title: image_picker plugin causes build error for Android
body: <p>I installed the image_picker plugin into my project, and it works with iOS, But now the Android build crashes with the error:</p>
  
  <pre><code>FAILURE: Build failed with an exception.
  * What went wrong:
  Execution failed for task ':app:transformClassesWithMultidexlistForDebug'.
  &gt; com.android.build.api.transform.TransformException: Error while generating the main dex list.
  </code></pre>
  
  <p>Any idea why the Android build crashes when using this plugin?</p>