update chapter 16 examples so they compile

bk2ch16p678mediaQuery/ch29p946mediaQuery/ViewController.swift

@@ -57,19 +57,19 @@ class ViewController: UIViewController {
         let r = UIGraphicsImageRenderer(size:sz)
         let im1 = r.image {
             _ in
-            UIColor.black().setFill()
+            UIColor.black.setFill()
             UIBezierPath(ovalIn:
                 CGRect(0,0,sz.height,sz.height)).fill()
         }
         let im2 = r.image {
             _ in
-            UIColor.red().setFill()
+            UIColor.red.setFill()
             UIBezierPath(ovalIn:
                 CGRect(0,0,sz.height,sz.height)).fill()
         }
         let im3 = r.image {
             _ in
-            UIColor.orange().setFill()
+            UIColor.orange.setFill()
             UIBezierPath(ovalIn:
                 CGRect(0,0,sz.height,sz.height)).fill()
         }
@@ -224,7 +224,7 @@ class ViewController: UIViewController {
         }
         self.label.text = ""
         let player = MPMusicPlayerController.applicationMusicPlayer()
-        guard n.object === player else { return } // just playing safe
+        guard (n.object as AnyObject) === player else { return } // just playing safe
         guard let title = player.nowPlayingItem?.title else {return}
         let ix = player.indexOfNowPlayingItem
         guard ix != NSNotFound else {return}
@@ -233,7 +233,7 @@ class ViewController: UIViewController {
 
     func timerFired(_: Any) {
         let player = MPMusicPlayerController.applicationMusicPlayer()
-        guard let item = player.nowPlayingItem where player.playbackState != .stopped else {
+        guard let item = player.nowPlayingItem, player.playbackState != .stopped else {
             self.prog.isHidden = true
             return
         } //

bk2ch16p687AVQueuePlayer/ch29p952AVQueuePlayer/ViewController.swift

@@ -56,7 +56,7 @@ class ViewController: UIViewController {
     var avplayer : AVPlayer!
     var qp : AVQueuePlayer!
     var items = [AVPlayerItem]()
-    var ob : AnyObject!
+    var ob : Any!
     @IBOutlet var prog : UIProgressView!
     @IBOutlet var label : UILabel!
 
@@ -185,7 +185,7 @@ class ViewController: UIViewController {
 
     }
 
-    override func observeValue(forKeyPath keyPath: String?, of object: AnyObject?, change: [NSKeyValueChangeKey : AnyObject]?, context: UnsafeMutablePointer<Void>?) {
+    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
         if keyPath == #keyPath(AVQueuePlayer.currentItem) {
             self.changed()
         }
@@ -243,37 +243,37 @@ class ViewController: UIViewController {
 
     // ======== respond to remote controls
 
-    override func canBecomeFirstResponder() -> Bool {
-        return true
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        let scc = MPRemoteCommandCenter.shared()
+        scc.togglePlayPauseCommand.addTarget(self, action: #selector(doPlayPause))
+        scc.playCommand.addTarget(self, action:#selector(doPlay))
+        scc.pauseCommand.addTarget(self, action:#selector(doPause))
     }
-    
-    override func viewDidAppear(_ animated: Bool) {
-        super.viewDidAppear(animated)
-        self.becomeFirstResponder()
-        UIApplication.shared.beginReceivingRemoteControlEvents()
+
+    func doPlayPause(_ event:MPRemoteCommandEvent) {
+        print("playpause")
+        let p = self.player.player!
+        if p.isPlaying { p.pause() } else { p.play() }
     }
-
-    override func remoteControlReceived(with event: UIEvent?) {
-        let rc = event!.subtype
-        print("received remote control \(rc.rawValue)")
-
-        let p = self.curplayer!
-        switch rc {
-        case .remoteControlTogglePlayPause:
-            if p.playing { p.pause() } else { p.doPlay() }
-        case .remoteControlPlay:
-            p.doPlay()
-        case .remoteControlPause:
-            p.pause()
-        case .remoteControlNextTrack:
-            if let p = p as? AVQueuePlayer {
-                p.advanceToNextItem()
-            }
-        default:break
-        }
-
+    func doPlay(_ event:MPRemoteCommandEvent) {
+        print("play")
+        let p = self.player.player!
+        p.play()
     }
-
-
-
+    func doPause(_ event:MPRemoteCommandEvent) {
+        print("pause")
+        let p = self.player.player!
+        p.pause()
+    }
+
+    deinit {
+        let scc = MPRemoteCommandCenter.shared()
+        scc.togglePlayPauseCommand.removeTarget(self)
+        scc.playCommand.removeTarget(self)
+        scc.pauseCommand.removeTarget(self)
+    }
+
+
+
 }