iOS 如何在 WKWebView 中使用 YouTube iFrame API 事件

Question

我想自动播放 YouTube 视频或通过控制台记录视频的当前时间，但似乎没有任何效果。我需要知道我在哪里放置这个事件以及如何对它们进行回调？

override func viewDidLoad() {
    super.viewDidLoad()

    self.ytPlayer.delegate = self
    self.ytPlayer.load(withVideoId: "0UjHDYppsjU", playerVars: playerVars)
}

func playerViewDidBecomeReady(_ playerView: WKYTPlayerView) {
    playerView.playVideo();
}

func playerView(_ playerView: WKYTPlayerView, didPlayTime playTime: Float, time d: TimeInterval) {
    print("time \(playTime)")
    self.progressBar.progress = self.progressBar.progress + (playTime)
}

func getDuration(_ playerView: WKYTPlayerView, duration d: TimeInterval) {
    print("duration \(d)")
}

Answer 1

如果你想启用自动播放，你可以实现委托WKYTPlayerViewDelegate，尤其是函数playerViewDidBecomeReady。一个简单的用法示例可能是：

import UIKit

class ViewController: UIViewController, WKYTPlayerViewDelegate {
    @IBOutlet weak var ytPlayer: WKYTPlayerView!

    override func viewDidLoad() {
        super.viewDidLoad()

        var playerVars: [String:Any] = [
            "autoplay": 1,
            "playsinline" : 1,
            "enablejsapi": 1,
            "wmode": "transparent",
            "controls": 0,
            "showinfo": 0,
            "rel": 0,
            "modestbranding": 1,
            "iv_load_policy": 3 //annotations
        ]
        self.ytPlayer.delegate = self
        self.ytPlayer.load(withVideoId: "DfWI-yV7TUY", playerVars: playerVars)
    }

    func playerViewDidBecomeReady(_ playerView: WKYTPlayerView) {
        playerView.playVideo()

        playerView.getDuration { (timeInterval, error) in
            print("duration: \(timeInterval)")
        }
    }

    func playerView(_ playerView: WKYTPlayerView, didPlayTime playTime: Float) {
        print("time \(playTime)")
    }
}