title: How to register a custom app opening URL scheme with Xcode 4?
body: <p>Xcode4 is asking for a huge number of arguments just to make this simple thing possible:</p>
  
  <pre><code>NSString *stringURL = @"twitterriffic://";
  NSURL *url = [NSURL URLWithString:stringURL];
  [[UIApplication sharedApplication] openURL:url];
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/n29Lx.png" alt="Xcode 4 Info.plist editor"></p>
  
  <p>What are all these properties for? Why an image? Must I repeat the app identifier here? What role to choose if I want anyone to be able to call this URL to open my app? And what are these Additional url type properties for?</p>
  
  <p>I found no Xcode4-related tutorial how to register such an URL scheme with Xcode 4. </p>