title: How to import Maven dependency in Android Studio/IntelliJ?
body: <p>I've created a new Android project using the default wizard in Android Studio. Compiled, and deployed the app to my device. All is well.</p>
  
  <p>Now I want to import an external library that is available on Maven. (<a href="http://square.github.io/picasso/">http://square.github.io/picasso/</a>). I went to module properties, and added a Maven library. It shows up correctly in the list of dependencies. In addition, it shows up in the editor and I can correctly use it in code.</p>
  
  <p>However, at compile time, I get a Gradle error: 
  unable to find class</p>
  
  <p>Any ideas?</p>