Why: There's some programs that I love using, but since all programmers aren't graphic designers (and I happen to enjoy graphic design), I just want to change some of the .png files and reinstall the apk. The technical stuff: I put the edit .apk in the tools folder, run a cmd from there, and:\ Code (Text): adb push program.apk /data/app I then go to the file in Android Mate, and tap it, and try to install it. But when I try to install it, Android Mate says "Application did not install." So there must be an error with it. I figure it's something obvious, like a signing issue. Ideas?