问题
I am getting mp3 url as a response of api calling. I want to play that audio, so how can i do that? (ios swift)
here is my response
{
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";
}
here is my code::
@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")
}
}
where am i going wrong?
回答1:
I tried the following,
let urlstring = "http://radio.spainmedia.es/wp-content/uploads/2015/12/tailtoddle_lo4.mp3"
let url = NSURL(string: urlstring)
print("the url = \(url!)")
downloadFileFromURL(url!)
Add the below methods,
func downloadFileFromURL(url:NSURL){
var downloadTask:NSURLSessionDownloadTask
downloadTask = NSURLSession.sharedSession().downloadTaskWithURL(url, completionHandler: { [weak self](URL, response, error) -> Void in
self?.play(URL)
})
downloadTask.resume()
}
And your play method as it is,
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")
}
}
Download the mp3 file and then try to play it, somehow AVAudioPlayer does not download your mp3 file for you. I am able to download the audio file and player plays it.
Remember to add this in your info.plist since you are loading from a http source and you need the below to be set for iOS 9+
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
</plist>
回答2:
Use AVPlayer instead of AVAudioPlayer to play remote content. As per documentation AVAudioPlayer needs mp3 file to play Audio. AVAudioPlayer not provide support for streaming.
Try this code , its working fine for me
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")
}
}
Please keep in mind to set App Transport Security(ATS) in info.plist file.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
回答3:
Since AVPlayer is very limited (for example you cannot change url there without regenerate whole AVPlayer I think you should use AVQueuePlayer:
From the docs:
AVQueuePlayer is a subclass of AVPlayer used to play a number of items in sequence. Using this class you can create and manage a queue of player items comprised of local or progressively downloaded file-based media, such as QuickTime movies or MP3 audio files, as well as media served using HTTP Live Streaming.
So in Swift 3 it will work like this:
lazy var playerQueue : AVQueuePlayer = {
return AVQueuePlayer()
}()
...
func playTrackOrPlaylist{
if let url = track.streamURL() { //this is an URL fetch from somewhere. In this if you make sure that URL is valid
let playerItem = AVPlayerItem.init(url: url)
self.playerQueue.insert(playerItem, after: nil)
self.playerQueue.play()
}
}
回答4:
SWIFT 4
1 - import AVFoundation
2 - declare player
var player : AVPlayer?
3 - in ViewDidLoad call function and pass the streaming url like String
loadRadio(radioURL: (radioStation?.streamURL)!)
4 - function to play
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
}
For me is the best and simply way to streaming audio in swift.
回答5:
After some research, and some disappointment since none of the answers solved my problem, I've come to a solution and here's the final result. The accepted answer is half right, you still need to create an AVPlayerLayer
let url = URL(string: "https://www.myinstants.com/media/sounds/cade-o-respeito.mp3" ?? "")
playerItem = AVPlayerItem(url: url!)
player = AVPlayer(playerItem: playerItem)
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = CGRect(x: 0, y: 0, width: 10, height: 10)
self.contentView.layoutSublayers(of: playerLayer)
player?.play()
回答6:
Swift 4
func playSound(soundUrl: String) {
let sound = URL(fileURLWithPath: soundUrl)
do {
let audioPlayer = try AVAudioPlayer(contentsOf: sound)
audioPlayer.prepareToPlay()
audioPlayer.play()
}catch let error {
print("Error: \(error.localizedDescription)")
}
}
回答7:
To play a sound in swift2 is
func playSound(soundUrl: String)
{
let sound = NSURL(soundUrl)
do{
let audioPlayer = try AVAudioPlayer(contentsOfURL: sound)
audioPlayer.prepareToPlay()
audioPlayer.play()
}catch {
print("Error..")
}
}
Let me know if it working.
来源：https://stackoverflow.com/questions/34563329/how-to-play-mp3-audio-from-url-in-ios-swift