a window is changed.
    
    0x00001000: A component stops scrolling.
    
    0x00004000: The content of a component is read.
    0x00008000: The accessibility focus is obtained.
    
    0x00010000: The accessibility focus is cleared.
    
    0x01000000: A component starts scrolling.
    从以下版本开始:
    
    4
  - setAccessibility
```
public void setAccessibility(int flag)
```
    Sets the accessibility state.
    
    参数:
    
    flag - Indicates accessibility state to set, which can be ACCESSIBILITY_DISABLE, ACCESSIBILITY_AUTO, or ACCESSIBILITY_ENABLE.
    
    从以下版本开始:
    
    4
  - getAccessibility
```
public int getAccessibility()
```
    Obtains the accessibility state.
    
    返回:
    
    Returns the accessibility state.
    
    从以下版本开始:
    
    4
  - isBoundToWindow
```
public boolean isBoundToWindow()
```
    Checks whether the component has been bound to a window.
    Each window creates a component tree. Each component that needs to be displayed in the window must be bound to this tree.Adding a component to the component tree is equivalent to binding a component to a window.
    
    返回:
    
    Returns true if the component has been bound to a window; returns false otherwise.
    
    从以下版本开始:
    
    4
  - isComponentDisplayed
```
public boolean isComponentDisplayed()
```
    Checks whether the component can be displayed.
    This is different from the visibility of the component. For example, for a component whose visibility state is VISIBLE, if its size is 0 or if its parent layout cannot be displayed, the component still cannot be displayed on the screen. On the contrary, even for a component that is completely transparent, this method returns true if the component can be displayed on the screen simply by changing its transparency color.
    
    返回:
    
    Returns true if the component can be displayed; returns false otherwise.
    
    从以下版本开始:
    
    4
  - setComponentStateChangedListener
```
public void setComponentStateChangedListener(Component.ComponentStateChangedListener listener)
```
    Sets the listener for state change events of a component.
    
    参数:
    
    listener - Indicates the listener for state change events of the component.
    
    从以下版本开始:
    
    3
  - getComponentStateChangedListener
```
public Component.ComponentStateChangedListener getComponentStateChangedListener()
```
    Obtains a listener for monitoring state changes of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setClickedListener
```
public void setClickedListener(Component.ClickedListener listener)
```
    Registers a listener for click events in the component.
    When the position of a click is within the component's display area, a click event is triggered, and all registered observers are notified.
    
    参数:
    
    listener - Indicates the listener for click events.
  - getClickedListener
```
public Component.ClickedListener getClickedListener()
```
    Obtains a listener for monitoring click events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setEditEventListener
```
public void setEditEventListener(Component.EditEventListener listener)
```
    Registers a listener to observe editing events that are triggered by keyboard shortcuts and distributed to this component.
    
    参数:
    
    listener - Indicates the listener to register.
    
    从以下版本开始:
    
    7
  - getEditEventListener
```
public Component.EditEventListener getEditEventListener()
```
    Obtains the listener that observes the editing events that are triggered by keyboard shortcuts and distributed to this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    7
  - setDoubleClickedListener
```
public void setDoubleClickedListener(Component.DoubleClickedListener listener)
```
    Registers a listener for monitoring double-click events of this component.
    When a double-click event occurs in the display area of this component, this method is called and all registered observers are notified.
    
    参数:
    
    listener - Indicates the listener to register.
    
    从以下版本开始:
    
    5
  - setScaledListener
```
public void setScaledListener(Component.ScaledListener listener)
```
    Registers a listener for scale events of a component.
    All registered observers will be notified of scale events dispatched to this component.
    
    参数:
    
    listener - Indicates the scale listener.
  - getScaledListener
```
public Component.ScaledListener getScaledListener()
```
    Obtains a listener for monitoring scale events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setGesturePriority
```
public void setGesturePriority(Component.GestureType gestureType,
                               int priority)
```
    Sets the priority of gestures.
    
    参数:
    
    gestureType - Gesture type GestureType.
    
    priority - Priority of the gesture. Larger value indicates a higher priority, and the default priority is 0.
    
    从以下版本开始:
    
    5
  - getGesturePriority
```
public int getGesturePriority(Component.GestureType gestureType)
```
    Gets the priority of gestures.
    
    参数:
    
    gestureType - Gesture type GestureType.
    
    返回:
    
    Returns the priority of the gesture.
    
    从以下版本开始:
    
    5
  - setOnDragListener
```
public void setOnDragListener(Component.OnDragListener listener)
```
    Registers a listener for drag events in the component.
    When the position of a dragging action is within the component's display area, a drag event is triggered, and all registered observers are notified.
    
    参数:
    
    listener - Indicates the listener for drag events.
    
    从以下版本开始:
    
    7
  - setDraggedListener
```
public void setDraggedListener(int dragMode,
                               Component.DraggedListener listener)
```
    Registers a listener for drag events of a component.
    All registered observers will be notified of drag events dispatched to this component. If listener is null, drag events will be canceled. One component can own several identical drag recognizers, and the user-defined drag recognizer takes precedence over the internal drag recognizer.
    
    参数:
    
    dragMode - Indicates the current drag mode. The value can be one of the following: DRAG_HORIZONTAL_VERTICAL, DRAG_HORIZONTAL, DRAG_VERTICAL
    
    listener - Indicates the listener for drag events.
    
    从以下版本开始:
    
    3
  - getDraggedListener
```
public Component.DraggedListener getDraggedListener()
```
    Obtains a listener for monitoring drag events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setDragAcceptAngle
```
public void setDragAcceptAngle(float degree)
```
    Sets the deflection angle for a horizontal or vertical drag recognizer.
    The deflection angle refers to the included angle between the dragging direction and the principal direction, which is horizontal regarding a horizontal drag recognizer or vertical regarding a vertical drag recognizer. If the dragging displacement on the touchscreen projected onto the principal direction exceeds the preset threshold (8 vp) but is less than twice the threshold, the drag recognizer calculates the deflection angle and assumes that dragging starts only when the calculated angle is less than the one you set via this method. If the dragging displacement exceeds twice the threshold, the drag recognizer assumes that dragging starts, regardless of the deflection angle you set. This method takes effect only on a drag recognizer whose dragMode is set to DRAG_HORIZONTAL or DRAG_VERTICAL via setDraggedListener(int, ohos.agp.components.Component.DraggedListener). The default deflection angle is 26.57 degrees.
    
    参数:
    
    degree - Indicates the deflection angle to set. The value ranges from 15.0 to 75.0 degrees.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    getDragAcceptAngle(), setDraggedListener(int dragMode, DraggedListener listener)
  - getDragAcceptAngle
```
public float getDragAcceptAngle()
```
    Obtains the deflection angle set for a horizontal or vertical drag recognizer.
    
    返回:
    
    Returns the deflection angle, in degrees.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    setDragAcceptAngle(float degree)
  - onDrag
```
public boolean onDrag(Component component,
                      DragEvent event)
```
    Called when a drag event is dispatched to the component.
    
    参数:
    
    component - Indicates the component.
    
    event - Indicates the drag event.
    
    返回:
    
    Returns true if the drag event is processed correctly; returns false otherwise.
  - setFocusChangedListener
```
public void setFocusChangedListener(Component.FocusChangedListener listener)
```
    Registers a listener for focus change events in the component.
    All registered observers will be notified of focus change events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for focus change events.
  - setKeyEventListener
```
public void setKeyEventListener(Component.KeyEventListener listener)
```
    Registers a listener for key events in the component.
    All registered observers will be notified of key events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for key events.
  - setUnconsumedKeyEventListener
```
public void setUnconsumedKeyEventListener(Component.UnconsumedKeyEventListener listener)
```
    Registers a listener for unconsumed key events in the component.
    All registered observers will be notified of unconsumed key events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for key events.
    
    从以下版本开始:
    
    7
  - setMouseEventListener
```
public void setMouseEventListener(Component.MouseEventListener listener)
```
    Registers a listener for mouse events in the component.
    All registered observers will be notified of mouse events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for mouse events.
    
    从以下版本开始:
    
    7
  - getMouseEventListener
```
public Component.MouseEventListener getMouseEventListener()
```
    Obtains a listener for monitoring mouse events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    7
  - setForwardHoverListener
```
public void setForwardHoverListener(Component.ForwardHoverListener listener)
```
    Registers a listener to decide forward mouse hover events to children components.
    
    参数:
    
    listener - Indicates the listener to forward mouse hover events.
    
    从以下版本开始:
    
    7
  - getForwardHoverListener
```
public Component.ForwardHoverListener getForwardHoverListener()
```
    Obtains a listener for forward mouse hover events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    7
  - setHoverEventListener
```
public void setHoverEventListener(Component.HoverEventListener listener)
```
    Registers a listener for hover events in the component.
    All registered observers will be notified of hover events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for hover events.
    
    从以下版本开始:
    
    7
  - getHoverEventListener
```
public Component.HoverEventListener getHoverEventListener()
```
    Obtains a listener for monitoring hover events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    7
  - setMousePointerStyleListener
```
public void setMousePointerStyleListener(Component.MousePointerStyleListener listener)
```
    Registers a listener for mouse pointer style changes.
    
    参数:
    
    listener - Indicates the listener to register.
    
    从以下版本开始:
    
    7
  - getMousePointerStyleListener
```
public Component.MousePointerStyleListener getMousePointerStyleListener()
```
    Obtains a listener for mouse pointer style changes.
    
    返回:
    
    Returns a listener.
    
