Google Maps

@nativescript/google-maps #

A plugin that allows you to use the Maps SDK to access Google Maps features.

Contents #

• Prerequisites

• Installation

• Use @nativescript/google-maps with Core

  • Use @nativescript/google-maps with Angular
  • Use @nativescript/google-maps with Vue
  • Control the camera
  • Set the map type
  • Styling The Map

• API

  • MapView Class

    • Events
    • Properties

  • GoogleMap Object

    • Properties
    • Methods

  • Camera Position

  • Projection

  • UISettings

  • MapType enum

  • Markers

    • Adding Markers
    • Marker Object
    • MarkerOptions
    • Removing Markers

  • Circles

    • Adding Circles
    • CircleOptions
    • Removing Circles

  • Polygons

    • Adding Polygons
    • PolygonOptions
    • Removing Polygons

  • Polylines

    • Adding Polylines
    • PolylineOptions
    • Removing Polylines

  • Ground Overlays

    • Adding Ground Overlays
    • GroundOverlayOptions
    • Removing Ground Overlays

  • Tile Overlays

    • Adding Tile Overlays
    • TileOverlayOptions
    • Removing Tile Overlays
    • Tile Providers

Prerequisites #

1. To use the Google Maps API, register your app in the Google API Console and obtain an API key.

2. Add the Google Maps API key to your app.

Android

To add the API key for Android, modify the AndroidManifest.xml file and add the <meta-data> tag with the com.google.android.geo.API_KEY as its name and the key as the value.

<application
  android:name="com.tns.NativeScriptApplication"
  android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:theme="@style/AppTheme"
  android:hardwareAccelerated="true"
>
  <meta-data android:name="com.google.android.geo.API_KEY" android:value="yourKey" />
</application>

iOS

To add the API key for iOS, add the TNSGoogleMapsAPIKey key and the API key as the value to the Info.plist file, located at App_Resources/iOS.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>TNSGoogleMapsAPIKey</key>
    <string>yourKey</string>
  </dict>
</plist>

Installation #

npm install @nativescript/google-maps

To use the plugin in the different NativeScript flavors, modify the main.ts to import and then register it.

Use @nativescript/google-maps with core #

1. Register the plugin namespace with Page's xmlns attribute providing your prefix( map, for example).

<Page xmlns="http://schemas.nativescript.org/tns.xsd"
  xmlns:map="@nativescript/google-maps">

2. Access the <MapView> using the the map prefix.

<map:MapView ...

Below is the complete code from the 2 preceding steps:

<Page
  xmlns="http://schemas.nativescript.org/tns.xsd"
  xmlns:map="@nativescript/google-maps"
>
  <map:MapView
    lat="{{lat}}"
    lng="{{lng}}"
    zoom="{{zoom}}"
    bearing="{{bearing}}"
    tilt="{{tilt}}"
    mapTap="{{onTap}}"
    mapLongPress="{{onLongPress}}"
    markerTap="{{onMarkerTap}}"
  />
</Page>

3. To manage the mapping features, listen to the map view's ready event and get the reference to the GoogleMap instance from the event data.

<Page xmlns="http://schemas.nativescript.org/tns.xsd"
  xmlns:map="@nativescript/google-maps">
	<map:MapView
		lat="{{lat}}"
		lng="{{lng}}"
		zoom="{{zoom}}"
		bearing="{{bearing}}"
		tilt="{{tilt}}"

		ready="{{onReady}}" 👈

		mapTap="{{onTap}}"
		mapLongPress="{{onLongPress}}"
		markerTap="{{onMarkerTap}}"
	/>
</Page>

To use the plugin in the different NativeScript flavors, modify the main.ts to register it.

