变为nil从不同的视图引用YTPlayer

Question

我想从屏幕转换目标控制视频视图的视频播放器。

我想通过点按小区来播放视频

尝试

//选择（点击）到单元格

override func tableView(_ table: UITableView,didSelectRowAt indexPath: IndexPath) {

          let video = ViewController()

          video.playerView.playVideo()

    }

但是致命的错误：在打开一个可选值时意外地发现了nil

附加：

我尝试使用https://github.com/youtube/youtube-ios-player-helper

中的YTPlayer

但我不明白如何写代码＆＃34; YTPlayer＆＃34;。

YTPlayer没有YTPlayer（存在YTPlayerView）和YTPlayerLayer。

我的viewcontoller代码

import UIKit
import youtube_ios_player_helper
import AVFoundation

class ViewController: UIViewController, YTPlayerViewDelegate{

@IBOutlet var playerView: YTPlayerView!

var appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate



override func viewDidLoad() {
    super.viewDidLoad()

    self.playerView.delegate = self

    self.playerView.sizeToFit()



    let vars = ["playsinline": 1, "controls": 2, "showinfo": 0, "origin":"https://www.google.com"] as [String : Any]

    if self.appDelegate.selectMV == ""
    {
        print("Not Load",self.appDelegate.selectMV)
    }
    else
    {
        print("Load",self.appDelegate.selectMV)
        playerView.load(withVideoId: self.appDelegate.selectMV, playerVars: vars)
    }

    let audioSession = AVAudioSession.sharedInstance()

    do {

        try audioSession.setCategory(AVAudioSessionCategoryPlayback)

    }

    catch {

        print("")

    }


}

func playerViewDidBecomeReady(_ playerView: YTPlayerView) {
    playerView.playVideo()
}

func play() {
    print("Push! play")
    //Error playerView nil 
    playerView.load(withVideoId: self.appDelegate.selectMV)
    playerView.playVideo()
    }

}

Answer 1

它很简单..你需要在doselect中编写代码。但是这种代码在这里永远不会起作用。你必须在ViewDidLoad（）或ViewWillAppear（）中这样编码。

self.player = AVPlayer(url: NSURL(fileURLWithPath: filePath) as URL)
self.playerLayer = AVPlayerLayer(player: self.player)
self.playerLayer.frame = self.vview.bounds

然后在didSelect Only代码中只需

Player.play()

如果你想改变playerItem，只需在didSelect中编写代码就像这样..

player.replaceCurrentItemWithPlayerItem(AVPlayerItem(URL: NSURL(fileURLWithPath: filePath)))

这是单一视图。尝试这样，如果您需要任何帮助，请随时问我。