    从以下版本开始:
    
    7
  - getKeyEventListener
```
public Component.KeyEventListener getKeyEventListener()
```
    Obtains a listener for monitoring key events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setRotationEventListener
```
public void setRotationEventListener(Component.RotationEventListener listener)
```
    Registers a listener for rotation events in the component.
    All registered observers will be notified of rotation events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for rotation events.
  - getRotationEventListener
```
public Component.RotationEventListener getRotationEventListener()
```
    Obtains a listener for monitoring rotation events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setLongClickedListener
```
public void setLongClickedListener(Component.LongClickedListener listener)
```
    Registers a listener for long-click events in the component (the component is clicked and held down).
    All registered observers will be notified of long-click events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for long-click events.
  - setTouchEventListener
```
public void setTouchEventListener(Component.TouchEventListener listener)
```
    Registers a listener for touch events in the component.
    All registered observers will be notified of touch events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for touch events.
  - setForwardTouchListener
```
public void setForwardTouchListener(Component.ForwardTouchListener listener)
```
    Registers a listener to decide forward touch events to children components.
    
    参数:
    
    listener - Indicates the listener to forward touch events.
    
    从以下版本开始:
    
    7
  - getForwardTouchListener
```
public Component.ForwardTouchListener getForwardTouchListener()
```
    Obtains a listener for forward touch events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    7
  - getTouchEventListener
```
public Component.TouchEventListener getTouchEventListener()
```
    Obtains a listener for monitoring touch events of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - requestForceForwardTouchEvent
```
public void requestForceForwardTouchEvent(boolean forceForward)
```
    Called when a component want this parent and its ancestors to keep forwarding following touch events. The request will take effect until receiving next primary point up.
    
    参数:
    
    forceForward - True if the child want the parent to keep forwarding touch event, false otherwise
    
    从以下版本开始:
    
    7
  - setLayoutRefreshedListener
```
public void setLayoutRefreshedListener(Component.LayoutRefreshedListener listener)
```
    Registers a listener for component's relayout.
    
    参数:
    
    listener - Indicates the listener for component relayout.
    
    从以下版本开始:
    
    3
  - getLayoutRefreshedListener
```
public Component.LayoutRefreshedListener getLayoutRefreshedListener()
```
    Obtains a listener for monitoring layout refresh of this component.
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setContourRefreshedListener
```
public void setContourRefreshedListener(Component.ContourRefreshedListener listener)
```
    Registers a listener for updates on the Contour object of a component.
    
    参数:
    
    listener - Indicates the listener for contour updates.
    
    从以下版本开始:
    
    7
  - getContourRefreshedListener
```
public Component.ContourRefreshedListener getContourRefreshedListener()
```
    Obtains the listener for updates on the Contour object of a component.
    
    返回:
    
    Returns the listener for contour updates if obtained; returns null otherwise.
    
    从以下版本开始:
    
    7
  - setContour
```
public void setContour(Contour contour)
```
    Sets a custom Contour object for the component.
    
    参数:
    
    contour - Indicates the custom Contour object.
    
    从以下版本开始:
    
    7
  - getContour
```
public Contour getContour()
```
    Obtains the Contour object of the current component.
    
    返回:
    
    Returns the Contour object of the current component.
    
    从以下版本开始:
    
    7
  - setClipToContourEnabled
```
public void setClipToContourEnabled(boolean enable)
```
    Sets whether the Contour object of a component can be used for content clipping. Clipping is supported only when the Contour object takes the form of a right-angled rectangle, a rounded rectangle, or a circle. The part beyond the Contour object will be cropped.
    
    参数:
    
    enable - Indicates whether clipping is supported. Value true indicates that clipping is supported; value false indicates the opposite.
    
    从以下版本开始:
    
    7
  - isClipToContourEnabled
```
public boolean isClipToContourEnabled()
```
    Checks whether the Contour object of a component can be used for content clipping.
    
    返回:
    
    Returns true if the Contour object can be used for content clipping; returns false otherwise.
    
    从以下版本开始:
    
    7
  - refreshContour
```
public void refreshContour()
```
    Refresh the current Contour object of a component and triggers ContourRefreshedListener#onContourRefreshed(Component) for setting a custom Contour object. Use this method if you want to actively update the Contour object of a component.
    
    从以下版本开始:
    
    7
  - setScrolledListener
```
public void setScrolledListener(Component.ScrolledListener listener)
```
    Registers a listener for scroll events in the component.
    All registered observers will be notified of scroll events dispatched to the component.
    
    参数:
    
    listener - Indicates the listener for scroll events.
  - addScrolledListener
```
public void addScrolledListener(Component.ScrolledListener listener)
```
    Adds a listener to listen for scrolling events reported when the scrolling stage or position of the component has changed.
    A registered listener will receive a notification when the component reports a scrolling event.
    
    参数:
    
    listener - Indicates the listener for scrolling events.
    
    从以下版本开始:
    
    5
  - removeScrolledListener
```
public void removeScrolledListener(Component.ScrolledListener listener)
```
    Deletes a listener that listens for scrolling events.
    
    参数:
    
    listener - Indicates the listener for scrolling events.
    
    从以下版本开始:
    
    5
  - canScroll
```
public boolean canScroll(int orientation)
```
    Checks whether the component can be scrolled in the specified direction.
    
    参数:
    
    orientation - Indicates the dragging direction. The value can be DRAG_UP, DRAG_DOWN, DRAG_LEFT, or DRAG_RIGHT.
    
    返回:
    
    Returns true if the component can be scrolled in the specified direction; returns false otherwise.
    
    从以下版本开始:
    
    5
  - getScrollState
```
public int getScrollState()
```
    Obtaining the Component Scrolling Status.
    
    返回:
    
    Scrolling Status.
  - setCanAcceptScrollListener
```
public void setCanAcceptScrollListener(Component.CanAcceptScrollListener listener)
```
  - simulateClick
```
public boolean simulateClick()
```
    Performs a click event in a component.
    This method calls the OnClickListener created for the component. The observer registered by the setClickedListener(ohos.agp.components.Component.ClickedListener) method will be notified. After the callback is executed, the system passes a lifting event to the click event listener.
    
    返回:
    
    Returns true if the callback function is executed successfully.
    
    从以下版本开始:
    
    4
  - performScale
```
public boolean performScale()
```
    Performs a scale event in a component.
    This method invokes the callback for scale events of the control. Observers registered by the setScaledListener(ohos.agp.components.Component.ScaledListener) method will be notified. When the callback is executed, the system will transfer the scale event to the scale listener.
    
    返回:
    
    Returns true if the callback function is executed successfully.
  - simulateDrag
```
public boolean simulateDrag()
```
    Performs a drag event of a component.
    This method invokes the callback for drag events of the control. Observers registered by the setDraggedListener(int,ohos.agp.components.Component.DraggedListener) method will be notified. When the callback is executed, the system will transfer the drag event to the drag listener.
    
    返回:
    
    Returns true if the callback function is executed successfully.
    
    从以下版本开始:
    
    4
  - callOnClick
```
public boolean callOnClick()
```
    Calls the assigned OnClickListener.
    Unlike simulateClick(), this method only notifies observers registered using the setClickedListener(ohos.agp.components.Component.ClickedListener) method, but does not perform any actual operation on the component itself.
    
    返回:
    
    Returns true if the assigned OnClickListener is called successfully.
  - executeLongClick
```
public boolean executeLongClick()
```
    Performs a long-click event in a component.
    This method calls the OnLongClickListener created for the component. Observers registered by the setLongClickedListener(ohos.agp.components.Component.LongClickedListener) method will be notified. After the callback is executed, the system passes a lifting event to the long-click event listener.
    
    返回:
    
    Returns true if the callback function is executed successfully.
    
    从以下版本开始:
    
    4
  - executeDoubleClick
```
public boolean executeDoubleClick()
```
    Executes the double-click event occurring in this component.
    This method calls the OnDoubleClickListener created for this component. Observers registered by the setDoubleClickedListener(ohos.agp.components.Component.DoubleClickedListener) method will be notified. After the callback is invoked, the system passes an event indicating the end of a double-click event to the listener set by setDoubleClickedListener(ohos.agp.components.Component.DoubleClickedListener).
    
    返回:
    
    Returns true if the operation is successful; returns false otherwise.
    
    从以下版本开始:
    
    5
  - setClickable
```
public void setClickable(boolean clickable)
```
    Enables or disables click events for the component.
    If a component is clickable, its state will change to pressed upon every click. Child classes should set the component to clickable to visually react to user clicks. If a component is not clickable, it should not be able to receive focus. If it has already received focus, the focus should be cleared immediately.
    
    参数:
    
    clickable - true means to make the component clickable, and false means the opposite.
    
    另请参阅:
    
    isClickable()
  - isClickable
```
public boolean isClickable()
```
    Returns whether the component responds to click events or not.
    If a component is not clickable, it cannot receive focus.
    
    返回:
    
    Returns true if the component is clickable; returns false if it is not.
    
    另请参阅:
    
    setClickable(boolean)
  - setEnabled
```
public void setEnabled(boolean enabled)
```
    Sets the enabled state of the component.
    The interpretation of the enabled state varies depending on the child class. If a component is not enabled, it should not acquire focus.
    
    参数:
    
    enabled - true means the component is enabled, and false means the opposite.
  - setClipEnabled
```
public void setClipEnabled(boolean enabled)
```
    Sets whether to allow automatic clipping of the component in case it exceeds its parent layout.
    
    参数:
    
    enabled - true means to allow auto-clipping, and false means the opposite.
  - getClipEnabled
```
public boolean getClipEnabled()
```
    Checks whether automatic clipping of this component is enabled when it exceeds its parent layout.
    
    返回:
    
    Returns true if automatic clipping is enabled; returns false otherwise.
    
    从以下版本开始:
    
    4
  - isEnabled
```
public boolean isEnabled()
```
    Obtains the enabled state of the component. The default state is enabled.
    
