Gradle assemble of an Android project failed, can't find R.txt

Question

Sorry for my poor English. I\'m trying to migrate my project to Gradle with Android Studio, but currently the build fails during processDebugResources.

Answer 1

I had the same problem, beginning when I fumbled around adding a second sub-subfolder to my assets directory. Removing the folder (basically undoing what I did to cause the problem) didn't help, which indicated it may be a problem with caches. The accepted answer may work, if by changing the manifest file you trigger Android Studio to invalidate its caches (apparently this is more than clean and rebuild, as I tried that several times).

Simple thing to try: go to File->Invalidate Caches and Restart.