[Android]设置Activity为全屏显示的两种方法

1. 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>

2. 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);