```
public class ItemTouchHelperCallback
extends ItemTouchHelper.Callback
                    
```
This class is an implementation of Callback that enables Drag & Drop and Swipe actions. Drag and Swipe events are started depending by the configuration.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public interface`	`ItemTouchHelperCallback.AdapterCallback`	Internal interface for Adapter to listen for a move or swipe dismissal eventfrom a ItemTouchHelperCallback.
`public interface`	`ItemTouchHelperCallback.ViewHolderCallback`	Internal Interface for ViewHolder to notify of relevant callbacks from Callback.This listener, is to intend as a further way to display How a ViewHolder will displaythe middle and final activation state. Generally the final action should be handled by the listeners OnItemMoveListener and OnItemSwipeListener.

Field Summary

Fields
Modifier and Type	Field	Description
`protected boolean`	`longPressDragEnabled`
`protected boolean`	`handleDragEnabled`
`protected boolean`	`swipeEnabled`

Constructor Summary

Constructors
Constructor	Description
`ItemTouchHelperCallback(ItemTouchHelperCallback.AdapterCallback adapterCallback)`

Method Summary

Modifier and Type	Method	Description
`void`	`setLongPressDragEnabled(boolean isLongPressDragEnabled)`	Enable / Disable the drag operation with long press on the ViewHolder.
`void`	`setHandleDragEnabled(boolean handleDragEnabled)`	Enable / Disable the drag of the itemView with a handle view.
`void`	`setSwipeEnabled(boolean isSwipeEnabled)`	Enable the swipe operation on the ViewHolder.
`boolean`	`isLongPressDragEnabled()`
`boolean`	`isHandleDragEnabled()`
`boolean`	`canDropOver(RecyclerView recyclerView, RecyclerView.ViewHolder current, RecyclerView.ViewHolder target)`
`void`	`setMoveThreshold(float moveThreshold)`	Configures the fraction that the user should move the View to be considered as it isdragged.
`float`	`getMoveThreshold(RecyclerView.ViewHolder viewHolder)`
`boolean`	`isItemViewSwipeEnabled()`
`void`	`setSwipeThreshold(float threshold)`	Configures the fraction that the user should move the View to be considered as swiped.
`void`	`setSwipeFlags(int swipeFlags)`	Configures the directions in which the item can be swiped.
`float`	`getSwipeThreshold(RecyclerView.ViewHolder viewHolder)`	Returns the fraction that the user should move the View to be considered as swiped.The fraction is calculated with respect to RecyclerView's bounds.
`void`	`setDragAnimationDuration(long animationDuration)`	Sets the animation duration of Drag event, starting when the items is released.
`void`	`setSwipeAnimationDuration(long animationDuration)`	Sets the animation duration of Swipe removal event, starting when the items is released.
`long`	`getAnimationDuration(RecyclerView recyclerView, int animationType, float animateDx, float animateDy)`	Provides the animation duration for Drag and Swipe previously set with setDragAnimationDuration and setSwipeAnimationDuration.
`boolean`	`onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target)`
`void`	`onSwiped(RecyclerView.ViewHolder viewHolder, int direction)`
`int`	`getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)`
`void`	`onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState)`
`void`	`clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)`
`void`	`onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive)`

Methods inherited from class androidx.recyclerview.widget.ItemTouchHelper.Callback
canDropOver, chooseDropTarget, clearView, convertToAbsoluteDirection, convertToRelativeDirection, getAnimationDuration, getBoundingBoxMargin, getDefaultUIUtil, getMoveThreshold, getMovementFlags, getSwipeEscapeVelocity, getSwipeThreshold, getSwipeVelocityThreshold, interpolateOutOfBoundsScroll, isItemViewSwipeEnabled, isLongPressDragEnabled, makeFlag, makeMovementFlags, onChildDraw, onChildDrawOver, onMove, onMoved, onSelectedChanged, onSwiped
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ItemTouchHelperCallback
```
ItemTouchHelperCallback(ItemTouchHelperCallback.AdapterCallback adapterCallback)
```
- Method Detail
  - setLongPressDragEnabled
```
 void setLongPressDragEnabled(boolean isLongPressDragEnabled)
```
    Enable / Disable the drag operation with long press on the ViewHolder.
    Default value is {@code false}.
    
    Parameters:
    
    isLongPressDragEnabled - true to enable, false to disable
  - setHandleDragEnabled
```
 void setHandleDragEnabled(boolean handleDragEnabled)
```
    Enable / Disable the drag of the itemView with a handle view.
    Default value is {@code false}.
    
