Swift 3D Touch Force Value in UIButton

Question

how can I measure the 3D touch force applied to a UIButton function? I want to use it for changing the volume of an AVAudioPlayer property in swift.

Answer 1

You can use something that recognizes 3D touch for all UIView classes \ subclass

make a custom class

class customButton : UIButton{
    override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
        for touch in touches{
            print("% Touch pressure: \(touch.force/touch.maximumPossibleForce)");
        }
    }

    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        print("Touches End")
    }
}

and instead of UIButton Touch Observer (TouchUpInside \ TouchUpInside..) just use this methods above
this will work for all UIView class

class customView : UIView ....//same code as above