AVPlayerViewController/AppleTV4:如何将AVPlayer函数连接到AVPlayerViewController？

Question

这是一个基本的playMe函数，调用AVPlayer，使用AppleTV通过Swift播放MP3、MP4或Wav。如何将其与AVPlayerViewController结合--例如，如何使playMe(“视频”、"mp4")在AVPlayerViewController中播放，在图形用户界面和Swift代码中在Main.storyboard和AVPlayerViewController之间建立连接需要执行哪些步骤？

func playMe(inputfile: String, inputtype: String) {
    let path = NSBundle.mainBundle().pathForResource(inputfile, ofType:inputtype)!
    let videoURL = NSURL(fileURLWithPath: path)
    let player = AVPlayer(URL: videoURL)
    let playerLayer = AVPlayerLayer(player: player)
    playerLayer.frame = self.view.bounds
    self.view.layer.addSublayer(playerLayer)
    player.play()
}

Answer 1

可以这样做的一种方法是对AVPlayerViewController进行子类化。AVPlayerViewController有一个名为player的AVPlayer属性。AVPlayerViewController的子类可能如下所示：

import UIKit
import AVKit

class MyPlayerViewController: AVPlayerViewController {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        let path = NSBundle.mainBundle().pathForResource("myVideo", ofType:"mov")!
        let videoURL = NSURL(fileURLWithPath: path)
        player = AVPlayer(URL: videoURL)
    }

}

这一实现将显示默认的播放控制，并将与Siri遥控器一起使用。

以下是使用prepareForSegue通过按钮按下完成此操作的代码：

import UIKit
import AVFoundation
import AVKit
let playerViewControllerSegue = "play";
class MyViewController: UIViewController {    
    @IBAction func playMovie(sender: UIButton) {
        self.performSegueWithIdentifier(playerViewControllerSegue, sender: self);
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if (segue.identifier == playerViewControllerSegue){
            let path = NSBundle.mainBundle().pathForResource("7second", ofType:"mp4")!
            let videoURL = NSURL(fileURLWithPath: path)
            let player = AVPlayer(URL: videoURL)
            let playerViewController = segue.destinationViewController as! AVPlayerViewController
            playerViewController.player = player
            playerViewController.player?.play()
        }
    }

}