Use @nativescript/google-maps with Angular #

1. Register the plugin by adding the GoogleMapsModule to the imports array of the AppModule, in app.module.ts as follows:

import { GoogleMapsModule } from '@nativescript/google-maps/angular';

// Registering
@NgModule({
    imports: [
      GoogleMapsModule
    ],
    declarations: [
      AppComponent
    ],
    bootstrap: [AppComponent]
})

2. Add MapView to your markup.

<MapView
  (mapTap)="onTap($event)"
  (mapLongPress)="onLongPress($event)"
  (markerTap)="onMarkerTap($event)"
>
</MapView>

3. Manage

<MapView
  (ready)="onReady($event)"
  (mapTap)="onTap($event)"
  (mapLongPress)="onLongPress($event)"
  (markerTap)="onMarkerTap($event)"
>
</MapView>

3. To manage the mapping features, listen to the map view's ready event and get the reference to the GoogleMap instance from the event data.

Use @nativescript/google-maps with Vue #

1. In the app.ts file, register the plugin by passing its reference to the use() method to the app instance.

Vue #

import { createApp, registerElement } from 'nativescript-vue'
import GoogleMaps from '@nativescript/google-maps/vue'

import Home from './components/Home.vue'

const app = createApp(Home)
app.use(GoogleMaps)

2. Add the MapView component to the markup.

<MapView
  @ready="onReady"
  @mapTap="onTap"
  @mapLongPress="onLongPress"
  @markerTap="onMarkerTap"
/>

3. To manage the mapping features, listen to the map view's ready event and get the reference to the GoogleMap instance from the event data.

Control the camera #

To programmatically update the camera position, call the animateCamera() method on the GoogleMap object and pass it a CameraUpdate instance.

import { CameraUpdate } from '@nativescript/google-maps'

googleMap.animateCamera(
  CameraUpdate.fromCoordinate(
    {
      lat: -32.1234,
      lng: 125.1234
    },
    googleMap.cameraPosition.zoom
  )
)

Set the map type #

To set the map type, set the mapType property to one of the MapType options.

import { GoogleMap, MapType } from '@nativescript/google-maps'

map: GoogleMap
map.mapType = MapType.Hybrid

See CameraUpdate for more methods you can call and pass to the animateCamera() method.

Styling the map #

You can style the map's items, such as roads, parks, businesses, and other points of interest.

Styling works only on the normal map type. Styling does not affect indoor maps.

To style your map, use a JSON file generated by the Google Maps APIs Styling Wizard. In addition to changing the appearance of features, you can also hide features completely.

[
  {
    "featureType": "all",
    "stylers": [{ "color": "#C0C0C0" }]
  },
  {
    "featureType": "road.arterial",
    "elementType": "geometry",
    "stylers": [{ "color": "#CCFFFF" }]
  },
  {
    "featureType": "landscape",
    "elementType": "labels",
    "stylers": [{ "visibility": "off" }]
  }
]

To apply a custom style to your map you can set the mapStyle property on your GoogleMap object:

import { GoogleMap } from '@nativescript/google-maps'

map: GoogleMap
map.mapStyle = [
  {
    featureType: 'landscape',
    elementType: 'labels',
    stylers: [{ visibility: 'off' }]
  }
]

API #

MapView Class #

Properties #

The following properties are available for adjusting the camera view on initialization:

Events #

MapView provides the following events:

GoogleMap Object #

This class provides the mapping features and its instance is available from the MapView instance's ready event:

function onReady(event: MapReadyEvent) {
  const map: GoogleMap = event.map
}

Properties #

Methods #

Native Map Object #

GoogleMap gives you access to the platforms native map objects native | android | ios

consult the appropriate SDK reference on how to use it: iOS | Android

Camera Position #

The map's current camera position can be read from the cameraPosition property of a GoogleMap object.

CameraUpdate Class #

CameraUpdate provides multiple methods to create a target CameraPosition.

Projection #

A projection is used to translate between on screen location and geographic coordinates on the surface of the Earth.

