Android : Hide Title Bar and Making full screen

Hide Title Bar and Making full screen

CODE HERE :

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
     
    requestWindowFeature(Window.FEATURE_NO_TITLE);  

    //code that displays the content in full screen mode  

    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
     
    setContentView(R.layout.activity_main); 
   
}