检测以纵向或横向全屏播放的视频

Question

我参与了这两天多。请问我没有解决办法。

我的要求是视频应该播放纵向、全屏、横向。我的问题是如何识别视频正在播放全屏横向或纵向。我已经实现了viewWillTransitionToSize 方法。但是AVPlayer 有全屏箭头按钮。我如何识别用户点击了该选项。

第二个要求，一旦视频完成，在视频节目重播或下一个或上一个选项之上创建视图。

这是我的代码；

 if videoCellVal == nil {
            videoCellVal = videoCell

            comPlayerControl = AVPlayerViewController()

            if let player = comPlayerControl {

                let videoURL: String = "http://cdnapi.kaltura.com/p/11/sp/11/playManifest/entryId/"+selectedSubmission.transcodeRefId+"/format/applehttp/protocol/http/a.m3u8"
                let playerItem = AVPlayerItem(URL: NSURL(string: videoURL)! )
                commmentPlayer = AVPlayer(playerItem: playerItem)
                player.player = commmentPlayer
                player.view.frame = videoCell.frame
                player.view.sizeToFit()
                player.showsPlaybackControls = true
                NSNotificationCenter.defaultCenter().addObserver(self, selector: "playerDidFinishPlaying:",
                    name: AVPlayerItemDidPlayToEndTimeNotification, object: playerItem)


                videoCell.addSubview(player.view)
            }

        }

      func playerDidFinishPlaying(note: NSNotification) {
    print("Video Finished")
    let DynamicView=UIView(frame: CGRectMake(100, 200, 100, 100))
    DynamicView.backgroundColor=UIColor.greenColor()
    DynamicView.layer.cornerRadius=25
    DynamicView.layer.borderWidth=2
    DynamicView.bringSubviewToFront(self.view)
    self.view.addSubview(DynamicView)
}

Answer 1

为了检测全屏或视频大小的变化，你可以使用 KVO 的 AVPlayerViewController，代码可以是这样的：

[comPlayerControl .addObserver(self, forKeyPath:"videoBounds" , options: NSKeyValueObservingOptions.New, context: nil)]

override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
           print("KeyPath \(keyPath)")
        if keyPath == "videoBounds" {
            print("New Video Bounds \(change)")
        }
    }

在change 字典中，您可以检查视频帧/边界变化的变化

对于您提到的旋转，您可能必须使用viewWillTransitionToSize 或UIDeviceOrientationDidChangeNotification 通知，或者您可以使用UIDevice.currentDevice().orientation 检查当前方向，因为我没有找到任何方法可以检查正在进行的视频中的变化

如果您需要检测视频方向，您可以查看此链接：https://stackoverflow.com/a/25833399/4557505，以及该链接中的其他答案

对于视频的重复，您可以在代码中像这样将时间设置为零：

func playerDidFinishPlaying(notification: NSNotification) {
        if let item = notification.object as? AVPlayerItem {
            item.seekToTime(kCMTimeZero)
            //you may directly play the video or can do further processing
        }
    }

要在项目末尾播放队列中的项目，您可以尝试使用commmentQueuePlayer.advanceToNextItem()

您可以尝试在contentOverlayView 中添加重播、下一个、上一个按钮

let topView = UIView(frame: CGRectMake(0,0, comPlayerControl.view.bounds.width,44))
        topView.backgroundColor = UIColor ( red: 0.5, green: 0.5, blue: 0.5, alpha: 0.379 )
        let btnNext = UIButton(frame:CGRectMake(0,0,80,44))
        btnNext.setTitle("Next", forState:.Normal)
        btnNext.addTarget(self, action:"playNext", forControlEvents:.TouchUpInside)
        btnNext.userInteractionEnabled = true
        btnNext.enabled = true
        topView.addSubview(btnNext)
        comPlayerControl.contentOverlayView?.addSubview(topView) 

---

更新

对于observeValueForKeyPath，你可以试试这样的

var avWidth:CGFloat = 0
var avHeight:CGFloat = 0

override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
    if keyPath == "videoBounds" {
        let rect = change!["new"]! as! NSValue

        if let newrect = rect.CGRectValue() as CGRect? {
            if newrect.width > 0 || newrect.height > 0 {
                if avWidth > 0 || avHeight > 0 {
                    if newrect.width > avWidth || newrect.height > avHeight {
                        print("Full Screen")
                    } else if newrect.width < avWidth || newrect.height < avHeight {
                        print("Normal screen")
                    } else {

                    }
                }
                avWidth = newrect.width
                avHeight = newrect.height
            }
        }
    }
}

Answer 2

如果您查看AVPlayer 的AVPlayerItem，那么它的videoComposition 设置具有renderSize - 您可以检查renderSize width 和height 以确定您是否是横向还是纵向。