前言
开发中地理编码与反地理编码经常使用到,下面是自己封装的一个工具类,使用场景
- 获取 当前的位置信息
- 输入经纬度 获取位置信息
- 输入地名 获取位置信息
使用案例(通过录入信息 通过闭包回调出位置模型)
HWLocationManage.hw_getLocation("宝安机场") { (item) in
}
HWLocationManage.hw_getCurrentLocatio { (item) in
}
HWLocationManage.hw_getLocation(23.000, 113.00) { (item) in
}
以下是该工具可以获取到的信息
/// 经度
var latitude:Double = 0
/// 纬度
var longitude:Double = 0
/// 国家
var country = ""
/// 省
var province = ""
/// 市
var city = ""
/// 区
var area = ""
/// 街道
var thoroughfare = ""
/// 详细地址
var address = ""
原理
import UIKit
import CoreLocation
class HWLocationItem: NSObject {
/// 经度
var latitude:Double = 0
/// 纬度
var longitude:Double = 0
/// 国家
var country = ""
/// 省
var province = ""
/// 市
var city = ""
/// 区
var area = ""
/// 街道
var thoroughfare = ""
/// 详细地址
var address = ""
}
private let manage = HWLocationManage()
class HWLocationManage: NSObject {
open var actionBlock:((HWLocationItem?)->())?
private lazy var locationManager = CLLocationManager()
private lazy var geoCoder = CLGeocoder()
/// 单例方法
// static let instance: HWLocationManage = HWLocationManage()
// open class func sharedManage() -> HWLocationManage {
// return instance
// }
/// 地理编码
open class func hw_getLocation(_ text:String,_ action:@escaping ((HWLocationItem?)->())) {
manage.actionBlock = { (item) in
action(item)
}
manage.hw_getLocation(text)
}
/// 获取当前位置
open class func hw_getCurrentLocatio(action:@escaping ((HWLocationItem?)->())) {
manage.actionBlock = { (item) in
action(item)
}
manage.loadLocation()
}
/// 反地理编码 经纬度->地址
open class func hw_getLocation(_ latitude:Double, _ longitude:Double, _ action:@escaping ((HWLocationItem?)->())) {
manage.actionBlock = { (item) in
action(item)
}
manage.hw_getLocation(latitude, longitude)
}
// MARK: 开始定位
private func loadLocation() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest //定位方式
if(UIDevice.current.systemVersion >= "8.0"){ //iOS8.0以上才可以使用
//始终允许访问位置信息
locationManager.requestAlwaysAuthorization()
//使用应用程序期间允许访问位置数据
locationManager.requestWhenInUseAuthorization()
}
locationManager.startUpdatingLocation() //开启定位
}
// MARK: 地理编码 地址->经纬度
private func hw_getLocation(_ text:String) {
geoCoder.geocodeAddressString(text) { [weak self] (pls: [CLPlacemark]?, error: Error?) in
if error == nil {
print("地理编码成功")
guard let plsResult = pls else {return}
self?.getLocationItem(plsResult)
}else {
print("错误")
if self?.actionBlock != nil {
self?.actionBlock!(nil)
}
}
}
}
// MARK: 反地理编码 经纬度->地址
private func hw_getLocation(_ latitude:Double, _ longitude:Double) {
let loc1 = CLLocation(latitude: latitude, longitude: longitude)
geoCoder.reverseGeocodeLocation(loc1) { [weak self] (pls: [CLPlacemark]?, error: Error?) in
if error == nil {
print("反地理编码成功")
guard let plsResult = pls else {return}
self?.getLocationItem(plsResult)
}else {
print("错误")
if self?.actionBlock != nil {
self?.actionBlock!(nil)
}
}
}
}
// MARK: 获取位置模型
private func getLocationItem(_ pls: [CLPlacemark]) {
let pl = pls.first
let item = HWLocationItem()
item.address = pl?.name ?? "" // 详细地址
item.country = pl?.country ?? "" // 国家
item.province = pl?.administrativeArea ?? "" // 省
if item.province.isEmpty {
item.province = (pl?.addressDictionary?["State"] ?? "") as! String
}
item.city = pl?.locality ?? "" // 市
if item.city.isEmpty {
item.city = (pl?.addressDictionary?["City"] ?? "") as! String
}
if item.city.isEmpty { // 四大直辖市的城市信息无法通过CLPlacemark的locality属性获得，只能通过访问administrativeArea属性来获得（如果locality为空，则可知为直辖市）
