MEDIA CONTROLLER(playing video)

import android.app.Activity;
import android.os.Bundle;
import android.widget.MediaController;
import android.widget.VideoView;

public class MediacontrollerActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        VideoView vv = (VideoView)findViewById(R.id.videoView1);
        MediaController mc = new MediaController(this);
        mc.setAnchorView(vv);
// is used for video view.
        vv.setMediaController(mc);
        vv.setVideoPath("/sdcard/vi.3gp");
// placed a 3gp format file in sd card .. for this click on File Explorer n place a video in mnt folder..
        vv.requestFocus();
       
    }
   
}


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />


    <VideoView
        android:id="@+id/videoView1"
        android:layout_width="match_parent"
        android:layout_height="347dp" />

</LinearLayout>