ios - 如何在 iOS 中播放视频 PHAsset？

Question

我想播放来自 PHAsset 的视频，从 iOS 照片中收集。 PHAsset 视频 nsurl ( https://stackoverflow.com/a/35099857/1084174 ) 对我自己的应用程序有效让我们说 MyPlayer 片刻/ block 。当我将图像/视频复制到 MyPlayers 自己的沙箱时，只有 nsurl 才会始终有效。在我看来，

I need to copy each video from temporary PHAsset nsurl to MyPlayers sandbox (appgroup/documents) and only then I can play the video with sandbox relative nsurl.

如果是这种情况，所有其他播放器如何即时播放长视频？如果有任何其他方式可以在不复制到应用程序沙箱的情况下播放视频，请告诉我方式。

Answer 1

经过几天的实验终于找到了解决方案，

导入文件

import AVKit

来自 PHAsset

static func playVideo (view:UIViewController, asset:PHAsset) {

        guard (asset.mediaType == PHAssetMediaType.Video)

            else {
                print("Not a valid video media type")
                return
        }

        PHCachingImageManager().requestAVAssetForVideo(asset, options: nil, resultHandler: {(asset: AVAsset?, audioMix: AVAudioMix?, info: [NSObject : AnyObject]?) in

            let asset = asset as! AVURLAsset

            dispatch_async(dispatch_get_main_queue(), {

                let player = AVPlayer(URL: asset.URL)
                let playerViewController = AVPlayerViewController()
                playerViewController.player = player
                view.presentViewController(playerViewController, animated: true) {
                    playerViewController.player!.play()
                }
            })
        })
    }

来自 AppLocalUrl

static func playVideo (view:UIViewController, appLocalUrl:NSURL) {

        dispatch_async(dispatch_get_main_queue(), {

            let player = AVPlayer(URL: appLocalUrl)
            let playerViewController = AVPlayerViewController()
            playerViewController.player = player
            view.presentViewController(playerViewController, animated: true) {
                playerViewController.player!.play()
            }
        })
    }