“Default Activity Not Found” on Android Studio upgrade

Question

I upgraded IntelliJ Idea from 12.0.4 to 12.10.

Now all the modules in my Android project give the error:

Error: Default Activity Not Found

Answer 1

I found this blog that really fixed this issue in my case. It turns out you have to add some sort of intent:

It was definitely straightforward. Reference:

https://www.aboutonline.info/2018/08/error-running-app-default-activity-not-found-on-android-with-kotlin.html