设置Activity为全屏显示的两种方法

 方法1：AndroidManifest.xml 里，Activity的 android:theme  指定为"  @android :style/Theme.NoTitleBar.Fullscreen" 
示例:   

        android:icon="@drawable/ic_launcher" 
        android:label="@string/app_name" 
        android:theme="  @android  :style/Theme.NoTitleBar.Fullscreen"> 
       
            android:name=".MainActivity"> 
             
                 

                 
             
         
     

方法2： 在onCreate()里指定No title 
要加入： 
  
      /*set it to be no title*/ 
      requestWindowFeature(Window.FEATURE_NO_TITLE); 
       /*set it to be full screen*/ 
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,    
        WindowManager.LayoutParams.FLAG_FULLSCREEN); 


示例： 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        /*set it to be no title*/ 
        requestWindowFeature(Window.FEATURE_NO_TITLE);   
         
        /*set it to be full screen*/ 
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,    
        WindowManager.LayoutParams.FLAG_FULLSCREEN); 
                         
        setContentView(R.layout.activity_main);