Flutter Maplibre GL

This Flutter plugin allows to show embedded interactive and customizable vector maps as a Flutter widget.

For the Android and iOS integration, we use maplibre-gl-native. For web, we rely on maplibre-gl-js. This project only supports a subset of the API exposed by these libraries.

This project is a fork of https://github.com/tobrun/flutter-mapbox-gl, replacing its usage of Mapbox GL libraries with the open source Maplibre GL libraries.

Please note that this project is community driven and is not affiliated with the company Mapbox.
It does use some of their amazing open source libraries/tools, though. Thank you, Mapbox, for all the open-source work you do!

Using the plugin in your project

This project is not yet available on pub.dev. You can use it by referencing it in your pubspec.yaml like this:

dependencies:
    ...
    maplibre_gl:
      git:
        url: https://github.com/m0nac0/flutter-maplibre-gl.git
        ref: main

This will get you the very latest changes from the main branch. You can replace main with the name of the latest release to get a well-tested version.

Documentation is available on the docs branch in the doc/api folder and automatically updated on each push to the main branch. You can easily view the documentation / API reference here.

Compared to flutter-mapbox-gl, the only breaking API changes are:

• MapboxMap <--> MaplibreMap
• MapboxMapController <--> MaplibreMapController

iOS

To use this plugin with iOS, you may need to add two lines to your Podfile, as shown in the example app: https://github.com/m0nac0/flutter-maplibre-gl/blob/d23b2297f775ed6e686c31ee2e2318cc28c73a5e/example/ios/Podfile#L5-L6 ... and run pod update

Supported API

Feature	Android	iOS	Web
Style	✅	✅	✅
Camera	✅	✅	✅
Gesture	✅	✅	✅
User Location	✅	✅	✅
Symbol	✅	✅	✅
Circle	✅	✅	✅
Line	✅	✅	✅
Fill	✅	✅	✅

Running the example app

• Install Flutter and validate its installation with flutter doctor
• Clone the repository with git clone [email protected]:m0nac0/flutter-maplibre-gl.git
• Connect a mobile device or start an emulator, simulator or chrome
• Run the app with cd flutter-maplibre-gl/example && flutter packages get && flutter run

Map Styles

Map styles can be supplied by setting the styleString in the MapOptions. The following formats are supported:

1. Passing the URL of the map style. This should be a custom map style served remotely using a URL that start with 'http(s)://'
2. Passing the style as a local asset. Create a JSON file in the assets and add a reference in pubspec.yml. Set the style string to the relative path for this asset in order to load it into the map.
3. Passing the style as a local file. create an JSON file in app directory (e.g. ApplicationDocumentsDirectory). Set the style string to the absolute path of this JSON file.
4. Passing the raw JSON of the map style. This is only supported on Android.

Tile sources requiring an API key

If your tile source requires an API key, we recomend directly specifying a source url with the API key included. For example:

https://tiles.example.com/{z}/{x}/{y}.vector.pbf?api_key={your_key}

Location features

Android

Add the ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission in the application manifest android/app/src/main/AndroidManifest.xml to enable location features in an Android application:

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

Starting from Android API level 23 you also need to request it at runtime. This plugin does not handle this for you. The example app uses the flutter 'location' plugin for this.

iOS

To enable location features in an iOS application:

If you access your users' location, you should also add the following key to ios/Runner/Info.plist to explain why you need access to their location data:

xml ...
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>[Your explanation here]</string>

A possible explanation could be: "Shows your location on the map".

Documentation

This README file currently houses most of the documentation for this Flutter project. Please visit https://github.com/maplibre/maplibre-gl-js and https://github.com/maplibre/maplibre-gl-native for more information about the Maplibre libraries.

Getting Help

• Need help with your code?: Check the discussions on this repo or open a new one. Or look for previous questions on the #maplibre tag — or ask a new question.
• Have a bug to report? Open an issue. If possible, include a full log and information which shows the issue.
• Have a feature request? Open an issue. Tell us what the feature should do and why you want the feature.

Avoid Android UnsatisfiedLinkError

Update buildTypes in android\app\build.gradle

buildTypes {
    release {
        // other configs
        ndk {
            abiFilters 'armeabi-v7a','arm64-v8a','x86_64', 'x86'
        }
    }
}

Contributing

Feedback and contributions are very welcome!