iOS 9 中的 MPMoviePlayer答案

【问题标题】：MPMoviePlayer in iOS 9iOS 9 中的 MPMoviePlayer
【发布时间】：2015-12-14 21:03:41
【问题描述】：

我在 iOS 8 中创建了一个在后台播放电影的功能，现在当我想在 iOS 9 中使用它时，它给了我一个警告，并说最好不要使用 MPMoviePlayer，而是使用 AVPlayer。但我对 AVPlayer 一无所知。我怎样才能将其转换为正确的函数而不发出警告使用 AVPlayer 而不是 MPMoviePlayer？这是功能：

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
}

【问题讨论】：

标签： ios swift avplayer ios9 mpmovieplayer

【解决方案1】：

AVPlayerViewController 是 UIViewController 的子类。因此，不要使用常规视图控制器，而是按如下方式创建自定义电影播放器控制器：

不要继承 AVPlayerViewController。覆盖这个类的方法不受支持并导致未定义的行为。

试试这样：

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，您可以执行以下操作：

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.
    }
}

【讨论】：

很抱歉打扰您，但我如何在另一个 viewController 中使用它？我只想在我的主视图控制器的背景中反复播放大约 15 秒的电影。
我仍然不知道如何在另一个视图控制器中使用它。
只需将 playBackgroundMovie 方法和 didPlayToEndTime 方法添加到您的视图控制器。将 playBackgroundMovie() 添加到 viewDidLoad。添加导入语句并在视图控制器中声明这 2 个变量（moviePlayerController 和 aPlayer）。
好的，我添加了它们并声明了变量。声音正在播放，但屏幕是黑色的。
完美运行！对不起，打扰你。谢谢你的时间。我真的很感激。

【解决方案2】：

适用于 iOS 9

import AVFoundation

let path = NSBundle.mainBundle().pathForResource("videoName", ofType:"mp4")

let url = NSURL(fileURLWithPath: path!)
let playerItem = AVPlayerItem(URL: url)
let player = AVPlayer(playerItem: playerItem)
let playerLayer = AVPlayerLayer(player: player)

playerLayer.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.height)
videoView.layer.addSublayer(playerLayer)

player.actionAtItemEnd = AVPlayerActionAtItemEnd.None

NSNotificationCenter.defaultCenter().addObserver(self,
        selector: "playerItemDidReachEnd",
        name: AVPlayerItemDidPlayToEndTimeNotification,
        object: player.currentItem)

player.play()

func playAction()
{
    playerItem.seekToTime(kCMTimeZero)

    player.play()
    playButton.removeFromSuperview()
    playButton = nil
}

func playerItemDidReachEnd()
{
    let buttonImage = UIImage(named: "playButton.png")
    playButton = UIButton(frame: CGRectMake((self.view.frame.width - 168) / 2, (self.view.frame.height - 110) / 2, 168, 110))
    playButton.setImage(buttonImage, forState: .Normal)
    playButton.alpha = 0.6
    playButton.addTarget(self, action: "playAction", forControlEvents: .TouchUpInside)
    self.view.addSubview(playButton)
}

【讨论】：

【解决方案3】：

导入 UIKit 导入媒体播放器类视频视图：UIViewController {

var videoPlayer:MPMoviePlayerController!
override func viewDidLoad() {
     super.viewDidLoad()

let videoString:String = Bundle.main.path(forResource: "here you can place your video name", ofType:".mp4")!
        let videoURL = NSURL.init(fileURLWithPath: videoString)
        videoPlayer = MPMoviePlayerController(contentURL: videoURL as URL!)
        videoPlayer.view.frame = CGRect(x: 0, y: 0, width: videoView.frame.size.width, height: videoView.frame.size.height)
        videoView.addSubview(videoPlayer.view)
        videoPlayer.prepareToPlay()
        videoPlayer.shouldAutoplay = false
        videoPlayer.isFullscreen = false
        videoPlayer.controlStyle = MPMovieControlStyle.embedded
       }
       }

【讨论】：