Swift - 使用CoreLocation实现定位（经纬度、海拔、速度、距离等）

var currentLocation = CLLocation(latitude: 52.104526, longitude: 51.111151)
var targetLocation = CLLocation(latitude: 52.105526, longitude: 51.141151)
var distance:CLLocationDistance = currentLocation.distanceFromLocation(targetLocation)
println("两点间距离是：\(distance)")

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!
    @IBOutlet weak var label5: UILabel!
    @IBOutlet weak var label6: UILabel!
    @IBOutlet weak var label7: 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
        //更新距离
        locationManager.distanceFilter = 100
        ////发送授权申请
        locationManager.requestAlwaysAuthorization()
        if (CLLocationManager.locationServicesEnabled())
        {
            //允许使用定位服务的话，开启定位服务更新
            locationManager.startUpdatingLocation()
            print("定位开始")
        }
    }
     
    //定位改变执行，可以得到新位置、旧位置
    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        //获取最新的坐标
        let currLocation:CLLocation = locations.last!
        label1.text = "经度：\(currLocation.coordinate.longitude)"
        //获取纬度
        label2.text = "纬度：\(currLocation.coordinate.latitude)"
        //获取海拔
        label3.text = "海拔：\(currLocation.altitude)"
        //获取水平精度
        label4.text = "水平精度：\(currLocation.horizontalAccuracy)"
        //获取垂直精度
        label5.text = "垂直精度：\(currLocation.verticalAccuracy)"
        //获取方向
        label6.text = "方向：\(currLocation.course)"
        //获取速度
        label7.text = "速度：\(currLocation.speed)"
    }
}