ios - 如何在 iOS 中重复播放一首歌曲？

Question

我正在尝试在我的应用中重复播放一首歌曲。但是，它只是播放到最后，然后完全停止。我如何为此添加循环功能？

这是我在 viewDidLoad 中的代码:

    do
    {
        let audioPath = Bundle.main.path(forResource: "APP4", ofType: "mp3")
        try player = AVAudioPlayer(contentsOf: NSURL(fileURLWithPath: audioPath!) as URL)

    }

    catch

    {

        //catch error
    }

    let session = AVAudioSession.sharedInstance()

    do
    {

        try session.setCategory(AVAudioSessionCategoryPlayback)

    }

    catch
    {

    }
          player.play()

我正在使用 Xcode 8。

Answer 1

使用 AVAudioPlayer 的 numberOfLoops 属性来获取重复功能。

来自Apple doc的讨论部分:

A value of 0, which is the default, means to play the sound once. Set a positive integer value to specify the number of times to return to the start and play again. For example, specifying a value of 1 results in a total of two plays of the sound. Set any negative integer value to loop the sound indefinitely until you call the stop() method.

所以使用:

player.numberOfLoops = n - 1 // here n (positive integer) denotes how many times you want to play the sound

或者，为了利用无限循环使用:

player.numberOfLoops = -1
// But somewhere in your code, you need to stop this

停止播放:

player.stop()