当从 uitableviewcell 按下 UIButton 时,如果有任何一个从其他单元格播放,则停止其他声音

Stop Others Sound if any one playing from other cells when UIButton is press from uitableviewcell

当我按下 UIButton 时,音乐开始播放。当我再次按下按钮时,音乐将停止。在播放音乐期间,如果我按下另一个单元格按钮,则两种音乐都会播放。我不明白如何停止从其他单元播放的音乐,或者换句话说,一次只播放一个音乐实例。还有一个按钮图像动画自动设置为默认状态,如 sender.selected = false

谁能告诉我该怎么做?

谢谢

UIButton connected with CollectionViewCell Class

Default image State And when i pressed on button on different cells each cell play music and and change its image state to play

class RadioCollectionViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {

    let reuseIdentifier = "cell" 

    var objects = [
        ["url" : "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3", "image": "1.jpg"],
        ["url" : "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3", "image": "2.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/02%20-%20Kheech%20Meri%20Photo%20-%20DownloadMing.SE.mp3", "image": "3.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/03%20-%20Bewajah%20-%20DownloadMing.SE.mp3", "image": "4.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/04%20-%20Tera%20Chehra%20-%20DownloadMing.SE.mp3", "image": "5.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/02%20-%20Kheech%20Meri%20Photo%20-%20DownloadMing.SE.mp3", "image": "6.jpg"],
        ["url" : "http://media.downloadming.se/TEMP/Loveshhuda%20(2015)/01%20-%20Mar%20Jaayen%20-%20DownloadMing.SE.mp3", "image": "5.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/01%20-%20Sanam%20Teri%20Kasam%20-%20DownloadMing.SE.mp3", "image": "7.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/02%20-%20Kheech%20Meri%20Photo%20-%20DownloadMing.SE.mp3", "image": "1.jpg"]]

    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.objects.count
    }

    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! RadioCollectionViewCell

        let object = objects[indexPath.row]
        cell.url = object["url"]! 
        cell.img.image = UIImage(named: object["image"]!)
        return cell
    }
}

在我的UICollectionViewCellClass

class RadioCollectionViewCell: UICollectionViewCell {

    @IBOutlet weak var img: UIImageView!

    var url : String!

    var playerItem:AVPlayerItem?
    var player:AVPlayer?

    @IBAction func audioControlButtonAction(sender: UIButton) {

        let nurl = NSURL(string: "\(url)")!
        playerItem = AVPlayerItem(URL: nurl)
        player=AVPlayer(playerItem: playerItem!)

        if sender.selected == false {

            player!.play()
            sender.selected = true

        }else

        {
            player?.pause()
            sender.selected = false
        }   
    }
}

不要每次都检查是否播放音频。只需调用 player.pause() 然后使用 player.play()

开始播放音频

不要在 RadioCollectionViewCell 中初始化播放器,它会创建您的播放器的多个实例。因此,仅在 viewDidLoad 中初始化 viewcontroller 中的播放器一次,并使用同一播放器播放来自不同单元格的不同 url 的音乐。所以你的单元格应该只有 URl(不同的 url 用于不同的音乐)并实现 didSelectItemAtIndexPath 方法并将 url 传递给普通播放器从这个方法开始,从这个方法开始。

根据评论更新:

例如,

   func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath){

var cell : UICollectionViewCell = collectionView.cellForItemAtIndexPath(indexPath)!
cell.backgroundColor = UIColor.magentaColor()
 }

在这里你可以用url初始化播放器。选择单元格时调用此方法。所以在单元格的点击上初始化播放器,如果你有 array of url 那么你可以通过 indexPath 获得特定的 url。所以初始化播放器并从这个方法播放。

编辑:

如果您在单元格中使用按钮播放和暂停,则不要执行上述代码。

我发现您正在 IBaction 中创建新播放器。使用同一个播放器。您可以使用一个声明为 publicly 的标准播放器。不要在 ibaction 中创建新的。获取 avplayer 的 public 实例并使用相同的实例来播放音乐。而已。 希望这会有所帮助:)

尝试将速率默认设置为 0.0,并仅在播放时分配 1.0。

@IBAction func audioControlButtonAction(sender: UIButton) {

    let nurl = NSURL(string: "\(url)")!
    playerItem = AVPlayerItem(URL: nurl)
    player=AVPlayer(playerItem: playerItem!)
    player.rate = 0.0
    if sender.selected == false {
        player.rate = 1.0
        player!.play()
        sender.selected = true
    }else{
        player?.pause()
        sender.selected = false
    }   
}

或者你可以在didSelect方法中设置rate默认为0.0,然后只在播放声音文件时赋值1.0。

希望这有效!