CODEWITHSUNDEEP
iosswift4.2deinit
Jagadeesh K
Jagadeesh K

Reputation: 121

swift deinit method not calling

In UIViewController deinit method not calling in ios swift4.2

I have tried below code for navigate to next viewController after navigation in popToViewcontroller deinit method not calling.

 let data = isSearchEnabled ? repository.filteredList[index] : repository.list[index]
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    (appDelegate.window?.rootViewController as! UITabBarController).tabBar.isHidden = true
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let viewController = storyboard.instantiateViewController(withIdentifier: "AuctionDetailsViewController") as! AuctionDetailsViewController
    viewController.auction = data.getAuctionData()
    viewController.parentVC = self
    parentNavigationController?.pushViewController(viewController, animated: true)

PushView :

deinit {
    print("AuctionDetailsViewController deallocated...")
}

The above deinit method should be call on popToViewcontroller

Upvotes: 2

Views: 4519

Answers (1)

Mahendra
Mahendra

Reputation: 8914

You need to aware about the memory management done ay iOS using ARC. You can read this here

Deinit() is not called, if viewcontoller...

holds the strong reference of an object(retain cycle)

you need to check and remove the unnecessary strong references to an object to avoid retail cycle

has notification observer

you need to unregister an observer because the notification center retains the observer until you unregister it.

uses of delegates (hold the strong reference of it)

if view controller is confirming the protocol that delegate should be marked as weak.

The above mentioned are the some points that prevents the view controller to dealloc and deinit is never called. There may be other points reason too for the same.

Upvotes: 2

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