AVPlayer 不通知错误

Question

我需要为

AVPlayer

实现错误处理。我使用

AVPlayer(url: audioUrl)

创建一个实例，其中

audioUrl

是远程 mp3 文件的 URL。

我订阅这样的通知：

func observeAudioTrack() {
    guard let currentItem = player.currentItem else { return }

    notificationCenter.addObserver(self, selector: #selector(playerDidFail), name: .AVPlayerItemFailedToPlayToEndTime, object: currentItem)
    notificationCenter.addObserver(self, selector: #selector(playerDidLogError), name: .AVPlayerItemNewErrorLogEntry, object: currentItem)
}

但是，当我测试关闭互联网连接或使用无效 URL 时，这些方法都不会被调用。

player.status

是

readyToPlay

，

player.error

是

nil

。

我成功接收了

AVPlayerItemNewErrorLogEntry

，但仅限于流（

m3u8

格式）。

PS。我使用装有 iOS 15.0 的 iPhone 12 Pro 进行测试。

Answer 1

NSNotification.Name.AVPlayerItemNewErrorLogEntry 从 iOS 6.0 开始已弃用。请改用 AVPlayerItem.newErrorLogEntryNotification。这个对我有用。同样的事情可能适用于 NSNotification.Name.AVPlayerItemDidPlayToEndTime 但我还没有测试过。请改用 AVPlayerItem.failedToPlayToEndTimeNotification。

仅供代码阅读器使用的代码：

func observeAudioTrack() {
    guard let currentItem = player.currentItem else { return }

    notificationCenter.addObserver(self, selector: #selector(playerDidFail), name: AVPlayerItem.failedToPlayToEndTimeNotification, object: currentItem)
    notificationCenter.addObserver(self, selector: #selector(playerDidLogError), name: AVPlayerItem.newErrorLogEntryNotification, object: currentItem)
}

我在AVFoundation中找到了信息：

@available(macOS, introduced: 10.7, deprecated: 100000, message: "Use AVPlayerItem.failedToPlayToEndTimeNotification instead.")
@available(iOS, introduced: 4.3, deprecated: 100000, message: "Use AVPlayerItem.failedToPlayToEndTimeNotification instead.")
@available(tvOS, introduced: 9.0, deprecated: 100000, message: "Use AVPlayerItem.failedToPlayToEndTimeNotification instead.")
@available(watchOS, introduced: 1.0, deprecated: 100000, message: "Use AVPlayerItem.failedToPlayToEndTimeNotification instead.")
public static var AVPlayerItemFailedToPlayToEndTime: NSNotification.Name { get }

和

@available(macOS, introduced: 10.9, deprecated: 100000, message: "Use AVPlayerItem.newErrorLogEntryNotification instead.")
@available(iOS, introduced: 6.0, deprecated: 100000, message: "Use AVPlayerItem.newErrorLogEntryNotification instead.")
@available(tvOS, introduced: 9.0, deprecated: 100000, message: "Use AVPlayerItem.newErrorLogEntryNotification instead.")
@available(watchOS, introduced: 1.0, deprecated: 100000, message: "Use AVPlayerItem.newErrorLogEntryNotification instead.")
public static var AVPlayerItemNewErrorLogEntry: NSNotification.Name { get }

Answer 2

尝试这样注册 NotificationCenter.default.addObserver(self, 选择器: #selector(finishedPlaying), 名称：NSNotification.Name.AVPlayerItemDidPlayToEndTime，对象：playerItem）