    返回:
    
    Returns true if the component is enabled; returns false if it is not.
  - setFocusable
```
public void setFocusable(int focusable)
```
    Sets whether the component can receive focus.
    The value FOCUS_ENABLE means the component can receive focus. The value FOCUS_ADAPTABLE means to let the framework to determine whether the component can receive focus based on the component's interactivity. This is the default value. The value FOCUS_DISABLE ensures that the component is also not focusable in touch mode. Each component uses a state bit to indicate whether it is focusable. If a component is not clickable, this state bit cannot be changed to indicate focusable.
    
    参数:
    
    focusable - Indicates whether the component can gain focus. The value can be FOCUS_DISABLE, FOCUS_ENABLE, or FOCUS_ADAPTABLE.
  - showFocusBorder
```
@Deprecated
public void showFocusBorder()
```
    已过时。 This change is effective since API version 8. This method is redundant and temporary and is therefore deprecated.
    
    Show focus border.
    
    从以下版本开始:
    
    7
  - hideFocusBorder
```
@Deprecated
public void hideFocusBorder()
```
    已过时。 This change is effective since API version 8. This method is redundant and temporary and is therefore deprecated.
    
    Hide focus border.
    
    从以下版本开始:
    
    7
  - setTouchFocusable
```
public void setTouchFocusable(boolean focusable)
```
    Sets whether the component can receive focus while in touch mode.
    Setting this to true will also ensure that the component is focusable.
    
    参数:
    
    focusable - Indicates whether the component can receive focus.
    
    从以下版本开始:
    
    4
  - getFocusable
```
public int getFocusable()
```
    Obtains the focusable setting of the component.
    The return value is the same as the value set by the setFocusable(int) method.
    
    返回:
    
    Returns the focusable setting of the component. The value can be any of the following: FOCUS_DISABLE, FOCUS_ENABLE, or FOCUS_ADAPTABLE.
  - setId
```
public void setId(int id)
```
    Sets the unique ID of the component.
    The component ID is usually a non-negative value, and is set to -1 by default.
    
    参数:
    
    id - Indicates the component ID to set.
  - getId
```
public int getId()
```
    Obtains the unique ID of the component.
    The default value is -1.
    
    返回:
    
    Returns the component ID.
  - setName
```
public void setName(String name)
```
    Sets the name of the component.
    The component name is usually a string, and is set to empty by default.
    
    参数:
    
    name - Indicates the component name to set.
  - getName
```
public String getName()
```
    Obtains the name of the component.
    The default name is empty.
    
    返回:
    
    Returns the component name.
  - setLongClickable
```
public void setLongClickable(boolean longClickable)
```
    Sets whether the component is long clickable.
    A long-clickable component reacts to long click events, that is, the user holding down a button for a longer duration than a tap.
    
    参数:
    
    longClickable - Indicates whether the component is long clickable.
    
    另请参阅:
    
    isLongClickOn()
  - isLongClickOn
```
public boolean isLongClickOn()
```
    Returns whether the component is long clickable.
    A long-clickable component reacts to long click events, that is, the user holding down a button for a longer duration than a tap.
    
    返回:
    
    Returns true if the component is long clickable; returns false otherwise.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setLongClickable(boolean)
  - playSound
```
public void playSound(int soundId)
```
    Plays a sound for this component.
    
    参数:
    
    soundId - Indicates the type of the sound to play, which can be 0 for SOUND_CLICK, 1 for SOUND_UP, 2 for SOUND_DOWN, 3 for SOUND_LEFT, or 4 for SOUND_RIGHT.
    
    从以下版本开始:
    
    7
  - setSoundEnable
```
public void setSoundEnable(boolean enable)
```
    Enables or disables the sound for this component when it is being clicked.
    
    参数:
    
    enable - Specifies whether to enable the sound for the component. The value true means to enable the sound, and false means the opposite.
    
    从以下版本开始:
    
    7
  - isSoundEnable
```
public boolean isSoundEnable()
```
    Checks whether the sound is played when this component is being clicked.
    
    返回:
    
    Returns true if the sound is played; returns false otherwise.
    
    从以下版本开始:
    
    7
  - setPadding
```
public void setPadding(int left,
                       int top,
                       int right,
                       int bottom)
```
    Sets the padding of the component.
    A component reserves the spaces for the paddings on all four sizes before drawing itself.
    
    参数:
    
    left - Indicates the left padding in pixels.
    
    top - Indicates the top padding in pixels.
    
    right - Indicates the right padding in pixels.
    
    bottom - Indicates the bottom padding in pixels.
  - setPaddingRelative
```
public void setPaddingRelative(int start,
                               int top,
                               int end,
                               int bottom)
```
    Sets the relative padding of the component.
    At present, it is the same as setPadding(int,int,int,int).
    
    参数:
    
    start - Indicates the start padding in pixels.
    
    top - Indicates the top padding in pixels.
    
    end - Indicates the end padding in pixels.
    
    bottom - Indicates the bottom padding in pixels.
  - getPaddingBottom
```
public int getPaddingBottom()
```
    Obtains the bottom padding of the component.
    
    返回:
    
    Returns the bottom padding of the component.
  - getPaddingEnd
```
public int getPaddingEnd()
```
    Obtains the end padding of the component depending on its resolved layout direction.
    
    返回:
    
    Returns the end padding of the component in pixels.
  - getPaddingLeft
```
public int getPaddingLeft()
```
    Obtains the left padding of the component.
    
    返回:
    
    Returns the left padding of the component in pixels.
  - getPaddingRight
```
public int getPaddingRight()
```
    Obtains the right padding of the component.
    
    返回:
    
    Returns the right padding of the component in pixels.
  - getPaddingStart
```
public int getPaddingStart()
```
    Obtains the start padding of the component depending on its resolved layout direction.
    
    返回:
    
    Returns the start padding of the component in pixels.
  - getPaddingTop
```
public int getPaddingTop()
```
    Obtains the top padding of the component.
    
    返回:
    
    Returns the top padding of the component, in pixels.
  - setPaddingTop
```
public void setPaddingTop(int top)
```
    Sets the top padding for this component.
    
    参数:
    
    top - Indicates the top padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - setPaddingBottom
```
public void setPaddingBottom(int bottom)
```
    Sets the bottom padding for this component.
    
    参数:
    
    bottom - Indicates the bottom padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - setPaddingLeft
```
public void setPaddingLeft(int left)
```
    Sets the left padding for this component.
    
    参数:
    
    left - Indicates the left padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - setPaddingRight
```
public void setPaddingRight(int right)
```
    Sets the right padding for this component.
    
    参数:
    
    right - Indicates the right padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - setHorizontalPadding
```
public void setHorizontalPadding(int left,
                                 int right)
```
    Sets the horizontal padding for this component.
    
    参数:
    
    left - Indicates the left padding to set, in pixels.
    
    right - Indicates the right padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - setVerticalPadding
```
public void setVerticalPadding(int top,
                               int bottom)
```
    Sets the vertical padding for this component.
    
    参数:
    
    top - Indicates the top padding to set, in pixels.
    
    bottom - Indicates the bottom padding to set, in pixels.
    
    从以下版本开始:
    
    4
  - getPadding
```
public int[] getPadding()
```
    Obtains the padding of this component.
    
    返回:
    
    Returns an array of the left, top, right, and bottom padding in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getHorizontalPadding
```
public int[] getHorizontalPadding()
```
    Obtains the horizontal padding of this component.
    
    返回:
    
    Returns an array of the left and right padding in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - getVerticalPadding
```
public int[] getVerticalPadding()
```
    Obtains the vertical padding of this component.
    
    返回:
    
    Returns an array of the top and bottom padding in sequence, in pixels.
    
    从以下版本开始:
    
    4
  - setPressState
```
public void setPressState(boolean pressState)
```
    Sets the pressed state of the component.
    Calling this method may change the appearance of the component, if a different appearance has been set for such state.
    
    参数:
    
    pressState - Indicates the pressed state. true means to set the component's internal state to pressed.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    isClickable(), setClickable(boolean)
  - isPressed
```
public boolean isPressed()
```
    Returns whether the component is currently in pressed state.
    If the setPressState(boolean) function has not been invoked, only a clickable component can enter the pressed state.
    
    返回:
    
    Returns true if the component is in pressed state; returns false otherwise.
  - setSelected
```
public void setSelected(boolean selected)
```
    Sets the selection state of the component.
    A component can be selected or deselected. Note that being selected is not the same as in focus. components are typically selected in the context of an AdapterComponent like ListContainer; a selected component is highlighted.
    
    参数:
    
    selected - Indicates the selected state of the component. true indicates the component is selected.
  - isSelected
```
public boolean isSelected()
```
    Obtains the selection state of the component.
    
    返回:
    
    Returns true if the component is selected; returns false otherwise.
  - hasFocus
```
public boolean hasFocus()
```
    Returns whether the component has focus.
    
    返回:
    
    Returns true if the component or its parent component has focus; returns false otherwise.
  - isFocusable
```
public boolean isFocusable()
```
    Returns whether the component can currently receive focus.
    
    返回:
    
    Returns true if the component can receive focus; returns false otherwise.
  - isTouchFocusable
```
public boolean isTouchFocusable()
```
    Returns whether the component can receive focus in touch mode.
    
    返回:
    
    Returns true if the component can receive focus in touch mode; returns false otherwise.
    
    从以下版本开始:
    
    4
  - isFocused
```
public boolean isFocused()
```
    Returns whether the component has been focused.
    
