ItemTouchExpand

java.lang.Object
- ohos.agp.components.listcomponent.ListAdornment
- - ohos.agp.components.listcomponent.ItemTouchExpand

```
public class ItemTouchExpand
extends ListAdornment
```
Implements the dragging and swiping effects for components.

从以下版本开始:

7

嵌套类概要
- 从类继承的嵌套类/接口 ohos.agp.components.listcomponent.ListAdornment
  ListAdornment.ListAdornmentCleaner

字段概要

字段
限定符和类型	字段	说明
`static int`	`DOWN`	Indicates the downward direction, which is used in swiping and dragging.
`static int`	`DRAG_ANIMATION_TYPE`	An animation indicating that the component is dragged.
`static int`	`END`	Indicates the horizontal end direction, which is used in swiping and dragging.
`static int`	`ITEM_TOUCH_DRAG_STATE`	Indicates that the component is being dragged.
`static int`	`ITEM_TOUCH_IDLE_STATE`	Indicates that the `ItemTouchHelper` is in the idle state.
`static int`	`ITEM_TOUCH_SWIPE_STATE`	Indicates that the component is being swiped.
`static int`	`LEFT`	Indicates the leftward direction, which is used in swiping and dragging.
`static int`	`RIGHT`	Indicates the rightward direction, which is used in swiping and dragging.
`static int`	`START`	Indicates the horizontal start direction, which is used in swiping and dragging.
`static int`	`SWIPE_CANCEL_ANIMATION_TYPE`	An animation indicating that component swiping has been canceled.
`static int`	`SWIPE_SUCCESS_ANIMATION_TYPE`	An animation indicating the component that can be swiped successfully.
`static int`	`UP`	Indicates the upward direction, which is used in swiping and dragging.

从类继承的字段 ohos.agp.components.listcomponent.ListAdornment
mNativePtr

构造器概要

构造器
构造器说明

ItemTouchExpand(ItemTouchExpandCallback callback)
A constructor used to create an ItemTouchExpand instance based on an ItemTouchExpandCallback.

构造器
构造器	说明
`ItemTouchExpand(ItemTouchExpandCallback callback)`	A constructor used to create an `ItemTouchExpand` instance based on an `ItemTouchExpandCallback`.

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`void`	`beginDrag(ComponentOwner componentOwner)`	Starts to drag a component.
`void`	`beginSwipe(ComponentOwner componentOwner)`	Starts to swipe a component.
`void`	`boundToListComponent(ListComponent listComponent)`	Binds this `ItemTouchExpand` instance to a `ListComponent`.
`protected void`	`createNativePtr()`	Creates a native pointer to this `ItemTouchExpand` instance.
`float`	`getSwipeEscapeSpeed()`	Obtains the minimum speed of the swipe operation.
`void`	`setSwipeEscapeSpeed(float swipeSpeed)`	Sets the minimum speed of the swipe operation.
`void`	`startMoveItem(int fromPos, int toPos)`	Move item from fromPos to toPos.

从类继承的方法 ohos.agp.components.listcomponent.ListAdornment
afterDrawCallback, beforeDrawCallback, getItemDeltas, getNativePtr

