Flutter UHF通信插件c72_uhf_plugin的使用

c72_uhf_plugin

c72 plugin

Getting Started

本项目是一个Flutter的插件包，用于实现Android和/或iOS平台上的特定功能。此插件包的主要目的是通过Flutter应用程序与硬件设备进行通信。

有关Flutter开发的帮助信息，请访问Flutter官方文档，其中包含教程、示例、移动开发指南以及完整的API参考。

使用示例

以下是一个完整的示例，展示如何在Flutter应用程序中使用c72_uhf_plugin插件来实现UHF通信。

示例代码

import 'dart:developer';

import 'package:audioplayers/audioplayers.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:c72_uhf_plugin/c72_uhf_plugin.dart';

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

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

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final audioPlayer = AudioPlayer();
  final _c72UhfPlugin = C72UhfPlugin();

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  Future<void> initPlatformState() async {
    // 监听连接状态流
    _c72UhfPlugin.connectedStatusStream
        .receiveBroadcastStream()
        .listen(updateIsConnected);
    // 监听标签状态流
    _c72UhfPlugin.tagsStatusStream.receiveBroadcastStream().listen(updateTags);
    // 设置观察按钮
    _c72UhfPlugin.setObserveButton(true);
    // 连接设备
    await _c72UhfPlugin.connect;
    // 设置工作区域
    await _c72UhfPlugin.setWorkArea('2');
    // 设置功率级别
    await _c72UhfPlugin.setPowerLevel('10');

    if (!mounted) return;
  }

  List<TagEpc> _data = [];
  void updateTags(dynamic result) {
    log('update tags');
    setState(() {
      _data = TagEpc.parseTags(result);
    });
  }

  void updateIsConnected(dynamic isConnected) {
    log('connected $isConnected');
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('UHF Plugin Example App'),
        ),
        body: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            // 连接按钮
            ElevatedButton(
              child: const Text(
                'Connect',
                style: TextStyle(color: Colors.white),
              ),
              onPressed: () async {
                await _c72UhfPlugin.connect;
              },
            ),
            // 单次读取按钮
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: <Widget>[
                Expanded(
                  flex: 1,
                  child: ElevatedButton(
                    child: const Text(
                      'Single reading',
                      style: TextStyle(color: Colors.white),
                    ),
                    onPressed: () async {
                      final isStarted = await _c72UhfPlugin.startSingle;
                      log('Start single $isStarted');
                    },
                  ),
                ),
                const SizedBox(
                  width: 20,
                ),
                // 连续读取按钮
                Expanded(
                  flex: 1,
                  child: ElevatedButton(
                    child: const Text(
                      'Continuous reading',
                      style: TextStyle(color: Colors.white),
                    ),
                    onPressed: () async {
                      final isStarted = await _c72UhfPlugin.startContinuous;
                      log('Start Continuous $isStarted');
                    },
                  ),
                ),
              ],
            ),
            // 停止按钮
            ElevatedButton(
              child: const Text(
                'Call Stop',
                style: TextStyle(color: Colors.white),
              ),
              onPressed: () async {
                final isStopped = await _c72UhfPlugin.stop;
                log('Stop $isStopped');
              },
            ),
            // 清除数据按钮
            ElevatedButton(
              child: const Text(
                'Clear',
                style: TextStyle(color: Colors.white),
              ),
              onPressed: () async {
                await _c72UhfPlugin.clearData;
                setState(() {
                  _data.clear();
                });
              },
            ),
            // 显示标签数量
            Text('All tag: ${_data.length}'),
            // 显示所有标签数据
            Expanded(
              child: ListView(
                children: _data
                    .map(
                      (TagEpc tag) => Card(
                        color: Colors.blue.shade50,
                        child: Container(
                          width: 330,
                          alignment: Alignment.center,
                          padding: const EdgeInsets.all(8.0),
                          child: Text(
                            'Tag ${tag.epc} Count:${tag.count}',
                            style: TextStyle(color: Colors.blue.shade800),
                          ),
                        ),
                      ),
                    )
                    .toList(),
              ),
            ),
          ],
        ),
      ),
    );
  }
}