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:   
<application 
       
android:icon="@drawable/ic_launcher" 
       
android:label="@string/app_name" 
       
android:theme=" @android :style/Theme.NoTitleBar.Fullscreen"> 
       
<activity 
           
android:name=".MainActivity"> 
           
<intent-filter> 
               
<action android:name="android.intent.action.MAIN" /> 

               
<category android:name="android.intent.category.LAUNCHER" /> 
           
</intent-filter> 
       
</activity> 
    </application> 

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(savedInstanceStat
b128
e); 
       
/*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);