Android Studio cannot resolve R in imported project?

Question

I\'m trying the new Android Studio. I\'ve exported a project from eclipse, using the build gradle option. I\'ve then imported it in Android Studio. The R.java file under gen

Answer 1

1. Press F4 into Project Structure, Check SDKs on left
2. Click Modules ---> Source Tab, check gen and src as sources

PS: The answer over a year old and the menus have changed.