title: How can open an iphone app from my app in Swift?
body: <p>How can I open an app from my app in Swift? I need open contacts book to select the contact and save on my app, but I don't know how to do this.. I'm reading how read the contacts and show into a table view but not about how to open the contact book app.  And also I'm reading how to open with UIApplication.sharedApplication() but I only show how to open urls...</p>
  
  <p>There is some form to make this?</p>
  
  <p>Thanks!</p>