onCreateOptionsMenu not being called on FragmentActivity when run on phone version

I create an app that supports both phone and tablet version so i use t开发者_运维知识库he android-support-v4.jar library. My activity extends the FragmentActivity and override the onCreateOptionsMenu(Menu menu). This works fine on tablet, the onCreateOptionsMenu being called correctly but it doesn't work on phone, onCreateOptionsMenu never get called. How to resolve this?

Note: i use <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="12"/> on Manifest file.

You should consider from your Fragment code:

1) Implementing onCreateOptionsMenu(Menu menu, MenuInflater inflater)

2) Calling setHasOptionsMenu

3) And also implementing onOptionsItemSelected(MenuItem item)

Then you will be ok on both the phone and tablet.