CODEWITHSUNDEEP
swiftavaudiosession
Khoa Le
Khoa Le

Reputation: 95

Type of expression is ambiguous without more context AVAudioSession

I'm trying to add notification observer to detect when headphones are removed and the music stop playing. I followed Audio Session. I'm trying to search Swift 4.2 syntax, changed some things from the original code from Apple but I still get this error:

Type of expression is ambiguous without more context

What am I doing wrong? Let me know if I need to add more code

override func awakeFromNib() {
    super.awakeFromNib()

    NotificationCenter.default.addObserver(self, selector: #selector(audioRouteChanged), name: .AVAudioSession.routeChangeNotification, object: nil)
    //Error this line: Type of expression is ambiguous without more context

}

@objc func audioRouteChanged(notification: Notification) {

    guard let userInfo = notification.userInfo else { return }
    guard let reason = userInfo[AVAudioSessionRouteChangeReasonKey] as? Int else { return }

    if reason == AVAudioSession.RouteChangeReason.oldDeviceUnavailable.hashValue {
        // headphones plugged out
        // continue playback or change the play/pause icon
        playPauseButton.setImage(#imageLiteral(resourceName: "play"), for: .normal)
        miniPlayPauseButton.setImage(#imageLiteral(resourceName: "play"), for: .normal)
    }
}

Upvotes: 0

Views: 529

Answers (1)

inokey
inokey

Reputation: 6170

Remove the dot before AVAudioSession name: .AVAudioSession.routeChangeNotification

Upvotes: 1

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