Cannot find R.layout.activity_main

Question

I was trying to work out with multiple layout using some online tutorials. The thing is my program was building and compiling correctly as long as there was only one XML fil

Answer 1

After cleaning the project and syncing with gradle(no result), i removed all my import statement, and brought them back in using alt+Enter.

Answer 2

I had the same problem, fixed by replacing R with com.example.appname.R obviously put your package reference in there instead. Or just add this line to your file:

import com.your.package.R

Or even better, try removing this line from your code if exists:

import android.support.compat.R

Answer 3

or you can write

import.R.layout // at the top

It will work for sure

Answer 4

First Doing This --> Select Build > Clean Project from the Android Studio toolbar, wait a few moments, and then build your project by selecting Build > Rebuild Project.

if Problem Not solved then doing This --> File > Invalidate Caches / Restart > Invalidate and Restart from Android Studio’s toolbar.

Answer 5

JUST REMOVE the import.android.R;

Then the R.layout.(XML LAYOUTNAME) will turn to BLUE

IT TOOK ME HOURS TO FIND THIS ONE ERROR

Answer 6

Either your gradle or build need to know where resources are.