    返回:
    
    Returns true if the component has focus; returns false otherwise.
  - requestFocus
```
public boolean requestFocus()
```
    Requests focus for the current component or one of its child components.
    A component will not be able to actually take focus in any of the following situations: the component is not focusable (isFocusable() returns false); or the component is not focusable in touch mode (isTouchFocusable() returns false); or the component is invisible, disabled, or has not acquired space for drawing.
    
    返回:
    
    Returns true if the component or one of its child components has taken focus; returns false otherwise.
  - clearFocus
```
public void clearFocus()
```
    Requests giving up focus.
  - postLayout
```
public void postLayout()
```
    Requests rearranging the layout of the component.
    
    从以下版本开始:
    
    4
  - arrange
```
public void arrange(int left,
                    int top,
                    int width,
                    int height)
```
    Positioning the component relatively to the parent layout.
    
    参数:
    
    left - Indicates the left edge's relative position, in pixels.
    
    top - Indicates the top edge's relative position, in pixels.
    
    width - Indicates the component width, in pixels.
    
    height - Indicates the component height, in pixels.
    
    从以下版本开始:
    
    3
  - estimateSize
```
public void estimateSize(int widthEstimatedConfig,
                         int heightEstimatedConfig)
```
    Sets components's width and height sizes and requirements
    
    参数:
    
    widthEstimatedConfig - Horizontal size requirements
    
    heightEstimatedConfig - Vertical size requirements
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    Component.EstimateSizeListener.onEstimateSize(int, int)
  - setEstimatedSize
```
protected final void setEstimatedSize(int estimatedWidth,
                                      int estimatedHeight)
```
    This should be called from EstimateSizeListener#onEstimateSize(int, int) to set the measured width and height.
    
    参数:
    
    estimatedWidth - The estimated width of this component.
    
    estimatedHeight - The estimated height of this component.
    
    从以下版本开始:
    
    3
  - getEstimatedWidth
```
public final int getEstimatedWidth()
```
    Returns the estimated width for component.
    
    返回:
    
    The estimated width of this component.
    
    从以下版本开始:
    
    3
  - getEstimatedHeight
```
public final int getEstimatedHeight()
```
    Returns the estimated height for component.
    
    返回:
    
    The estimated height of this component.
    
    从以下版本开始:
    
    3
  - setBindStateChangedListener
```
public void setBindStateChangedListener(Component.BindStateChangedListener listener)
```
    Adds a listener for bind state changes.
    To display a component on the screen, you must add it to the component tree of a window. Each component has a listener list that has implemented the BindStateChangedListener interface. When a component is bound to or unbound from a window, the BindStateChangedListener#onComponentBoundToWindow(Component) and BindStateChangedListener#onComponentUnboundFromWindow(Component) methods of this interface are called back, respectively. This method adds listeners specified by the input parameter to the listener list.
    
    参数:
    
    listener - Indicates the listener to add.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    removeBindStateChangedListener(BindStateChangedListener)
  - removeBindStateChangedListener
```
public void removeBindStateChangedListener(Component.BindStateChangedListener listener)
```
    Removes a listener for bind state changes.
    To display a component on the screen, you must add it to the component tree of a window. Each component has a listener list that has implemented the BindStateChangedListener interface. When a component is bound to or unbound from a window, the BindStateChangedListener#onComponentBoundToWindow(Component) (Component)} and BindStateChangedListener#onComponentUnboundFromWindow(Component) methods of this interface are called back, respectively. This method removes listeners specified by the input parameter from the listener list.
    
    参数:
    
    listener - Indicates the listener to remove.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setBindStateChangedListener(BindStateChangedListener)
  - bindCornerMark
```
public CornerMark bindCornerMark()
```
    Sets the corner mark object to be displayed on top of the component.
    
    返回:
    
    Returns the corner mark object if bound; returns null otherwise.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    enableCornerMark(boolean)
  - getCornerMark
```
public CornerMark getCornerMark()
```
    Obtains the corner mark object of the component.
    
    返回:
    
    Returns the corner mark object displayed on top of the current component.
    
    从以下版本开始:
    
    5
  - enableCornerMark
```
public void enableCornerMark(boolean enable)
```
    Enables or disables the corner mark for the current component.
    
    参数:
    
    enable - Specifies whether to display the component's corner mark. The value true indicates that the corner mark is displayed, and false indicates the opposite case.
    
    从以下版本开始:
    
    5
  - setBackground
```
public void setBackground(Element element)
```
    Sets a specified element as the background of the component.
    
    参数:
    
    element - Indicates the element to use as the background.
  - setForeground
```
public void setForeground(Element element)
```
    Sets a specified element as the foreground of the component.
    
    参数:
    
    element - Indicates the element to use as the foreground.
  - setShadowStyle
```
public void setShadowStyle(Component.ShadowSize size,
                           Component.ShadowMode mode,
                           Component.ShadowDevice device)
```
    Sets a specified element as the shadow style of the component.
    
    参数:
    
    size - The size we will draw shadow in a round square witch is shadow.
    
    mode - The mode we will draw shadow in a round square witch is shadow.
    
    device - device The device we will draw shadow in a round square rect witch is shadow.
    
    从以下版本开始:
    
    7
  - getBackgroundElement
```
public Element getBackgroundElement()
```
    Obtains element in the component's background.
    
    返回:
    
    Returns element in the component's background.
  - getForegroundElement
```
public Element getForegroundElement()
```
    Obtains element in the component's foreground.
    
    返回:
    
    Returns element in the component's foreground.
  - setFocusBorderEnable
```
public void setFocusBorderEnable(boolean enabled)
```
    Sets whether to enable the focus border when this component is in focus.
    
    参数:
    
    enabled - Specifies whether the focus border is enabled. The value true indicates that the focus border is enabled, and the value false (default value) indicates the opposite case.
    
    从以下版本开始:
    
    4
  - setFocusBorderWidth
```
public void setFocusBorderWidth(int width)
```
    Sets the width for the focus border.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    参数:
    
    width - Indicates the width to set, in pixels. Any value smaller than 0 is invalid.
    
    从以下版本开始:
    
    4
  - setFocusBorderPadding
```
public void setFocusBorderPadding(int padding)
```
    Sets the padding between the focus border and this component.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    参数:
    
    padding - Indicates the padding to set, in pixels. Any value smaller than 0 is invalid.
    
    从以下版本开始:
    
    4
  - setFocusBorderRadius
```
public void setFocusBorderRadius(float radius)
```
    Sets the radius for the focus border.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    参数:
    
    radius - Indicates the radius to set. This value must be greater than 0, and in this case the focus border is a rounded rectangle or a circle.
    
    从以下版本开始:
    
    4
  - setFocusBorderRadius
```
public void setFocusBorderRadius(float[] radii)
```
    Sets the radii for corners of the focus border.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    参数:
    
    radii - Indicates an array containing radii of the focus border's four corners. The setting is valid only if the array length is 8. Each pair of values represents a corner's x-axis radius and the y-axis radius, respectively.
    
    从以下版本开始:
    
    4
  - getFocusBorderEnable
```
public boolean getFocusBorderEnable()
```
    Checks whether the focus border is displayed when this component is in focus.
    
    返回:
    
    Returns true if the focus border is displayed; returns false (default value) otherwise.
    
    从以下版本开始:
    
    4
  - getFocusBorderWidth
```
public int getFocusBorderWidth()
```
    Obtains the width of the focus border.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    返回:
    
    Returns the width of the focus border, in pixels.
    
    从以下版本开始:
    
    4
  - getFocusBorderPadding
```
public int getFocusBorderPadding()
```
    Obtains the padding between the focus border and this component.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    返回:
    
    Returns the padding, in pixels.
    
    从以下版本开始:
    
    4
  - getFocusBorderRadius
```
public float[] getFocusBorderRadius()
```
    Obtains the radii of the focus border's four corners.
    The focus border is displayed only when the component is in focus and the focus border is enabled.
    
    返回:
    
    Returns a float array containing radii of the focus border's four corners.
    
    从以下版本开始:
    
    4
  - setRotation
```
public void setRotation(float degree)
```
    Sets the degrees that the component is rotated around the Z axis.
    This method sets the degrees (value range: 0 to 360) that the component rotates around the Z axis relative to its parent layout.
    
    参数:
    
    degree - Indicates the degrees that the component is rotated around the Z axis.
    
    另请参阅:
    
    getRotation()
  - setPivotX
```
public void setPivotX(float pivotX)
```
    Sets the X-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
    
    参数:
    
    pivotX - Indicates the X-axis coordinate of the pivot point.
    
    另请参阅:
    
    setPivotY(float), getPivotX(), getPivotY()
  - setPivotY
```
public void setPivotY(float pivotY)
```
    Sets the Y-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
    
    参数:
    
    pivotY - Indicates the Y-axis coordinate of the pivot point.
    
    另请参阅:
    
    setPivotX(float), getPivotX(), getPivotY()
  - setPivot
```
public void setPivot(float x,
                     float y)
```
    Sets the pivot (point), around which this component is rotated and scaled.
    
    参数:
    
    x - Indicates the x-coordinate of the pivot to set.
    
    y - Indicates the y-coordinate of the pivot to set.
    
    从以下版本开始:
    
    4
  - setPivot
```
public void setPivot(Point point)
```
    Sets the pivot (point), around which this component is rotated and scaled based on point.
    
    参数:
    
    point - Indicates the point to set.
    
    从以下版本开始:
    
    4
  - setScaleX
```
public void setScaleX(float scaleX)
```
    Sets the component's scaling factor in the X direction around the pivot point.
    
    参数:
    
    scaleX - Indicates the scaling factor in the X direction.
    
    另请参阅:
    
    setScaleY(float), getScaleY(), getScaleX()
  - setScaleY
```
public void setScaleY(float scaleY)
```
    Sets the component's scaling factor in the Y direction around the pivot point.
    
