flutter_ble_peripheral 0.6.0

flutter_ble_peripheral: ^0.6.0 copied to clipboard

example/lib/main.dart

/*
 * Copyright (c) 2020. Julian Steenbakker.
 * All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */

import 'package:flutter/material.dart';
import 'package:flutter_ble_peripheral/flutter_ble_peripheral.dart';
import 'package:permission_handler/permission_handler.dart';

void main() => runApp(const FlutterBlePeripheralExample());

class FlutterBlePeripheralExample extends StatefulWidget {
  const FlutterBlePeripheralExample({Key? key}) : super(key: key);

  @override
  _FlutterBlePeripheralExampleState createState() =>
      _FlutterBlePeripheralExampleState();
}

class _FlutterBlePeripheralExampleState
    extends State<FlutterBlePeripheralExample> {
  final FlutterBlePeripheral blePeripheral = FlutterBlePeripheral();
  final AdvertiseData _data = AdvertiseData(
    uuid: 'bf27730d-860a-4e09-889c-2d8b6a9e0fe7',
    manufacturerId: 1234,
    manufacturerData: [1, 2, 3, 4, 5, 6],
  );

  bool _isSupported = false;

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  Future<void> initPlatformState() async {
    final isSupported = await blePeripheral.isSupported();
    setState(() {
      _isSupported = isSupported;
    });
  }

  void _toggleAdvertise() async {
    if (await blePeripheral.isAdvertising()) {
      await blePeripheral.stop();
    } else {
      await blePeripheral.start(_data);
    }
  }

  void _requestPermissions() async {
    await Permission.bluetooth.shouldShowRequestRationale;

    Map<Permission, PermissionStatus> statuses = await [
      Permission.bluetooth,
      Permission.bluetoothAdvertise,
      Permission.bluetoothConnect,
      Permission.bluetoothScan,
      Permission.location,
    ].request();
    for (final status in statuses.keys) {
      if (statuses[status] == PermissionStatus.granted) {
        debugPrint('$status permission granted');
      } else if (statuses[status] == PermissionStatus.denied) {
        debugPrint(
            '$status denied. Show a dialog with a reason and again ask for the permission.');
      } else if (statuses[status] == PermissionStatus.permanentlyDenied) {
        debugPrint(
            '$status permanently denied. Take the user to the settings page.');
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Flutter BLE Peripheral'),
        ),
        body: Center(
            child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: <Widget>[
              Text('Is supported: $_isSupported'),
              StreamBuilder(
                  stream: blePeripheral.getStateChanged(),
                  initialData: PeripheralState.unknown,
                  builder:
                      (BuildContext context, AsyncSnapshot<dynamic> snapshot) {
                    return Text('State: ${snapshot.data}');
                  }),
              StreamBuilder(
                  stream: blePeripheral.getDataReceived(),
                  initialData: 'None',
                  builder:
                      (BuildContext context, AsyncSnapshot<dynamic> snapshot) {
                    return Text('Data received: ${snapshot.data}');
                  }),
              Text('Current UUID: ${_data.uuid}'),
              MaterialButton(
                  onPressed: _toggleAdvertise,
                  child: Text(
                    'Toggle advertising',
                    style: Theme.of(context)
                        .primaryTextTheme
                        .button!
                        .copyWith(color: Colors.blue),
                  )),
              MaterialButton(
                  onPressed: _requestPermissions,
                  child: Text(
                    'Request Permissions',
                    style: Theme.of(context)
                        .primaryTextTheme
                        .button!
                        .copyWith(color: Colors.blue),
                  )),
            ])),
      ),
    );
  }
}