SharedElementCallback

public abstract class SharedElementCallback
extends Object

java.lang.Object
   ↳ androidx.core.app.SharedElementCallback


Listener provided in Activity.setEnterSharedElementCallback(SharedElementCallback) and Activity.setExitSharedElementCallback(SharedElementCallback) to monitor the Activity transitions. The events can be used to customize Activity Transition behavior.

Summary

Nested classes

interface SharedElementCallback.OnSharedElementsReadyListener

Listener to be called after SharedElementCallback.onSharedElementsArrived(List, List, OnSharedElementsReadyListener) when the shared elements are ready to be hidden in the source Activity and shown in the destination Activity. 

Public constructors

SharedElementCallback()

Public methods

Parcelable onCaptureSharedElementSnapshot(View sharedElement, Matrix viewToGlobalMatrix, RectF screenBounds)

Creates a snapshot of a shared element to be used by the remote Activity and reconstituted with onCreateSnapshotView(android.content.Context, android.os.Parcelable).

View onCreateSnapshotView(Context context, Parcelable snapshot)

Reconstitutes a snapshot View from a Parcelable returned in onCaptureSharedElementSnapshot(android.view.View, android.graphics.Matrix, android.graphics.RectF) to be used in onSharedElementStart(java.util.List, java.util.List, java.util.List) and onSharedElementEnd(java.util.List, java.util.List, java.util.List).

void onMapSharedElements(List<String> names, Map<String, View> sharedElements)

Lets the SharedElementCallback adjust the mapping of shared element names to Views.

void onRejectSharedElements(List<View> rejectedSharedElements)

Called after onMapSharedElements(java.util.List, java.util.Map) when transferring shared elements in.

void onSharedElementEnd(List<String> sharedElementNames, List<View> sharedElements, List<View> sharedElementSnapshots)

In Activity Transitions, onSharedElementEnd is called immediately before capturin