In this tutorial I will show you how to build an Android app game from Unity. Many people face an error when exporting Android .apk file from Unity and me too. In this video I will show you how did I solve it.
That error message says:
Failed to re-package resources.
In my case, the problem was from SDK Build Tools version 24.0.0. What I did is just simply removing it from SDK then tried it again and done. APK was built using Build Tools v23.