flutter_beacon

Flutter plugin to work with iBeacons.

An hybrid iBeacon scanner SDK for Flutter plugin. Supports Android API 18+ and iOS 8+.

Features:

  • Automatic permission management
  • Ranging iBeacons

Installation

Add to pubspec.yaml:

dependencies:
  flutter_beacon: ^0.1.1

Setup specific for Android

Nothing.

Setup specific for iOS

In order to use beacons related features, apps are required to ask the location permission. It's a two step process:

  1. Declare the permission the app requires in configuration files
  2. Request the permission to the user when app is running (the plugin can handle this automatically)

The needed permissions in iOS is when in use.

For more details about what you can do with each permission, see:
https://developer.apple.com/documentation/corelocation/choosing_the_authorization_level_for_location_services

Permission must be declared in ios/Runner/Info.plist:

<dict>
  <!-- When in use -->
  <key>NSLocationWhenInUseUsageDescription</key>
  <string>Reason why app needs location</string>
  ...
</dict>

How-to

Ranging APIs are designed as reactive streams.

  • The first subscription to the stream will start the ranging

Initializing Library

try {
  await flutterBeacon.initializeScanning;
} on PlatformException {
  // library failed to initialize, check code and message
}

Ranging beacons

final regions = <Region>[];

if (Platform.isIOS) {
  regions.add(Region(
      identifier: 'Apple Airlocate',
      proximityUUID: 'E2C56DB5-DFFB-48D2-B060-D0F5A71096E0'));
} else {
  // android platform, it can ranging out of beacon that filter all of Proximity UUID
  regions.add(Region(identifier: 'com.beacon'));
}

flutterBeacon.ranging(regions).listen((RangingResult result) {
  // result contains a region and list of beacons found
  // list can be empty if no matching beacons were found in range
});

Under the hood

  • iOS uses native iOS CoreLocation
  • Android uses the third-party library android-beacon-library (Apache License 2.0)

Author

Flutter Beacon plugin is developed by Alann Maulana. You can contact me at alann.maulana@outlook.com.

License

Apache License 2.0

Libraries

flutter_beacon

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. [...]