added in version 24.1.0
belongs to Maven artifact com.android.support:recyclerview-v7:28.0.0-alpha1

ItemTouchUIUtil

This package is part of the Android support library which is no longer maintained. The support library has been superseded by AndroidX which is part of Jetpack. We recommend using the AndroidX libraries in all new projects. You should also consider migrating existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library class mappings.

public interface ItemTouchUIUtil

android.support.v7.widget.helper.ItemTouchUIUtil

---

Utility class for ItemTouchHelper which handles item transformations for different API versions.

This class has methods that map to ItemTouchHelper.Callback's drawing methods. Default implementations in ItemTouchHelper.Callback call these methods with itemView and ItemTouchUIUtil makes necessary changes on the View depending on the API level. You can access the instance of ItemTouchUIUtil via getDefaultUIUtil() and call its methods with the children of ViewHolder that you want to apply default effects.

See also:

• getDefaultUIUtil()

Summary

Public methods
abstract void	clearView(View view) The default implementation for clearView(RecyclerView, RecyclerView.ViewHolder)
abstract void	onDraw(Canvas c, RecyclerView recyclerView, View view, float dX, float dY, int actionState, boolean isCurrentlyActive) The default implementation for onChildDraw(Canvas, RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)
abstract void	onDrawOver(Canvas c, RecyclerView recyclerView, View view, float dX, float dY, int actionState, boolean isCurrentlyActive) The default implementation for onChildDrawOver(Canvas, RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)
abstract void	onSelected(View view) The default implementation for onSelectedChanged(RecyclerView.ViewHolder, int)

Public methods

clearView

added in version 24.1.0

void clearView (View view)

The default implementation for clearView(RecyclerView, RecyclerView.ViewHolder)

Parameters
view	View

onDraw

added in version 24.1.0

void onDraw (Canvas c, 
                RecyclerView recyclerView, 
                View view, 
                float dX, 
                float dY, 
                int actionState, 
                boolean isCurrentlyActive)

The default implementation for onChildDraw(Canvas, RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)

Parameters
c	Canvas
recyclerView	RecyclerView
view	View
dX	float
dY	float
actionState	int
isCurrentlyActive	boolean

onDrawOver

added in version 24.1.0

void onDrawOver (Canvas c, 
                RecyclerView recyclerView, 
                View view, 
                float dX, 
                float dY, 
                int actionState, 
                boolean isCurrentlyActive)

The default implementation for onChildDrawOver(Canvas, RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)

Parameters
c	Canvas
recyclerView	RecyclerView
view	View
dX	float
dY	float
actionState	int
isCurrentlyActive	boolean

onSelected

added in version 24.1.0

void onSelected (View view)

The default implementation for onSelectedChanged(RecyclerView.ViewHolder, int)

Parameters
view	View

• Interfaces

  • ItemTouchHelper.ViewDropHandler
  • ItemTouchUIUtil

• Classes

  • ItemTouchHelper
  • ItemTouchHelper.Callback
  • ItemTouchHelper.SimpleCallback