title: Why is the source code 'all red' in Android Studio
body: <p>I'm always using Android Studio's debugger to walk through the code and see how things work.</p>
  
  <p>As I dive deeper into the SDK, I get to lisView.java for example, and now it's class members are mostly red? (see link)</p>
  
  <p>Why is that?? I could see my code and parts of the SDK prior to 'stepping in' listView.java?  Why suddenly is it all red on the right-had column?</p>
  
  <p>As you see in the screenshot, now I can't see the value for
  the member variable, mOldItemCount for example.
  <a href="https://i.stack.imgur.com/ng0a9.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/ng0a9.jpg" alt="screen shot of listView.java"></a></p>