protectedvoidhideBottomUIMenu(){
//隐藏虚拟按键，并且全屏
if(Build.VERSION.SDK_INT >11&& Build.VERSION.SDK_INT <19) {// lower api
View v =this.getWindow().getDecorView();
v.setSystemUiVisibility(View.GONE);
}elseif(Build.VERSION.SDK_INT >=19) {
//for new api versions.
View decorView = getWindow().getDecorView();
intuiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
}
}