Android : 9-Patch image Error

Question

i imported this keyboard app from git everything is working fine but i am getting this error while building project

Error:top-left corner pixel must be either op         


        

Answer 1

This error is caused by an incorrect/corrupted 9-patch file. They should have a transparent or opaque white border, but yours doesn't seem to have it. Try following the steps in this: https://developer.android.com/studio/write/draw9patch.html