Swift - 使用CoreLocation获取设备方向（真实方向，磁极方向）

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import UIKit

import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate {

    //定位管理器

    let locationManager:CLLocationManager = CLLocationManager()

    @IBOutlet weak var label1: UILabel!

    @IBOutlet weak var label2: UILabel!

    @IBOutlet weak var label3: UILabel!

    @IBOutlet weak var label4: UILabel!

    override func viewDidLoad() {

        super.viewDidLoad()

        //设置定位服务管理器代理

        locationManager.delegate = self

        //设置定位进度

        locationManager.desiredAccuracy = kCLLocationAccuracyBest

        //发送授权申请

        locationManager.requestAlwaysAuthorization()

    }

    //获取设备是否允许使用定位服务

    func locationManager(manager: CLLocationManager!,

        didChangeAuthorizationStatus status: CLAuthorizationStatus) {

        if status == CLAuthorizationStatus.NotDetermined || status == CLAuthorizationStatus.Denied{

        }else{

            //允许使用定位服务的话，开启定位服务更新

            locationManager.startUpdatingHeading()

            println("方向定位开始")

            //关闭定位

            //locationManager.stopUpdatingHeading()

        }

    }

    //方向改变执行

    func locationManager(manager: CLLocationManager!, didUpdateHeading newHeading: CLHeading!) {

        label1.text = "磁极方向：\(newHeading.magneticHeading)"

        label2.text = "真实方向：\(newHeading.trueHeading)"

        label3.text = "方向的精度：\(newHeading.headingAccuracy)"

        label4.text = "时间：\(newHeading.timestamp)"

    }  

}