地图视图

Question

我已将谷歌地图按钮放置在路线视图控制器上用于谷歌地图。我已经生成了pod文件并创建了GoogleMapVC类.GoogleMapVC类仅显示序列中的最后一个坐标（即最后一个顺序是 self.coordinates（a：33.720805，b：73.057037，c：＆＃34; ccc＆＃34;）仅显示）。我想显示GoogleMapVC类中提到的所有坐标。如何显示所有坐标？ 这是我的GoogleMapVC课程。您可以从此链接下载示例项目进行更正    https://www.dropbox.com/s/gv0b7w8dir9mxl3/IOS9DrawRouteMapKitTutorial.zip?dl=0

import UIKit
    import GoogleMaps
    class GoogleMapVC: UIViewController {

        override func viewDidLoad() {
            super.viewDidLoad()
            self.title="Google Map"

            self.coordinates(a:33.718619,b:73.075135,c:"aaa")
             self.coordinates(a:33.712162,b:73.049859,c:"bbb")
            self.coordinates(a:33.720805,b:73.057037,c:"ccc")
}
    func coordinates(a:Double ,b:Double, c:String)  {
        let camera = GMSCameraPosition.camera(withLatitude:a,longitude:b, zoom:14)
        let mapView = GMSMapView.map(withFrame: CGRect.zero, camera:camera)
        let marker = GMSMarker()
        marker.position = camera.target
        marker.snippet = c
        marker.appearAnimation = kGMSMarkerAnimationPop
        marker.map = mapView
        self.view = mapView
    }

}

Answer 1

很明显，mapView只显示最后设置的坐标，因为你设置了3次自我坐标，这意味着每次更新值。

因此，如果您想显示多个点，请考虑将所有不同的坐标添加到数组中，并修改您的方法

let locations = [
    ["latitude": 33.718619, "longitude": 73.075135],
    ["latitude": 33.712162, "longitude": 73.049859],
    ["latitude": 33.720805, "longitude": 73.057037]
]

for location in locations {
    let annotation = MKPointAnnotation()
    annotation.title = location["title"] as? String
    annotation.coordinate = CLLocationCoordinate2D(latitude: location["latitude"] as! Double, longitude: location["longitude"] as! Double)
    mapView.addAnnotation(annotation)
}

Answer 2

试试这个

import UIKit
import GoogleMaps
class GoogleMapVC: UIViewController {

    var mapView : GMSMapView!
    override func viewDidLoad() {
        super.viewDidLoad()
        self.title="Google Map"

        let camera = GMSCameraPosition.camera(withLatitude: 33.718619,longitude: 73.075135, zoom:8)
        mapView = GMSMapView.map(withFrame: CGRect.zero, camera:camera)    
        self.view = mapView

        self.coordinates(a:33.718619,b:73.075135,c:"aaa")
        self.coordinates(a:33.712162,b:73.049859,c:"bbb")
        self.coordinates(a:33.720805,b:73.057037,c:"ccc")
    }

    func coordinates(a:Double ,b:Double, c:String)  {
        let marker = GMSMarker()
        marker.position = CLLocationCoordinate2D(latitude: a, longitude: b)
        marker.snippet = c
        marker.appearAnimation = kGMSMarkerAnimationPop
        marker.map = mapView
    }

}

这将显示更高的视图，您应该看到地图上的所有标记。

Answer 3

如果您只想在地图上显示一次点，则应该只使用self.coordinates(a:33.720805,b:73.057037,c:"ccc")。