title: Install the Android build tools version 19.1.0
body: <p>I run ionic run android and it starts to download lots of things except <code>gradle</code> that i downloaded it and set the path myself, now i have 2 question:</p>
  
  <p><strong>1:</strong> Should ionic framework always download lots of things with every new project?</p>
  
  <p>and</p>
  
  <p><strong>2:</strong> How i resolve the below error , i set <code>ANDROID_PATH</code> variable to point Android-SDK where packages exist</p>
  
  <p><strong>What went wrong:</strong></p>
  
  <p>A problem occurred evaluating root project 'android':</p>
  
  <pre><code> No installed build tools found. Install the Android build tools version 19.1.0
   or higher.
  </code></pre>