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方法一:在 setContentView 之前设置如下代码
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
方法二:在AndroidManifest.xml 的application节点或者是activity节点中添加如下代码
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
application中如下:(针对与整个App的所有界面,全部全屏显示)
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
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>
activity中如下:(只针对于当前的这个activity是全屏显示)
<activity android:name=".MainActivity"
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>