程序包 ohos.agp.components

类 Slider

java.lang.Object

ohos.agp.components.Component

ohos.agp.components.ProgressBar

ohos.agp.components.AbsSlider

ohos.agp.components.Slider

public class Slider
extends AbsSlider

Provides a progress component that allows for dragging operations on the screen.

You can change the progress of an event, for example, to fast-forward music playback. If the Slider is used to indicate the completion state of a task, the slider cannot be dragged on the screen.

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	Slider.ValueChangedListener	Provides callbacks to listen for and process change events of a Slider.

从类继承的嵌套类/接口 ohos.agp.components.AbsSlider

AbsSlider.Formatter

从类继承的嵌套类/接口 ohos.agp.components.Component

Component.BindStateChangedListener, Component.CanAcceptScrollListener, Component.ClickedListener, Component.ComponentStateChangedListener, Component.ContourRefreshedListener, Component.DefSpeechEventListener, Component.DoubleClickedListener, Component.DragFeedbackProvider, Component.DraggedListener, Component.DrawTask, Component.EditEventListener, Component.EstimateSizeListener, Component.EstimateSpec, Component.FadeEffectEnum, Component.FocusChangedListener, Component.ForwardHoverListener, Component.ForwardTouchListener, Component.GestureType, Component.HoverEventListener, Component.KeyEventListener, Component.LayoutDirection, Component.LayoutRefreshedListener, Component.LongClickedListener, Component.MeasureSpec, Component.MouseEventListener, Component.MousePointerStyleListener, Component.OnDragListener, Component.RotationEventListener, Component.ScaledListener, Component.ScrolledListener, Component.ShadowDevice, Component.ShadowMode, Component.ShadowSize, Component.SpeechEventListener, Component.TouchEventListener, Component.UnconsumedKeyEventListener, Component.VoiceEvent

从类继承的嵌套类/接口 ohos.agp.components.ProgressBar

ProgressBar.BarObserver

字段概要

字段

限定符和类型	字段	说明
protected Slider.ValueChangedListener	mValueChangedListener	Indicates a listener to receive notifications of progress level changes.

从类继承的字段 ohos.agp.components.Component

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, mBackgroundElement, mCanvasForTaskOverContent, mCanvasForTaskUnderContent, mComponentParent, mContext, mDrawTaskOverContent, mDrawTaskUnderContent, mEstimateSizeListener, mForegroundElement, mForwardHoverListener, mHoverEventListener, mKeyEventListener, mMouseEventListener, mPosition, mRotationEventListener, mShadowElement, mUnconsumedKeyEventListener, 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

构造器概要

构造器

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

方法概要

限定符和类型	方法	说明
Element[]	getAdjustButtonsElements()	Obtains the Element objects of all increase and decrease buttons.
Element	getDecreaseButton()	Obtains the object used to draw a decrease button.
Component.ClickedListener	getDecreaseButtonClickedListener()	Obtains the listener for the decrease button.
Element	getIncreaseButton()	Obtains the object used to draw an increase button.
Component.ClickedListener	getIncreaseButtonClickedListener()	Obtains the listener for the increase button.
Element	getThumbElement()	Obtains the current element thumb.
Slider.ValueChangedListener	getValueChangedListener()	Obtains the the listener for monitoring change events of this Slider.
void	setAdjustButtons(Element increaseElement, Component.ClickedListener increaseListener, Element decreaseElement, Component.ClickedListener decreaseListener)	Sets increase and decrease buttons for this Slider.
void	setDecreaseButton(Element element, Component.ClickedListener listener)	Sets a decrease button for this slider.
void	setDecreaseButtonClickedListener(Component.ClickedListener listener)	Sets a listener for the decrease button of this Slider.
void	setDecreaseButtonElement(Element element)	Sets a decrease button for this Slider.
void	setIncreaseButton(Element element, Component.ClickedListener listener)	Sets an increase button for this slider.
void	setIncreaseButtonClickedListener(Component.ClickedListener listener)	Sets a listener for the increase button of this Slider.
void	setIncreaseButtonElement(Element element)	Sets an increase button for this Slider.
void	setThumbElement(Element element)	Sets an element thumb.
void	setValueChangedListener(Slider.ValueChangedListener listener)	Sets a listener to listen for change events of a slider.

