Swift AVPlayer 在 iOS 15.4 中寻求 completionHandler 返回 false

我们正在try 在我们的SwiftUI应用程序中实现AVPlayer seek，它在iOS 15.4之前就已经运行，但在更新之后就不再运行了.

let playerCurrentTime = CMTimeGetSeconds(player.currentTime())
let newTime = playerCurrentTime + 45
let time2: CMTime = CMTimeMake(value: Int64(newTime * 1000 as Float64), timescale: 1000)
player.seek(to: time2, toleranceBefore: CMTime.zero, toleranceAfter: CMTime.zero) { success in
   print(success)
}

completionHandler立即被调用，success=false.

我们正在使用以下初始化代码从URL流式传输MP3文件:

playerItem = AVPlayerItem(url: url)
        
player = AVPlayer(playerItem: playerItem)
player.addPeriodicTimeObserver(forInterval: CMTime(value: 1, timescale: 2), queue: DispatchQueue.main) { _ in
        if self.player.currentItem?.status == .readyToPlay {
            self.currentTimeInSeconds = CMTimeGetSeconds(self.player.currentTime())
            self.progressInPct = Double(self.currentTimeInSeconds) / Double(self.totalTimeInSeconds)
            self.nowPlayingInfo[MPNowPlayingInfoPropertyPlaybackRate] = 1
            MPNowPlayingInfoCenter.default().nowPlayingInfo = self.nowPlayingInfo
                self.setupNowPlaying()
        } else {
            self.nowPlayingInfo[MPNowPlayingInfoPropertyPlaybackRate] = 0
            MPNowPlayingInfoCenter.default().nowPlayingInfo = self.nowPlayingInfo
        }
}

我们也试着在currentItem上搜索，但也没有成功.

player.currentItem?.seek(to: time, toleranceBefore: CMTime.zero, toleranceAfter: CMTime.zero)

还有谁经历过这样的事情，有什么建议吗？

更新:

struct testView: View {
    var player = AVPlayer()

    var body: some View {
        Button {
            self.startPlayer(url: episode.streamUrl!)
        }
        label: {
            Text("Test")
        }
    }
    func startPlayer(url: String) {
        let playerItem = AVPlayerItem(url: URL(string: url) !)
        self.player.replaceCurrentItem(with: playerItem)
        player.play()

        DispatchQueue.main.asyncAfter(deadline: .now() + 5) {
            let time2: CMTime = CMTimeMake(value: Int64(45 * 1000 as Float64), timescale: 1000)
            player.seek(to: time2, toleranceBefore: CMTime.zero, toleranceAfter: CMTime.zero) {
                success in
                    print(success)
            }
        }
    }
}

打印"假".