iOS 位置相关

位置相关"/>

iOS 位置相关

后台定位

CLLocationManager // 定位管理器

关键设置项：

• desiredAccuracy //准确度

• distanceFilter //采集范围

回调方法：

//位置按照设置，发生变化时触发此方法
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 

注意事项：

iOS >= 7.0时，Capabilities中配置开启后台定位功能
iOS >= 8.0时，需要主动请求权限，并且在plist文件中配置NSLocationAlwaysUsageDescription、NSLocationWhenInUseUsageDescription

CLGeocoder //位置转码器

关键方法

//根据地理位置名称获得对应的CLPlacemark类
geocodeAddressString(addressString: String, completionHandler: CLGeocodeCompletionHandler)
//根据地理坐标获得对应的CLPlacemark类
reverseGeocodeLocation(location: CLLocation, completionHandler: CLGeocodeCompletionHandler）

地图定位

MKMapView

关键设置项

• showsScale //是否显示比例尺

• showsCompass //是否显示指南针

• showsTraffic //是否显示路况

• mapType //地图模式：普通模式：Standard；卫星模式：Satellite；混合模式：Hybrid；卫星三维模式：SatelliteFlyover；混合三维模式：HybridFlyover

• camera.pitch //摄像头角度

• centerCoordinate //地图中心点

回调方法

//当位置发生变化时，触发此方法optional public func mapView(mapView: MKMapView, didUpdateUserLocation userLocation: MKUserLocation)
//自定义大头针
optional public func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView?
//点击大头针optional public func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl）
//规划的路线optional public func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer

关键方法

粗略计算预计时间距离

    //设置起始点let request = MKDirectionsRequest()let source = MKMapItem(placemark: MKPlacemark(coordinate:self.currentLocation!, addressDictionary: nil))request.source = source//设置终点let destination = MKMapItem(placemark: MKPlacemark(coordinate:coordinate, addressDictionary: nil))request.destination = destination//type值为以下一种：//驾车：MKDirectionsTransportType.Automobile//步行：MKDirectionsTransportType.Walking//交通：MKDirectionsTransportType.Transit//随意：MKDirectionsTransportType.Anyrequest.transportType = typelet calcuteDirections = MKDirections(request: request)let calculateETA = MKDirections(request:request)//计算驾车或步行时间calcuteDirections.calculateDirectionsWithCompletionHandler { (response, error) inif (error == nil) {for route in response!.routes {//添加线路                    self.locationMapView.addOverlay(route.polyline)}}}//计算公共交通时间calculateETA.calculateETAWithCompletionHandler { response, error inif error == nil {if let r = response {self.etaInfoAlert(r)}}}

导航

• 苹果地图
  var launchOptions:[String : AnyObject]?

      if (r.transportType == MKDirectionsTransportType.Automobile) {launchOptions = [MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving]}else if (r.transportType == MKDirectionsTransportType.Walking) {launchOptions = [MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeWalking]}else if (r.transportType == MKDirectionsTransportType.Transit) {launchOptions = [MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeTransit]}r.destination.openInMapsWithLaunchOptions(launchOptions)
  

• 百度地图

       if (r.transportType == MKDirectionsTransportType.Automobile) {modelString = "driving"}else if (r.transportType == MKDirectionsTransportType.Walking) {modelString = "walking"}else if (r.transportType == MKDirectionsTransportType.Transit) {modelString = "transit"}let urlString = NSString(format: "baidumap://map/direction?origin=%f,%f&destination=%f,%f&mode=%@&src=pylocation",(self.currentLocation?.latitude)!,(self.currentLocation?.longitude)!, r.destination.placemark.coordinate.latitude, r.destination.placemark.coordinate.longitude,modelString!)UIApplication.sharedApplication().openURL(NSURL(string: urlString as String)!)
  

• 高德地图

       if (r.transportType == MKDirectionsTransportType.Automobile) {model = 0}else if (r.transportType == MKDirectionsTransportType.Walking) {model = 2}else if (r.transportType == MKDirectionsTransportType.Transit) {model = 1}let urlString = NSString(format: "iosamap://path?sourceApplication=pylocation&sid=currentlocation&did=destination&dlat=%f&dlon=%f&dev=0&t=%d&m=0",r.destination.placemark.coordinate.latitude,r.destination.placemark.coordinate.longitude,model)UIApplication.sharedApplication().openURL(NSURL(string: urlString as String)!)
  

demo GitHub地址：