iOS Motion Detection: Motion Detection Sensitivity Levels

Question

I have a simple question. I\'m trying to detect when a user shakes the iPhone. I have the standard code in place to detect the motion and this works no problem. However, in test

Answer 1

Heres how I did this using Swift 3.

Import CoreMotion and create an instance

import CoreMotion
let motionManager = CMMotionManager()

On ViewDidLoad or wherever you want to start checking for updates:

 motionManager.startDeviceMotionUpdates(to: OperationQueue.current!, withHandler:{
            deviceManager, error in
            if(error == nil){
                if let mgr = deviceManager{
                    self.handleMotion(rate: mgr.rotationRate)
                }
            }
        })

This function takes the rotation rate and gets a sum for the absolute values for x,y and z movements

  func handleMotion(rate: CMRotationRate){
        let totalRotation = abs(rate.x) + abs(rate.y) + abs(rate.z)

        if(totalRotation > 20) {//Play around with the number 20 to find the optimal level for your case
            start()
        }else{
       print(totalRotation)
        }
    }

func start(){

//The function you want to trigger when the device is rotated

}