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如何在ios swift中播放URL中的mp3音频
EN

Stack Overflow用户
提问于 2016-01-02 14:37:58
回答 7查看 78.3K关注 0票数 32

我正在获取mp3 url作为api调用的响应。我想播放那段音频,那么我该怎么做呢?(ios swift)

这是我的回应

代码语言:javascript
复制
 {
    content = "En este primer programa se tratar\U00e1n asuntos tan importante como este y aquel sin descuidar un poco de todo lo dem\U00e1s";
    file = "http://radio.spainmedia.es/wp-content/uploads/2015/12/ogilvy.mp3";
    image = "http://radio.spainmedia.es/wp-content/uploads/2015/12/tapas.jpg";
    number = 0001;
    subtitle = Titulareando;
    title = "Tapa 1";
}

以下是我的代码::

代码语言:javascript
复制
 @IBAction func btnplayaudio(sender: AnyObject) {
    let urlstring = "http://radio.spainmedia.es/wp-content/uploads/2015/12/tailtoddle_lo4.mp3"
    let url = NSURL(string: urlstring)
    print("the url = \(url!)")

    play(url!)

}

func play(url:NSURL) {
    print("playing \(url)")

    do {
        self.player = try AVAudioPlayer(contentsOfURL: url)
        player.prepareToPlay()
        player.volume = 1.0
        player.play()
    } catch let error as NSError {
        self.player = nil
        print(error.localizedDescription)
    } catch {
        print("AVAudioPlayer init failed")
    }

}

我哪里错了?

EN

回答 7

Stack Overflow用户

发布于 2016-01-02 15:09:35

使用AVPlayer而不是AVAudioPlayer播放远程内容。根据文档,AVAudioPlayer需要mp3文件来播放音频。AVAudioPlayer不提供对streaming的支持。

试试这段代码,它对我来说工作得很好。

代码语言:javascript
复制
func play(url:NSURL) {
    print("playing \(url)")

    do {

        let playerItem = AVPlayerItem(URL: url)

        self.player = try AVPlayer(playerItem:playerItem)
        player!.volume = 1.0
        player!.play()
    } catch let error as NSError {
        self.player = nil
        print(error.localizedDescription)
    } catch {
        print("AVAudioPlayer init failed")
    }
}

请记住在info.plist文件中设置应用传输安全(ATS)。

代码语言:javascript
复制
<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>
票数 40
EN

Stack Overflow用户

发布于 2020-10-22 19:46:05

创建一个完整的音频播放器与进度条和其他东西... swift 5Xcode 12.1

代码语言:javascript
复制
var player: AVPlayer?
var playerItem:AVPlayerItem?
fileprivate let seekDuration: Float64 = 10


@IBOutlet weak var labelOverallDuration: UILabel!
@IBOutlet weak var labelCurrentTime: UILabel!
@IBOutlet weak var playbackSlider: UISlider!
@IBOutlet weak var ButtonPlay: UIButton!

//call this mehtod to init audio player 
func initAudioPlayer{
    let url = URL(string: "https://argaamplus.s3.amazonaws.com/eb2fa654-bcf9-41de-829c-4d47c5648352.mp3")
    let playerItem:AVPlayerItem = AVPlayerItem(url: url!)
    player = AVPlayer(playerItem: playerItem)
    
    playbackSlider.minimumValue = 0
    
    //To get overAll duration of the audio
    let duration : CMTime = playerItem.asset.duration
    let seconds : Float64 = CMTimeGetSeconds(duration)
    labelOverallDuration.text = self.stringFromTimeInterval(interval: seconds)
    
    //To get the current duration of the audio
    let currentDuration : CMTime = playerItem.currentTime()
    let currentSeconds : Float64 = CMTimeGetSeconds(currentDuration)
    labelCurrentTime.text = self.stringFromTimeInterval(interval: currentSeconds)
    
    playbackSlider.maximumValue = Float(seconds)
    playbackSlider.isContinuous = true
    
