Android中界面实现全屏显示的两种方式

Android中界面实现全屏显示的两种方式 

1. 在Java代码中设置

super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE); //无title
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN); //全屏
setContentView(R.layout.main);

		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);	//无title
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);	//全屏
		setContentView(R.layout.main);

在这里需要注意的是这两段Java代码必须放在setContentView( ); 之前，不然会报错，错误显示如下。

 01-14 05:25:41.429: E/AndroidRuntime(7405): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content

2. 在Manifest文件中修改

在默认启动的Activity里添加 android:theme="@android:style/Theme.NoTitleBar.Fullscreen" 即可

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