R class missing after creating android project from existing source

Question

I downloaded the source for SpriteMethodTest, and I want to build it in Eclipse. So I Went:

File >> New >> Android Project >> Create Project From Existing Source >> SpriteMethodTest

It created the project alright, but the R class is not generated. Any file that references a resource in R says R cannot be resolved.

Importing android.R just results in R.drawable.background cannot be resolved. How do I generate R again?

Answer 1

Project -> Clean (select your project) -> Ok

This will trigger a re-build and so long as the project is configured as an Android project, R.java will be regenerated.

Answer 2

Try the following:

• Delete the gen folder
• Project => clean
• Right click => Android Tools => Fix project properties
• Right click => Run as... => Android application