title: Implementation TTS with providing default language
body: <p>I am developing few Android apps, and I would like to provide possibility (assuming that phone supports) to 'read' the text - in Spanish app it would be Spanish voice, in French - French, respectively.</p>
  
  <p>Can I somehow made one of two things:</p>
  
  <ol>
  <li>Check if this particular language is available?</li>
  <li>If it is not available - download it or give user possibility to download it?</li>
  </ol>
  
  <p>Are there any patterns for it?</p>