Hi hblockx and welcome to the Android Forums,
Well if you are waiting for getting the input or so, you have paused the main thread, since I guess your game includes the single thread, hence the GUI is not getting repainting.
The recommended solution would be, start the individual thread for taking the input and let the main thread worked for the GUI and rest of the game updations.
Correct me If I have understand your issues incorrectly,
Thanks with Regards,
Raj - The Kernel