cannot resolve R into variable after Android studio update

Question

I have just updated my android studio and now all my resources are errors!

• I have debugged and debugged but no avail.
• All my xmls files are okay,
• all strings start with lower case.
• I have also restarted the program

Answer 1

This is a known bug in the newest version of android studio 0.1.6. Google has suggested a temporary workaround until they can track down the problem and fix in next release. turn off external builds in preferences > compiler.