CoreLocation是iOS中一個提供設備定位的框架。經過這個框架能夠實現定位處理,從而獲取位置數據,好比經度、緯度、海拔信息等。html
kCLLocationAccuracyBestForNavigation :精度最高,通常用於導航
kCLLocationAccuracyBest : 精確度最佳
kCLLocationAccuracyNearestTenMeters :精確度10m之內
kCLLocationAccuracyHundredMeters :精確度100m之內
kCLLocationAccuracyKilometer :精確度1000m之內
kCLLocationAccuracyThreeKilometers :精確度3000m之內git
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("兩點間距離是:\(distance)")
4,下面經過一個樣例演示如何獲取設備相關的位置數據(經度,緯度,海拔,速度等信息) swift
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() //設置定位服務管理器代理 locationManager.delegate = self //設置定位進度 locationManager.desiredAccuracy = kCLLocationAccuracyBest //更新距離 locationManager.distanceFilter = 100 ////發送受權申請 locationManager.requestAlwaysAuthorization() if (CLLocationManager.locationServicesEnabled()) { //容許使用定位服務的話,開啓定位服務更新 locationManager.startUpdatingLocation() print("定位開始") } } //定位改變執行,能夠獲得新位置、舊位置 func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { //獲取最新的座標 let currLocation:CLLocation = locations.last! label1.text = "經度:\(currLocation.coordinate.longitude)" //獲取緯度 label2.text = "緯度:\(currLocation.coordinate.latitude)" //獲取海拔 label3.text = "海拔:\(currLocation.altitude)" //獲取水平精度 label4.text = "水平精度:\(currLocation.horizontalAccuracy)" //獲取垂直精度 label5.text = "垂直精度:\(currLocation.verticalAccuracy)" //獲取方向 label6.text = "方向:\(currLocation.course)" //獲取速度 label7.text = "速度:\(currLocation.speed)" } }
原文出自:www.hangge.com 轉載保留原文連接:http://www.hangge.com/blog/cache/detail_783.html框架