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 3.1

let audioSession = AVAudioSession.sharedInstance()
var volume: Float?
do {
    try audioSession.setActive(true)
    volume = audioSession.outputVolume
} catch {
    print("Error Setting Up Audio Session")
}

audioSession.setActive(true) - important

Answer 2

For Swift 2:

let volume = AVAudioSession.sharedInstance().outputVolume   
print("Output volume: \(volume)")