ViewTreeSavedStateRegistryOwner

public static final SavedStateRegistryOwner get(@NonNull View receiver)

Retrieve the SavedStateRegistryOwner responsible for managing the saved state for this View. This may be used to save or restore the state associated with the view.

The returned SavedStateRegistryOwner is managing all the Views within the Fragment or Activity this View is added to.

public static final void set(@NonNull View receiver, SavedStateRegistryOwner owner)

Set the SavedStateRegistryOwner responsible for managing the saved state for this View Calls to get from this view or descendants will return owner.

This is is automatically set for you in the common cases of using fragments or ComponentActivity.

This should only be called by constructs such as activities or fragments that manage a view tree and their saved state through a SavedStateRegistryOwner. Callers should only set a SavedStateRegistryOwner that will be stable. The associated SavedStateRegistry should be cleared if the view tree is removed and is not guaranteed to later become reattached to a window.