使用加速度计检测设备的移动，并在控制台中显示数字的递增。

代码示例：

import UIKit
import CoreMotion

class ViewController: UIViewController {
    
    private let motionManager = CMMotionManager()
    private var currentNumber = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        startAccelerometers()
    }
    
    func startAccelerometers() {
        if motionManager.isAccelerometerAvailable {
            motionManager.accelerometerUpdateInterval = 0.1
            motionManager.startAccelerometerUpdates(to: .main) { [weak self] (data, error) in
                guard let data = data else { return }
                
                let threshold = 1.5 //设置设备移动敏感度
                if data.acceleration.x > threshold || data.acceleration.y > threshold || data.acceleration.z > threshold {
                    self?.currentNumber += 1
                    print(self?.currentNumber ?? 0)
                }
            }
        }
    }
}