activity全屏实现沉浸式效果,并且单独触摸不会弹出虚拟按键的方法

mLCDChangeLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION|
 View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

@Override
 public void onWindowFocusChanged(boolean hasFocus) {
  super.onWindowFocusChanged(hasFocus);
  if( hasFocus ) {
   hideNavigationBar();
  }
 }
 private void hideNavigationBar() {
  // TODO Auto-generated method stub
  final View decorView = getWindow().getDecorView();
  final int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
    | View.SYSTEM_UI_FLAG_FULLSCREEN
    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
  decorView.setSystemUiVisibility(flags);
  decorView.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
   @Override
   public void onSystemUiVisibilityChange(int visibility) {
    if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
     decorView.setSystemUiVisibility(flags);
    }
   }
  });
 }