增加暂停播放功能

Introduce/Record/INVideoExportController.swift

@@ -14,6 +14,18 @@ import BFRecordScreenKit
 class INVideoExportController: BFBaseViewController {
     
     var videoAsset : AVURLAsset?
+    var avplayerTimeObserver: NSKeyValueObservation?
+
+    lazy var progreddL : UILabel = {
+        let l = UILabel(frame: CGRect(x: 0, y: cDevice_iPhoneStatusBarHei, width: cScreenWidth, height: 14))
+        l.textAlignment = .center
+        l.font = UIFont.systemFont(ofSize: 10)
+        l.textColor = .white
+        l.shadowColor = .black
+        l.shadowOffset = CGSize(width: 1, height: 1)
+        return l
+    }()
+    
     
     lazy var progressView : UIView = {
         let v = UIView(frame: CGRect(x: 0, y: navHeadImageView!.bottomY, width: 0, height: 10))
@@ -30,6 +42,23 @@ class INVideoExportController: BFBaseViewController {
         return la
     }()
     
+    lazy var avplayer : AVPlayer = {
+        let avplayer = AVPlayer()
+        avplayerTimeObserver = avplayer.addPeriodicTimeObserver(forInterval: CMTime(value: 1, timescale: 100), queue: DispatchQueue.global()) {[weak self, weak avplayer] time in
+         //    进度监控
+            if let item = avplayer?.currentItem {
+                self?.progreddL.text = String(format: "%.2f / %.2f", CMTimeGetSeconds(time), CMTimeGetSeconds(item.duration))
+                
+            }
+        } as? NSKeyValueObservation
+        
+        NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: avplayer.currentItem, queue: .main) { [weak avplayer] notify in
+            avplayer?.seek(to: CMTime.zero)
+        }
+        
+        return avplayer
+    }()
+    
     lazy var export : BFRecordExport = {
         let export = BFRecordExport()
         
@@ -43,19 +72,21 @@ class INVideoExportController: BFBaseViewController {
             }
             
             if let fileUrl = url {
-                DispatchQueue.main.async {
+                DispatchQueue.main.async { [weak self] in
                     let item = AVPlayerItem(url: fileUrl)
-                    let avplayer = AVPlayer(playerItem: item)
-                    let playerLayer = AVPlayerLayer(player: avplayer)
-                    playerLayer.frame = CGRect(x: 10, y: strongSelf.progressView.bottomY, width: cScreenWidth - 20, height: cScreenHeigth - strongSelf.progressView.bottomY - 10)
-                    strongSelf.view.layer.addSublayer(playerLayer)
-                    avplayer.play()
+                    self?.avplayer.replaceCurrentItem(with: item)
+                    self?.avplayer.play()
                 }
             }
         }
         return export
     }()
     
+    deinit {
+        avplayerTimeObserver?.invalidate()
+        NotificationCenter.default.removeObserver(self)
+    }
+    
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         showNavigation()
@@ -77,7 +108,30 @@ class INVideoExportController: BFBaseViewController {
         view.addSubview(backV)
         view.addSubview(progressView)
         view.addSubview(progressL)
+        view.addSubview(progreddL)
+        progreddL.snp.makeConstraints { make in
+            make.top.equalTo(progressView.snp.bottom).offset(10)
+            make.centerX.equalTo(progressL)
+            make.width.equalTo(100)
+            make.height.equalTo(20)
+        }
 
+        let playerLayer = AVPlayerLayer(player: avplayer)
+        playerLayer.frame = CGRect(x: 10, y: self.progressView.bottomY, width: cScreenWidth - 20, height: cScreenHeigth - self.progressView.bottomY - 10)
+        view.layer.addSublayer(playerLayer)
+        
         export.startExprot()
+        
+        view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(play)))
+    }
+    
+    @objc func play(){
+        if self.avplayer.currentItem != nil {
+            if self.avplayer.timeControlStatus == .playing {
+                self.avplayer.pause()
+            }else if self.avplayer.timeControlStatus == .paused{
+                self.avplayer.play()
+            }
+        }
     }
 }