Android app working on emulator but not on real device

Question

Just wrote this simple app for testing: one button that displays date and hour, and another button that selects a random color and shows it. It works fine on Emulator but th

Answer 1

if Instant Run is activated this causes some classes to be moved. To disable Instant Run Go to File -> Settings -> Build,Execution,Deployment ->Instant Run -> uncheck "Enable instant run"