谷歌地图缩小到 GPS 和标记答案

【问题标题】：Google Maps zoom out to GPS and markers谷歌地图缩小到 GPS 和标记
【发布时间】：2017-02-14 08:04:30
【问题描述】：

我试图在地图上显示三件事： GPS（当前位置），Marker 1，Marker 2，但我不确定我做对与否！这是我的代码：

 self.startMarker.position = CLLocationCoordinate2D(latitude: self.startLatitude, longitude: self.startLongitude)
 self.startMarker.icon = #imageLiteral(resourceName: "Pin Start")
 self.startMarker.map = self.mapView


 self.endMarker.position = CLLocationCoordinate2D(latitude: self.endLatitude, longitude: self.endLongitude)
 self.endMarker.icon = #imageLiteral(resourceName: "Pin End")
 self.endMarker.map = self.mapView


 let southWest = CLLocationCoordinate2DMake(self.startLatitude,self.startLongitude)
 let northEast = CLLocationCoordinate2DMake(self.endLatitude,self.endLongitude)
 let bounds = GMSCoordinateBounds(coordinate: northEast, coordinate: southWest)
 let camera = self.mapView.camera(for: bounds, insets:.zero)
 self.mapView.camera = camera!

更多代码：

  // MARK: - Google Map

private func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
            if status == CLAuthorizationStatus.authorizedWhenInUse {
                mapView.isMyLocationEnabled = true
            }
          }
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            let newLocation = locations.last
            mapView.camera = GMSCameraPosition.camera(withTarget: newLocation!.coordinate, zoom: 14)
            mapView.isMyLocationEnabled = true
        }

结果是这样的：

我需要什么：

已编辑

if let myLocation = self.mapView.myLocation {

let path = GMSMutablePath()
path.add(myLocation.coordinate)
path.add(self.startMarker.position)
path.add(self.endMarker.position)

let bounds = GMSCoordinateBounds(path: path)
                                        self.mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 40))

}

【问题讨论】：

我已经添加了一个答案，检查一下，确保调用了 didUpdateLocations()。

标签： ios iphone swift xcode google-maps

【解决方案1】：

显示所有带有屏幕绑定的标记：

在这里，我试图为您提供一个简单的示例，希望对您有所帮助。使用它，您可以在屏幕上显示任意数量的标记。

示例：

let path = GMSMutablePath()
for var i in 0 ..< array.count //Here take your "array" which contains lat and long.
{
    let marker = GMSMarker()
    let lat = Double(array.objectAtIndex(i).valueForKey(lattitude) as! String)
    let long = Double(arrayr.objectAtIndex(i).valueForKey(longitude) as! String)      
    marker.position = CLLocationCoordinate2DMake(lat!,long!)
    path.addCoordinate(marker.position)
    marker.map = self.mapView
}
let bounds = GMSCoordinateBounds(path: path)
self.mapView!.animateWithCameraUpdate(GMSCameraUpdate.fitBounds(bounds, withPadding: 30.0))

【讨论】：

您能告诉我应该如何填写array.count 吗？
@Mc.Lover 看，如果你有不同的纬度和经度，如果你从后端获取它，那么你可以直接使用那个，或者通过添加你的经度和使用那个数组来创建你自己的数组.
谢谢！但还是不行！你能看看我编辑的代码吗？

【解决方案2】：

你可以试试下面的代码，这是从ObjC代码转换而来的，这里是includingCoordinate的文档

let bounds = GMSCoordinateBounds()
bounds.includingCoordinate(self.startMarker.position)
bounds.includingCoordinate(self.endMarker.position)
bounds.includingCoordinate(yourCurrentLocationPosition)
self.mapView.animateWithCameraUpdate(GMSCameraUpdate(fitBounds:bounds, padding:20.0f))

【讨论】：

【解决方案3】：

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    showMarkers(locations)
    //stop updating location when you find suitable
}

func showMarkers(userLocation: [CLLocation]){

    let location1: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: self.startLatitude, longitude: self.startLongitude)
    let location2: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: self.endLatitude, longitude: self.endLongitude)
    let location3: CLLocationCoordinate2D = userLocation[0].coordinate

    var locationArray = []
    locationArray.append(location1)
    locationArray.append(location2)
    locationArray.append(location3)

    var bounds = GMSCoordinateBounds()
    for location in locationArray
    {
        let latitude = location.valueForKey("latitude")
        let longitude = location.valueForKey("longitude")

        let marker = GMSMarker()
        marker.position = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
        marker.map = self.mapView
        bounds = bounds.includingCoordinate(marker.position)
    }
    let update = GMSCameraUpdate.fitBounds(bounds, withPadding: 100)
    mapView.animateWithCameraUpdate(update)
}

注意：

locationArray 包含三个位置，即。 标记 1、标记 2、用户位置。

【讨论】：

【解决方案4】：

对于正在寻找 Objective-C 解决方案的人来说，这可能会有所帮助

//Locations
CLLocationCoordinate2D source = CLLocationCoordinate2DMake(19.2880, 72.1587);
CLLocationCoordinate2D userLocation = CLLocationCoordinate2DMake(19.1780, 72.9577);
CLLocationCoordinate2D destination = CLLocationCoordinate2DMake(19.0760, 72.8777);

//Create a GMSMutablePath
GMSMutablePath *path = [GMSMutablePath new];
[path addCoordinate:source];
[path addCoordinate:userLocation];
[path addCoordinate:destination];

//Create bounds
GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc]initWithPath:path];

//Update the camera position
[mapview animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds]];

【讨论】：