RequestFeature() must be called before adding content

异常Log ，如下：

Paste_Image.png

方法一：

将 ActionBarActivity和AppCompatActivity 替换为 Activity ， onCreate中代码如下：

@Override 
protected 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);
}

方法二：

在 ActionBarActivity和AppCompatActivity中，onCreate代码如下：

@Override 
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState); 
 supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
 setContentView(R.layout.activity_main);
}

NOTE: 关键就是 将 requestWindowFeature 替换为 supportRequestWindowFeature