使用iOS实现类似滴滴打车首页功能，就是中心点一直在屏幕中心，拖动地图的时候大头针位置不变，但是会顶部的位置会改变的方法！实现如下的方法就好。
设置所需要的对象的属性 在NSObject中设置
var currentViewController : UIViewController?
var centerPoint : CGPoint?
var locationCoor : CLLocationCoordinate2D?
var addressName : String?
private lazy var centerAnnotation : MAPointAnnotation = {
let centerAnnotation = MAPointAnnotation()
return centerAnnotation
}()
private lazy var request : AMapPOIKeywordsSearchRequest = {
let request = AMapPOIKeywordsSearchRequest()
request.requireExtension = true
return request
}()
private lazy var locationManager : AMapLocationManager = {
let locationManager = AMapLocationManager()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.locationTimeout = 3
locationManager.reGeocodeTimeout = 3
locationManager.distanceFilter = 2
return locationManager
}()
private lazy var search : AMapSearchAPI = {
let search = AMapSearchAPI()
search?.delegate = self
return search!
}()
private lazy var annotationView : NewCustomAnnotationView = {
let annotationView = NewCustomAnnotationView()
return annotationView
}()
//懒加载一个mapView
private lazy var mapView : MAMapView = {
let mapView = MAMapView(frame: CGRect(x: 0, y: KTopDistance, width: kScreenW, height: kScreenH - KTopDistance - KSafeScreenBottomMargin))
mapView.zoomLevel = 16
mapView.delegate = self
mapView.showsUserLocation = true
mapView.userTrackingMode = MAUserTrackingMode.follow
return mapView
}()
/// 初始化地图定位蓝点
private lazy var r : MAUserLocationRepresentation = {
let r = MAUserLocationRepresentation()
r.strokeColor = UIColor.clear
r.lineWidth = 1
r.locationDotFillColor = UIColor.clear
r.enablePulseAnnimation = true
r.strokeColor = UIColor.clear
return r
}()
private lazy var regeo : AMapReGeocodeSearchRequest = {
let regeo = AMapReGeocodeSearchRequest()
regeo.requireExtension = true
return regeo
}()
调用方法
func showCneterMapViewAndName() {
currentViewController!.view.addSubview(mapView)
requestManagerLocation()
}
调用方法
func requestManagerLocation() {
locationManager.requestLocation(withReGeocode: true) { [weak self](location, reGeocode, error) in
guard let lat = location?.coordinate.latitude else {return}
guard let lon = location?.coordinate.longitude else {return}
guard let addressName = reGeocode?.poiName else {return}
self?.addressName = addressName
self?.locationCoor = CLLocationCoordinate2DMake(lat, lon)
self?.mapView.zoomLevel = 16
self?.mapView.rotationDegree = 0
self?.mapView.removeAnnotation(self?.centerAnnotation)
self?.centerAnnotation.coordinate = (self?.locationCoor)!
self?.mapView.addAnnotation(self?.centerAnnotation)
let convertedMapCenterCoor = self!.mapView.convert(CGPoint(x: kScreenW/2, y: kScreenH/2), toCoordinateFrom: self?.mapView)
self?.mapView.setCenter(convertedMapCenterCoor, animated: true)
self?.annotationView.setSelected(true, animated: true)
///这里添加 addAnnotation
}
}
func searchReGeocodeWithCoordinate(coordinate:CLLocationCoordinate2D) {
regeo.location = AMapGeoPoint.location(withLatitude: CGFloat(coordinate.latitude), longitude: CGFloat(coordinate.longitude))
regeo.requireExtension = true
search.aMapReGoecodeSearch(regeo)
}
// 设置AMapSearchDelegate 代理方法
extension MapTools:AMapSearchDelegate {
// 获取到定位之后的返回信息
func onReGeocodeSearchDone(_ request: AMapReGeocodeSearchRequest!, response: AMapReGeocodeSearchResponse!) {
annotationView.title = response.regeocode.pois[0].name
annotationView.setSelected(true, animated: true)
}
}
// 设置 MAMapViewDelegate 代理方法
extension MapTools:MAMapViewDelegate {
func mapView(_ mapView: MAMapView!, viewFor annotation: MAAnnotation!) -> MAAnnotationView! {
if annotation.isKind(of: MAUserLocation.self) {
return nil
}
if annotation.isKind(of: MAPointAnnotation.self) {
let pointReuseIdetifier = "pointReuseIndetifier"
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: pointReuseIdetifier) as? NewCustomAnnotationView
if annotationView == nil {
annotationView = NewCustomAnnotationView(annotation: annotation, reuseIdentifier: pointReuseIdetifier)
}
self.annotationView = annotationView!
annotationView?.isSelected = true
annotationView?.image = UIImage(named: "person_balance")
annotationView?.centerOffset = CGPoint(x: 0, y: -18)
annotationView?.setSelected(true, animated: true)
annotationView?.title = addressName ?? ""
return annotationView!
}
return nil
}
func mapView(_ mapView: MAMapView!, mapDidMoveByUser wasUserAction: Bool) {
searchReGeocodeWithCoordinate(coordinate: self.centerAnnotation.coordinate)
}
func mapView(_ mapView: MAMapView!, mapWillMoveByUser wasUserAction: Bool) {
annotationView.setSelected(false, animated: true)
}
func mapViewRegionChanged(_ mapView: MAMapView!) {
let convertedLocationAnnoCoor = mapView.convert(CGPoint(x: kScreenW/2, y: kScreenH/2), toCoordinateFrom: mapView)
centerAnnotation.coordinate = convertedLocationAnnoCoor
}
```
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