item.city = pl?.administrativeArea ?? ""
}
var area = pl?.subLocality ?? ""
if area.isEmpty {
area = (pl?.addressDictionary?["SubLocality"] ?? "") as! String
}
if area.isEmpty {
area = item.city
}
item.area = area // 区
item.thoroughfare = pl?.thoroughfare ?? ""// 街道
let newLocation = pl?.location?.hw_locationBaiduFromMars()
item.latitude = newLocation?.coordinate.latitude ?? 0
item.longitude = newLocation?.coordinate.longitude ?? 0
// print("省市自治区（州）:\(pl?.administrativeArea ?? "未知")")
// print("县区:\(pl?.subLocality ?? "未知")")
// print("国家地区:\(pl?.country ?? "未知")")
// print("县区(大陆为空):\(pl?.subAdministrativeArea ?? "未知")")
// print("道路+门牌号:\(pl?.name ?? "未知")")
// print("道路:\(pl?.thoroughfare ?? "未知")")
// print("门牌号:\(pl?.subThoroughfare ?? "未知")")
if self.actionBlock != nil {
self.actionBlock!(item)
}
}
deinit {
print("释放")
}
}
extension HWLocationManage : CLLocationManagerDelegate {
//获取定位信息
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location:CLLocation = locations[locations.count-1] //取得locations数组的最后一个
if(location.horizontalAccuracy > 0){ //判断是否为空
let lat = Double(String(format: "%.1f", location.coordinate.latitude))
let lon = Double(String(format: "%.1f", location.coordinate.longitude))
print("纬度:\(lon!)")
print("经度:\(lat!)")
hw_getLocation(lat ?? 0, lon ?? 0)
locationManager.stopUpdatingLocation() //停止定位
}
}
//出现错误
func locationManager(_ manager: CLLocationManager, didFinishDeferredUpdatesWithError error: Error?) {
if self.actionBlock != nil {
self.actionBlock!(nil)
}
}
}
// --- transform_earth_from_mars ---
// 参考来源：https://on4wp7.codeplex.com/SourceControl/changeset/view/21483#353936
//
// a = 6378245.0, 1/f = 298.3
// b = a * (1 - f)
// ee = (a^2 - b^2) / a^2;
let a:Double = 6378245.0
let ee:Double = 0.00669342162296594323
// --- transform_earth_from_mars end ---
// --- transform_mars_vs_bear_paw ---
// 参考来源：http://blog.woodbunny.com/post-68.html
let x_pi:Double = M_PI * 3000.0 / 180.0
public extension CLLocation {
/// 从地图坐标转化到火星坐标
func hw_locationMarsFromEarth() -> CLLocation {
let (n_lat,n_lng) = CLLocation.transform_earth_from_mars(lat: self.coordinate.latitude, lng: self.coordinate.longitude)
let coord_2d = CLLocationCoordinate2D(latitude: n_lat + self.coordinate.latitude, longitude: n_lng + self.coordinate.longitude)
return CLLocation(coordinate: coord_2d, altitude: self.altitude, horizontalAccuracy: self.horizontalAccuracy, verticalAccuracy: self.horizontalAccuracy, course: self.course, speed: self.speed, timestamp: self.timestamp)
}
/// 从火星坐标到地图坐标
func hw_locationEarthFromMars() -> CLLocation {
let (n_lat,n_lng) = CLLocation.transform_earth_from_mars(lat: self.coordinate.latitude, lng: self.coordinate.longitude)
let coord_2d = CLLocationCoordinate2D(latitude: self.coordinate.latitude - n_lat, longitude: self.coordinate.longitude - n_lng)
return CLLocation(coordinate: coord_2d, altitude: self.altitude, horizontalAccuracy: self.horizontalAccuracy, verticalAccuracy: self.horizontalAccuracy, course: self.course, speed: self.speed, timestamp: self.timestamp)
}
/// 从火星坐标转化到百度坐标
func hw_locationBaiduFromMars() -> CLLocation {
let (n_lat,n_lng) = CLLocation.transform_mars_from_baidu(lat: self.coordinate.latitude, lng: self.coordinate.longitude)
let coord_2d = CLLocationCoordinate2D(latitude: n_lat, longitude: n_lng)
