title: The External Libraries missed when Importing a new project into AndroidStudio
body: <p>There is no enough reputation for me to post a image so I have to describe it by words...</p>
  
  <p>Open the Android Studio and change View from Android to Project there will be 2 child-folders, one is named by your project-name, the other is External Libraries.</p>
  
  <p>There should be SDK and JDK or some support-libraries in it but now nothing!
  The problem occured only when I tried to import an exsiting project.</p>
  
  <p>So how to fix it?</p>