@capacitor/google-maps

Google maps on Capacitor

Install

npm install @capacitor/google-maps
npx cap sync

API Keys

To use the Google Maps SDK on any platform, API keys associated with an account with billing enabled are required. These can be obtained from the Google Cloud Console. This is required for all three platforms, Android, iOS, and Javascript. Additional information about obtaining these API keys can be found in the Google Maps documentation for each platform.

iOS

The Google Maps SDK supports the use of showing the users current location via enableCurrentLocation(bool). To use this, Apple requires privacy descriptions to be specified in Info.plist:

• NSLocationAlwaysUsageDescription (Privacy - Location Always Usage Description)
• NSLocationWhenInUseUsageDescription (Privacy - Location When In Use Usage Description)

Read about Configuring Info.plist in the iOS Guide for more information on setting iOS permissions in Xcode.

The Google Maps SDK currently does not support running on simulators using the new M1-based Macbooks. This is a known and acknowledged issue and requires a fix from Google. If you are developing on a M1 Macbook, building and running on physical devices is still supported and is the recommended approach.

Android

The Google Maps SDK for Android requires you to add your API key to the AndroidManifest.xml file in your project.

<meta-data android:name="com.google.android.geo.API_KEY" android:value="YOUR_API_KEY_HERE"/>

To use certain location features, the SDK requires the following permissions to also be added to your AndroidManifest.xml:

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Usage

The Google Maps Capacitor plugin ships with a web component that must be used to render the map in your application as it enables us to embed the native view more effectively on iOS. The plugin will automatically register this web component for use in your application.

For Angular users, you will get an error warning that this web component is unknown to the Angular compiler. This is resolved by modifying the module that declares your component to allow for custom web components.

import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';

@NgModule({
  schemas: [CUSTOM_ELEMENTS_SCHEMA]
})

Include this component in your HTML and assign it an ID so that you can easily query for that element reference later.

<capacitor-google-map id="map"></capacitor-google-map>

On Android, the map is rendered beneath the entire webview, and uses this component to manage its positioning during scrolling events. This means that as the developer, you must ensure that the webview is transparent all the way through the layers to the very bottom. In a typically Ionic application, that means setting transparency on elements such as IonContent and the root HTML tag to ensure that it can be seen. If you can't see your map on Android, this should be the first thing you check.

On iOS, we render the map directly into the webview and so the same transparency effects are not required. We are investigating alternate methods for Android still and hope to resolve this better in a future update.

The Google Map element itself comes unstyled, so you should style it to fit within the layout of your page structure. Because we're rendering a view into this slot, by itself the element has no width or height, so be sure to set those explicitly.

capacitor-google-map {
  display: inline-block;
  width: 275px;
  height: 400px;
}

Next, we should create the map reference. This is done by importing the GoogleMap class from the Capacitor plugin and calling the create method, and passing in the required parameters.

import { GoogleMap } from '@capacitor/google-maps';

const apiKey = 'YOUR_API_KEY_HERE';

const mapRef = document.getElementById('map');

const newMap = await GoogleMap.create({
  id: 'my-map', // Unique identifier for this map instance
  element: mapRef, // reference to the capacitor-google-map element
  apiKey: apiKey, // Your Google Maps API Key
  config: {
    center: {
      // The initial position to be rendered by the map
      lat: 33.6,
      lng: -117.9,
    },
    zoom: 8, // The initial zoom level to be rendered by the map
  },
});

At this point, your map should be created within your application. Using the returned reference to the map, you can easily interact with your map in a number of way, a few of which are shown here.

const newMap = await GoogleMap.create({...});

// Add a marker to the map
const markerId = await newMap.addMarker({
  coordinate: {
    lat: 33.6,
    lng: -117.9
  }
});

// Move the map programmatically
await newMap.setCamera({
  coordinate: {
    lat: 33.6,
    lng: -117.9
  }
});

// Enable marker clustering
await newMap.enableClustering();

// Handle marker click
await newMap.setOnMarkerClickListener((event) => {...});

// Clean up map reference
await newMap.destroy();

Full Examples

Angular

import { GoogleMap } from '@capacitor/google-maps';

@Component({
  template: `
    <capacitor-google-maps #map></capacitor-google-maps>
    <button (click)="createMap()">Create Map</button>
  `,
  styles: [
    `
      capacitor-google-maps {
        display: inline-block;
        width: 275px;
        height: 400px;
      }
    `,
  ],
})
export class MyMap {
  @ViewChild('map')
  mapRef: ElementRef<HTMLElement>;
  newMap: GoogleMap;

  async createMap() {
    this.newMap = await GoogleMap.create({
      id: 'my-cool-map',
      element: this.mapRef.nativeElement,
      apiKey: environment.apiKey,
      config: {
        center: {
          lat: 33.6,
          lng: -117.9,
        },
        zoom: 8,
      },
    });
  }
}

