Question

我正在构建一个声音测验应用程序，要求用户从多种声音选项中猜测正确的声音。我想知道在声音播放完后是否有任何功能执行动作，例如AVAudioPlayer .isplaying或.stop。

Answer 1

func audioPlayerDidFinishPlaying吗？ https://developer.apple.com/documentation/avfoundation/avaudioplayerdelegate/1389160-audioplayerdidfinishplaying

Answer 2

创建您的AVAudioPlayer

将自己设置为玩家的代表。

实施audioPlayerDidFinishPlaying(_:successfully:)委托方法。声音播放完毕会被调用

请咨询有关AVAudioPlayer，AVAudioPlayerDelegate协议和audioPlayerDidFinishPlaying(_:successfully:)委托方法的文档以了解更多信息。

Answer 3

这就是我想找的

struct Manager
{    
    //Required Objects - AVFoundation
    ///AVAudio Session
    static var recordingSession: AVAudioSession!

    ///AVAudio Recorder
    static var recorder: AVAudioRecorder?

    ///AVAudio Player
    static var player: AVAudioPlayer?
}

播放音乐

//Set player with audio File
do
{
    try Manager.player = AVAudioPlayer.init(contentsOf: returnPathAtSelectedIndex(fileName: fileName))
    //Set required delegates and Values

    Manager.player?.delegate = self
    Manager.player?.volume = 1.0
    Manager.player?.prepareToPlay()
    Manager.player?.play()
}
catch
{
    print("Error while playing music: \(error.localizedDescription)")
}

音频播放器代表

//MARK:- Audio Player Delegates
extension RecordingManager: AVAudioPlayerDelegate
{
    //MARK: Audio Player Finishes Playing audio
    /**
     Called when a sound has finished playing.
     - parameter player: player instance
     - parameter flag: Bool player is running or not successfully
     */
    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool)
    {
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: "StoppedPlaying"), object: nil)
        player.stop()
        Manager.player?.stop()
        Manager.recordingalreadyPlayedStatus = false
        print("Finish Playing")
    }

    //MARK: Audio Player error occur while Playing
    /**
     Called when an audio player encounters a decoding error during playback.
     - parameter player: player instance
     - parameter error: Error if occurs
     */
    func audioPlayerDecodeErrorDidOccur(_ player: AVAudioPlayer,error: Error?)
    {
        print("Encoding Error: \(String(describing: error?.localizedDescription))")
    }

}

快速播放完声音后如何执行功能

3 个答案: