title: Android project with multiple packages import R. file
body: <p>Background: Big project with multiple packages. Resources need to be shared among packages</p>
  
  <p>I saw another developer importing the <code>R</code> file of classes in other packages and that compiles. However, I'm not sure of <code>R</code> being imported. Through my experience if I import <code>R</code> by accident, I'll only see compile errors. </p>
  
  <p>Can any one seeing the dilemma here help? Thank you!</p>