AVPlayer 无法播放文件，加载后状态为“未知”

Question

我不知道这段代码有什么问题。播放器项目似乎已加载，但视频无法播放。我只是有一个 swifui 内容视图，其中包含视频播放器和保存播放器的播放器控制器。控制器直接从应用程序结构馈入内容视图，并且加载方法从菜单栏项触发。我已经用多个视频尝试过这个方法。加载后播放器状态始终为“未知”，播放器错误为零。

class PlayerController: ObservableObject {
    @Published var player: AVPlayer = AVPlayer()
    
    func loadURL(url: URL) {
        let newPlayerItem: AVPlayerItem = AVPlayerItem(url: url)
        player.replaceCurrentItem(with: newPlayerItem)
        player.play()
        switch player.status {
        case .unknown:
            print("status unknown")

        case .readyToPlay:
            print("status ready to play")

        case .failed:
            print("status failed")
        }

        print(player.error?.localizedDescription)
    }
}

struct ContentView: View {
    @ObservedObject private var playerController: PlayerController

    var body: some View {
        VideoPlayer(player: playerController.player)
    }
    
    init(playerController: PlayerController) {
        self.playerController = playerController
    }
    
}

视频本应在从 url 加载时播放，但会显示错误屏幕。VideoPlayer 错误屏幕

Answer 1

使用原始代码尝试此方法并适当加载视频 在

.onAppear

中并删除您的

init(playerController: PlayerController)

， 如示例代码所示：

class PlayerController: ObservableObject {
    @Published var player: AVPlayer = AVPlayer()
    
    func loadURL(url: URL) {
        let newPlayerItem: AVPlayerItem = AVPlayerItem(url: url)
        player.replaceCurrentItem(with: newPlayerItem)
        player.play()
        
        switch player.status {
        case .unknown:
            print("status unknown")
            
        case .readyToPlay:
            print("status ready to play")
            
        case .failed:
            print("status failed")
        }
        
        print(player.error)
    }
}

struct ContentView: View {
    @ObservedObject var playerController: PlayerController
    
    var body: some View {
        VideoPlayer(player: playerController.player)
            .onAppear {
                let url = URL(string: "https://getsamplefiles.com/download/mp4/sample-1.mp4")!
                playerController.loadURL(url: url)
            }
    }
    
}

 
@main
struct testApp: App {
    @StateObject var playerController = PlayerController()
    
    var body: some Scene {
        WindowGroup {
            ContentView(playerController: playerController)
        }
    }
}