How use accelerometer in swift 3

Question

I need help to use accelerometer with swift 3.

This is my code:

var motion = CMMotionManager()

@IBOutlet weak var statusAccel: UILabel!

override func viewDidAppear(_ animated: Bool) {
    motion.startAccelerometerUpdates(to: OperationQueue.current!){
        (data , error) in

        if let trueData = data {
            self.view.reloadInputViews()
            self.statusAccel.text = "\(trueData)"
        }
    }
}

It works but it just show me X Y and Z and i want to use Z.

Example : if Z = 2 do something

Answer 1

The data object that gets returned by startAccelerometerUpdates(...) is of type CMAccelerometerData which has a CMAcceleration property. From this you can get the z component.

var motion = CMMotionManager()

@IBOutlet weak var statusAccel: UILabel!

override func viewDidAppear(_ animated: Bool) {
    motion.startAccelerometerUpdates(to: OperationQueue.current!){
        (data , error) in

        if let trueData = data {
            self.view.reloadInputViews()
            self.statusAccel.text = "\(trueData)"

            if trueData.acceleration.z == 2 {
                // do things...
            }
        }
    }
}