Well, I have been working on this all day and I can't get it right. I have managed to make the BlueTooth connection persists through the temporary invocation of another activity, so that when I return to the first activity the BlueTooth thread is still running, the streams are still streaming, and the socket is still connected. But when I hit the home button and go to the Android desktop and then resume my app, the BlueTooth connection that needs to happen is stuck in a retry loop where the BluetoothSocket.connect always throws and exception: "Device or resource busy".
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