IBOutlet nil after refreshing data - ios

Question

I'm using XCode 6.3.1 and I'm facing a weird problem that I can't figure it out.
I have a View Controller on my Storyboard opened with a modal segue. When the ViewController is opened it loads some data from my backend (Parse) it looks first on the cache and shows cached data (if exists) while the updated data from server is retrieved on the background. The process is the next:
Get cached data
If cached data exists then update interface
Request server data (In background)
When data arrives update interface
Everything works fine until step 4. When I try to refresh my interface suddenly half of my #IBOutlets are nil and of course app crashes.
what am I missing??
Here's the code:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//eventId is set when the ViewController is instantiated
if eventId != nil {
loadEvent(eventId)
}
}
func loadEvent(id: String) {
var query = Event.query()
query?.cachePolicy = Util.getCachePolicy() //First look in cache, the request network data
query?.getObjectInBackgroundWithId(id, block: { (event: PFObject?, error: NSError?) -> Void in
if error == nil {
var updatedEvent = event as! Event
self.event = updatedEvent
self.updateLayout()
//When self.updateLayout() is called with cached data
//all my IBOutlets are fine but when it's called the second time,
//with data from server half of the IBOutlets are nil
}
})
}
func updateLayout() {
if event != nil {
eventTitle.text = event.name
var paletteColor : UIColor!
var location = event.location
var locationName = location["name"] as! String
eventLocation.text = NSString(format: NSLocalizedString("event_subtitle", comment: ""), event.formattedTimes(), locationName) as String
eventDescription.text = event.abstract
if event.paletteColor != 0 {
paletteColor = Util.colorFromInt(event.paletteColor)
eventHeader.backgroundColor = paletteColor
speakersBlockTitle.textColor = paletteColor
mapButton.tintColor = paletteColor
}
if event.hasPhoto() {
self.eventPhoto.file = event.eventPhoto
self.eventPhoto.loadInBackground({ (image:UIImage?, error:NSError?) -> Void in
UIView.animateWithDuration(0.5, animations: { () -> Void in
self.eventPhoto.alpha = 1.0
})
})
} else {
self.eventPhoto.removeFromSuperview()
if paletteColor == nil {
paletteColor = eventHeader.backgroundColor
}
actionBar.backgroundColor = paletteColor
}
if event.speaker.isDataAvailable() {
var speaker = event.speaker
speakerName.text = speaker["name"] as? String
speakerInfo.text = speaker["speakerInfo"] as? String
speaker["speakerPhoto"]?.getDataInBackgroundWithBlock({ (imageData:NSData?, error:NSError?) -> Void in
if error == nil {
self.speakerPhoto.image = UIImage(data:imageData!)
self.speakerPhoto.layer.cornerRadius = self.speakerPhoto.frame.size.width/2
self.speakerPhoto.clipsToBounds = true
}
})
} else {
speakerBlock.removeFromSuperview()
}
UIView.animateWithDuration(0.5, animations: { () -> Void in
self.eventHeader.alpha = 1.0
self.eventDescription.alpha = 1.0
self.speakerBlock.alpha = 1.0
self.mapButton.alpha = 1.0
})
}
}
This are all the nil IBOutlets:

Answer 1

Since the code in my comment above doesn't display correctly, here's that comment again:
Something like this:
#IBOutlet weak var myOutlet: UIButton! {
didSet {
if myOutlet == nil {
// put a breakpoint on the next line
println("myOutlet set to nil")
}
}
}