UISelectionFeedbackGenerator() not working on iPhone 7

Question

I would like to use some haptic in my app. I am using the UISelectionFeedbackGenerator but it will not work. I am testing on real iPhone 7 with iOS 10. These two lines should do the magic – but nothing happens:

let generator = UISelectionFeedbackGenerator()
generator.selectionChanged()

Answer 1

It seems as if AVFoundation (or probably just AVCaptureSession) is somehow messing with the haptic feedback! Without AVFoundation, my haptic feedback works. As soon as I put it in there, it stops working.

Answer 2

Here are some alternatives that work on older devices:

import AudioToolbox

AudioServicesPlaySystemSound(1519) // Actuate `Peek` feedback (weak boom)
AudioServicesPlaySystemSound(1520) // Actuate `Pop` feedback (strong boom)
AudioServicesPlaySystemSound(1521) // Actuate `Nope` feedback (series of three weak booms)