Issues with Nexus 5

[wizche]

I think the Android implementation is missing something on the turnOff() code. With Nexus 5 the turnOff wasn't working and the flash stayed on.

To fix this I've added camera.StopPreview(); at the end of the turnOff() function.

Thanks for the great work!

[srmoss]

Additionally, the fix you have on Line 68 of the LampImplementation does not work on the second call for 6.x devices. The fix for this is to move it to before the camera.StartPreview() at the end of turnOn() AND add the camera.StopPreview() at the end of turnOff().

[srmoss]

FYI, more info about why this fix works:
Android Documentation