Android INSTALL_FAILED_UID_CHANGED

Question

I have been doing debugging on Android using my Nexus 4, however I recently encountered this error here. After doing some research on this error, it seems to be an issue wit

Answer 1

I deleted /data/data/my.package.name and /data/app/my.package.name.apk, problem still persistent.

however I found a folder /data/user/0/my.package.name, delete it and problem solved.