ActionBar Question
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1.android:actionViewClass="android.widget.SearchView",
SearchView
SearchView extends LinearLayout implements CollapsibleActionView
and,
CollapsibleActionView is a interface I think, and has two abstract method: onActoinViewCollapsed() and onActionViewExpanded().
CollapsibleActionView's description:
When a View implements this interface it will receive callbacks when expended or collapsed as an action view alongside the optional, app-specified callbacks to MenuItem.onActionExpendListener.
That is,
android:actionViewClass only allows one widget class to use.
2.andorid:actionProviderClass="andorid.widget.ShareActionProvider"
ShareActionProvider
ShareActionProvider extends ActionProvider
and,
ActionView has two direct subclasses: MediaRouteActionProvider and ShareActionProvider.
That is,
android:actionViewClass only has one common widget class to use.
Unless, Customize View extends or implements corresponding class.
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