572f1a3185
The current implementation of IdleableHandlerThread is based on the assumption that MessageQueue#isIdle will return true iff the message loop has finished processing its messages. Unfortunately, this is incorrect: isIdle returns true iff are no more messages waiting in the queue; thus, it will also return true while it is processing the last message before going idle. Instead of using idle handlers, take the simpler approach of posting a runnable to the message loop and waiting for it to be processed. Test: see other CLs in this patch series Bug: 31479480 Change-Id: Iae75781f067b762c8653a488a5e4d5ee0c789e01