ios - 无法弄清楚如何解决内存泄漏

Question

这是我第一次尝试为我构建的第一个应用程序修复内存泄漏。当我使用 Leaks 工具时，我的登录视图控制器上出现 1 个泄漏，据我所知，它与我用于循环视频背景的 AudioToolBox (AVFoundation) 有关。

所以我想我会尝试将AVPlayer变量设置为weak，但这对泄漏没有任何作用。

如何正确修复此泄漏？

这是与循环背景视频相关的代码...

           weak var player : AVPlayer?
           weak var playerLayer : AVPlayerLayer?


         override func viewDidLoad() {
              super.viewDidLoad()

              playBackgroundVideo()
          }



         func playBackgroundVideo() {
            guard let path = Bundle.main.path(forResource: "dumbbells2480", ofType: "mov") else { return }
            player = AVPlayer(url: URL(fileURLWithPath: path))
            player!.actionAtItemEnd = AVPlayer.ActionAtItemEnd.none
            playerLayer = AVPlayerLayer(player: player)
            playerLayer!.frame = self.view.frame
            playerLayer!.videoGravity = AVLayerVideoGravity.resizeAspectFill
            self.view.layer.insertSublayer(playerLayer!, at: 0)
            NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidReachEnd), name: Notification.Name.AVPlayerItemDidPlayToEndTime, object: player!.currentItem)
            NotificationCenter.default.addObserver(self,selector: #selector(playItem),name: UIApplication.willEnterForegroundNotification, object: nil)
            
            player!.seek(to: CMTime.zero)
            player!.play()
            self.player?.isMuted = true
            
            view.bringSubviewToFront(authStackView)
        }
        
        @objc func playerItemDidReachEnd(){
            player!.seek(to: CMTime.zero)
        }
        
        @objc private func playItem() {
            playerItemDidReachEnd()
            player?.play()
            
            if let playerlayer = playerLayer {
                view.layer.insertSublayer(playerlayer, at: 0)
            }
        }

标签： iosswiftmemory-leaks

Answer 1

这种泄漏不仅不是微不足道的（一次 16 个字节，非常小，无法在强大的显微镜下辨认出来），而且仪器显示中没有证据表明它与您的代码有任何关系。最佳策略：继续前进。