Swift

swift ios 系统定位和反地理编码

2016-03-13  本文已影响1174人  LionIQ_数据狮

最近项目要用到定位的功能,研究了一番百度地图,需要接入很多第三方库,还需要生成密钥等等,个人觉得比较麻烦,虽然百度地图的功能已经相当完善了,最后决定用系统地图定位,系统自带用的是高德地图,AIP很清晰,下面是代码实现。
首先import CoreLocation, 创建 OTTLocationManager类,继承NSObject

// 创建CLLocationManager 对象
let manager = CLLocationManager()
// 保存当前定位:
var currentLocation: CLLocation?
// 检测是否获取到定位
// 反地理编码,保存城市,地区
var subLocality: String?
var locality: String?

创建单例,方便ViewController使用:

//singleton manager
class var defaultManager: OTTLocationManager {
struct Static {
static let locManager = OTTLocationManager()
}
return Static.locManager
}
开启定位服务的初始设定:

func getLatLon() {
   
    if (CLLocationManager.locationServicesEnabled()) {
        
        //使用应用程序期间允许访问位置数据
        self.manager.requestWhenInUseAuthorization()
        self.manager.delegate = self
        self.manager.desiredAccuracy = kCLLocationAccuracyBest
        self.manager.distanceFilter = kCLLocationAccuracyHundredMeters
        self.manager.startUpdatingLocation()
    } else {
        CLLocationManager.authorizationStatus()
        print("[OTTLocationManager getLatLon] 定位服务未开启")
    }

}

实现代理方法,获取定位经纬度及反地理编码:
extension OTTLocationManager: CLLocationManagerDelegate {

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    
    self.isLocation = true
    //取得locations数组的最后一个:因定位一直在移动,所以取数组最后一个准确经纬度
    let location: CLLocation = locations[locations.count - 1]
    if location.horizontalAccuracy > 0 {
        let lat = Float(location.coordinate.latitude)
        let lon = Float(location.coordinate.longitude)
        
        self.currentLocation = location
        print("[OTTLocationManager locationManager:didUpdateLocations] lat = \(lat),  lon = \(lon)")
        
        //反地理编码:将经纬度转换成城市,地区,街道
        CLGeocoder().reverseGeocodeLocation(location) { (placemakes: [CLPlacemark]?, error: NSError?) -> Void in
            guard let placemark = placemakes?.first else {
                return
            }
            
           // 城市
            self.locality = placemark.locality
           // 地区
            self.subLocality = placemark.subLocality
            print("[OTTLocationManager locationManager:didUpdateLocations] locality = \(placemark.locality), sublocality = \(placemark.subLocality), subthoroughfare = \(placemark.subThoroughfare), self.subLocality = \(self.subLocality)")  //详细街道
        }
    }
    // 停止定位服务
    self.manager.stopUpdatingLocation()
}

//MARK:定位错误信息
func locationManager(manager: CLLocationManager, didFinishDeferredUpdatesWithError error: NSError?) {
    
    print("[OTTLocationManager locationManager:didFinishDeferredUpdatesWithError] \(error)\(error?.description)")
}

//检测是否获取到定位
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
    //如果未开启定位服务或者获取不到定位,会走此代理方法
    self.manager.stopUpdatingLocation()
    self.isLocation = false
    print("[OTTLocationManager locationManager:didFailWithError] 无法获取到定位")
}

}

啊哈,这样就实现了简单的定位功能.
模拟器运行,要在Debug->Location->CustomLocation 设置经纬度,模拟移动端定位,否则不会执行代理方法。
如果要实现地图定位功能,需要import MapKit,实现 MKMapViewDelegate代理方法,后续介绍,敬请期待。

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