小编Paw*_*wel的帖子

I encountered a problem while using Android Studio. When I'm trying to run any app, I get the same error "Default activity not found", and in my code in line tools:context=".MainActivity", MainActivity is highlighted red and it says "Unresolved class MainActivity". It happens even if I create a brand new "empty activity".

So far I've tried:

• refreshing IDE cache
• checked package names in Android manifest and MainActivity
• selecting a default activity in-app configuration
• made sure that src is the …