Google Maps for Flutter (Developers Preview)

pub package

A Flutter plugin that provides a Google Maps widget.

Developers Preview Status

The plugin relies on Flutter's new mechanism for embedding Android and iOS views. As that mechanism is currently in a developers preview, this plugin should also be considered a developers preview.

Known issues are tagged with the platform-views and/or maps labels.

To use this plugin on iOS you need to opt-in for 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.

The API exposed by this plugin is not yet stable, and we expect some breaking changes to land soon.

Usage

To use this plugin, add google_maps_flutter as a dependency in your pubspec.yaml file.

Getting Started

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

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: [UIApplicationLaunchOptionsKey: 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.

Both

You can now add a GoogleMap widget to your widget tree.

The map view can be controlled with the GoogleMapController that is passed to the GoogleMap's onMapCreated callback.

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

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(title: const Text('Google Maps demo')),
      body: MapsDemo(),
    ),
  ));
}

class MapsDemo extends StatefulWidget {
  @override
  State createState() => MapsDemoState();
}

class MapsDemoState extends State<MapsDemo> {

  GoogleMapController mapController;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(15.0),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: <Widget>[
          Center(
            child: SizedBox(
              width: 300.0,
              height: 200.0,
              child: GoogleMap(
                onMapCreated: _onMapCreated,
              ),
            ),
          ),
          RaisedButton(
            child: const Text('Go to London'),
            onPressed: mapController == null ? null : () {
              mapController.animateCamera(CameraUpdate.newCameraPosition(
                const CameraPosition(
                  bearing: 270.0,
                  target: LatLng(51.5160895, -0.1294527),
                  tilt: 30.0,
                  zoom: 17.0,
                ),
              ));
            },
          ),
        ],
      ),
    );
  }

  void _onMapCreated(GoogleMapController controller) {
    setState(() { mapController = controller; });
  }
}

See the example directory for a complete sample app.

Libraries

google_maps_flutter

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]