Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build an Interactive Story App (Retired) Intents and Multiple Activities Introducing String Resources

Cannot resolve symbol 'R'

There is an error stating " Cannot resolve symbol 'R' " for the line : setContentView(R.layout.activity_main);

( this is in my main activity and on my onCreate Method )

I tried to rebuild and clean the project and also re-launching android studio. But I still did not remove the error How do I fix this error ?

1 Answer

This error commonly occurs when one of your xml files has incomplete or conflicting data. Go through your string xml values first to see if there are any empty values, if not go through your layout files to see if there are any missing or conflicting values.