質問編集履歴

修正・追加

2017/02/23 00:29

投稿

Nefytus

スコア12

title CHANGED Viewed

File without changes

body CHANGED Viewed

@@ -39,5 +39,172 @@
     }
 ```
+教えていただいたように一番下の部分に追加したところ、19個用意した音声ファイルが複数回選択され、全部で189個のキューが自動で設定されるようになりました。
+これについては、for文の部分で回数の設定などを行うことで19個のキューにすることができるのでしょうか？
+```Swift
+class PlayerViewController: UIViewController, UICollectionViewDataSource {
+    static let assetKeysRequiredToPlay = [
+        "playable",
+        "hasProtectedContent"
+    ]
+    let player = AVQueuePlayer()
+    var currentTime: Double {
+        get {
+            return CMTimeGetSeconds(player.currentTime())
+        }
+        set {
+            let newTime = CMTimeMakeWithSeconds(newValue, 1)
+            player.seek(to: newTime, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero)
+        }
+    }
+    var duration: Double {
+        guard let currentItem = player.currentItem else { return 0.0 }
+        return CMTimeGetSeconds(currentItem.duration)
+    }
+    var rate: Float {
+        get {
+            return player.rate
+        }
+        set {
+            player.rate = newValue
+        }
+    }
+    var playerLayer: AVPlayerLayer? {
+        return playerView.playerLayer
+    }
+    /*
+        A formatter for individual date components used to provide an appropriate
+        value for the `startTimeLabel` and `durationLabel`.
+    */
+    let timeRemainingFormatter: DateComponentsFormatter = {
+        let formatter = DateComponentsFormatter()
+        formatter.zeroFormattingBehavior = .pad
+        formatter.allowedUnits = [.minute, .second]
+        return formatter
+    }()
+    var timeObserverToken: Any?
+    var assetTitlesAndThumbnails: [URL: (title: String, thumbnail: UIImage)] = [:]
+    var loadedAssets = [String: AVURLAsset]()
+    @IBOutlet weak var timeSlider: UISlider!
+    @IBOutlet weak var startTimeLabel: UILabel!
+    @IBOutlet weak var durationLabel: UILabel!
+    @IBOutlet weak var rewindButton: UIButton!
+    @IBOutlet weak var playPauseButton: UIButton!
+    @IBOutlet weak var fastForwardButton: UIButton!
+    @IBOutlet weak var clearButton: UIButton!
+    @IBOutlet weak var collectionView: UICollectionView!
+    @IBOutlet weak var queueLabel: UILabel!
+    @IBOutlet weak var playerView: PlayerView!
+	override func viewWillAppear(_ animated: Bool) {
+		super.viewWillAppear(animated)
+		addObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem.duration), options: [.new, .initial], context: &playerViewControllerKVOContext)
+		addObserver(self, forKeyPath: #keyPath(PlayerViewController.player.rate), options: [.new, .initial], context: &playerViewControllerKVOContext)
+		addObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem.status), options: [.new, .initial], context: &playerViewControllerKVOContext)
+		addObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem), options: [.new, .initial], context: &playerViewControllerKVOContext)
+        playerView.playerLayer.player = player
+        let manifestURL = Bundle.main.url(forResource: "MediaManifest", withExtension: "json")!
+        asynchronouslyLoadURLAssetsWithManifestURL(jsonURL: manifestURL)
+        let interval = CMTimeMake(1, 1)
+        timeObserverToken = player.addPeriodicTimeObserver(forInterval: interval, queue: DispatchQueue.main) { [unowned self] time in
+            let timeElapsed = Float(CMTimeGetSeconds(time))
+            self.timeSlider.value = Float(timeElapsed)
+            self.startTimeLabel.text = self.createTimeString(time: timeElapsed)
+        }
+	}
+	override func viewDidDisappear(_ animated: Bool) {
+		super.viewDidDisappear(animated)
+        if let timeObserverToken = timeObserverToken {
+            player.removeTimeObserver(timeObserverToken)
+            self.timeObserverToken = nil
+        }
+		player.pause()
+		removeObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem.duration), context: &playerViewControllerKVOContext)
+        removeObserver(self, forKeyPath: #keyPath(PlayerViewController.player.rate), context: &playerViewControllerKVOContext)