从类继承的方法 ohos.agp.components.AbsSlider

getFormatter, setFormatter

从类继承的方法 ohos.agp.components.Component

addDrawTask, addDrawTask, addScrolledListener, announceAccessibility, arrange, bindCornerMark, callOnClick, canScroll, clearFocus, createAnimatorProperty, disableFadeEffect, dispatchRestoreState, dispatchSaveState, draw, enableCornerMark, enableFadeEffect, enableSaveState, enableScrollBar, estimateSize, executeDoubleClick, executeLongClick, findComponentById, findComponentHolderById, findFocus, findNextFocusableComponent, findRequestNextFocus, getAccessibility, getAccessibilityDescription, getAlpha, getAltitude, getBackgroundElement, getBaseLine, getBottom, getBoundaryFadeEffectBottomRate, getBoundaryFadeEffectLeftRate, getBoundaryFadeEffectRightRate, getBoundaryFadeEffectTopRate, getCenterZoomFactor, getCentralScrollMode, getClickedListener, getClipEnabled, getComponentDescription, getComponentMinSize, getComponentParent, getComponentPosition, getComponentSize, getComponentStateChangedListener, getComponentTreeObserver, getContentEnable, getContentPosition, getContentPositionX, getContentPositionY, getContext, getContour, getContourRefreshedListener, getCornerMark, getDragAcceptAngle, getDraggedListener, getEditEventListener, getEstimatedHeight, getEstimatedWidth, getFadeEffectBoundaryWidth, getFadeEffectColor, getFocusable, getFocusBorderEnable, getFocusBorderPadding, getFocusBorderRadius, getFocusBorderWidth, getForegroundElement, getForegroundGravity, getForwardHoverListener, getForwardTouchListener, getGesturePriority, getHeight, getHorizontalPadding, getHorizontalPosition, getHoverEventListener, getId, getKeyEventListener, getLayoutConfig, getLayoutDirection, getLayoutDirectionResolved, getLayoutRefreshedListener, getLeft, getLocationOnScreen, getMarginBottom, getMarginLeft, getMarginRight, getMargins, getMarginsLeftAndRight, getMarginsTopAndBottom, getMarginTop, getMatrix, getMinHeight, getMinWidth, getMode, getModeResolved, getMouseEventListener, getMousePointerStyleListener, getName, getPadding, getPaddingBottom, getPaddingEnd, getPaddingLeft, getPaddingRight, getPaddingStart, getPaddingTop, getPivot, getPivotX, getPivotY, getResourceManager, getRight, getRotation, getRotationEventListener, getRotationSensitivity, getScale, getScaledListener, getScaleX, getScaleY, getScrollbarBackgroundColor, getScrollbarColor, getScrollbarFadingDelay, getScrollbarFadingDuration, getScrollBarMode, getScrollbarRadius, getScrollbarRoundRect, getScrollbarStartAngle, getScrollbarSweepAngle, getScrollbarThickness, getScrollState, getScrollValue, getSelfVisibleRect, getShadowColor, getSpeechEventListener, getTag, getTop, getTouchEventListener, getTransitionSymbol, getTranslation, getTranslationX, getTranslationY, getTranslationZ, getUserNextFocus, getVerticalPadding, getVerticalPosition, getVisibility, getVisibleRectOnScreen, getWidth, getWindowVisibleRect, hasFocus, hasFocusedEffect, hasOverlaps, hideFocusBorder, informConfigurationChanged, invalidate, isBoundaryFadeEffectEnable, isBoundToWindow, isClickable, isClipToContourEnabled, isComponentDisplayed, isEnabled, isFadeEffected, isFocusable, isFocused, isIdentityMatrix, isLongClickOn, isPressed, isRtl, isSaveStateEnabled, isScrollbarFadingOn, isScrollBarOn, isScrollbarOverlapEnabled, isSelected, isSoundEnable, isTouchFocusable, isVibrationEffectEnabled, notifyAccessibility, onAttributeConfigChanged, onDrag, onRestoreState, onRtlChanged, onSaveState, performScale, playSound, postLayout, refreshContour, release, removeBindStateChangedListener, removeScrolledListener, requestFocus, requestForceForwardTouchEvent, restoreComponentTreeState, saveComponentTreeState, scrollBy, scrollTo, setAccessibility, setAccessibilityDescription, setAlpha, setAltitude, setBackground, setBindStateChangedListener, setBottom, setBoundaryFadeEffectEnable, setCanAcceptScrollListener, setCenterZoomFactor, setCentralScrollMode, setClickable, setClickedListener, setClipEnabled, setClipToContourEnabled, setComponentDescription, setComponentMinSize, setComponentPosition, setComponentPosition, setComponentSize, setComponentStateChangedListener, setContentEnable, setContentPosition, setContentPositionX, setContentPositionY, setContour, setContourRefreshedListener, setDoubleClickedListener, setDragAcceptAngle, setDraggedListener, setEditEventListener, setEnabled, setEstimatedSize, setEstimateSizeListener, setFadeEffectBoundaryWidth, setFadeEffectColor, setFocusable, setFocusBorderEnable, setFocusBorderPadding, setFocusBorderRadius, setFocusBorderRadius, setFocusBorderWidth, setFocusChangedListener, setFocusedEffect, setForeground, setForegroundGravity, setForwardHoverListener, setForwardTouchListener, setGesturePriority, setHeight, setHorizontalPadding, setHorizontalPosition, setHoverEventListener, setId, setKeyEventListener, setLayoutConfig, setLayoutDirection, setLayoutRefreshedListener, setLeft, setLongClickable, setLongClickedListener, setMarginBottom, setMarginLeft, setMarginRight, setMarginsLeftAndRight, setMarginsTopAndBottom, setMarginTop, setMinHeight, setMinWidth, setMode, setMouseEventListener, setMousePointerStyleListener, setName, setOnDragListener, setPadding, setPaddingBottom, setPaddingLeft, setPaddingRelative, setPaddingRight, setPaddingTop, setPivot, setPivot, setPivotX, setPivotY, setPosition, setPositionX, setPositionY, setPressState, setRight, setRotation, setRotationEventListener, setRotationSensitivity, setScale, setScaledListener, setScaleX, setScaleY, setScrollbarBackgroundColor, setScrollbarColor, setScrollbarFadingDelay, setScrollbarFadingDuration, setScrollbarFadingEnabled, setScrollBarMode, setScrollbarOverlapEnabled, setScrollbarRadius, setScrollbarRoundRect, setScrollbarStartAngle, setScrollbarSweepAngle, setScrollbarThickness, setScrolledListener, setSelected, setShadowColor, setShadowStyle, setSoundEnable, setSpeechEventListener, setTag, setTop, setTouchEventListener, setTouchFocusable, setTransitionSymbol, setTranslation, setTranslationX, setTranslationY, setTranslationZ, setUnconsumedKeyEventListener, setUserNextFocus, setVerticalPadding, setVerticalPosition, setVibrationEffectEnabled, setVisibility, setWidth, showFocusBorder, simulateClick, simulateDrag, startDragAndDrop, subscribeVoiceEvents, unsubscribeVoiceEvents

