title: Sencha Touch - email button
body: <p>I need a mail button in my Android application, that opens a standard email form with filled To, Subject (can be edited) and Message fields. It's kind of a refer-a-friend email. How to make it?
  All I've found is:</p>
  
  <pre><code>listeners: {
      tap: {
          fn: function() {
              console.log('button tapped');
              window.open('mailto:webmaster@example.com');
          },
          element: 'element'
      }
  },
  </code></pre>
  
  <p>Unfortunately, I don't know how to implement html text and subject in it.</p>
  
  <p>So, what's the solution?</p>
  
  <p>Thank you.</p>