why does R does not exist error come in android?

Question

packages/apps/Myfolder/src/com/android/myfolder/MyFile.java:196: package R does not exist
                  addPreferencesFromResource(R.xml.myfile);
                        


        

Answer 1

1. Try Clean-> Build (If not just restart eclipse, it just worked!)
2. In case you are importing project, make sure you choose proper Level.