Android Bluetooth Rock Paper Scissors

I have created a tic tac toe app (mentioned in a question here). Now I use a rock paper scissors part in this. Right now how I have done it is have 3 buttons corresponding to rock,

Solution 1:

You want to learn about wait/notify. You can have the first-to-send side sleep until it hears an answer from the other one. You'll want to make sure that your logic that decides whether to sleep is synchronized (with synchronized, volatile, or with an atomic variable) with the logic processing incoming events.