no changes to deploy android studio 2.1
Upgrade Android studio version to 3 or more. this bug is resolved. This was a bug on version 2.0 instant run and issues were reported check these links https://code.google.com/p/android/issues/detail?id=199884 https://code.google.com/p/android/issues/detail?id=195062 https://code.google.com/p/android/issues/detail?id=206698 https://code.google.com/p/android/issues/detail?id=209413 https://code.google.com/p/android/issues/detail?id=206627 thing to do would be to disable Instant Run entirely by Settings > Build, Execution, Deployment > Instant Run > Enable Instant … Read more