SwiftUI - 在 AVPlayer 中添加播放速率控制

问题描述

我在当前的 SwiftUI 项目中使用 AVPlayer。我正在尝试实现类似于 Apple 在其视频播放器上为开发者应用程序提供的播放速度控制（如给定的屏幕截图），但到目前为止还没有找到答案。 任何有关此事的线索将不胜感激。

这是我目前的视频播放器代码。

import AVKit

struct pipPlayer: UIViewControllerRepresentable {
    var videoUrl: URL = URL(string: "Video Link")!

    // Create the player and set the basic controls
    func makeUIViewController(context: UIViewControllerRepresentableContext<pipPlayer>) -> AVPlayerViewController {
        let controller = AVPlayerViewController()
        let player1 = AVPlayer(url: videoUrl)
        controller.player = player1
        controller.allowsPictureInPicturePlayback = true
        controller.player!.play()
        return controller
    }

    func updateUIViewController(_ uiViewController: AVPlayerViewController,context: UIViewControllerRepresentableContext<pipPlayer>) {
    }
}

解决方法

您可以使用 updateUIView 更新播放速率。

struct AVPlayerView: UIViewRepresentable {

    private let player: AVPlayer
    let playbackRate: Float

    init(videoUrl: URL,playbackRate: Float) {
        self.player = AVPlayer(url: videoUrl)
        self.playbackRate = playbackRate
    }

    func makeUIView(context: UIViewRepresentableContext<AVPlayerView>) -> UIView {
        let controller = AVPlayerViewController()
        controller.player = player
        controller.allowsPictureInPicturePlayback = true
        controller.player?.play()
        return controller.view
    }

    func updateUIView(_ uiView: UIView,context: UIViewRepresentableContext<AVPlayerView>) {
        player.rate = playbackRate
    }
}