VideoView使用Fragment

Question

我正在使用Fragment，我想在其中播放视频。方法videoView.setOnCompletionListener(getActivity());存在问题。它表示VideoView类型中的方法setOnCompletionListener（MediaPlayer.OnCompletionListener）不适用于参数（FragmentActivity）。这是我的代码：

public class my_Fragment extends Fragment implements
    AdapterView.OnItemSelectedListener, OnCompletionListener   {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

      View v= inflater.inflate(R.layout.my_layout, container, false);

      VideoView videoView = (VideoView)v.findViewById(R.id.videoView1);
      MediaController mc = new MediaController(getActivity());
      //videoView.setMediaController(mc);
      videoView.setKeepScreenOn(true);
      videoView.setVideoPath("android.resource://com.my.package/raw/"+R.raw.myvideo);
      videoView.start();
      videoView.requestFocus();
      videoView.setOnCompletionListener(getActivity());

      mFlipper = ((ViewFlipper) v.findViewById(R.id.flipper));
      mFlipper.startFlipping();

      Spinner s = (Spinner) v.findViewById(R.id.spinner);
      ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
            android.R.layout.simple_spinner_item, mStrings);
      adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      s.setAdapter(adapter);
      s.setOnItemSelectedListener(this);

      return v;
  }