title: Spotify iOS SDK - "flip-flop" authentication not working
body: <p>I'm trying to do "Flip-Flop" authentication in my iOS app using the Spotify SDK <a href="https://github.com/spotify/ios-sdk/releases/tag/beta-14" rel="nofollow">beta-14.</a> </p>
  
  <p>I'm trying to do this using SPTAUTH with the following code:</p>
  
  <pre><code>      [[UIApplication sharedApplication] openURL:[[SPTAuth defaultInstance]loginURL]];
  </code></pre>
  
  <p>everytime that URL is opened, the app jumps to safari and NOT the Spotify iOS app.</p>
  
  <p>What has been confusing is that, I have been seeing on Spotify developer forms that people have had the flip-flop authentication with the Spotify iOS app working, <a href="https://github.com/spotify/ios-sdk/issues/505" rel="nofollow">link here</a>. I for the life of me cannot get it to work. </p>
  
  <p>Please shed some light here thanks!</p>