    参数:
    
    scaleY - Indicates the scaling factor in the Y direction.
    
    另请参阅:
    
    setScaleX(float), getScaleY(), getScaleX()
  - setScale
```
public void setScale(float x,
                     float y)
```
    Sets the component's scale factor around the pivot.
    The scale factor is used to control the scale effect of the component based on its original size.
    
    参数:
    
    x - Indicates the scale factor in the x-axis direction.
    
    y - Indicates the scale factor in the y-axis direction.
    
    从以下版本开始:
    
    4
  - setTranslationX
```
public void setTranslationX(float translationX)
```
    Sets the horizontal position of the component relative to its left position.
    This value is the distance at which the component has been moved horizontally relative to the getLeft() position. The rendering position will need to be adjusted accordingly.
    
    参数:
    
    translationX - Indicates the horizontal shift of the component relative to its left position, in pixels.
    
    另请参阅:
    
    setTranslationY(float), getTranslationX(), getTranslationY()
  - setTranslationY
```
public void setTranslationY(float translationY)
```
    Sets the vertical position of the component relative to its top position.
    This value is the distance at which the component has been moved vertically relative to the getTop() position. The rendering position will need to be adjusted accordingly.
    
    参数:
    
    translationY - Indicates the vertical shift of the component relative to its top position, in pixels.
    
    另请参阅:
    
    setTranslationX(float), getTranslationX(), getTranslationY()
  - setTranslationZ
```
public void setTranslationZ(float translationZ)
```
    Sets the depth location change of this component in the direction perpendicular to the screen.
    
    参数:
    
    translationZ - Indicates the depth location change of this component.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    getTranslationZ()
  - setTranslation
```
public void setTranslation(float x,
                           float y)
```
    Sets the component's horizontal translation relative to its left boundary and the vertical translation relative to its top boundary.
    
    参数:
    
    x - Indicates the horizontal translation to set, in pixels.
    
    y - Indicates the vertical translation to set, in pixels.
    
    从以下版本开始:
    
    4
  - getRotation
```
public float getRotation()
```
    Obtains the degrees that the component is rotated around the Z axis relative to the parent layout.
    
    返回:
    
    Returns the degrees of rotation.
    
    另请参阅:
    
    setRotation(float)
  - getPivotX
```
public float getPivotX()
```
    Obtains the X-axis coordinate of the point around which the component is rotated and scaled, that is, the pivot point.
    This position is relative to the parent layout.
    
    返回:
    
    Returns the X-axis coordinate of the pivot point.
    
    另请参阅:
    
    setPivotX(float), setPivotY(float), getPivotY()
  - getPivotY
```
public float getPivotY()
```
    Obtains the Y-axis coordinate of the pivot point relative to the parent layout.
    
    返回:
    
    Returns the Y-axis coordinate of the pivot point.
    
    另请参阅:
    
    setPivotX(float), setPivotY(float), getPivotX()
  - getPivot
```
public Point getPivot()
```
    Obtains the pivot relative to the parent layout.
    
    返回:
    
    Returns a Point representing the pivot.
    
    从以下版本开始:
    
    4
  - getScaleX
```
public float getScaleX()
```
    Obtains the component's scaling factor in the X direction around the pivot point relative to the parent layout.
    
    返回:
    
    Returns the scaling factor.
    
    另请参阅:
    
    setScaleX(float), setScaleY(float), getScaleY()
  - getScaleY
```
public float getScaleY()
```
    Obtains the component's scaling factor in the Y direction around the pivot point relative to the parent layout.
    
    返回:
    
    Returns the scaling factor.
    
    另请参阅:
    
    setScaleX(float), setScaleY(float), getScaleX()
  - getScale
```
public DimensFloat getScale()
```
    Obtains the component's scale factor around the pivot relative to the parent layout. The scale factor is used to control the scale effect of the component based on its original size.
    
    返回:
    
    Returns a DimensFloat representing the scale factor.
    
    从以下版本开始:
    
    4
  - getTranslationX
```
public float getTranslationX()
```
    Obtains the horizontal translation of the component relative to its left position.
    
    返回:
    
    Returns the horizontal translation in pixels.
    
    另请参阅:
    
    setTranslationX(float), setTranslationY(float), getTranslationY()
  - getTranslationY
```
public float getTranslationY()
```
    Obtains the vertical translation of the component relative to its top position.
    
    返回:
    
    Returns the vertical translation in pixels.
    
    另请参阅:
    
    setTranslationX(float), setTranslationY(float), getTranslationX()
  - getTranslationZ
```
public float getTranslationZ()
```
    Obtains the depth location change of this component in the direction perpendicular to the screen.
    
    返回:
    
    Returns depth location change of this component.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    setTranslationZ(float)
  - getTranslation
```
public DimensFloat getTranslation()
```
    Obtains the component's horizontal translation relative to its left boundary and the vertical translation relative to its top boundary.
    
    返回:
    
    Returns a DimensFloat representing the horizontal and vertical translation, in pixels.
    
    从以下版本开始:
    
    4
  - setAltitude
```
public void setAltitude(float altitude)
```
    Sets the basic depth location of this component in the direction perpendicular to the screen.
    
    参数:
    
    altitude - Indicates the basic depth location of this component.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    getAltitude()
  - getAltitude
```
public float getAltitude()
```
    Obtains the basic depth location of this component in the direction perpendicular to the screen.
    
    返回:
    
    Returns basic depth location of this component.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    setAltitude(float)
  - setShadowColor
```
public void setShadowColor(Color color)
```
    Sets the shadow's color of Component.
    
    参数:
    
    color - Indicates the color to set.
    
    从以下版本开始:
    
    7
  - getShadowColor
```
public Color getShadowColor()
```
    Obtains the shadow's color of Component.
    
    返回:
    
    Returns the color of the shadow.
    
    从以下版本开始:
    
    7
  - getResourceManager
```
public ResourceManager getResourceManager()
```
    Obtains the resource manager associated with the context.
    
    返回:
    
    Returns the resource manager associated with the context.
    
    从以下版本开始:
    
    3
  - getComponentTreeObserver
```
public ComponentTreeObserver getComponentTreeObserver()
```
    Obtains the ComponentTreeObserver for the component.
    
    返回:
    
    Returns the ComponentTreeObserver for the component.
    
    从以下版本开始:
    
    3
  - scrollTo
```
public void scrollTo(int x,
                     int y)
```
    Sets the target position you want the component to scroll to.
    
    参数:
    
    x - Indicates the X-axis coordinate to scroll to.
    
    y - Indicates the Y-axis coordinate to scroll to.
  - scrollBy
```
public void scrollBy(int x,
                     int y)
```
    Sets the offset by which the component is scrolled.
    
    参数:
    
    x - Indicates the X-axis distance to scroll by.
    
    y - Indicates the Y-axis distance to scroll by.
    
    从以下版本开始:
    
    5
  - getSelfVisibleRect
```
public boolean getSelfVisibleRect(Rect rect)
```
    Allows to get local visible Rect (related to component's parent)
    
    参数:
    
    rect - Rect container to save visible Rect values
    
    返回:
    
    true if the component contains visible Rect, false otherwise
    
    从以下版本开始:
    
    4
  - getVisibleRectOnScreen
```
public boolean getVisibleRectOnScreen(Rect rect,
                                      int[] position)
```
    Obtains the visible rectangle area of a component in relative to the upper left corner of the screen. The visible area is an area of the component that has not been cropped by its parent component.
    Note that the visible area obtained by using this method is the visible area of the current frame. If you want to obtain the visible area of the next frame, you need to call this method in LayoutRefreshedListener#onRefreshed(Component).
    
    参数:
    
    rect - Indicates the visible rectangle area. When this method returns true, this parameter saves the visible rectangle area of the component in relative to the upper left corner of the screen. When this method returns false, the top, bottom, left, and right coordinates of the visible rectangle are all 0.
    
    position - Indicates the position. When this method returns true, this parameter saves the coordinates of the component in relative to the upper left corner of the screen. When this method returns false, the coordinates saved in this parameter are all 0.
    
    返回:
    
    Returns true if the current component has a visible rectangle area on its parent component; returns false otherwise.
    
    从以下版本开始:
    
    7
  - getMatrix
```
public Matrix getMatrix()
```
    Obtains the conversion matrix of the current component. The matrix contains information such as the rotation, translation, and scaling of the component.
    
    返回:
    
    Returns the conversion matrix of the current component.
    
    从以下版本开始:
    
    7
  - isIdentityMatrix
```
public boolean isIdentityMatrix()
```
    Checks whether the conversion matrix of the current component is an identity matrix. You can use this method to check whether the component has been translated, rotated, or scaled.
    
    返回:
    
    Returns true if the current component is an identity matrix; returns false otherwise.
    
    从以下版本开始:
    
    7
  - getWindowVisibleRect
```
public boolean getWindowVisibleRect(Rect visibleRect)
```
    Obtain the visible rect of the window where the component is located. The visible rect is an area in which a window can display content to user, and it can be changed by status bar, navigation bar and input method.
    The visible rect of the window can only be obtained by root Component in the slice.
    
    参数:
    
    visibleRect - Rect container to save visible rect values of window
    
    返回:
    
    true if the component contains visible Rect, false otherwise
    
    从以下版本开始:
    
    5
  - setAlpha
```
public void setAlpha(float alpha)
```
    Sets the alpha value of the component.
    0.0f means the component is completely transparent and 1.0f means the component is completely opaque.
    
    参数:
    
    alpha - Indicates the alpha value of the component, ranging from 0.0f to 1.0f.
  - getAlpha
```
public float getAlpha()
```
    Obtains the alpha value of a component.
    0.0f means the component is completely transparent and 1.0f means the component is completely opaque.
    
