Apps How to center align Fragments

[krishnan]

Hi

Please see the codelet that we are using to center align the player.
I would appreciate any kind of pointers to fix the issue.

Layout Structure:-
1) I have a list view to display a movie title/name
2) I have a fragment to display the movie

Iam are trying to center align the fragment by setting its gravity.

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Layout files

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/root"
    android:orientation="horizontal" android:layout_width="fill_parent"
    android:layout_height="match_parent">
   
    <LinearLayout android:id="@+id/listLayout" android:layout_width="140dip" android:layout_height="match_parent">
    <ListView
            android:id="@+id/movies_list"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
     </LinearLayout>      
   
         
    <LinearLayout android:id="@+id/fragmentLayout"
    android:orientation="horizontal" android:layout_width="wrap_content"
    android:layout_height="match_parent" android:gravity="center">
    <fragment class="com.application.PlayerFragment"
        android:id="@+id/titles" android:layout_width="wrap_content"
        android:layout_height="match_parent" android:layout_gravity="center_vertical|center_horizontal"/>
        </LinearLayout>
           
</LinearLayout>

public class PlayerFragment extends Fragment implements SurfaceHolder.Callback {

static SurfaceView surfaceView;
SurfaceHolder mSurfaceHolder01;

onCreate()
{
              surfaceView = new SurfaceView(getActivity().getApplicationContext());
        mSurfaceHolder01 = surfaceView.getHolder();
        mSurfaceHolder01.addCallback(this);
        mSurfaceHolder01.setType(SurfaceHolder.SURFACE_TYPE_NORMAL);
}
#######################################################################
## Here is surface change callback I am trying to center align the fragment when
#######################################################################
public void surfaceChanged(SurfaceHolder surfaceholder, int format, int w, int h) {

                /////////////////////////////////////
               // Not working/ No change on Fragment
                 LinearLayout fragmentLayout = (LinearLayout)getActivity().findViewById(R.id.fragmentLayout);

        //LinearLayout linearLayout = (LinearLayout)getActivity().findViewById(R.id.fragmentLayout);
        //((LinearLayout.LayoutParams)linearLayout.getLayoutParams()).gravity = Gravity.RIGHT;

                 ////////////////////////////////////////
                 // It working on the list view/    
                 //LinearLayout linearLayoutMovie = (LinearLayout)getActivity().findViewById(R.id.listLayout);
                 //linearLayoutMovie.setVisibility(View.GONE);

}