How to Play Audio im Hintergrund schnell?

Question

Wie Sie sehen, streame ich eine Audioübertragung. Aber wenn ich die Home-Taste drücke und die App auslasse, hört das Streaming auf oder ich kann es nicht hören. Wie kann ich im Hintergrund weiter streamen und es vom Sperrbildschirm abhören?

ViewController.Swift

import UIKit 
import AVFoundation 
import MediaPlayer 
import GoogleMobileAds 


    class ViewController: UIViewController, GADInterstitialDelegate { 

     @IBOutlet weak var exitMapButton: UIButton! 
     @IBOutlet weak var radarMap: UIWebView! 
     var interstitial: GADInterstitial! 
     func createAndLoadInterstitial() -> GADInterstitial { 
      var interstitial = GADInterstitial(adUnitID: "ca-app-pub-5378899862041789/2782958552") 
      interstitial.delegate = self 
      interstitial.loadRequest(GADRequest()) 
      return interstitial 
     } 

     func getAd(){ 
      if (self.interstitial.isReady) 
      { 
       self.interstitial.presentFromRootViewController(self) 
       self.interstitial = self.createAndLoadInterstitial() 
      } 
     } 
     @IBOutlet weak var ataturkButton: UIButton! 
     @IBOutlet weak var sabihaButton: UIButton! 
     @IBOutlet weak var esenbogaButton: UIButton! 
     @IBOutlet weak var weatherButton: UIButton! 
     @IBOutlet weak var statusLabel: UILabel! 
     @IBOutlet weak var playButton: UIButton! 
     @IBOutlet weak var webViewButton: UIButton! 
     var googleBannerView: GADBannerView! 
override func viewDidLoad() { 
      super.viewDidLoad() 
     } 
class PlayerAv { 
      var audioLink: String? 
      var player: AVPlayer 
      init(link: String) { 
       self.audioLink = link 
       self.player = AVPlayer(URL: NSURL(string: link)) 
      } 
     } 
     var myPlayer = PlayerAv(link: "http://www.liveatc.net/play/ltba.pls") 
     var setTowerState = "" 

     @IBAction func sliderValueChanged(sender: UISlider) { 
      var currentValue = Float(sender.value) 
      println(currentValue) 
      myPlayer.player.volume = currentValue 
     } 
     @IBAction func getWeatherWindow(sender: AnyObject) { 
      UIApplication.sharedApplication().openURL(NSURL(string: "http://www.aviationweather.gov/adds/metars/?station_ids=ltac&std_trans=standard&chk_metars=on&hoursStr=most+recent+only&chk_tafs=on&submitmet=Submit")!) 
      println("Directed to weather page") 
     } 
     @IBAction func changeToAtaturk() { 
      myPlayer.player.pause() 
      myPlayer = PlayerAv(link: "http://www.liveatc.net/play/ltba.pls") 
      myPlayer.audioLink == "" 
      println("\(myPlayer.audioLink!)--a") 
      playButton.setTitle("Pause", forState: UIControlState.Normal) 
      myPlayer.player.play() 
      setTowerState = "ataturk" 
      statusLabel.text = "Status: Playing, LTBA" 
     } 
     @IBAction func changeToEsenboga() { 
      myPlayer.player.pause() 
      myPlayer = PlayerAv(link: "http://www.liveatc.net/play/ltac.pls") 
      println("\(myPlayer.audioLink!)--a") 
      playButton.setTitle("Pause", forState: UIControlState.Normal) 
      myPlayer.player.play() 
      setTowerState = "esenboga" 
      statusLabel.text = "Status: Playing, LTAC" 
     } 
     @IBAction func changeToSabiha() { 
      myPlayer.player.pause() 
      myPlayer = PlayerAv(link: "http://www.liveatc.net/play/ltfj.pls") 
      println("\(myPlayer.audioLink!)--a") 
      playButton.setTitle("Pause", forState: UIControlState.Normal) 
      myPlayer.player.play() 
      setTowerState = "sabiha" 
      statusLabel.text = "Status: Playing, LTFJ" 
     } 
     override func didReceiveMemoryWarning() { 
      super.didReceiveMemoryWarning() 
      // Dispose of any resources that can be recreated. 
     } 
     @IBAction func playButtonPressed(sender: AnyObject) { 
      toggle() 
     } 
     func toggle() { 
      if playButton.titleLabel?.text == "Play" { 
       playRadio() 
       println("Playing") 
       statusLabel.text = "Status: Playing" 
      } else { 
       pauseRadio() 
       println("Paused") 
       statusLabel.text = "Status: Paused" 
      } 
     } 
     func playRadio() { 
      myPlayer.player.play() 
      playButton.setTitle("Pause", forState: UIControlState.Normal) 
     } 
     func pauseRadio() { 
      myPlayer.player.pause() 
      playButton.setTitle("Play", forState: UIControlState.Normal) 
     } 
    } 

Answer 1

Sie benötigen App Capabilities Background-Modi (Audio und AirPlay) gesetzt und stellen Sie Ihre AVAudioSession Kategorie AVAudioSessionCategoryPlayback und setzen sie aktiv

Von Xcode 8.2.1 • Swift 3.0.2 ab

do { 
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, with: .mixWithOthers) 
    print("Playback OK") 
    try AVAudioSession.sharedInstance().setActive(true) 
    print("Session is Active") 
} catch { 
    print(error) 
}