title: Swift local notification icon badge number not incrementing
body: <p>I have a problem.
  my app icon badge is not incrementing when a notification fires. i can only set </p>
  
  <pre><code>localNotification.applicationIconBadgeNumber
  </code></pre>
  
  <p>to 0 or 1.</p>
  
  <p>if i set </p>
  
  <pre><code>localNotification.applicationIconBadgeNumber = localNotification.applicationIconBadgeNumber + 1
  </code></pre>
  
  <p>Badge number updates only the first time, and then remain at its value.</p>
  
  <p>There is a method to increment that value?i have searched internet but i can't figure out how solve this problem.</p>
  
  <p>thank you in advance!</p>