Android的全屏幕活动错误

Question

我想创建一个全屏幕的活动：

public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 

     setContentView(R.layout.activity_main); 
    } 

我收到以下错误：

requestFeature() must be called before adding content 

Answer 1

把requestWindowFeature以前super.onCreate

public void onCreate(Bundle savedInstanceState) { 
requestWindowFeature(Window.FEATURE_NO_TITLE); 
     super.onCreate(savedInstanceState); 
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); 
setContentView(R.layout.activity_main); 
    }