Question

I have a Handler from my sub-Activity that was called by the main Activity. This Handler is used by sub-classes to postDelay some Runnables, and I can’t manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish(), but it still call again and again). Is there anyway to remove all callbacks from a Handler?

Answer 1

In my experience calling this worked great!

handler.removeCallbacksAndMessages(null);

In the docs for removeCallbacksAndMessages it says…

Remove any pending posts of callbacks and sent messages whose obj is token. If token is null, all callbacks and messages will be removed.