How to set delay in Android onClick function

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 comboprivate 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.

Correctly work:

final Handler handler = new Handler();handler.postDelayed(new Runnable() {  @Override  public void run() {    //Do something after 100ms  }}, 100);

You never should sleep in UI thread (by default all your code runs in UI thread) - it will only make UI freeze, not let something change or finish. I can't suggest more because I don't understand code logic.