title: Convert existing project to library project in Android Studio
body: <p>How can I convert an existing Android project into an Android library project in Android Studio? <a href="https://stackoverflow.com/questions/2959820/convert-existing-project-into-android-project-in-eclipse">In Eclipse, that is possible.</a></p>
  
  <p>Actually, I want to convert an old Android project into an Android library project so that I can use existing code of that Android project to build a new Android project with minor changes in Android Studio.</p>