unfortunately has stopped error on real devic issue : I make an app. it works correctly on emulator. but it go to 'unfortunately has stopped' on real device , specially when i want to go from an activity to another one. and I'm searching for an app or sonthing to save logs or anythig can help me to find the solution to resolve my issue. can anyone help me or introduce an app to me, or share your experience about the same problems. 