Under failure conditions of the GC Adapter, When interface count is zero and we can't open the device.
Then there were race conditions on shutdown of the threads which could result in crashing.
Make adapter opening more robust like the Mayflash DolphinBar.
Make shutdown more robust by making the read thread control the write thread.
Make sure that there is actual data to be written when kicking the write thread. So it doesn't attempt a write a shutdown.
Make a toast on screen to tell the user that the adapter needs to be unplugged and plugged back in again for it to work.
This is the only way to get Wiimotes working under Android now.
This, just like the Wii U Gamecube Controller Adapter, completely goes around Android's limitations and talks with the device directly through USBManager.
Couple notes.
Continuous scanning must be enabled otherwise the Wiimotes won't be seen.
The UI doesn't expose support for this yet. One must change the Wiimote source and continuous scanning settings manually.
Testing up to two wiimotes in Taiko No Tatsujin, no reason to believe all four won't work.