bluetooth_helper 0.1.5

A Bluetooth Flutter plugin，bluetooth scan、connect、discover、read、write...。

example/lib/main.dart

import 'dart:async';
import 'dart:io';

import 'package:bluetooth_helper/bluetooth_device.dart';
import 'package:bluetooth_helper/bluetooth_helper.dart';
import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _readCharacteristic, _writeCharacteristic;
  BluetoothDevice _device;

  Timer _timer;
  List<BluetoothDevice> _deviceList;

  @override
  void initState() {
    super.initState();
    BluetoothHelper.enableDebug();

    if (Platform.isAndroid) {
//      _device = BluetoothDevice.create("CC:98:3E:9B:60:0C", "ZLY_2003020101351");
      _device =
          BluetoothDevice.create("D8:CB:BD:91:D5:D5", "ZLY_2003020101038");
    } else {
      _device = BluetoothDevice.create(
          "ED293FE6-090B-5EF3-23FE-E0551D06C2AD", "ZLY_2002020101020");
    }
    _device.eventCallback = (BluetoothEvent event) {
      print("event: $event");
    };
//    _timer = Timer.periodic(Duration(seconds: 20), (_timer) {
////      BluetoothHelper.me.scan().then((List<BluetoothDevice> _scanResult) {
////        print("${_timer.tick} scanResult: $_scanResult");
////        if (!mounted) return;
////        setState(() {
////          _deviceList = _scanResult;
////        });
////      });
//      print("device isConnected: ${_device.isConnected}");
//    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Column(
          children: <Widget>[
            Text('Bluetooth Test...'),
            Row(
              children: <Widget>[
                RaisedButton(
                  child: Text("locationIsEnable"),
                  onPressed: () {
                    BluetoothHelper.locationIsEnable
                        .then((_res) => print("locationIsEnable: $_res"));
                  },
                ),
                RaisedButton(
                  child: Text("stateLastChangeTime"),
                  onPressed: () {
                    BluetoothHelper.stateLastChangeTime
                        .then((_res) => print("stateLastChangeTime: $_res"));
                  },
                ),
              ],
            ),
            Row(
              children: <Widget>[
                RaisedButton(
                  child: Text("scan"),
                  onPressed: () => BluetoothHelper.me
//                      .scan(timeout: 15)
                      .scan(deviceId: "E4:E6:CC:B5:49:DF", timeout: 15)
                      .then((List<BluetoothDevice> _res) {
                    for (BluetoothDevice _device in _res) {
                      print("scan device: $_device");
                    }
                  }),
                ),
                RaisedButton(
                  child: Text("connect"),
                  onPressed: () => this
                      ._device
                      .connect()
                      .then((_res) => print("connect result: $_res"))
                      .catchError((_e) {
                    print("error: $_e");
                    this._device.disconnect();
                  }),
                ),
                RaisedButton(
                  child: Text("disconnect"),
                  onPressed: () => this
                      ._device
                      .disconnect()
                      .then((_res) => print("disconnect result: $_res")),
                )
              ],
            ),
            Row(
              children: <Widget>[
                RaisedButton(
                  child: Text("discoverCharacteristics"),
                  onPressed: () async {
                    List _characteristics =
                        await _device.discoverCharacteristics(3);
                    print("discoverCharacteristics: $_characteristics");
                    for (String _characteristic in _characteristics) {
                      if (0 == _characteristic.indexOf("00001526-")) {
                        _readCharacteristic = _characteristic;
                      } else if (0 == _characteristic.indexOf("00001525-")) {
                        _writeCharacteristic = _characteristic;
                      }
                    }
                    print("read characteristic: $_readCharacteristic");
                    print("write characteristic: $_writeCharacteristic");
                    if (null != _readCharacteristic) {
                      bool _setResult =
                          await _device.setCharacteristicNotification(
                              _readCharacteristic, true);
                      print("setResult: $_setResult");
                    }
                  },
                ),
                RaisedButton(
                  child: Text("read"),
                  onPressed: () => _device
                      .characteristicRead(_readCharacteristic)
                      .then((_res) => print("read result: $_res")),
                ),
                RaisedButton(
                  child: Text("write"),
                  onPressed: () => _device.characteristicWrite(
                      _writeCharacteristic, [
                    1,
                    1,
                    1,
                    1,
                    1,
                    1,
                    1,
                    1,
                    1,
                    1
                  ]).then((_res) => print("write result: $_res")),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}