    返回:
    
    Returns the alpha value of the component, ranging from 0.0f to 1.0f.
  - setComponentDescription
```
public void setComponentDescription(CharSequence componentDescription)
```
    Sets a description of the content in a component.
    
    参数:
    
    componentDescription - Indicates the description of the content in the component.
    
    从以下版本开始:
    
    4
  - getComponentDescription
```
public CharSequence getComponentDescription()
```
    Obtains the description of the content in a component.
    
    返回:
    
    Returns the description of the content in the component.
    
    从以下版本开始:
    
    4
  - findComponentById
```
public <T extends Component> T findComponentById(int id)
```
    Finds the component with the given ID.
    If the ID of the current component itself matches the given ID, the current component is returned. Otherwise, null is returned.
    
    参数:
    
    id - Indicates a unique identifier of a component.
    
    返回:
    
    Returns the component whose ID matches the given ID; returns null if no component is found.
  - findFocus
```
public Component findFocus()
```
    Obtains the component that currently has focus among its descendant components and itself.
    If the component is a simple component and currently has focus, the component is returned. Otherwise, null is returned. If the component has descendants and one of the descendants has focus, the focused descendant is returned. If no descendant has focus, null is returned.
    
    返回:
    
    Returns the focused component; or null if no focused component can be found.
  - findNextFocusableComponent
```
public Component findNextFocusableComponent(int direction)
```
    Finds the next component to take focus.
    The method returns the next focusable component in a given direction from the component that currently has focus. If the next focusable component is not specified, the closest sibling component in the given direction is returned.
    
    参数:
    
    direction - Indicates the focus moving direction. The value can be one of the following: FOCUS_SIDE_LEFT, FOCUS_SIDE_TOP, FOCUS_SIDE_RIGHT, FOCUS_SIDE_BOTTOM,FOCUS_NEXT, or FOCUS_PREVIOUS.
    
    返回:
    
    Returns the next component to receive focus, or null if no such component can be found.
    
    从以下版本开始:
    
    4
  - findRequestNextFocus
```
public boolean findRequestNextFocus(int side)
```
    Finds the next component to gain focus and requests focus for it.
    This method finds the next focusable component in a given direction from the currently focused component. If the next focusable component is not found, the closest sibling component in the given direction will be returned.
    
    参数:
    
    side - Indicates the focus moving direction. The value can be: FOCUS_SIDE_LEFT, FOCUS_SIDE_TOP, FOCUS_SIDE_RIGHT, FOCUS_SIDE_BOTTOM, FOCUS_NEXT, or FOCUS_PREVIOUS.
    
    返回:
    
    Returns true if the component or one of its child components has gained focus; returns false otherwise.
    
    从以下版本开始:
    
    3
  - setUserNextFocus
```
public void setUserNextFocus(int side,
                             int id)
```
    Sets the next component to give focus to.
    The next component to give focus to must be another child of the same parent. Otherwise, a null pointer will be obtained when findNextFocusableComponent(int) is called.
    
    参数:
    
    side - Indicates the focus moving direction. The value can be one of the following: FOCUS_SIDE_LEFT, FOCUS_SIDE_TOP, FOCUS_SIDE_RIGHT, FOCUS_SIDE_BOTTOM,FOCUS_NEXT, or FOCUS_PREVIOUS.
    
    id - Indicates the ID of the next component to give focus to.
  - getUserNextFocus
```
public int getUserNextFocus(int side)
```
    Obtains the ID of the next component to give focus to.
    
    参数:
    
    side - Indicates the focus moving direction. The value can be one of the following: FOCUS_SIDE_LEFT, FOCUS_SIDE_TOP, FOCUS_SIDE_RIGHT, FOCUS_SIDE_BOTTOM,FOCUS_NEXT, or FOCUS_PREVIOUS.
    
    返回:
    
    Returns the ID of the next component to give focus to; returns -1 if no such component is set.
  - subscribeVoiceEvents
```
public void subscribeVoiceEvents(Component.VoiceEvent voiceEvent)
```
    Subscribes to a specified voice event of this component.
    
    参数:
    
    voiceEvent - Indicates the voice event.
    
    从以下版本开始:
    
    3
  - unsubscribeVoiceEvents
```
public void unsubscribeVoiceEvents()
```
    Unsubscribes from all voice events subscribed to by the current component at a time.
  - setSpeechEventListener
```
public void setSpeechEventListener(Component.SpeechEventListener listener)
```
    Sets a listener for voice events in this component.
    
    参数:
    
    listener - Indicates the listener to set for voice events.
    
    从以下版本开始:
    
    3
  - getSpeechEventListener
```
public Component.SpeechEventListener getSpeechEventListener()
```
    Obtains the listener set by setSpeechEventListener(ohos.agp.components.Component.SpeechEventListener).
    
    返回:
    
    Returns the listener.
    
    从以下版本开始:
    
    4
  - setTag
```
public void setTag(Object tag)
```
    Sets the tag associated with a component.
    
    参数:
    
    tag - Indicates the component's tag.
    
    另请参阅:
    
    getTag()
  - getTag
```
public Object getTag()
```
    Obtains the tag of a component.
    
    返回:
    
    Returns the component's tag.
    
    另请参阅:
    
    setTag(Object)
  - enableScrollBar
```
public void enableScrollBar(int direction,
                            boolean enabled)
```
    Sets whether to enable the scroll bar for this component.
    
    参数:
    
    direction - Indicates the scroll direction, either AXIS_X for horizontal scroll or AXIS_Y for vertical scroll.
    
    enabled - Specifies whether the scroll bar is enabled. The value true indicates the scroll bar is enabled, and the value false (default value) indicates the opposite case.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    isScrollBarOn(int), (boolean)
  - isScrollBarOn
```
public boolean isScrollBarOn(int direction)
```
    Checks whether the scroll bar is enabled for this component.
    
    参数:
    
    direction - Indicates the scroll direction, either AXIS_X for horizontal scroll or AXIS_Y for vertical scroll.
    
    返回:
    
    Returns true if the scroll bar is enabled; returns false otherwise.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    enableScrollBar(int, boolean)
  - setScrollbarFadingEnabled
```
@Deprecated
public void setScrollbarFadingEnabled(boolean enabled)
```
    已过时。 This change is effective since API version 6. Replaced by enableFadeEffect(FadeEffectEnum) or disableFadeEffect(FadeEffectEnum)
    
    Sets whether to hide scroll bars when a component is not scrolling.
    
    参数:
    
    enabled - Specifies whether to hide scroll bars. true indicates that the scroll bars will be hidden; false indicates the opposite case.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    isScrollbarFadingOn(), enableScrollBar(int, boolean)
  - isScrollbarFadingOn
```
@Deprecated
public boolean isScrollbarFadingOn()
```
    已过时。 This change is effective since API version 6. Replaced by isFadeEffected(FadeEffectEnum)
    
    Checks whether scroll bars will fade.
    
    返回:
    
    Returns true if scroll bars will fade; returns false otherwise.
    
    从以下版本开始:
    
    5
    
    另请参阅:
    
    enableFadeEffect(FadeEffectEnum), disableFadeEffect(FadeEffectEnum), setScrollbarFadingDelay(int), setScrollbarFadingDuration(int)
  - enableFadeEffect
```
public void enableFadeEffect(Component.FadeEffectEnum fadeEffectEnum)
```
    Enables the fade-out effect of the scroll bar or boundary indicator when the component is not scrolled.
    
    参数:
    
    fadeEffectEnum - Indicates the component indicator to set.
    
    从以下版本开始:
    
    5
  - disableFadeEffect
```
public void disableFadeEffect(Component.FadeEffectEnum fadeEffectEnum)
```
    Disables the fade-out effect of the scroll bar or boundary indicator when the component is not scrolled.
    
    参数:
    
    fadeEffectEnum - Indicates the component indicator to set.
    
    从以下版本开始:
    
    5
  - isFadeEffected
```
public boolean isFadeEffected(Component.FadeEffectEnum fadeEffectEnum)
```
    Checks whether the fade-out effect is enabled for the scroll bar or boundary indicator.
    
    参数:
    
    fadeEffectEnum - Indicates the component indicator.
    
    返回:
    
    Returns true if the fade-out effect is enabled; returns false (default value) otherwise.
    
    从以下版本开始:
    
    5
  - setScrollbarFadingDelay
```
public void setScrollbarFadingDelay(int delay)
```
    Sets the delay before a scrollbar is fading.
    
    参数:
    
    delay - Indicates the delay before the scrollbar is fading, in milliseconds.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarFadingEnabled(boolean), getScrollbarFadingDelay()
  - setScrollbarRoundRect
```
public void setScrollbarRoundRect(boolean isRoundRect)
```
    Sets the shape of the scroll bar.
    
    参数:
    
    isRoundRect - Specifies whether the scroll bar is round. The value true indicates a rounded border, and the value false indicates a rectangular border.
    
    从以下版本开始:
    
    4
  - setScrollbarRadius
```
public void setScrollbarRadius(float radius)
```
    Sets the radius for the scroll bar's rounded border.
    
    参数:
    
    radius - Indicates the radius to set.
    
    从以下版本开始:
    
    4
  - getScrollbarRoundRect
```
public boolean getScrollbarRoundRect()
```
    Obtains the rounded border of the scroll bar.
    
    返回:
    
    Returns true if the scroll bar has a rounded border; returns false if the scroll bar has a rectangular border.
    
    从以下版本开始:
    
    4
  - getScrollbarRadius
```
public float getScrollbarRadius()
```
    Obtains the radius of the scroll bar's rounded border.
    