React

import { GoogleMap } from '@capacitor/google-maps';
import { useRef } from 'react';

const MyMap: React.FC = () => {
  const mapRef = useRef<HTMLElement>();
  let newMap: GoogleMap;

  async function createMap() {
    if (!mapRef.current) return;

    newMap = await GoogleMap.create({
      id: 'my-cool-map',
      element: mapRef.current,
      apiKey: process.env.REACT_APP_YOUR_API_KEY_HERE,
      config: {
        center: {
          lat: 33.6,
          lng: -117.9
        },
        zoom: 8
      }
    })
  }

  return (
    <div className="component-wrapper">
      <capacitor-google-map ref={mapRef} style={{
        display: 'inline-block',
        width: 275,
        height: 400
      }}></capacitor-google-map>

      <button onClick={createMap}>Create Map</button>
    </div>
  )
}

export default MyMap;

Javascript

<capacitor-google-map id="map"></capacitor-google-map>
<button onclick="createMap()">Create Map</button>

<style>
  capacitor-google-map {
    display: inline-block;
    width: 275px;
    height: 400px;
  }
</style>

<script>
  import { GoogleMap } from '@capacitor/google-maps';

  const createMap = async () => {
    const mapRef = document.getElementById('map');

    const newMap = await GoogleMap.create({
      id: 'my-map', // Unique identifier for this map instance
      element: mapRef, // reference to the capacitor-google-map element
      apiKey: 'YOUR_API_KEY_HERE', // Your Google Maps API Key
      config: {
        center: {
          // The initial position to be rendered by the map
          lat: 33.6,
          lng: -117.9,
        },
        zoom: 8, // The initial zoom level to be rendered by the map
      },
    });
  };
</script>

API

• create(...)
• enableClustering()
• disableClustering()
• addMarker(...)
• addMarkers(...)
• removeMarker(...)
• removeMarkers(...)
• destroy()
• setCamera(...)
• setMapType(...)
• enableIndoorMaps(...)
• enableTrafficLayer(...)
• enableAccessibilityElements(...)
• enableCurrentLocation(...)
• setPadding(...)
• setOnBoundsChangedListener(...)
• setOnCameraIdleListener(...)
• setOnCameraMoveStartedListener(...)
• setOnClusterClickListener(...)
• setOnClusterInfoWindowClickListener(...)
• setOnInfoWindowClickListener(...)
• setOnMapClickListener(...)
• setOnMarkerClickListener(...)
• setOnMyLocationButtonClickListener(...)
• setOnMyLocationClickListener(...)
• Interfaces
• Type Aliases
• Enums

create(...)

create(options: CreateMapArgs, callback?: MapListenerCallback<MapReadyCallbackData> | undefined) => Promise<GoogleMap>

Param	Type
options	CreateMapArgs
callback	MapListenerCallback<MapReadyCallbackData>

Returns: Promise<GoogleMap>

---

enableClustering()

enableClustering() => Promise<void>

---

disableClustering()

disableClustering() => Promise<void>

---

addMarker(...)

addMarker(marker: Marker) => Promise<string>

Param	Type
marker	Marker

Returns: Promise<string>

---

addMarkers(...)

addMarkers(markers: Marker[]) => Promise<string[]>

Param	Type
markers	Marker[]

Returns: Promise<string[]>

---

removeMarker(...)

removeMarker(id: string) => Promise<void>

Param	Type
id	string

---

removeMarkers(...)

removeMarkers(ids: string[]) => Promise<void>

Param	Type
ids	string[]

---

destroy()

destroy() => Promise<void>

---

setCamera(...)

setCamera(config: CameraConfig) => Promise<void>

Param	Type
config	CameraConfig

---

setMapType(...)

setMapType(mapType: MapType) => Promise<void>

Param	Type
mapType	MapType

---

enableIndoorMaps(...)

enableIndoorMaps(enabled: boolean) => Promise<void>

Param	Type
enabled	boolean

---

enableTrafficLayer(...)

enableTrafficLayer(enabled: boolean) => Promise<void>

Param	Type
enabled	boolean

---

enableAccessibilityElements(...)

enableAccessibilityElements(enabled: boolean) => Promise<void>

Param	Type
enabled	boolean

---

enableCurrentLocation(...)

enableCurrentLocation(enabled: boolean) => Promise<void>

Param	Type
enabled	boolean

---

setPadding(...)

setPadding(padding: MapPadding) => Promise<void>

Param	Type
padding	MapPadding

---

setOnBoundsChangedListener(...)

setOnBoundsChangedListener(callback?: MapListenerCallback<CameraIdleCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<CameraIdleCallbackData>

---

setOnCameraIdleListener(...)

setOnCameraIdleListener(callback?: MapListenerCallback<CameraIdleCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<CameraIdleCallbackData>

---

setOnCameraMoveStartedListener(...)

setOnCameraMoveStartedListener(callback?: MapListenerCallback<CameraMoveStartedCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<CameraMoveStartedCallbackData>

