belongs to Maven artifact com.android.support:appcompat-v7:28.0.0-alpha1
Known Indirect Subclasses
View implements this interface it will receive callbacks when expanded or
collapsed as an action view alongside the optional, app-specified callbacks to
MenuItemCompat for more information about action views.
ActionBar for more information about the action bar.
Called when this view is collapsed as an action view.
Called when this view is expanded as an action view.
void onActionViewCollapsed ()
Called when this view is collapsed as an action view. See
void onActionViewExpanded ()
Called when this view is expanded as an action view. See