    返回:
    
    Returns the radius of the scroll bar's rounded border.
    
    从以下版本开始:
    
    4
  - getScrollbarFadingDelay
```
public int getScrollbarFadingDelay()
```
    Obtains the delay before a scrollbar is fading.
    
    返回:
    
    Returns the delay (in milliseconds) before the scrollbar is fading. The default value is 500 milliseconds.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarFadingEnabled(boolean), setScrollbarFadingDelay(int)
  - setScrollbarFadingDuration
```
public void setScrollbarFadingDuration(int duration)
```
    Sets the fading duration of a scrollbar.
    
    参数:
    
    duration - Indicates the fading duration of the scrollbar, in milliseconds.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarFadingEnabled(boolean), getScrollbarFadingDuration()
  - getScrollbarFadingDuration
```
public int getScrollbarFadingDuration()
```
    Obtains the fading duration of a scrollbar.
    
    返回:
    
    Returns the scrollbar fading duration, in milliseconds. The default value is 300 milliseconds.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarFadingEnabled(boolean), setScrollbarFadingDuration(int)
  - setScrollbarColor
```
public void setScrollbarColor(Color color)
```
    Sets the color of a scroll bar.
    
    参数:
    
    color - Indicates the color of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    getScrollbarColor()
  - getScrollbarColor
```
public Color getScrollbarColor()
```
    Obtains the color of a scroll bar.
    
    返回:
    
    Returns the color of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    setScrollbarColor(Color)
  - setScrollbarBackgroundColor
```
public void setScrollbarBackgroundColor(Color color)
```
    Sets the background color of a scroll bar.
    
    参数:
    
    color - Indicates the background color of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    getScrollbarBackgroundColor()
  - getScrollbarBackgroundColor
```
public Color getScrollbarBackgroundColor()
```
    Obtains the background color of a scroll bar.
    
    返回:
    
    Returns the background color of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    setScrollbarBackgroundColor(Color)
  - setScrollbarThickness
```
public void setScrollbarThickness(int thickness)
```
    Sets the thickness of a scroll bar.
    
    参数:
    
    thickness - Indicates the thickness of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    getScrollbarThickness()
  - getScrollbarThickness
```
public int getScrollbarThickness()
```
    Obtains the thickness of a scroll bar.
    
    返回:
    
    Returns the thickness of the scroll bar.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    setScrollbarThickness(int)
  - setScrollbarStartAngle
```
public void setScrollbarStartAngle(float start)
```
    Sets the start angle for a rounded scroll bar. This method is applicable only when OVAL_MODE is used.
    
    参数:
    
    start - Indicates the start angle of the rounded scroll bar.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    getScrollbarStartAngle()
  - getScrollbarStartAngle
```
public float getScrollbarStartAngle()
```
    Obtains the start angle of a rounded scroll bar. This method is applicable only when OVAL_MODE is used.
    
    返回:
    
    Returns the start angle of the rounded scroll bar.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarStartAngle(float)
  - setScrollbarSweepAngle
```
public void setScrollbarSweepAngle(float sweep)
```
    Sets the sweep angle for a rounded scroll bar. This method is applicable only when OVAL_MODE is used.
    
    参数:
    
    sweep - Indicates the sweep angle for a rounded scroll bar.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    getScrollbarSweepAngle()
  - getScrollbarSweepAngle
```
public float getScrollbarSweepAngle()
```
    Obtains the sweep angle of a rounded scroll bar. This method is applicable only when OVAL_MODE is used.
    
    返回:
    
    Returns the sweep angle of the rounded scroll bar.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setScrollbarSweepAngle(float)
  - setScrollbarOverlapEnabled
```
public void setScrollbarOverlapEnabled(boolean enabled)
```
    Sets whether the scroll bar overlaps with the content. By default, the scroll bar overlaps with the content.
    
    参数:
    
    enabled - Indicates whether the scroll bar overlaps with the content. true indicates that the scroll bar overlaps with the content; false indicates otherwise.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    isScrollbarOverlapEnabled()
  - setVibrationEffectEnabled
```
public void setVibrationEffectEnabled(boolean enabled)
```
    Sets whether the vibration effect is enabled.
    
    参数:
    
    enabled - Indicates whether the vibration effect is enabled.
    
    从以下版本开始:
    
    5
  - isVibrationEffectEnabled
```
public boolean isVibrationEffectEnabled()
```
    Checks whether vibration effect is enabled.
    
    返回:
    
    Returns true if vibration effect is enabled; returns false otherwise.
    
    从以下版本开始:
    
    5
  - isScrollbarOverlapEnabled
```
public boolean isScrollbarOverlapEnabled()
```
    Checks whether the scroll bar overlaps with the content.
    
    返回:
    
    Returns true if the scroll bar overlaps with the content; returns false otherwise.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    setScrollbarOverlapEnabled(boolean)
  - isRtl
```
public boolean isRtl()
```
    Checks whether the component is laid out from right to left.
    By default, a component is laid out from left to right and from top to bottom.
    
    返回:
    
    Returns true if the component is laid out from right to left; and returns false otherwise.
    
    从以下版本开始:
    
    4
  - setCentralScrollMode
```
public void setCentralScrollMode(boolean centralMode)
```
    Sets whether to enable the central scroll mode to always display a component item at the center of a component.
    
    参数:
    
    centralMode - Specifies whether to enable the central scroll mode. The default value falseindicates that the central scroll mode will be disabled, and the value true indicates enabled.
    
    从以下版本开始:
    
    3
  - getCentralScrollMode
```
public boolean getCentralScrollMode()
```
    Obtains the state of the central scroll mode.
    
    返回:
    
    Returns the state of central scroll mode.
    
    从以下版本开始:
    
    3
  - setMode
```
public void setMode(int mode)
```
    Sets the showing mode of this component.
    When the parameter value is INHERITED_MODE (default value), the parent component's showing mode is used. When the parameter value is RECT_MODE, the content of this component is displayed in a rectangle. When the parameter value is OVAL_MODE, the content of this component is displayed in an ellipse.
    
    参数:
    
    mode - Indicates the showing mode of this component.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    getMode(), getModeResolved()
  - getMode
```
public int getMode()
```
    Obtains the showing mode of this component.
    
    返回:
    
    the showing mode. One of the values: INHERITED_MODE, RECT_MODE, OVAL_MODE
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    setMode(int), getModeResolved()
  - setScrollBarMode
```
public void setScrollBarMode(int scrollBarMode)
```
    Sets the mode of the scrollbar that is being displayed. If no mode is set for the scrollbar, the showing component's mode is used.
    When scrollBarMode is set to UNSPECIFIED_SCROLL_BAR_MODE, the scrollbar uses the same mode as the showing component. When this parameter is set to RECT_SCROLL_BAR_MODE, the scrollbar is displayed as a rectangle. When this parameter is OVAL_SCROLL_BAR_MODE, the scrollbar is displayed as an ellipse.
    
    参数:
    
    scrollBarMode - Indicates the mode of the scrollbar to set.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    getScrollBarMode()
  - getScrollBarMode
```
public int getScrollBarMode()
```
    Obtains the mode of the scrollbar that is being displayed.
    
    返回:
    
    Returns the scrollbar mode, which can be UNSPECIFIED_SCROLL_BAR_MODE, RECT_SCROLL_BAR_MODE, or OVAL_SCROLL_BAR_MODE.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    setScrollBarMode(int)
  - getModeResolved
```
public int getModeResolved()
```
    Obtains the display mode of the device holding this component.
    
    返回:
    
    Returns the display mode, either RECT_MODE or OVAL_MODE.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setMode(int), getMode()
  - setCenterZoomFactor
```
public void setCenterZoomFactor(float scaleX,
                                float scaleY)
```
    Sets the zoom factor for scaling the center component item.
    The value can be DEFAULT_SCALE, greater than 1, less than 1, representing the default zoom factor, zoom-out factor, and zoom-in factor respectively.
    
    参数:
    
    scaleX - Indicates the zoom factor for scaling the center component item on X-axis.
    
    scaleY - Indicates the zoom factor for scaling the center component item on Y-axis.
    
    从以下版本开始:
    
    3
  - getCenterZoomFactor
```
public float[] getCenterZoomFactor()
```
    Obtains the zoom factor for scaling the center component item.
    
    返回:
    
    Returns the array of the X-axis and Y-axis coordinates of the zoom factor.
    
    从以下版本开始:
    
    3
  - informConfigurationChanged
```
public void informConfigurationChanged(Configuration config)
```
    Dispatches a configuration change event. The event processing logic is implemented by onAttributeConfigChanged(ohos.global.configuration.Configuration).
    
    参数:
    
    config - Indicates the latest configuration.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    onAttributeConfigChanged(Configuration)
  - onAttributeConfigChanged
```
protected void onAttributeConfigChanged(Configuration config)
```
    Called when a configuration is changed.
    
    参数:
    
    config - Indicates the latest configuration.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    informConfigurationChanged(Configuration)
  - setLayoutDirection
```
public void setLayoutDirection(Component.LayoutDirection layoutDirection)
```
    Sets the layout direction for this component.
    
    参数:
    
    layoutDirection - Indicates the layout direction to set.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    Component.LayoutDirection, getLayoutDirection(), getLayoutDirectionResolved()
  - getLayoutDirection
```
public Component.LayoutDirection getLayoutDirection()
```
    Obtains the layout direction of this component.
    
    返回:
    
    Returns the layout direction. For details about available values, see LayoutDirection.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    Component.LayoutDirection, setLayoutDirection(LayoutDirection), getLayoutDirectionResolved()
  - getLayoutDirectionResolved
```
public Component.LayoutDirection getLayoutDirectionResolved()
```
    Obtains the resolved layout direction of this component.
    
