title: HelloWorld with JavaFXPorts and gradle on Android
body: <p>so I'll try to build a mobile application with Gluon and JavaFX.</p>
  
  <p>So, i follow this step.</p>
  
  <ol>
  <li>Install ADT and add ANDROID_HOME to my enviroment (OS Mac)</li>
  <li>Install SceneBuilder from official site</li>
  <li>Install last eclipse version (neon)</li>
  <li>generate a FXML file from ScendeBuilder</li>
  <li>With eclipse wizard, i generate a SingleViewGluon project</li>
  <li>import FXML on my eclipse project and use in my JavaFX application</li>
  </ol>
  
  <p>Now I try to generate apk from console, I'm in the root of project and launch</p>
  
  <pre><code>./gradlew clean build
  </code></pre>
  
  <p>and that's ok, after</p>
  
  <pre><code>./gradlew android
  </code></pre>
  
  <p>and i get that's error</p>
  
  <blockquote>
    <p>FAILURE: Build failed with an exception.</p>
    
    <ul>
    <li><p>What went wrong: Failed to capture snapshot of input files for task 'mergeClassesIntoJar' during up-to-date check.
    java.io.FileNotFoundException: /Users/franksisca/Library/Android/sdk/extras/android/support/multidex/library/libs/android-support-multidex.jar
    (No such file or directory)</p></li>
    <li><p>Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.</p></li>
    </ul>
    
    <p>BUILD FAILED</p>
  </blockquote>
  
  <p>How i solve this? Someone has a step-by-step tutorial to build a mobile application with JavaFXPorts?</p>
  
  <p>thanks in advance</p>