2中方法

在AndroidManifest.xml中

<activity android:name=””

…

android:theme=”@android:style/Theme.NoTitleBar.Fullscreen”/>

程序里

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
…