title: Get available locales for text to speech (TTS)
body: <p>I'm working on a text-to-speech implementation of a flashcard program. Text in different languages should be read out. In order to do this properly the user has to select the language of the text to read (will be stored and used later without question).</p>
  
  <p>Is there a possibility of getting the available TTS languages on an Android system? If not, is there a possibility of getting all availably locales on the system?</p>
  
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  <p>I guess, I got it: <code>getAvailableLocales()</code> and <code>tts.isLocaleAvailable(locale)</code></p>