title: How can I get source code of Android Library when using Android Studio?
body: <p>How can I get source code of Android Library  when using Android Studio?</p>
  
  <p>I have try this,but nothing happened.</p>
  
  <pre><code>apply plugin: 'idea'
  idea{
      module {
          downloadJavadoc = true
          downloadSources = true
      }
  }
  </code></pre>