Android 去標題 (where is my title bar?)

you can see no title bar
這個沒什麼好解釋的
只需要一個statement
title就不見了

      @Override  
      protected void onCreate(Bundle savedInstanceState) {  
           super.onCreate(savedInstanceState);  
           requestWindowFeature(Window.FEATURE_NO_TITLE);             
           setContentView(R.layout.main);  
     }