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 ohos.agp.components.ProgressBar

addBarObserver, enableDividerLines, getBackgroundInstructElement, getDividerLineColor, getDividerLinesNumber, getDividerLineThickness, getInfiniteModeElement, getMax, getMaxHeight, getMaxWidth, getMin, getOrientation, getProgress, getProgressColor, getProgressColors, getProgressElement, getProgressHintText, getProgressHintTextAlignment, getProgressHintTextColor, getProgressHintTextSize, getProgressWidth, getStep, getViceProgressElement, getViceProgressValue, isDividerLinesEnabled, isIndeterminate, isInfiniteMode, removeBarObserver, setDividerLineColor, setDividerLinesNumber, setDividerLineThickness, setIndeterminate, setInfiniteModeElement, setMaxHeight, setMaxValue, setMaxWidth, setMinValue, setOrientation, setProgressBackgroundElement, setProgressColor, setProgressColors, setProgressElement, setProgressHintText, setProgressHintTextAlignment, setProgressHintTextColor, setProgressHintTextSize, setProgressValue, setProgressWidth, setStep, setViceProgress, setViceProgressElement

字段详细资料

mValueChangedListener

protected Slider.ValueChangedListener mValueChangedListener

Indicates a listener to receive notifications of progress level changes.

ValueChangedListener stores the slider change listener and provides the callback to process change events of the slider.

构造器详细资料

Slider

public Slider(Context context)

Default constructor used to create a Slider instance by using the default attribute set and style.

参数:

context - Indicates the application context.

Slider

public Slider(Context context,
              AttrSet attrSet)

A constructor used to create a Slider 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.

Slider

public Slider(Context context,
              AttrSet attrSet,
              String styleName)

A constructor used to create a Slider 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.

