Updating UI from a service (using a handler?)

Question

I am trying to update my UI in FirstActivity when I receive a notification but is confused by runOnUiThread , Runnable and Handl

Answer 1

I've always just had the service fire off a Broadcast and then in my Activity I have a BroadcastReciever listening for the Broadcast. It's an approach that is much simpler than the one you outlined above.