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Questions tagged [deinit]

Swift programming language object destructor

A deinitializer is called immediately before a class instance is deallocated. You write deinitializers with the deinit keyword, similar to how initializers are written with the init keyword. Deinitializers are only available on class types.

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Deinit never called

I'm creating a ViewController object an pushing it to a navigation controller. When the object is being popped from the stack - it is not being release and Deinit is not being called. What can be the reason for that? Here's the code that…
YogevSitton
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Deallocate SKScene after transition to another SKScene in SpriteKit

I have a view controller that has three skscenes as children. When I transition from one to another, the old skscene doesn't get deallocated. I want it to get deallocated as if it was never there. Example: When I first load the app, only 1 skscene…
Max Hudson
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UITableViewCell object deinit never called

the problem is in my project. But I also tried in new xcode draft project that Master-Detail Application one. I have created base Cell class and mapped the cell on storyboard. After delete operation deinit never called. There is no strong or weak…
ervanux
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Can I use didSet in deinit?

I added a variable of Timer to my class, and used its didSet observer to invalidate old value var timer: Timer? { didSet { oldValue?.invalidate() } } deinit { timer = nil } I thought this would be enough to invalidate timer when class is…
Damian Dudycz
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Swift's deinit is not called

private let DBItemCellIdentifier = "ItemCellIdentifier" private let DBItemSegueIdentifier = "ItemSegueIdentifier" class DBItemsViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, DBItemTableViewCellDelegate { …
Bartłomiej Semańczyk
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iOS unable to remove Notification observer. Deinit not getting called

I have a UIView similar to the one you can see below: class ViewTaskViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { override func viewDidLoad() { super.viewDidLoad() subscribeToNotifications() } func…
Sohil Pandya
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Invoke code in extension on object deinit?

In Swift (I'm using 4.1), is there a way to do some clean-up in an extension when an object is being destructed? I have in mind the kind of code that would go in deinit(), but an extension can't declare deinit(). (Besides which, if several…
Ted Hopp
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UISplitViewController: Deinit DetailView in collapsed mode

I've been struggling on this for a while now, but I wasn't able to find a solution: I've got an iOS 9 app that supports all device families, uses size classes and is programmed with Swift 2.0. I'm using a UISplitViewController and everything works…
croX
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Is it possible to override deinit in Swift?

When creating a subclass from another class, it is required to override the init() function, but you cannot override the deinit 'function'. Is this possible in Swift? Here is an example class Foo { init(){ print("Foo created") } …
Danoram
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how to call deinit method within class definition in swift

I want to define a method that can destroy the instance it belongs to when a variable in this class has increased to a certain value. I attempted to do something like following: var calledTimes = 0 //some other method would update this value func…
Joseph Zhou
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NotificationCenter.default.removeObserver(self) in deinit, why deinit it even get called?

Starting with ios 9 it is not necessary to unsubscribe from notification center since ios handles this automatically, but prior to ios 9 developers had to manually call NotificationCenter.default.removeObserver(self) in order to avoid memory leaks…
starwarrior8809
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Swift iOS -Should Deinit get called inside child View Controller when added as a child to another View Controller?

I have a childVC(vc3) inside a parentVC(vc2) inside another parentVC(vc1). I'm doing it this way for animation purposes. What happens is I add vc3 as a child to vc2. I have a collectionView that pushes on vc1. Once vc1 is on scene vc2 is added to…
Lance Samaria
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Reference type inside value type

I am exploring Swift value types particularly structs to get a better understanding of it's uses in different scenario. I was amazed to see how enum can be used to build Binary Search Tree using indirect which introduces a thin layer of reference…
Rahul
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Why is deinit not called until UIView is added to parent again?

I have a UIView that am adding to a UIViewController and am generally testing de-initialization to make sure I am doing things right. But when I don't set the variable in my viewController to nil and only use .removeFromSuperView() , the deinit()…
TheBen
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swift deinit method not working when UIView is removed from memory

In Swift ARC is calling deinit when any UIViewController is removing from memory , but it's not getting called if any UIView is removed from memory. for example In case of UIViewController Class deinit is working great class…
Anupam Mishra
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