方法详细资料

setValueChangedListener

public void setValueChangedListener(Slider.ValueChangedListener listener)

Sets a listener to listen for change events of a slider.

For example, the listener listens for the event when touching the slider or dragging it to change the current progress level.

参数:

listener - Indicates the listener.

另请参阅:

Slider.ValueChangedListener

getValueChangedListener

public Slider.ValueChangedListener getValueChangedListener()

Obtains the the listener for monitoring change events of this Slider.

返回:

Returns the listener.

从以下版本开始:

4

setIncreaseButton

public void setIncreaseButton(Element element,
                              Component.ClickedListener listener)

Sets an increase button for this slider.

The increase button is located on the top of a vertical slider or on the right of a horizontal slider.

参数:

element - Indicates the element object of the increase button.

listener - Indicates the increase button listener. If this parameter is null, the default increase button listener will be used.

从以下版本开始:

3

setIncreaseButtonElement

public void setIncreaseButtonElement(Element element)

Sets an increase button for this Slider.

参数:

element - Indicates the Element object for the increase button.

从以下版本开始:

4

setIncreaseButtonClickedListener

public void setIncreaseButtonClickedListener(Component.ClickedListener listener)

Sets a listener for the increase button of this Slider.

参数:

listener - Indicates the listener to set. If this parameter is null, the default listener is used for the increase button.

从以下版本开始:

4

getIncreaseButtonClickedListener

public Component.ClickedListener getIncreaseButtonClickedListener()

Obtains the listener for the increase button.

返回:

Returns the listener.

从以下版本开始:

4

getIncreaseButton

public Element getIncreaseButton()

Obtains the object used to draw an increase button.

返回:

Returns the object used to draw the increase button.

从以下版本开始:

3

setDecreaseButton

public void setDecreaseButton(Element element,
                              Component.ClickedListener listener)

Sets a decrease button for this slider.

The decrease button is located at the bottom of a vertical slider or on the left of a horizontal slider.

参数:

element - Indicates the element object of the decrease button.

listener - Indicates the decrease button listener. If this parameter is null, the default decrease button listener will be used.

从以下版本开始:

3

setDecreaseButtonElement

public void setDecreaseButtonElement(Element element)

Sets a decrease button for this Slider.

参数:

element - Indicates the Element object for the decrease button.

从以下版本开始:

4

setDecreaseButtonClickedListener

public void setDecreaseButtonClickedListener(Component.ClickedListener listener)

Sets a listener for the decrease button of this Slider.

参数:

listener - Indicates the listener to set. If this parameter is null, the default listener is used for the decrease button.

从以下版本开始:

4

getDecreaseButtonClickedListener

public Component.ClickedListener getDecreaseButtonClickedListener()

Obtains the listener for the decrease button.

返回:

Returns the listener.

从以下版本开始:

4

getDecreaseButton

public Element getDecreaseButton()

Obtains the object used to draw a decrease button.

返回:

Returns the object used to draw the decrease button.

从以下版本开始:

3

setAdjustButtons

public void setAdjustButtons(Element increaseElement,
                             Component.ClickedListener increaseListener,
                             Element decreaseElement,
                             Component.ClickedListener decreaseListener)

Sets increase and decrease buttons for this Slider.

The increase button is located at the top of a vertical slider or on the right of a horizontal slider; the decrease button is located at the bottom of a vertical slider or on the left side of a horizontal slider.

参数:

increaseElement - Indicates the Element object for the increase button.

increaseListener - Indicates the listener for the increase button. If this parameter is null, the default listener is used for the increase button.

decreaseElement - Indicates the Element object for the decrease button.

decreaseListener - Indicates the listener for the decrease button. If this parameter is null, the default listener is used for the decrease button.

从以下版本开始:

4

getAdjustButtonsElements

public Element[] getAdjustButtonsElements()

Obtains the Element objects of all increase and decrease buttons.

返回:

Returns a list of Element objects.

从以下版本开始:

4

getThumbElement

public Element getThumbElement()

从类复制的说明: AbsSlider

Obtains the current element thumb.

覆盖:

getThumbElement 在类中 AbsSlider

返回:

Indicates the current element thumb.

setThumbElement

public void setThumbElement(Element element)

从类复制的说明: AbsSlider

Sets an element thumb.

覆盖:

setThumbElement 在类中 AbsSlider

参数:

element - Indicates the element thumb.