Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Android Android Lists and Adapters (2015) Using Parcelable Data Parceling Data

Jarvis Chandler
Jarvis Chandler
7,619 Points

hit clean build And R is marked red

hit clean build And R is marked red

1 Answer

Ben Deitch
STAFF
Ben Deitch
Treehouse Teacher

Not sure why that's happening but usually when I hit something like that I try the following. One of these usually does the trick:

  1. Clean project (looks like you've done this one :))
  2. Rebuild project
  3. File -> Invalidate Caches / Restart
  4. If none of those work, try deleting the 'build' folder. It will get rebuilt the next time you build your project and that should hopefully fix the issue.
Jarvis Chandler
Jarvis Chandler
7,619 Points

Thanks Ben, I solved my problem thanks to your helpful tips. Keep up the good work and thanks for your support it has been much appreciated.