swift - iOS10之后的加速器

 

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import UIKit   //1.加速器框架 import CoreMotion   class ViewController: UIViewController {       //1.创建运动管理者 必须设置为 全局的     let manager = CMMotionManager()           override func viewDidLoad() {         super.viewDidLoad()                   //2.判断加速计是否可用         if !manager.isAccelerometerAvailable{             print("加速计不可用")             return         }                   //设置采集间隔 //        manager.accelerometerUpdateInterval = 1         manager.accelerometerUpdateInterval = 1.0/2                   //3.开始采集         manager.startAccelerometerUpdates()           //        //push:主动告诉外界数据 //        manager.startAccelerometerUpdates(to: OperationQueue.main) { (data:CMAccelerometerData?, err:Error?) in //            if err == nil{ //                print(data) //                print(data?.acceleration.x, data?.acceleration.y, data?.acceleration.z) //            } //        }               }         override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {                   //这里必须 执行  manager.startAccelerometerUpdates() 才有数据         print(manager.accelerometerData?.acceleration.x, manager.accelerometerData?.acceleration.y, manager.accelerometerData?.acceleration.z)     } }