ActionBar or ActionBarSherlock - Smoothly Hide / Show the ActionBar

I'm using ActionBarSherlock, and attempting to hide / show the ActionBar for fullscreen images, using: ``` getSupportActionBar.hide(); ``` and ``` getSupportActionBar.show(); ``` But it is really jumpy and awkward. Is there a way to make it smoother, or to apply a translation / opacity animation? Upon further inspection of ABS source, and through observing its behavior, it seems to have at least a minimal amount of animation defined. The same cannot be said for the standard ActionBar. Just for completeness, here is the relevant code I'm call from an ImageView.click: ``` if( shouldRender ) { . . . getSupportActionBar().hide(); getWindow().addFlags( WindowManager.LayoutParams.FLAG_FULLSCREEN ); } else { . . . getSupportActionBar().show(); getWindow().clearFlags( WindowManager.LayoutParams.FLAG_FULLSCREEN ); } ``` It's worth noting that the flags setting / clearing also causes a jump, but a much less noticeable one, so I was going to tackle it later, if at all. Edit: This (by the creator of ABS) seems to state that it's impossible on a native ActionBar. I suppose I could just edit the two XML files that define his animation, but that will not give me full platform penetration.