Get System Volume iOS

Question

My case is simple: I need to play a warning signal and want to make sure the user will hear it, so I want to check the system volume.

How can I find out what the cur

Answer 1

Swift 2.2, make sure to import MediaPlayer

private func setupVolumeListener()
{
    let frameView:CGRect = CGRectMake(0, 0, 0, 0)
    let volumeView = MPVolumeView(frame: frameView)
    //self.window?.addSubview(volumeView) //use in app delegate
   self.view.addSubview(volumeView)  //use in a view controller


    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(volumeChanged(_:)), name: "AVSystemController_SystemVolumeDidChangeNotification", object: nil)
}//eom



func volumeChanged(notification:NSNotification)
{
    let volume = notification.userInfo!["AVSystemController_AudioVolumeNotificationParameter"]
    let category = notification.userInfo!["AVSystemController_AudioCategoryNotificationParameter"]
    let reason = notification.userInfo!["AVSystemController_AudioVolumeChangeReasonNotificationParameter"]

    print("volume:      \(volume!)")
    print("category:    \(category!)")
    print("reason:      \(reason!)")
    print("\n")
}//eom