activity onCreate 方法中,
setContentView(R.layout.activity_burn);
setContentView之后,添加如下代码:
Window window = getWindow();
window.getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN // 隐藏状态栏
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION // 隐藏导航栏
| View.SYSTEM_UI_FLAG_FULLSCREEN // 全屏显示
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // 隐藏导航栏
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
);