Android Studio and android.support.v4.app.Fragment: cannot resolve symbol
해결 방법
I have tried all of the following,
- Invalidate Caches/Restart
- Sync project with gradle files
- Clean project
- Rebuild project
- gradlew clean
But, none of them worked for me.
Finally, I solved it by deleting "{ProjectFolder}/.idea/libraries", and then synced with gradle and built again.
출처
https://stackoverflow.com/questions/20386331/android-studio-and-android-support-v4-app-fragment-cannot-resolve-symbol
