Question

使用Swift 2如何创建要在集合视图上使用的音频文件数组？

共有4个选项＆＃34; Ocean＆＃34;，＆＃34; Birds＆＃34;，＆＃34; Nature＆＃34;，＆＃34; Waves＆＃34;它们显示为单元格。

单击一个单元格时，我需要它来播放声音。你能帮忙吗？

    var imageArray = [UIImage(named: "ocean"),UIImage(named: "birds"),UIImage(named: "nature"),UIImage(named: "wave")]
var nameArray = ["Ocean","Birds","Nature","Waves"]



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

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! homeCollectionViewCell

    cell.iconImage?.image = imageArray[indexPath.item!]
    cell.label.text = nameArray[indexPath.item!]

    return cell
}

Answer 1

你知道如何播放声音吗？你做完了吗？如果是这样，您需要使用以下函数并执行以下操作：

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
        //grab the sound from the array
        let sound = your_array_with_sounds[indexPath.row]

        //if you want to play the sound in this view:
           <code to play the sound>          
        //if you want to play the sound in another view:
           <perform the segue and pass the sound to the view you want>
    }

我希望这有帮助。如果没有，请在您的问题中添加更多信息，我们会帮助您。

Answer 2

您需要使用AVAudioPlayer类播放音频为此，您需要导入以下类

导入AVFoundation

您需要使用以下代码

创建函数

let audioName:String!


func playAudio(){
    let url = NSURL.fileURLWithPath(
                NSBundle.mainBundle().pathForResource(audioName, 
                ofType: "mp3")!)

        var error: NSError?

        audioPlayer = AVAudioPlayer(contentsOfURL: url, error: &error)

        if let err = error {
            println("audioPlayer error \(err.localizedDescription)")
        } else {
            audioPlayer?.delegate = self
            audioPlayer?.prepareToPlay()
        }
      if let player = audioPlayer {
               player.play()
       }
}

集合视图中的

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) 
{
          audioName = arrayName[indexPath.row]
}

Swift 4.0

let audioName:String!
func playAudio(){
    let url = NSURL.fileURL(
        withPath: Bundle.main.path(forResource: audioName,
                                              ofType: "mp3")!)
    var error: NSError?

    let audioPlayer = try? AVAudioPlayer(contentsOf: url)
    audioPlayer?.delegate = self
    audioPlayer?.prepareToPlay()

    if let player = audioPlayer {
        player.play()
    }
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) 
{
          audioName = arrayName[indexPath.row]
}

Swift：音频文件数组

2 个答案: