flutter_google_maps

flutter_google_maps

A Flutter plugin for integrating Google Maps in iOS, Android and Web applications. It is a wrapper of google_maps_flutter for Mobile and google_maps for Web.

Getting Started

• Get an API key at https://cloud.google.com/maps-platform/.

• Enable Google Map SDK for each platform.

  • Go to Google Developers Console.
  • Choose the project that you want to enable Google Maps on.
  • Select the navigation menu and then select "Google Maps".
  • Select "APIs" under the Google Maps menu.
  • To enable Google Maps for Android, select "Maps SDK for Android" in the "Additional APIs" section, then select "ENABLE".
  • To enable Google Maps for iOS, select "Maps SDK for iOS" in the "Additional APIs" section, then select "ENABLE".
  • Make sure the APIs you enabled are under the "Enabled APIs" section.

• You can also find detailed steps to get start with Google Maps Platform here.

Web

<body>
  <script src="https://maps.googleapis.com/maps/api/js?key=API_KEY"></script>
  <script src="main.dart.js" type="application/javascript"></script>
</body>

Android

Specify your API key in the application manifest android/app/src/main/AndroidManifest.xml:

<manifest ...
  <application ...
    <meta-data android:name="com.google.android.geo.API_KEY"
               android:value="YOUR KEY HERE"/>

iOS

Specify your API key in the application delegate ios/Runner/AppDelegate.m:

#include "AppDelegate.h"
#include "GeneratedPluginRegistrant.h"
#import "GoogleMaps/GoogleMaps.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  [GMSServices provideAPIKey:@"YOUR KEY HERE"];
  [GeneratedPluginRegistrant registerWithRegistry:self];
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}
@end

Or in your swift code, specify your API key in the application delegate ios/Runner/AppDelegate.swift:

import UIKit
import Flutter
import GoogleMaps

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GMSServices.provideAPIKey("YOUR KEY HERE")
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

Opt-in to the embedded views preview by adding a boolean property to the app's Info.plist file with the key io.flutter.embedded_views_preview and the value YES.

Android/iOS Directions API

Add in your main.dart within main function GoogleMap.init('API_KEY'); before running the app.

void main() {
  GoogleMap.init('API_KEY');
  WidgetsFlutterBinding.ensureInitialized();
  runApp(MyApp());
}

For more info about mobile map setup, view google_maps_flutter plugin.

Add GoogleMap Widget

import 'package:flutter/material.dart';
import 'package:flutter_google_maps/flutter_google_maps.dart';

...
GlobalKey<GoogleMapStateBase> _key = GlobalKey<GoogleMapStateBase>();

@override
Widget build(BuildContext context) => GoogleMap(
  key: _key,
),
...

And now you're ready to go.

Examples

GoogleMap widget can be configured with:

Property	Type	Description
initialPosition	GeoCoord	The initial position of the map's camera
initialZoom	double	The initial zoom of the map's camera
mapType	MapType	Type of map tiles to be rendered
minZoom	double	The preferred minimum zoom level or null, if unbounded from below
maxZoom	double	The preferred maximum zoom level or null, if unbounded from above
mapStyle	String	Sets the styling of the base map
mobilePreferences	MobileMapPreferences	Set of mobile map preferences
webPreferences	WebMapPreferences	Set of web map preferences
interactive	bool	Defines whether map is interactive or not
onTap	ValueChanged	Called every time a GoogleMap is tapped
onLongPress	ValueChanged	Called every time a GoogleMap is long pressed (for web when right mouse clicked)
markers	Set	Markers to be placed on the map

MapType is one of following variants:

• none -> do not display map tiles
• roadmap -> normal tiles (traffic and labels, subtle terrain information)
• satellite -> satellite imaging tiles (aerial photos)
• terrain -> terrain tiles (indicates type and height of terrain)
• hybrid -> hybrid tiles (satellite images with some labels/overlays)

MobileMapPreferences can be configured with:

Property	Type	Description
compassEnabled	bool	True if the map should show a compass when rotated
mapToolbarEnabled	bool	True if the map should show a toolbar when you interact with the map. Android only
myLocationEnabled	bool	True if a "My Location" layer should be shown on the map
myLocationButtonEnabled	bool	Enables or disables the my-location button
indoorViewEnabled	bool	Enables or disables the indoor view from the map
trafficEnabled	bool	Enables or disables the traffic layer of the map
buildingsEnabled	bool	Enables or disables showing 3D buildings where available
padding	EdgeInsets	Padding to be set on mapdetails
rotateGesturesEnabled	bool	True if the map view should respond to rotate gestures
scrollGesturesEnabled	bool	True if the map view should respond to scroll gestures
zoomGesturesEnabled	bool	True if the map view should respond to zoom gestures
tiltGesturesEnabled	bool	True if the map view should respond to tilt gestures

WebMapPreferences can be configured with:

Property	Type	Description
streetViewControl	bool	Enables or disables streetViewControl
fullscreenControl	bool	Enables or disables fullscreenControl
mapTypeControl	bool	Enables or disables mapTypeControl
scrollwheel	bool	Enables or disables scrollwheel
panControl	bool	Enables or disables panControl
overviewMapControl	bool	Enables or disables overviewMapControl
rotateControl	bool	Enables or disables rotateControl
scaleControl	bool	Enables or disables scaleControl
zoomControl	bool	Enables or disables zoomControl
dragGestures	bool	Enables or disables flutter drag gestures

To prepare for interacting with GoogleMap you will need to:

Create a key and assign it to the GoogleMap widget.

GoogleMap widget has 2 static methods, they are:

• MapOperations of(GlobalKey key);

  Gets [MapOperations] interface via provided key of [GoogleMapStateBase] state.

• void init(String apiKey);

  Initializer of [GoogleMap]. Required if Directions API will be needed. For other cases, could be ignored.

To interact with GoogleMap you'll need to:

Use static of method

Here's list of interactions:

• Move camera to the new bounds

  void moveCameraBounds(
    GeoCoordBounds newBounds, {
    double padding = 0,
    bool animated = true,
    bool waitUntilReady = true,
  });
  

• Move camera to the new coordinates

  void moveCamera(
    GeoCoord latLng, {
    bool animated = true,
    bool waitUntilReady = true,
    double zoom,
  });
  

• Zoom camera

  void zoomCamera(
    double zoom, {
    bool animated = true,
    bool waitUntilReady = true,
  });
  

• Get center coordinates of the map

  FutureOr<GeoCoord> get center;
  

• Change Map Style.

  The style string can be generated using map style tool. Also, refer iOS and Android style reference for more information regarding the supported styles.

  void changeMapStyle(String mapStyle);
  

• Add marker to the map by given [position]

  void addMarkerRaw(
    GeoCoord position, {
    String label,
    String icon,
    String info,
    ValueChanged<String> onTap,
    VOidCallback onInfoWindowTap,
  });
  

Please note: [icon] could be a path to an image asset or it could be an instance of ByteString.

• Add marker to the map by given [marker] object

  void addMarker(Marker marker);
  

• Remove marker from the map by given [position]

  void removeMarker(GeoCoord position);
  

• Remove all markers from the map

  void clearMarkers();
  

• Add direction to the map by given [origin] and [destination] coordinates

  void addDirection(
    dynamic origin,
    dynamic destination, {
    String startLabel,
    String startIcon,
    String startInfo,
    String endLabel,
    String endIcon,
    String endInfo,
  });
  

• Remove direction from the map by given [origin] and [destination] coordinates

  void removeDirection(dynamic origin, dynamic destination);
  

• Remove all directions from the map

  void clearDirections();
  

• Add polygon to the map by given [id] and [points]

  void addPolygon(
    String id,
    Iterable<GeoCoord> points, {
    ValueChanged<String> onTap,
    Color strokeColor = const Color(0x000000),
    double strokeOpacity = 0.8,
    double strokeWidth = 1,
    Color fillColor = const Color(0x000000),
    double fillOpacity = 0.35,
  });
  

• Edit polygon on the map by given [id] and [points]

  void editPolygon(
    String id,
    Iterable<GeoCoord> points, {
    ValueChanged<String> onTap,
    Color strokeColor = const Color(0x000000),
    double strokeOpacity = 0.8,
    double strokeWeight = 1,
    Color fillColor = const Color(0x000000),
    double fillOpacity = 0.35,
  });
  

• Remove polygon from the map by given [id].

  void removePolygon(String id);
  

• Remove all polygones from the map.

  void clearPolygons();
  

Feature requests and Bug reports

Feel free to post a feature requests or report a bug here.

TODO

• Add circles support
• Add polyline support