How to make full screen in Android 4.0

Question

Android 4.0 phones only have virtual buttons, which actually go invisible when playing youtube/video at fullscreen (the video portion takes over where the buttons are).

I want to do this, but haven't found a way.

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

or

requestWindowFeature(Window.FEATURE_NO_TITLE); 
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

do not cover the virtual buttons.

Here is an example that shows the type of full screen I'm talking about:

http://www.youtube.com/watch?v=Lw_O1JpmPns

Answer 1

Okay, I added this SYSTEM_UI_FLAG_HIDE_NAVIGATION flag to my video activity and that hid the virtual buttons.

WebView view = new WebView(this);
view.setSystemUiVisibility(WebView.SYSTEM_UI_FLAG_HIDE_NAVIGATION);

Another choice is to use the SYSTEM_UI_FLAG_LOW_PROFILE flag. This doesn't hide the buttons though. Instead it makes the buttons go to "Low Profile" mode (basically turns them into little dots)