Android：Actionbar中的按钮未显示

Question

I am extending the ActionBarActivity and use fragments in this activity. But the actionbar does not show any button.

Here is my code (inside the fragment):

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        // TODO Auto-generated method stub
        inflater.inflate(R.menu.menu_for_edit_fragments, menu);

        super.onCreateOptionsMenu(menu, inflater);
    }

And here is the menu_for_edit_fragments.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" >
    <item android:id="@+id/item_done"
        android:title="@string/done"
        app:showAsAction="always"></item>
</menu>

What is wrong here?

Answer 1

Try to call setHasOptionsMenu(true) in onCreate() method of the Fragment .

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setHasOptionsMenu(true);
}

Answer 2

Did you call setHasOptionsMenu(true) during your fragment onCreate() ? If you are not, your fragment will not call the onCreateOptionsMenu() method.

Hope it helps.