title: Having a language select option in an app using Swift
body: <p>I have Googled this for hours but could find no advice for the following problem (using Swift).</p>
  <p>I have seen in many apps an option to select the language from inside the app like this:</p>
  <p><a href="https://i.stack.imgur.com/7WUOG.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7WUOG.jpg" alt="Choose your language screen" /></a><br />
  <sub>(source: <a href="http://forum.unity3d.com/attachments/screen568x568-4-jpeg.108285/" rel="nofollow noreferrer">unity3d.com</a>)</sub></p>
  <p>I would like to achieve something similar, but am having trouble implementing it. I have localized my app and have my Localizable.strings files all set up. I'd imagine it has something to do with storing the language selected in NSUserDefaults, but how can I make the app use the appropriate Localizable.strings file once a language has been chosen? Or is that the wrong way to approach it?</p>
  <p>How have others successfully implemented this feature in Swift?</p>