Impossibile trasmettere da ActionProvider a ShareActionProvider

Question

Sto tentando di implementare un ShareActionProvider nel mio ActionBarSherlock.

Il seguente codice mi dà questo errore:

non può lanciare da ActionProvider a ShareActionProvider

ReadingActivity.java

@Override 
    public boolean onCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) { 
     MenuInflater inflater = getSupportMenuInflater(); 
     inflater.inflate(R.menu.menu2b, (Menu) menu); 
      menu.getItem(0).setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS|MenuItem.SHOW_AS_ACTION_WITH_TEXT); 
     menu.getItem(1).setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS|MenuItem.SHOW_AS_ACTION_WITH_TEXT); 

     MenuItem menuItem = menu.findItem(R.id.share); 
      // Get the provider and hold onto it to set/change the share intent. 
     ShareActionProvider shareActionProvider = (ShareActionProvider) menuItem.getActionProvider(); 

     // Set the default share intent 
     shareActionProvider.setShareIntent(getDefaultShareIntent()); 
     return super.onCreateOptionsMenu(menu); 
    } 

menu2b.xml

<?xml version="1.0" encoding="utf-8"?> 
<menu xmlns:android="http://schemas.android.com/apk/res/android"> 
    ... 
    <item android:id="@+id/share" 
      android:title="Share" 
      android:icon="@drawable/ic_share_action_bar" 
      android:actionProviderClass="android.widget.ShareActionProvider"/> 
</menu> 

Answer 1

Si dovrebbe usare il ShareActionProvider da ABS, non quello di scorta.

android:actionProviderClass="com.actionbarsherlock.widget.ShareActionProvider"