    Parameters:
    
    handleDragEnabled - true to activate, false to disable
  - setSwipeEnabled
```
 void setSwipeEnabled(boolean isSwipeEnabled)
```
    Enable the swipe operation on the ViewHolder.
    Default value is {@code false}.
    
    Parameters:
    
    isSwipeEnabled - true to enable swipe, false to disable
  - isLongPressDragEnabled
```
 boolean isLongPressDragEnabled()
```
  - isHandleDragEnabled
```
 boolean isHandleDragEnabled()
```
  - canDropOver
```
 boolean canDropOver(RecyclerView recyclerView, RecyclerView.ViewHolder current, RecyclerView.ViewHolder target)
```
  - setMoveThreshold
```
 void setMoveThreshold(float moveThreshold)
```
    Configures the fraction that the user should move the View to be considered as it isdragged. After a view is moved this amount, ItemTouchHelper starts checking for Viewsbelow it for a possible drop.
    Default value is {@code 0.5f}.
    
    Parameters:
    
    moveThreshold - A float value that denotes the fraction of the View size.
  - getMoveThreshold
```
 float getMoveThreshold(RecyclerView.ViewHolder viewHolder)
```
  - isItemViewSwipeEnabled
```
 boolean isItemViewSwipeEnabled()
```
  - setSwipeThreshold
```
 void setSwipeThreshold(float threshold)
```
    Configures the fraction that the user should move the View to be considered as swiped.
    Default value is {@code 0.5f}.
    
    Parameters:
    
    threshold - A float value that denotes the fraction of the View size.
  - setSwipeFlags
```
 void setSwipeFlags(int swipeFlags)
```
    Configures the directions in which the item can be swiped.
    Default values are LEFT, RIGHT for VERTICAL LinearLayout.
    NOTE: Swipe is not supported in case of GridLayout and StaggeredGridLayout.
    
    Parameters:
    
    swipeFlags - flags directions, a combination of:LEFT, RIGHT,UP, DOWN
  - getSwipeThreshold
```
 float getSwipeThreshold(RecyclerView.ViewHolder viewHolder)
```
    Returns the fraction that the user should move the View to be considered as swiped.The fraction is calculated with respect to RecyclerView's bounds.
    Default value is 0.5f, which means, to swipe a View, user must move the View at leasthalf of RecyclerView's width or height, depending on the swipe direction.
    
    Parameters:
    
    viewHolder - The ViewHolder that is being dragged.
  - setDragAnimationDuration
```
 void setDragAnimationDuration(long animationDuration)
```
    Sets the animation duration of Drag event, starting when the items is released.
    Default value is {@code 400ms}.
    
    Parameters:
    
    animationDuration - duration in milliseconds
  - setSwipeAnimationDuration
```
 void setSwipeAnimationDuration(long animationDuration)
```
    Sets the animation duration of Swipe removal event, starting when the items is released.
    Default value is {@code 300ms}.
    
    Parameters:
    
    animationDuration - duration in milliseconds
  - getAnimationDuration
```
 long getAnimationDuration(RecyclerView recyclerView, int animationType, float animateDx, float animateDy)
```
    Provides the animation duration for Drag and Swipe previously set with setDragAnimationDuration and setSwipeAnimationDuration.
  - onMove
```
 boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target)
```
  - onSwiped
```
 void onSwiped(RecyclerView.ViewHolder viewHolder, int direction)
```
  - getMovementFlags
```
 int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)
```
  - onSelectedChanged
```
 void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState)
```
  - clearView
```
 void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)
```
  - onChildDraw
```
 void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive)
```

Class ItemTouchHelperCallback

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class androidx.recyclerview.widget.ItemTouchHelper.Callback

Methods inherited from class java.lang.Object

Constructor Detail

ItemTouchHelperCallback

Method Detail

setLongPressDragEnabled

setHandleDragEnabled

setSwipeEnabled

isLongPressDragEnabled

isHandleDragEnabled

canDropOver

setMoveThreshold

getMoveThreshold

isItemViewSwipeEnabled

setSwipeThreshold

setSwipeFlags

getSwipeThreshold

setDragAnimationDuration

setSwipeAnimationDuration

getAnimationDuration

onMove

onSwiped

getMovementFlags

onSelectedChanged

clearView

onChildDraw