    返回:
    
    Returns LayoutDirection#RTL if the layout direction is RTL; returns LayoutDirection#LTR if the layout direction is LTR.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    Component.LayoutDirection, setLayoutDirection(LayoutDirection), getLayoutDirection()
  - setFadeEffectBoundaryWidth
```
public void setFadeEffectBoundaryWidth(int width)
```
    Sets the boundary width for the component's fade-effect area.
    
    参数:
    
    width - Indicates the boundary width to set, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    getFadeEffectBoundaryWidth()
  - getFadeEffectBoundaryWidth
```
public int getFadeEffectBoundaryWidth()
```
    Obtains the boundary width of the component's fade-effect area.
    
    返回:
    
    Returns the boundary width, in pixels.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectBoundaryWidth(int)
  - setFadeEffectColor
```
public void setFadeEffectColor(Color color)
```
    Sets the color displayed when producing the fade effect.
    
    参数:
    
    color - Indicates the color to set.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    getFadeEffectColor()
  - getFadeEffectColor
```
public Color getFadeEffectColor()
```
    Obtains the color displayed when producing the fade effect.
    
    返回:
    
    Returns the color.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectColor(Color)
  - onRtlChanged
```
protected void onRtlChanged(Component.LayoutDirection layoutDirection)
```
    Called when any RTL property has been changed.
    
    参数:
    
    layoutDirection - Indicates the value of the current layout direction.
    
    从以下版本开始:
    
    4
  - setBoundaryFadeEffectEnable
```
@Deprecated
public void setBoundaryFadeEffectEnable(boolean enable)
```
    已过时。 This change is effective since API version 6. Replaced by enableFadeEffect(FadeEffectEnum) or disableFadeEffect(FadeEffectEnum)
    
    Sets whether to display the boundary of the component's fade-effect area.
    
    参数:
    
    enable - Specifies whether to display the boundary of the component's fade-effect area. The value true indicates that the boundary is displayed, and false indicates the opposite case.
    
    从以下版本开始:
    
    5
  - isBoundaryFadeEffectEnable
```
@Deprecated
public boolean isBoundaryFadeEffectEnable()
```
    已过时。 This change is effective since API version 6. Replaced by isFadeEffected(FadeEffectEnum)
    
    Checks whether the boundary of the component's fade-effect area is drawn.
    
    返回:
    
    Returns true if the boundary is drawn; returns false (default value) otherwise.
    
    从以下版本开始:
    
    5
  - getBoundaryFadeEffectLeftRate
```
public float getBoundaryFadeEffectLeftRate()
```
    Obtains the rate multiplied by the basic boundary width to obtain the left boundary width of the component's fade-effect area.
    
    返回:
    
    Returns the rate multiplied to obtain the left boundary width. The default value is 0.0f.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectBoundaryWidth(int)
  - getBoundaryFadeEffectTopRate
```
public float getBoundaryFadeEffectTopRate()
```
    Obtains the rate multiplied by the basic boundary width to obtain the top boundary width of the component's fade-effect area.
    
    返回:
    
    Returns the rate multiplied to obtain the top boundary width. The default value is 0.0f.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectBoundaryWidth(int)
  - getBoundaryFadeEffectRightRate
```
public float getBoundaryFadeEffectRightRate()
```
    Obtains the rate multiplied by the basic boundary width to obtain the right boundary width of the component's fade-effect area.
    
    返回:
    
    Returns the rate multiplied to obtain the right boundary. The default value is 0.0f.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectBoundaryWidth(int)
  - getBoundaryFadeEffectBottomRate
```
public float getBoundaryFadeEffectBottomRate()
```
    Obtains the rate multiplied by the basic boundary width to obtain the bottom boundary width of the component's fade-effect area.
    
    返回:
    
    Returns the rate multiplied to obtain the bottom boundary. The default value is 0.0f.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    setFadeEffectBoundaryWidth(int)
  - enableSaveState
```
public void enableSaveState(boolean isEnabled)
```
    Sets whether this component and its child components can save their states.
    
    参数:
    
    isEnabled - Specifies whether this component and its child components can save their states. The value true means that they can save the states, and false means the opposite.
    
    从以下版本开始:
    
    7
  - isSaveStateEnabled
```
public boolean isSaveStateEnabled()
```
    Checks whether this component and its child components can save their states.
    
    返回:
    
    Returns true if this component and its child components can save their states; returns false otherwise.
    
    从以下版本开始:
    
    7
  - onSaveState
```
protected Sequenceable onSaveState()
```
    Called when the states of this component and its child components are to be saved.
    If a child class wants to save a specific state, you can override this method.
    
    返回:
    
    Returns a Sequenceable object that holds the state information.
    
    从以下版本开始:
    
    7
  - onRestoreState
```
protected void onRestoreState(Sequenceable state)
```
    Called when the states of this component and its child components are to be restored.
    If a child class wants to restore to a specific state, you can override this method.
    
    参数:
    
    state - Indicates the Sequenceable object that holds the state information.
    
    从以下版本开始:
    
    7
  - dispatchSaveState
```
protected void dispatchSaveState(PlainArray<Sequenceable> stateContainer)
```
    Distribute the state saving process to save the states of this component and its child components.
    
    参数:
    
    stateContainer - Indicates the container to hold the state information.
    
    从以下版本开始:
    
    7
  - dispatchRestoreState
```
protected void dispatchRestoreState(PlainArray<Sequenceable> stateContainer)
```
    Distribute the state restore process to restore the states of this component and its child components.
    
    参数:
    
    stateContainer - Indicates the container that holds the state information to be restored.
    
    从以下版本开始:
    
    7
  - saveComponentTreeState
```
public void saveComponentTreeState(PlainArray<Sequenceable> stateContainer)
```
    Saves the states of this component and its child components into a given container.
    
    参数:
    
    stateContainer - Indicates the container to hold the state information.
    
    从以下版本开始:
    
    7
  - restoreComponentTreeState
```
public void restoreComponentTreeState(PlainArray<Sequenceable> stateContainer)
```
    Restores the states of this component and its child components from a given container.
    
    参数:
    
    stateContainer - Indicates a PlainArray object that holds the states to be restored.
    
    从以下版本开始:
    
    7
  - setTransitionSymbol
```
public void setTransitionSymbol(String symbol)
```
    Sets transition symbol.
    
    参数:
    
    symbol - Indicates the transition symbol to set.
    
    从以下版本开始:
    
    7
  - getTransitionSymbol
```
public String getTransitionSymbol()
```
    Gets transition symbol.
    
    返回:
    
    Return symbol Indicates the transition symbol to set.
    
    从以下版本开始:
    
    7
  - getBaseLine
```
public int getBaseLine()
```
    Obtains the height from the baseline of the text to the top of the component.
    
    返回:
    
    Returns the height from the baseline of the text to the top of the component; returns -1 if the component does not support baseline alignment.
    
    从以下版本开始:
    
    7
  - hasOverlaps
```
public boolean hasOverlaps()
```
    Checks whether this component has overlapping content.
    
    返回:
    
    Returns true if the component has overlapping content; returns false otherwise.
    
    从以下版本开始:
    
    7

类 Component

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

ACCESSIBILITY_ADAPTABLE

ACCESSIBILITY_DISABLE

ACCESSIBILITY_ENABLE

AXIS_X

AXIS_Y

CONTOUR_BACKGROUND

CONTOUR_BORDER

CONTOUR_PADDING_BORDER

DEFAULT_SCALE

DRAG_DOWN

DRAG_HORIZONTAL

DRAG_HORIZONTAL_VERTICAL

DRAG_LEFT

DRAG_RIGHT

DRAG_UP

DRAG_VERTICAL

EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED

EVENT_TYPE_COMPONENT_ACCESSIBILITY_FOCUSED_CLEAR

EVENT_TYPE_COMPONENT_CLICKED

EVENT_TYPE_COMPONENT_FOCUSED

EVENT_TYPE_COMPONENT_LONG_CLICKED

EVENT_TYPE_COMPONENT_SCROLLED

EVENT_TYPE_COMPONENT_SELECTED

EVENT_TYPE_COMPONENT_TEXT_UPDATE

EVENT_TYPE_NOTICE

EVENT_TYPE_NOTIFICATION_STATE_UPDATE

EVENT_TYPE_TOAST_SHOW

EVENT_TYPE_WINDOW_STATE_UPDATE

FOCUS_ADAPTABLE

FOCUS_DISABLE

FOCUS_ENABLE

FOCUS_NEXT

FOCUS_PREVIOUS

FOCUS_SIDE_BOTTOM

FOCUS_SIDE_LEFT

FOCUS_SIDE_RIGHT

FOCUS_SIDE_TOP

HIDE

HORIZONTAL

ID_DEFAULT

INHERITED_MODE

INVISIBLE

OVAL_MODE

OVAL_SCROLL_BAR_MODE

POSITION_X_INDEX

POSITION_Y_INDEX

RECT_MODE

RECT_SCROLL_BAR_MODE

SCROLL_AUTO_STAGE

SCROLL_IDLE_STAGE

SCROLL_NORMAL_STAGE

UNSPECIFIED_SCROLL_BAR_MODE

VERTICAL

VISIBLE

mBackgroundElement

mCanvasForTaskOverContent

mCanvasForTaskUnderContent

mComponentParent

mContext

mDrawTaskOverContent

mDrawTaskUnderContent

mEstimateSizeListener

mForegroundElement

mForwardHoverListener

mHoverEventListener

mKeyEventListener

mMouseEventListener

mPosition

mRotationEventListener

mShadowElement

mUnconsumedKeyEventListener

构造器详细资料

Component