beacon_util 0.0.1

This is a Flutter plugin project for iOS that handles Bluetooth beacon scanning and management.

example/lib/main.dart

import 'package:beacon_util/beacon.dart';
import 'package:beacon_util/beacon_message.dart';
import 'package:beacon_util/beacon_plugin.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _BeaconStateText extends StatefulWidget {
  const _BeaconStateText();

  @override
  State<_BeaconStateText> createState() => _BeaconStateTextState();
}

class _BeaconStateTextState extends State<_BeaconStateText> {
  BeaconState beaconState = BeaconState.initial;

  @override
  void initState() {
    BeaconPlugin.beaconStateController.stream.listen((state) {
      if (beaconState == state) return; // Avoid unnecessary rebuilds
      setState(() {
        beaconState = state;
      });
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Row(
      spacing: 10,
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        Text(
          beaconState.name,
          style: const TextStyle(fontSize: 16),
          textAlign: TextAlign.center,
        ),
        Visibility(
          visible: beaconState == BeaconState.scanning,
          child: SizedBox(
            width: 10,
            height: 10,
            child: CircularProgressIndicator(
              strokeWidth: 3,
              color: Colors.blue,
            ),
          ),
        ),
      ],
    );
  }
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          child: Column(
            spacing: 20,
            children: [
              const SizedBox.shrink(),
              _buttonsView(),
              _beaconStateView(),
              _beaconListView(),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buttonsView() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        TextButton(
          style: TextButton.styleFrom(
            backgroundColor: Colors.blue.withAlpha(200),
            foregroundColor: Colors.white,
          ),
          onPressed: BeaconPlugin.startScan,
          child: const Text('scan'),
        ),
        TextButton(
          style: TextButton.styleFrom(
            backgroundColor: Colors.pink.withAlpha(200),
            foregroundColor: Colors.white,
          ),
          onPressed: BeaconPlugin.stopScan,
          child: const Text('stop'),
        ),
      ],
    );
  }

  Widget _beaconStateView() {
    return Padding(
      padding: const EdgeInsets.only(left: 16),
      child: Row(
        spacing: 10,
        children: [
          Text('Beacon State:', style: TextStyle(fontSize: 16)),
          _BeaconStateText(),
        ],
      ),
    );
  }

  Widget _beaconListView() {
    return StreamBuilder<List<Beacon>>(
      stream: BeaconPlugin.receiveBeacons(),
      builder: (context, snapshot) {
        if (snapshot.hasData) {
          final beacons = snapshot.data!;
          if (beacons.isEmpty) {
            return const Text('No beacons found.');
          }
          return Expanded(
            child: ListView.separated(
              itemCount: beacons.length,
              itemBuilder: (context, index) {
                final beacon = beacons[index];
                return Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'Name: ${beacon.name}',
                        style: const TextStyle(fontSize: 16),
                      ),
                      Text(
                        'UUID: ${beacon.uuid}',
                        style: const TextStyle(fontSize: 14),
                      ),
                      Text(
                        'Major: ${beacon.major}, Minor: ${beacon.minor}, RSSI: ${beacon.rssi}',
                        style: const TextStyle(fontSize: 10),
                      ),
                    ],
                  ),
                );
              },
              separatorBuilder: (context, index) => const Divider(),
            ),
          );
        } else if (snapshot.hasError) {
          return Text('Error: ${snapshot.error}');
        }
        return SizedBox.shrink();
      },
    );
  }
}