---

setOnClusterClickListener(...)

setOnClusterClickListener(callback?: MapListenerCallback<ClusterClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<ClusterClickCallbackData>

---

setOnClusterInfoWindowClickListener(...)

setOnClusterInfoWindowClickListener(callback?: MapListenerCallback<ClusterClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<ClusterClickCallbackData>

---

setOnInfoWindowClickListener(...)

setOnInfoWindowClickListener(callback?: MapListenerCallback<MarkerClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<MarkerClickCallbackData>

---

setOnMapClickListener(...)

setOnMapClickListener(callback?: MapListenerCallback<MapClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<MapClickCallbackData>

---

setOnMarkerClickListener(...)

setOnMarkerClickListener(callback?: MapListenerCallback<MarkerClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<MarkerClickCallbackData>

---

setOnMyLocationButtonClickListener(...)

setOnMyLocationButtonClickListener(callback?: MapListenerCallback<MyLocationButtonClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<MyLocationButtonClickCallbackData>

---

setOnMyLocationClickListener(...)

setOnMyLocationClickListener(callback?: MapListenerCallback<MapClickCallbackData> | undefined) => Promise<void>

Param	Type
callback	MapListenerCallback<MapClickCallbackData>

---

Interfaces

CreateMapArgs

An interface containing the options used when creating a map.

Prop	Type	Description	Default
id	string	A unique identifier for the map instance.
apiKey	string	The Google Maps SDK API Key.
config	GoogleMapConfig	The initial configuration settings for the map.
element	HTMLElement	The DOM element that the Google Map View will be mounted on which determines size and positioning.
forceCreate	boolean	Destroy and re-create the map instance if a map with the supplied id already exists	false

GoogleMapConfig

Prop	Type	Description	Default
width	number	Override width for native map.
height	number	Override height for native map.
x	number	Override absolute x coordinate position for native map.
y	number	Override absolute y coordinate position for native map.
center	LatLng	Default location on the Earth towards which the camera points.
zoom	number	Sets the zoom of the map.
androidLiteMode	boolean	Enables image-based lite mode on Android.	false
devicePixelRatio	number	Override pixel ratio for native map.

LatLng

An interface representing a pair of latitude and longitude coordinates.

Prop	Type	Description
lat	number	Coordinate latitude, in degrees. This value is in the range [-90, 90].
lng	number	Coordinate longitude, in degrees. This value is in the range [-180, 180].

MapReadyCallbackData

Prop	Type
mapId	string

Marker

A marker is an icon placed at a particular point on the map's surface.

Prop	Type	Description	Default
coordinate	LatLng	Marker position
opacity	number	Sets the opacity of the marker, between 0 (completely transparent) and 1 inclusive.	1
title	string	Title, a short description of the overlay.
snippet	string	Snippet text, shown beneath the title in the info window when selected.
isFlat	boolean	Controls whether this marker should be flat against the Earth's surface or a billboard facing the camera.	false
iconUrl	string	Marker icon to render.
draggable	boolean	Controls whether this marker can be dragged interactively	false

CameraConfig

Configuration properties for a Google Map Camera

Prop	Type	Description	Default
coordinate	LatLng	Location on the Earth towards which the camera points.
zoom	number	Sets the zoom of the map.
bearing	number	Bearing of the camera, in degrees clockwise from true north.	0
angle	number	The angle, in degrees, of the camera from the nadir (directly facing the Earth). The only allowed values are 0 and 45.	0
animate	boolean	Animate the transition to the new Camera properties.	false
animationDuration	number

MapPadding

Controls for setting padding on the 'visible' region of the view.

Prop	Type
top	number
left	number
right	number
bottom	number

CameraIdleCallbackData

Prop	Type
mapId	string
bounds	LatLngBounds
bearing	number
latitude	number
longitude	number
tilt	number
zoom	number

LatLngBounds

An interface representing the viewports latitude and longitude bounds.

Prop	Type
southwest	LatLng
center	LatLng
northeast	LatLng

CameraMoveStartedCallbackData

Prop	Type
mapId	string
isGesture	boolean

ClusterClickCallbackData

Prop	Type
mapId	string
latitude	number
longitude	number
size	number
items	MarkerCallbackData[]

MarkerCallbackData

Prop	Type
markerId	string
latitude	number
longitude	number
title	string
snippet	string

MarkerClickCallbackData

Prop	Type
mapId	string

MapClickCallbackData

Prop	Type
mapId	string
latitude	number
longitude	number

MyLocationButtonClickCallbackData

Prop	Type
mapId	string

Type Aliases

MapListenerCallback

The callback function to be called when map events are emitted.

(data: T): void

Enums

MapType

Members	Value	Description
Normal	'Normal'	Basic map.
Hybrid	'Hybrid'	Satellite imagery with roads and labels.
Satellite	'Satellite'	Satellite imagery with no labels.
Terrain	'Terrain'	Topographic data.
None	'None'	No base map tiles.