package R does not exist…or does it?

Question

These errors are displayed in random order:

error: package com.*.* does not exist

error: package R does not exist

These errors will not always be displayed, but will occasionally be displayed and should be to run again to be fixed.

Answer 1

• option 1: You just clean and rebuild project
• option 2: File -> invalidate catches and restart

If those things does not work, just check your log errors carefully, You did a simple mistake in your layout designs or java classes or somewhere else.