[TIMOB-25793] iOS: No callback when not granting push notification permission (Apple bug)

   var deviceToken = null; 
    
   // Check if the device is running iOS 8 or later 
   function checkPush() { 
     // Wait for user settings to be registered before registering for push notifications 
     Ti.App.iOS.addEventListener('usernotificationsettings', function registerForPush() { 
       // Remove event listener once registered for push notifications 
       Ti.App.iOS.removeEventListener('usernotificationsettings', registerForPush); 
        
       Ti.Network.registerForPushNotifications({ 
         success: deviceTokenSuccess, 
         error: deviceTokenError, 
         callback: receivePush 
       }); 
     }); 
      
     // Register notification types to use 
     Ti.App.iOS.registerUserNotificationSettings({ 
       types: [ 
         Ti.App.iOS.USER_NOTIFICATION_TYPE_ALERT, 
         Ti.App.iOS.USER_NOTIFICATION_TYPE_SOUND, 
         Ti.App.iOS.USER_NOTIFICATION_TYPE_BADGE 
       ] 
     }); 
   }  
    
   // Process incoming push notifications 
   function receivePush(e) { 
     alert('Received push: ' + JSON.stringify(e)); 
   } 
   // Save the device token for subsequent API calls 
   function deviceTokenSuccess(e) { 
     deviceToken = e.deviceToken; 
     alert('SUCCESS!');
   } 
    
   function deviceTokenError(e) { 
     alert('Failed to register for push notifications! ' + e.error); //this is the function that never gets thrown. 
   } 
   
   var win = Ti.UI.createWindow({
     backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
    title: 'Trigger'
   });
   
   btn.addEventListener('click', function() {
    checkPush();
   });
   
   win.add(btn);
   win.open();