如您所見，我正在流式傳輸音頻廣播。但是當我按下主頁按鈕并退出應用程序時，流媒體播放停止，或者我聽不到聲音。如何繼續(xù)在后臺流式傳輸并從鎖定屏幕收聽？ViewController.Swiftimport UIKitimport AVFoundationimport MediaPlayerimport 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 }
3 回答
慕神8447489
TA貢獻1780條經(jīng)驗 獲得超1個贊
您需要設置應用程序功能后臺模式（音頻和AirPlay），并將AVAudioSession類別設置為AVAudioSessionCategoryPlayback并將其設置為活動狀態(tài)
從Xcode 8.2.1?Swift 3.0.2開始
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, with: .mixWithOthers)
print("Playback OK")
try AVAudioSession.sharedInstance().setActive(true)
print("Session is Active")
} catch {
print(error)
}
Xcode 10?Swift 4.2
do {
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [.mixWithOthers, .allowAirPlay])
print("Playback OK")
try AVAudioSession.sharedInstance().setActive(true)
print("Session is Active")
} catch {
print(error)
}
MMTTMM
TA貢獻1869條經(jīng)驗 獲得超4個贊
Xcode 10.2.1 Swift 4
請在您的AppDelegate中添加以下代碼
func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, mode: AVAudioSessionModeDefault, options: [.mixWithOthers, .allowAirPlay])
print("Playback OK")
try AVAudioSession.sharedInstance().setActive(true)
print("Session is Active")
} catch {
print(error)
}
return true
}
注意：-請根據(jù)需要配置選項。例如在播放視頻文件時停止背景音頻
options: [.allowAirPlay, .defaultToSpeaker]
并且不要忘記在后臺模式下啟用音頻和播放
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