How to check if Haptic Engine (UIFeedbackGenerator) is supported

Question

I am wondering how we could check if the new iOS 10 API UIFeebackGenerator is available on the current device. There are some more things we would need to check

Answer 1

This will work for iPhone 7 and Above.

 var count = 0

 override func viewDidLoad() {
    super.viewDidLoad()

    let myButton = UIButton(frame: CGRect(x: 0, y: 100, width: 100, height: 50))
    myButton.setTitleColor(UIColor.green, for: .normal)
    myButton.setTitle("Press ME", for: .normal)
    myButton.addTarget(self, action: #selector(myButtonTapped), for: .touchUpInside)
    self.view.addSubview(myButton)

}

@objc func myButtonTapped() {
    count += 1
    print("Count \(count)")

    switch count {
    case 1:
        let generator = UINotificationFeedbackGenerator()
        generator.notificationOccurred(.error)

    case 2:
        let generator = UINotificationFeedbackGenerator()
        generator.notificationOccurred(.success)

    case 3:
        let generator = UINotificationFeedbackGenerator()
        generator.notificationOccurred(.warning)

    case 4:
        let generator = UIImpactFeedbackGenerator(style: .light)
        generator.impactOccurred()

    case 5:
        let generator = UIImpactFeedbackGenerator(style: .medium)
        generator.impactOccurred()

    case 6:
        let generator = UIImpactFeedbackGenerator(style: .heavy)
        generator.impactOccurred()

    default:
        let generator = UISelectionFeedbackGenerator()
        generator.selectionChanged()
        count = 0
    }
}