I have two view controllers, one is the timeline the second one is for the creation. In that second view controller I have a sub view. This sub view is an SKView
. Now every time I segue to it, it increases the memory usage by 2mb (on a real device), but the memory usage stays the same when I unwind it.
So it is like this: I start with a usage of 12mb, then it gets 14-15mb. After the unwind it stays around 14-15mb. After the second segue to it, it becomes 17mb... and so on.
This is the code used in the timeline controller:
@IBAction func createButtonAct(sender: AnyObject) {
self.performSegueWithIdentifier("create", sender: self)
}
@IBAction func unwindFromCreation(segue: UIStoryboardSegue) {
}
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "create"{
let vc = segue.destinationViewController as! CreateViewController
if vc.currCountry == nil || vc.currCountry != self.currCountry{
vc.currCountry = self.currCountry
}
}
}
And this is the code in the create View Controller:
class CreateViewController: UIViewController, UITextViewDelegate {
@IBOutlet weak var bubbleView: SKView!
@IBOutlet var arrow: UIButton!
var ref: Firebase!
let categories = CatsAndColors.categories
@IBOutlet var doneButton: UIButton!
@IBOutlet var titleField: UITextField!
@IBOutlet var descriptionView: KMPlaceholderTextView!
var choosedCat: String!
var selectedCats: NSMutableArray!
var currCountry:String!
var tap: UITapGestureRecognizer!
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(true)
UIApplication.sharedApplication().statusBarStyle = .Default
UIView.animateWithDuration(0.5, animations: { () -> Void in
self.arrow.transform = CGAffineTransformMakeRotation(3.14159)
})
titleField.addTarget(self, action: "textFieldDidChange:", forControlEvents: UIControlEvents.EditingChanged)
titleField.addTarget(self, action: "textFieldDidBegin:", forControlEvents: UIControlEvents.EditingDidBegin)
titleField.addTarget(self, action: "textFieldDidEnd:", forControlEvents: UIControlEvents.EditingDidEnd)
// the targets get removed in viewWillDisappear
selectedCats = NSMutableArray()
}
override func viewDidLoad() {
super.viewDidLoad()
ref = Firebase(url: "https://blabber2.firebaseio.com")
self.doneButton.enabled = false
doneButton.setBackgroundImage(UIImage(named: "Done button inactive"), forState: .Disabled)
doneButton.setTitleColor(UIColor(netHex: 0xF6F6F6), forState: .Disabled)
doneButton.setTitleColor(UIColor.whiteColor(), forState: .Normal)
self.setupBubbles()
self.descriptionView.delegate = self
}
func setupBubbles(){
let floatingCollectionScene = ChooseBubblesScene(size: bubbleView.bounds.size)
// floatingCollectionScene.scaleMode = .AspectFit
/*let statusBarHeight = CGRectGetHeight(UIApplication.sharedApplication().statusBarFrame)
let titleLabelHeight = CGRectGetHeight(self.tibleLabel.frame)*/
bubbleView.presentScene(floatingCollectionScene)
for (category, color) in categories {
let node = ChooseBubbleNode.instantiate()
node!.vc = self
node!.fillColor = SKColor(netHex: color)
node!.strokeColor = SKColor(netHex: color)
node!.labelNode.text = category
floatingCollectionScene.addChild(node!)
}
}
...
And the catsAndColors struct looks like this:
struct CatsAndColors{
static var categories = ["Crime":0x5F5068, "Travel":0xFBCB43, "Religion":0xE55555, "Tech":0xAF3151, "Economy":0x955BA5, "Games":0xE76851, "Climate":0x6ED79A, "Books":0xE54242, "History":0x287572, "Clothes":0x515151, "Sports":0x4AB3A7, "Food":0xD87171, "Politics":0x5FA6D6, "Music":0xDD2E63, "Tv-shows":0x77A7FB]
}
Maybe you have created some sort of retain cycle between your view controllers.
If both view controllers hold a reference to each other, then try declaring one of the references as weak
.
For more information on the topic read Resolving Strong Reference Cycles Between Class Instances .
I solved the problem, it was strong reference in the sknode file.
Thank you for your answers.
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