UISettings Interface #

You can adjust the maps UI settings from the GoogleMap object by configuring the following properties of the uiSettings property:

MapType enum #

The Google Maps API offers the following five types of maps:

Markers #

Adding Markers #

You can create markers using the GoogleMap's object addMarker method by passing it a MarkerOptions object.

function addMarker(map: GoogleMap, markerOptions: MarkerOptions): Marker {
  return map.addMarker(markerOptions)
}

addMarker returns a Marker

Marker Object #

It implements the [MarkerOptions] interface and has the following additional methods.

MarkerOptions #

Coordinate #

Removing Markers #

To remove a marker from the map, call the removeMarker() method on the GoogleMap instance and pass it the marker to be removed.

function removeMarker(map: GoogleMap, marker: Marker) {
  map.removeMarker(marker)
}

Circles #

Adding Circles #

To add a circle to the map, call the addCircle() method and specify its properties with a CircleOptions object.

function addCircle(map: GoogleMap, circleOptions: CircleOptions): Circle {
  return map.addCircle(circleOptions)
}

CircleOptions #

Removing Circles #

You can remove a circle using the GoogleMap's removeCircle() method.

function removeCircle(map: GoogleMap, circle: Circle) {
  map.removeCircle(circle)
}

Polygons #

Adding Polygons #

You can create polygons using the GoogleMap's object addPolygon() method by passing in the specified PolygonOptions.

function addPolygon(map: GoogleMap, polygonOptions: PolygonOptions): Polygon {
  return map.addPolygon(polygonOptions)
}

PolygonOptions #

Removing Polygons #

You can remove a Polygon using the GoogleMap's removePolygon function, like so:

function removePolygon(map: GoogleMap, polygon: Polygon) {
  map.removePolygon(polygon)
}

Polylines #

Adding Polylines #

You can create Polylines using the GoogleMap's object addPolyline function by passing it a PolylineOptions object.

function addPolyline(map: GoogleMap, polylineOptions: PolylineOptions): Polyline {
  return map.addPolyline(polylineOptions)
}

PolylineOptions #

Removing Polylines #

You can remove a Polyline using the GoogleMap's removePolyline function, like so:

function removePolyline(map: GoogleMap, polyline: Polyline) {
  map.removePolyline(polyline)
}

Ground Overlays #

Adding Ground Overlays #

You can create Ground Overlays using the GoogleMap's object addGroundOverlay function by passing in the specified GroundOverlay Options.

function addGroundOverlay(
  map: GoogleMap,
  groundOverlayOptions: GroundOverlayOptions
): GroundOverlay {
  return map.addGroundOverlay(groundOverlayOptions)
}

GroundOverlayOptions #

Removing Ground Overlays #

You can remove a GroundOverlay using the GoogleMap's removeGroundOverlay function, like so:

function removeGroundOverlay(map: GoogleMap, groundOverlay: GroundOverlay) {
  map.removeGroundOverlay(groundOverlay)
}

Tile Overlays #

Adding Tile Overlays #

You can create Tile Overlays using the GoogleMap's object addTileOverlay function by passing in the specified TileOverlay Options.

function addTileOverlay(
  map: GoogleMap,
  tileOverlayOptions: TileOverlayOptions
): TileOverlay {
  return map.addTileOverlay(tileOverlayOptions)
}

TileOverlayOptions #

Setting tile overlay options after the tile overlay has been added to the map can have no effect on the tile overlay. To update the tile overlay, you may need to call clearTileCache().

Removing Tile Overlays #

You can remove a TileOverlay using the GoogleMap's removeTileOverlay function, like so:

function removeTileOverlay(map: GoogleMap, tileOverlay: TileOverlay) {
  map.removeTileOverlay(tileOverlay)
}

Tile Providers #

Tile providers are objects that provide tiles to be used in a Tile Overlay.

For example a UrlTileProvider can be created like so:

const tileProvider = new UrlTileProvider((x, y, z) => {
  return `https://tiles.example.com/${z}/${x}/${y}.png`
})

License #

Apache License Version 2.0