Xcode 9：获取有关内存泄漏的更多信息

Question

在得知内存泄漏可能是我的 iOS 应用在安装到手机上数小时后崩溃的原因后，我观看并阅读了有关内存泄漏的视频/文章，特别是在 Xcode 中以及如何调试它们。我一直在尝试使用内存调试器和 Xcode 泄漏工具，但没有成功。我想知道，我如何找到泄漏的来源？我附上的屏幕截图显示了许多泄漏之一，它永远不会让我比图片显示的更深入。在视频中，Xcode 使用回溯将它们带到导致问题的代码行，但是在任何情况下我都无法做到这一点。我也注意到泄漏来自 UIKIT，这正常吗？感谢任何帮助，因为我是 Xcode 的新手。

Here is the image.

这是我最初登录视图控制器的一些代码。在第二张图片中，您会看到唯一存在内存泄漏的视图是这个，但是 - 我也无法深入挖掘。 Second image of memory leak from InitialLogInVC

import UIKit

class IntialLoginInViewController: UIViewController {
    @IBOutlet weak var backgroundAlbumArt: UIImageView!
    @IBOutlet weak var foregroundAlbumArt: UIImageView!
    @IBOutlet weak var musicNameLabel: UILabel!
    private weak var imageOne = UIImage(named: "taste.jpg")
    private weak var imageTwo = UIImage(named: "NavReckless.jpg")
    private weak var imageThree = UIImage(named: "watch.jpg")
    private weak var imageFour = UIImage(named: "juicewrld.jpg")

    lazy var imageInformation = [(name:"Taste - Tyga", image:imageOne),(name:"Reckless - Nav", image: imageTwo),(name:"Watch - Travis Scott", image: imageThree), (name:"Goodbye & Good Riddance - Juice Wrld", image: imageFour)]
    private var currentIndex = 0
    static var spotifySession: AnyObject?

    override func viewDidLoad() {
        super.viewDidLoad()
        foregroundAlbumArt.image = imageOne
        backgroundAlbumArt.image = imageOne
        musicNameLabel.text = imageInformation[0].name
        let _ = Timer.scheduledTimer(timeInterval: 10.0, target: self, selector: #selector(imageRefresh), userInfo: nil, repeats: true)
    }

    override var preferredStatusBarStyle : UIStatusBarStyle {
        return .lightContent
    }

    @objc func imageRefresh(){
        if currentIndex == imageInformation.count - 1 {
            currentIndex = 0
        }
        else {
            currentIndex += 1
        }
        //Update Label
        UIView.transition(with: self.musicNameLabel, duration: 2.0, options: [.transitionCrossDissolve] , animations: {
            self.musicNameLabel.text = self.imageInformation[self.currentIndex].name

        }, completion: nil)
        //Update foreground Album
        UIView.transition(with: self.foregroundAlbumArt, duration: 2.0, options: [.transitionCrossDissolve] , animations: {
            self.foregroundAlbumArt.image = self.imageInformation[self.currentIndex].image
        }, completion: nil)
        //Update background Album

        UIView.transition(with: self.backgroundAlbumArt, duration: 2.0, options: [.transitionCrossDissolve] , animations: {
            self.backgroundAlbumArt.image = self.imageInformation[self.currentIndex].image
        }, completion: nil)

    }

}

Answer 1

试试这个

    //Update Label
    UIView.transition(with: self.musicNameLabel, duration: 2.0, options: [.transitionCrossDissolve] , animations: { [weak self] in
        guard let `self` = self else { return }
        self.musicNameLabel.text = self.imageInformation[self.currentIndex].name

    }, completion: nil)

    //Update foreground Album
    UIView.transition(with: self.foregroundAlbumArt, duration: 2.0, options: [.transitionCrossDissolve] , animations: { [weak self] in
        guard let `self` = self else { return }
        self.foregroundAlbumArt.image = self.imageInformation[self.currentIndex].image
    }, completion: nil)
    //Update background Album

    UIView.transition(with: self.backgroundAlbumArt, duration: 2.0, options: [.transitionCrossDissolve] , animations: { [weak self] in
        guard let `self` = self else { return }
        self.backgroundAlbumArt.image = self.imageInformation[self.currentIndex].image
    }, completion: nil)