Why Do Packages From Library Module Does Not Exist Upon Compilation, Even When Android Studio Shows No Errors In Code?

I have a library module (AndEngine) inside my libs/AndEngine folder. The code from that compiles fine. In my root settings.gradle file I have this : include ':app:libs:AndEngine'

Solution 1:

Change this line.

compile project('libs:AndEngine')

in

compile project(':app:libs:AndEngine')

In any case it is not a good idea to put a library module inside the app module. I suggest you using this structure:

root
  settings.gradle
  app
    build.gradle
  libs
    AndEngine
      build.gradle

Then in your settings.gradle

include':libs:AndEngine'include':app'

And in your app/build.gradle

compile project(':libs:AndEngine')