return CLLocation(coordinate: coord_2d, altitude: self.altitude, horizontalAccuracy: self.horizontalAccuracy, verticalAccuracy: self.horizontalAccuracy, course: self.course, speed: self.speed, timestamp: self.timestamp)
}
/// 从百度坐标到火星坐标
func hw_locationMarsFromBaidu() -> CLLocation {
let (n_lat,n_lng) = CLLocation.transform_baidu_from_mars(lat: self.coordinate.latitude, lng: self.coordinate.longitude)
let coord_2d = CLLocationCoordinate2D(latitude: n_lat, longitude: n_lng)
return CLLocation(coordinate: coord_2d, altitude: self.altitude, horizontalAccuracy: self.horizontalAccuracy, verticalAccuracy: self.horizontalAccuracy, course: self.course, speed: self.speed, timestamp: self.timestamp)
}
/// 从百度坐标到地图坐标
func hw_locationEarthFromBaidu() -> CLLocation {
let mars = self.hw_locationMarsFromBaidu()
let (n_lat,n_lng) = CLLocation.transform_earth_from_mars(lat: mars.coordinate.latitude, lng: mars.coordinate.longitude)
let coord_2d = CLLocationCoordinate2D(latitude: self.coordinate.latitude - n_lat, longitude: self.coordinate.longitude - n_lng)
return CLLocation(coordinate: coord_2d, altitude: self.altitude, horizontalAccuracy: self.horizontalAccuracy, verticalAccuracy: self.horizontalAccuracy, course: self.course, speed: self.speed, timestamp: self.timestamp)
}
private class func transform_earth_from_mars(lat: Double, lng: Double) -> (Double, Double) {
if CLLocation.transform_sino_out_china(lat: lat, lng: lng) {
return (lat, lng)
}
var dLat = CLLocation.transform_earth_from_mars_lat(lng - 105.0, lat - 35.0)
var dLng = CLLocation.transform_earth_from_mars_lng(lng - 105.0, lat - 35.0)
let radLat = lat / 180.0 * M_PI
var magic = sin(radLat)
magic = 1 - ee * magic * magic
let sqrtMagic:Double = sqrt(magic)
dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * M_PI)
dLng = (dLng * 180.0) / (a / sqrtMagic * cos(radLat) * M_PI)
return (dLat,dLng)
}
private class func transform_earth_from_mars_lat(_ x: Double,_ y: Double) -> Double {
var ret: Double = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(fabs(x))
ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0
ret += (20.0 * sin(y * M_PI) + 40.0 * sin(y / 3.0 * M_PI)) * 2.0 / 3.0
ret += (160.0 * sin(y / 12.0 * M_PI) + 320 * sin(y * M_PI / 30.0)) * 2.0 / 3.0
return ret
}
private class func transform_earth_from_mars_lng(_ x: Double,_ y: Double) -> Double {
var ret: Double = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(fabs(x))
ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0
ret += (20.0 * sin(x * M_PI) + 40.0 * sin(x / 3.0 * M_PI)) * 2.0 / 3.0
ret += (150.0 * sin(x / 12.0 * M_PI) + 300.0 * sin(x / 30.0 * M_PI)) * 2.0 / 3.0
return ret
}
private class func transform_mars_from_baidu(lat: Double, lng: Double) -> (Double,Double) {
let x = lng , y = lat
let z = sqrt(x * x + y * y) + 0.00002 * sin(y * x_pi)
let theta = atan2(y, x) + 0.000003 * cos(x * x_pi)
return (z * sin(theta) + 0.006, z * cos(theta) + 0.0065)
}
private class func transform_baidu_from_mars(lat: Double, lng: Double) -> (Double,Double) {
let x = lng - 0.0065 , y = lat - 0.006
let z = sqrt(x * x + y * y) - 0.00002 * sin(y * x_pi)
let theta = atan2(y, x) - 0.000003 * cos(x * x_pi)
return (z * sin(theta), z * cos(theta))
}
private class func transform_sino_out_china(lat: Double, lng: Double) -> Bool {
if (lng < 72.004 || lng > 137.8347) {
return true
}
if (lat < 0.8293 || lat > 55.8271) {
return true
}
return false
}
}
Dome