How to create a full screen activity in Android

 
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.app.Activity;


public class FullscreenActivities extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  
                //removes the unwanted contents.....
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
  //......................

  setContentView(R.layout.activity_fullscreen_activities); 
 }