Android Studio: ClassNotFoundException

Question

i was busy with my app for over a week, when suddenly:

11-12 07:59:17.860    1653-1653/nl.test.myapp E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.Runtim         


        

Answer 1

Your MainActivity.java is excluded from compile, so this class isn't included in .apk. Remove line:

from the excludeFromCompile section of the .idea/compiler.xml file (or you can do this from IDE settings).

Source