As I got a Nexus 7 Android tablet[1], I also acquired a bluetooth keyboard (the Logitech K810[2], which seems great so far).
But, as I have a Swiss-German laptop, got a UK Android tablet, have a Swiss smartphone, and a French keyboard, some keyboard set input problems appears.
In case you are in the same situation, and, for example, have a QWERTY keyboard but want to write in AZERTY, or in Cyrillic, you can easily change the keyboard set in Android.