+        removeObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem.status), context: &playerViewControllerKVOContext)
+        removeObserver(self, forKeyPath: #keyPath(PlayerViewController.player.currentItem), context: &playerViewControllerKVOContext)
+	}
+    func asynchronouslyLoadURLAsset(asset: AVURLAsset, title: String, thumbnailResourceName: String) {
+        asset.loadValuesAsynchronously(forKeys: PlayerViewController.assetKeysRequiredToPlay) {
+            DispatchQueue.main.async() {
+                for key in PlayerViewController.assetKeysRequiredToPlay {
+                    var error: NSError?
+					if asset.statusOfValue(forKey: key, error: &error) == .failed {
+                        let stringFormat = NSLocalizedString("error.asset_%@_key_%@_failed.description", comment: "Can't use this AVAsset because one of it's keys failed to load")
+                        let message = String.localizedStringWithFormat(stringFormat, title, key)
+                        self.handleError(with: message, error: error)
+                        return
+                    }
+                }
+                if !asset.isPlayable || asset.hasProtectedContent {
+                    let stringFormat = NSLocalizedString("error.asset_%@_not_playable.description", comment: "Can't use this AVAsset because it isn't playable or has protected content")
+                    let message = String.localizedStringWithFormat(stringFormat, title)
+                    self.handleError(with: message)
+                    return
+                }
+                self.loadedAssets[title] = asset
+                let name = (thumbnailResourceName as NSString).deletingPathExtension
+                let type = (thumbnailResourceName as NSString).pathExtension
+                let path = Bundle.main.path(forResource: name, ofType: type)!
+                let thumbnail = UIImage(contentsOfFile: path)!
+                self.assetTitlesAndThumbnails[asset.url] = (title, thumbnail)
+                for (loadedAssetTitle, loadedAsset) in self.loadedAssets {
+                    let newPlayerItem = AVPlayerItem(asset: loadedAsset)
+                    self.player.insert(newPlayerItem, after: nil)
+                }
+            }
+        }
+    }
+```
 よろしくお願いいたします。

53 530 698

修正

2017/02/23 00:29

投稿

Nefytus

スコア12

title CHANGED Viewed

File without changes

body CHANGED Viewed

@@ -4,4 +4,40 @@
 ここでお尋ねしたいのが、addItemというボタンを使用せずに、アプリを起動した時点ですでにアプリ内に用意された全ての音声ファイルがキューにセットされている状態にする方法です。
 アプリ起動後、再生ボタンを押すとセットされた音声ファイルが再生されるようにしたいです。
+以下にある、addItemのボタンの機能を参考にするのかと考えていますが、自動で全音声ファイルをキューに加える方法が分からず、質問させていただきました。
+```Swift
+@IBAction func addItemToQueueButtonPressed(_ sender: UIButton) {
+        let alertTitle = NSLocalizedString("popover.title.addItem", comment: "Title of popover that adds items to the queue")
+        let alertMessage = NSLocalizedString("popover.message.addItem", comment: "Message on popover that adds items to the queue")
+        let alertController = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: .actionSheet)
+        // Populate the sheet with the titles of the assets we have loaded.
+        for (loadedAssetTitle, loadedAsset) in loadedAssets {
+            let alertAction = UIAlertAction(title:loadedAssetTitle, style: .default) { [unowned self] alertAction in
+                let oldItems = self.player.items()
+                let newPlayerItem = AVPlayerItem(asset: loadedAsset)
+                self.player.insert(newPlayerItem, after: nil)
+                self.queueDidChangeWithOldPlayerItems(oldPlayerItems: oldItems, newPlayerItems: self.player.items())
+            }
+            alertController.addAction(alertAction)
+        }
+        let cancelActionTitle = NSLocalizedString("popover.title.cancel", comment: "Title of popover cancel action")
+        let cancelAction = UIAlertAction(title: cancelActionTitle, style: .cancel, handler: nil)
+        alertController.addAction(cancelAction)
+        presentModalPopoverAlertController(alertController: alertController, sender: sender)
+    }
+```
 よろしくお願いいたします。

53 530 698