iOS 9中的MPMoviePlayer

Question

我已经在iOS 8中实现了在后台播放电影的功能，现在当我想在iOS
9中使用它时，它会向我发出警告，并说最好不要使用MPMoviePlayer而是使用AVPlayer。但是我对AVPlayer一无所知。如何在不使用AVPlayer而不是MPMoviePlayer的警告的情况下将其转换为适当的函数？继承人的功能：

func playVideo() ->Bool {




    let path = NSBundle.mainBundle().pathForResource("video", ofType:"mov")
    //take path of video

    let url = NSURL.fileURLWithPath(path!)

    moviePlayer = MPMoviePlayerController(contentURL: url)
    //asigning video to moviePlayer

    if let player = moviePlayer {
        player.view.frame = self.view.bounds
        //setting the video size to the view size

        player.controlStyle = MPMovieControlStyle.None
        //Hiding the Player controls


        player.prepareToPlay()
        //Playing the video


        player.repeatMode = .One
        //Repeating the video

        player.scalingMode = .AspectFill
        //setting the aspect ratio of the player

        self.view.addSubview(player.view)
        self.view.addSubview(blurView)
        self.view.sendSubviewToBack(blurView)
        self.view.sendSubviewToBack(player.view)

        //adding the player view to viewcontroller
        return true

    }
    return false
}

Answer 1

AVPlayerViewController是UIViewController的子类。因此，不要使用常规的视图控制器，而是按照以下步骤创建自定义电影播放器​​控制器：

不要将AVPlayerViewController子类化。不支持覆盖此类的方法，并导致未定义的行为。

尝试这样：

import UIKit
import AVKit
import AVFoundation
class MoviePlayerViewController: AVPlayerViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        player = AVPlayer(URL: url)
        videoGravity = AVLayerVideoGravityResizeAspect
        showsPlaybackControls = true
        //  player?.play() // uncomment this line to autoplay
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "didPlayToEndTime", name: AVPlayerItemDidPlayToEndTimeNotification, object: nil)
    }
    func didPlayToEndTime(){
        print("didPlayToEndTime")
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

要将其用作背景，可以执行以下操作：

import UIKit
import AVKit
import AVFoundation

class ViewController: UIViewController {
    let moviePlayerController = AVPlayerViewController()
    var aPlayer = AVPlayer()
    func playBackgroundMovie(){
        if let url = NSBundle.mainBundle().URLForResource("video", withExtension: "mov") {
            aPlayer = AVPlayer(URL: url)
        }
        moviePlayerController.player = aPlayer
        moviePlayerController.view.frame = view.frame
        moviePlayerController.view.sizeToFit()
        moviePlayerController.videoGravity = AVLayerVideoGravityResizeAspect
        moviePlayerController.showsPlaybackControls = false
        aPlayer.play()
        view.insertSubview(moviePlayerController.view, atIndex: 0)
    }

    func didPlayToEndTime(){
        aPlayer.seekToTime(CMTimeMakeWithSeconds(0, 1))
        aPlayer.play()
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        playBackgroundMovie()
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "didPlayToEndTime", name: AVPlayerItemDidPlayToEndTimeNotification, object: nil)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}