Headphones plugin/out detection in Swift

Question

im working on an iphone app for iOS 8.1 that works with core audio to generate frequencies and adjust intensities. In the view controller that i generate the frequencies i n

Answer 1

This article worked for me. There is also a GitHub repo with solution. If you don't want to read, here is my code:

Put this in your INIT method:

    self.session = AVAudioSession.sharedInstance()
    let currentRoute = self.session.currentRoute
    if currentRoute.outputs.count != 0 {
        for description in currentRoute.outputs {
            if description.portType == AVAudioSessionPortHeadphones {
                print("headphone plugged in")
            } else {
                print("headphone pulled out")
            }
        }
    } else {
        print("requires connection to device")
    }

    NSNotificationCenter.defaultCenter().addObserver(
        self,
        selector: #selector(YOUR_VIEW_CONTROLLER_OR_VIEW.audioRouteChangeListener(_:)),
        name: AVAudioSessionRouteChangeNotification,
        object: nil)

And put this anywhere in your class:

 dynamic private func audioRouteChangeListener(notification:NSNotification) {
    let audioRouteChangeReason = notification.userInfo![AVAudioSessionRouteChangeReasonKey] as! UInt

    switch audioRouteChangeReason {
    case AVAudioSessionRouteChangeReason.NewDeviceAvailable.rawValue:
        print("headphone plugged in")
    case AVAudioSessionRouteChangeReason.OldDeviceUnavailable.rawValue:
        print("headphone pulled out")
    default:
        break
    }
}

Take care!