R.java was modified manually! Reverting to generated version

I have the emergency live tracker sample apk file. So I run t开发者_C百科hat application via eclipse.

I am getting an error.

Just clean your project and then rebuild it. That will automatically generate a new R file.

I had that problem and it turned out to be some weird side-effect of me not using the proper Java compiler: I used to use 1.5 for earlier SDK versions but I had to use Java 1.6.

Right Click on Project->Bulid Path->Configure Build Path ther you see error android-support-v4.jar remove this library and add library again this works fine for me.