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

Question

这是一个名为AVPlayer的基本playMe函数，可通过AppleTV通过Swift播放MP3，MP4或Wav。 如何将其与AVPlayerViewController结合使用-即，如何使playMe（“ video”，“ mp4”）在AVPlayerViewController播放，在Main.storyboard和AVPlayerViewController之间建立连接需要哪些步骤？ GUI和Swift代码中？

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

一种实现方法是子类化AVPlayerViewController 。 AVPlayerViewController具有一个名为player的AVPlayer属性。 AVPlayerViewController的子类可能看起来像这样：

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)
    }

}

此实现将显示默认的播放控件，并且可以与Siri遥控器一起使用。

这是使用prepareForSegue通过按下按钮来执行此操作的代码：

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()
        }
    }

}