How to play audio in background with Swift?

Solution 1:

You need to set your app Capabilities Background Modes (Audio and AirPlay) and set your AVAudioSession category to AVAudioSessionCategoryPlayback and set it active

From Xcode 11.4 • Swift 5.2

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)
}

Solution 2:

Xcode 10.2.1 Swift 4

Please add the following code in your AppDelegate

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
    }

Note: - Please configure options as required. E.g to stop a background audio while a video file being played add

 options: [.allowAirPlay, .defaultToSpeaker]

And don't forget to enable audio and airplay in Background mode

Solution 3:

Only paste on the viewDidload

    let path = Bundle.main.path(forResource:"Bismallah", ofType: "mp3")

    do{
        try playerr = AVAudioPlayer(contentsOf: URL(fileURLWithPath: path!))
    } catch {
        print("File is not Loaded")
    }
    let session = AVAudioSession.sharedInstance()
    do{
        try session.setCategory(AVAudioSessionCategoryPlayback)
    }
    catch{
    }

    player.play()

Solution 4:

Swift 5 Xcode 11.2.1

Add this code where you have initialized the AudioPlayer.

audioPlayer.delegate = self
audioPlayer.prepareToPlay()
let audioSession = AVAudioSession.sharedInstance()
do{
    try audioSession.setCategory(AVAudioSession.Category.playback)
}
catch{
    fatalError("playback failed")
}