Instead of sleeping in the onclick, you could post a delayed message to a handler (with associated runnable) and have it update the UI. Obviously fit this into the design of your app and make it work, but the basic idea is this:
//Here's a runnable/handler combo
private Runnable mMyRunnable = new Runnable()
{
@Override
public void run()
{
//Change state here
}
};
Then from onClick you post a delayed message to a handler, specifying that runnable to be executed.
Handler myHandler = new Handler();
myHandler.postDelayed(mMyRunnable, 1000);//Message will be delivered in 1 second.
Depending on how complicated your game is, this might not be exactly what you want, but it should give you a start.