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
  - DOWN
```
public static final int DOWN
```
    Indicates the downward direction, which is used in swiping and dragging.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - DRAG_ANIMATION_TYPE
```
public static final int DRAG_ANIMATION_TYPE
```
    An animation indicating that the component is dragged.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - END
```
public static final int END
```
    Indicates the horizontal end direction, which is used in swiping and dragging.
    It can be LEFT or RIGHT based on the layout orientation of the ListComponent.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - ITEM_TOUCH_DRAG_STATE
```
public static final int ITEM_TOUCH_DRAG_STATE
```
    Indicates that the component is being dragged.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - ITEM_TOUCH_IDLE_STATE
```
public static final int ITEM_TOUCH_IDLE_STATE
```
    Indicates that the ItemTouchHelper is in the idle state.
    In this state, the user does not swipe or drag a component, or the latest swipe or drag action has not been triggered.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - ITEM_TOUCH_SWIPE_STATE
```
public static final int ITEM_TOUCH_SWIPE_STATE
```
    Indicates that the component is being swiped.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - LEFT
```
public static final int LEFT
```
    Indicates the leftward direction, which is used in swiping and dragging.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - RIGHT
```
public static final int RIGHT
```
    Indicates the rightward direction, which is used in swiping and dragging.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - START
```
public static final int START
```
    Indicates the horizontal start direction, which is used in swiping and dragging.
    It can be LEFT or RIGHT based on the layout orientation of the ListComponent.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - SWIPE_CANCEL_ANIMATION_TYPE
```
public static final int SWIPE_CANCEL_ANIMATION_TYPE
```
    An animation indicating that component swiping has been canceled.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - SWIPE_SUCCESS_ANIMATION_TYPE
```
public static final int SWIPE_SUCCESS_ANIMATION_TYPE
```
    An animation indicating the component that can be swiped successfully.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - UP
```
public static final int UP
```
    Indicates the upward direction, which is used in swiping and dragging.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - ItemTouchExpand
```
public ItemTouchExpand(ItemTouchExpandCallback callback)
```
    A constructor used to create an ItemTouchExpand instance based on an ItemTouchExpandCallback.
    You can call boundToListComponent(ohos.agp.components.ListComponent) to bind an ItemTouchExpand instance to a ListComponent.
    
    参数:
    
    callback - Indicates the callback for the behavior of the ItemTouchExpand instance.
    
    从以下版本开始:
    
    7
- 方法详细资料
  - createNativePtr
```
protected void createNativePtr()
```
    Creates a native pointer to this ItemTouchExpand instance.
    
    覆盖:
    
    createNativePtr 在类中 ListAdornment
    
    从以下版本开始:
    
    7
  - boundToListComponent
```
public void boundToListComponent(ListComponent listComponent)
```
    Binds this ItemTouchExpand instance to a ListComponent.
    If the ItemTouchExpand instance has been bound to another ListComponent, it will be unbound from that ListComponent first.
    
    参数:
    
    ListComponent - Indicates the ListComponent to which the ItemTouchExpand instance will be bound.
    
    从以下版本开始:
    
    7
  - setSwipeEscapeSpeed
```
public void setSwipeEscapeSpeed(float swipeSpeed)
```
    Sets the minimum speed of the swipe operation.
    
    参数:
    
    swipeSpeed - Indicates the minimum speed to set.
    
    从以下版本开始:
    
    7
  - getSwipeEscapeSpeed
```
public float getSwipeEscapeSpeed()
```
    Obtains the minimum speed of the swipe operation.
    
    返回:
    
    Returns the minimum speed if obtained; returns 0.F if an exception occurs.
    
    从以下版本开始:
    
    7
  - beginDrag
```
public void beginDrag(ComponentOwner componentOwner)
```
    Starts to drag a component.
    
    参数:
    
    componentOwner - Indicates the ComponentOwner of the component.
    
    从以下版本开始:
    
    7
  - beginSwipe
```
public void beginSwipe(ComponentOwner componentOwner)
```
    Starts to swipe a component.
    
    参数:
    
    componentOwner - Indicates the ComponentOwner of the component.
    
    从以下版本开始:
    
    7
  - startMoveItem
```
public void startMoveItem(int fromPos,
                          int toPos)
```
    Move item from fromPos to toPos.
    
    参数:
    
    fromPos - Start point.
    
    toPos - End point.

类 ItemTouchExpand

嵌套类概要

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

字段概要

从类继承的字段 ohos.agp.components.listcomponent.ListAdornment

构造器概要

方法概要

从类继承的方法 ohos.agp.components.listcomponent.ListAdornment

从类继承的方法 java.lang.Object

字段详细资料

DOWN

DRAG_ANIMATION_TYPE

END

ITEM_TOUCH_DRAG_STATE

ITEM_TOUCH_IDLE_STATE

ITEM_TOUCH_SWIPE_STATE

LEFT

RIGHT

START

SWIPE_CANCEL_ANIMATION_TYPE

SWIPE_SUCCESS_ANIMATION_TYPE

UP

构造器详细资料

ItemTouchExpand

方法详细资料

createNativePtr

boundToListComponent

setSwipeEscapeSpeed

getSwipeEscapeSpeed

beginDrag

beginSwipe

startMoveItem