Android设置页面Activity全屏（隐藏导航栏、状态栏）

3、代码中设置：在setContentView 之前调用

requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

注意：

当有全面屏手机可以显示虚拟按键时，比如小米8手机，就会出现白色的虚拟按键区域，如图所示：

按照google的官方办法，设置如下几个Flag就可以隐藏导航栏：

View decorView = getWindow().getDecorView();

// Hide both the navigation bar and the status bar.

// SYSTEM_UI_FLAG_FULLSCREEN is only available on Android 4.1 and higher, but as

// a general rule, you should design your app to hide the status bar whenever you

// hide the navigation bar.

int uiOptions = View.SYSTEM_UI