我认为@Scriptable是对的，文档中没有iOS SDK的Zoom Controls部分。
好吧，我做了我自己的（和非常基本的）控件。x1c 0d1x
保持这个顺序（MapView，Button，Button），否则，你看不到按钮。

的
首先，您必须选择UIVIew并将类更改为GSMMapView
在MapViewController中，

import Foundation
import UIKit
import GoogleMaps

class MapViewController: UIViewController {

    struct Place {
        let id: Int
        let name: String
        let lat: CLLocationDegrees
        let lng: CLLocationDegrees
        let icon: String
    }

    @IBOutlet weak var mapView: GMSMapView!
    var markerDict: [Int: GMSMarker] = [:]

    var zoom: Float = 15

    override func viewDidLoad() {
        super.viewDidLoad()

        let camera = GMSCameraPosition.camera(withLatitude: 34.1381168, longitude: -118.3555723, zoom: zoom)
        self.mapView.camera = camera

        do {
            if let styleURL = Bundle.main.url(forResource: "style", withExtension: "json") {
                mapView.mapStyle = try GMSMapStyle(contentsOfFileURL: styleURL)
            } else {
                NSLog("Unable to find style.json")
            }
        } catch {
            NSLog("One or more of the map styles failed to load. \(error)")
        }

        let places = [
            Place(id: 0, name: "MrMins", lat: 34.1331168, lng: -118.3550723, icon: "i01"),
        ]

        for place in places {
            let marker = GMSMarker()
            marker.position = CLLocationCoordinate2D(latitude: place.lat, longitude: place.lng)
            marker.title = place.name
            marker.snippet = "Custom snipet message \(place.name)"
            marker.appearAnimation = kGMSMarkerAnimationPop
            //marker.icon = self.imageWithImage(image: UIImage(named: place.icon)!, scaledToSize: CGSize(width: 35.0, height: 35.0))
            marker.map = self.mapView

            markerDict[place.id] = marker
        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    @IBAction func btnZoomIn(_ sender: Any) {
        zoom = zoom + 1
        self.mapView.animate(toZoom: zoom)
    }

    @IBAction func btnZoomOut(_ sender: Any) {
        zoom = zoom - 1
        self.mapView.animate(toZoom: zoom)
    }

}

字符串

你应该捕捉当前的缩放值，因为如果你硬编码缩放值，用户将使用不仅按钮，但按钮和手势时，用户将按下按钮后，通过手势缩小，你会缩放到旧的缩放值（非常接近Map）
要修复这个时刻，你应该在这里捕捉缩放值（在GMSMapViewDelegate中）

func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
    zoom = mapView.camera.zoom
}

字符串
所有的代码都是这样的

class A: UIViewController {
      var zoom: Float = 15

    @IBAction func ZoomInButtonPressed(_ sender: UIButton) {
        let nextZoom = zoom + 1
        mapView.animate(toZoom: nextZoom)
    }
}

extension A: GMSMapViewDelegate { 
    func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
        zoom = mapView.camera.zoom
    }
}

型