    
    
    player!.addPeriodicTimeObserver(forInterval: CMTimeMakeWithSeconds(1, preferredTimescale: 1), queue: DispatchQueue.main) { (CMTime) -> Void in
        if self.player!.currentItem?.status == .readyToPlay {
            let time : Float64 = CMTimeGetSeconds(self.player!.currentTime());
            self.playbackSlider.value = Float ( time );
            self.labelCurrentTime.text = self.stringFromTimeInterval(interval: time)
        }
        let playbackLikelyToKeepUp = self.player?.currentItem?.isPlaybackLikelyToKeepUp
        if playbackLikelyToKeepUp == false{
            print("IsBuffering")
            self.ButtonPlay.isHidden = true
            //        self.loadingView.isHidden = false
        } else {
            //stop the activity indicator
            print("Buffering completed")
            self.ButtonPlay.isHidden = false
            //        self.loadingView.isHidden = true
        }
    }
   
   //change the progress value
    playbackSlider.addTarget(self, action: #selector(playbackSliderValueChanged(_:)), for: .valueChanged)
    
    //check player has completed playing audio
    NotificationCenter.default.addObserver(self, selector: #selector(self.finishedPlaying(_:)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: playerItem)}


@objc func playbackSliderValueChanged(_ playbackSlider:UISlider) {
    let seconds : Int64 = Int64(playbackSlider.value)
    let targetTime:CMTime = CMTimeMake(value: seconds, timescale: 1)
    player!.seek(to: targetTime)
    if player!.rate == 0 {
        player?.play()
    }
}

@objc func finishedPlaying( _ myNotification:NSNotification) {
    ButtonPlay.setImage(UIImage(named: "play"), for: UIControl.State.normal)
    //reset player when finish   
    playbackSlider.value = 0
    let targetTime:CMTime = CMTimeMake(value: 0, timescale: 1)
    player!.seek(to: targetTime)
}

@IBAction func playButton(_ sender: Any) {
    print("play Button")
    if player?.rate == 0
    {
        player!.play()
        self.ButtonPlay.isHidden = true
        //        self.loadingView.isHidden = false
        ButtonPlay.setImage(UIImage(systemName: "pause"), for: UIControl.State.normal)
    } else {
        player!.pause()
        ButtonPlay.setImage(UIImage(systemName: "play"), for: UIControl.State.normal)
    }
    
}


func stringFromTimeInterval(interval: TimeInterval) -> String {
    let interval = Int(interval)
    let seconds = interval % 60
    let minutes = (interval / 60) % 60
    let hours = (interval / 3600)
    return String(format: "%02d:%02d:%02d", hours, minutes, seconds)
}



@IBAction func seekBackWards(_ sender: Any) {
    if player == nil { return }
    let playerCurrenTime = CMTimeGetSeconds(player!.currentTime())
    var newTime = playerCurrenTime - seekDuration
    if newTime < 0 { newTime = 0 }
    player?.pause()
    let selectedTime: CMTime = CMTimeMake(value: Int64(newTime * 1000 as Float64), timescale: 1000)
    player?.seek(to: selectedTime)
    player?.play()

}


@IBAction func seekForward(_ sender: Any) {
    if player == nil { return }
    if let duration = player!.currentItem?.duration {
       let playerCurrentTime = CMTimeGetSeconds(player!.currentTime())
       let newTime = playerCurrentTime + seekDuration
       if newTime < CMTimeGetSeconds(duration)
       {
          let selectedTime: CMTime = CMTimeMake(value: Int64(newTime * 1000 as 
       Float64), timescale: 1000)
          player!.seek(to: selectedTime)
       }
       player?.pause()
       player?.play()
      }
}

最终结果是这样的.

票数 11
EN

Stack Overflow用户

发布于 2018-06-22 23:44:19

SWIFT 4

1- import AVFoundation

2-声明播放器

代码语言:javascript
复制
var player : AVPlayer?

3-在ViewDidLoad中调用函数并像字符串一样传递流url

代码语言:javascript
复制
loadRadio(radioURL: (radioStation?.streamURL)!)

4-要播放的函数

代码语言:javascript
复制
func loadRadio(radioURL: String) {

        guard let url = URL.init(string: radioURL) else { return }
        let playerItem = AVPlayerItem.init(url: url)
        player = AVPlayer.init(playerItem: playerItem)
        player?.play()
        startNowPlayingAnimation(true)
        played = true
    }

对我来说,这是最好也是最简单的在swift中播放音频的方法。

票数 10
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/34563329

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