Flutter设备控制插件lanio_la5r_controller的使用

Flutter设备控制插件lanio_la5r_controller的使用

lanio_la5r_controller 是一个用于控制 LA-5T2S 设备的 Flutter 插件。该插件允许开发者通过网络与设备进行通信,并实现对设备状态的读取和设置。

以下是一个完整的示例代码,展示如何使用 lanio_la5r_controller 插件来控制 LA-5T2S 设备:

import 'package:flutter/material.dart';
import 'package:lanio_la5r_controller/lanio_la5r_controller.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DeviceControlScreen(),
    );
  }
}

class DeviceControlScreen extends StatefulWidget {
  @override
  _DeviceControlScreenState createState() => _DeviceControlScreenState();
}

class _DeviceControlScreenState extends State<DeviceControlScreen> {
  String deviceInfo = "等待获取设备信息";
  List<bool> pinStates = [false, false, false, false, false];

  Future<void> fetchDeviceInfo() async {
    final lanio = Lanio(address: '192.168.10.91', port: 10003);
    final info = await lanio.deviceInfo;
    setState(() {
      deviceInfo = info;
    });
  }

  Future<void> setPinStates() async {
    final lanio = Lanio(address: '192.168.10.91', port: 10003);
    await lanio.setPins(pinStates.map((state) => state).toList());
    final pins = await lanio.pins;
    setState(() {
      pinStates = pins;
    });
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('LA-5T2S 控制器'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          children: [
            Text(
              '设备信息:',
              style: TextStyle(fontSize: 18),
            ),
            SizedBox(height: 10),
            Text(deviceInfo),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () {
                setPinStates();
              },
              child: Text('更新引脚状态'),
            ),
            SizedBox(height: 20),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: [
                Text('DO1: ${pinStates[0]}'),
                Text('DO2: ${pinStates[1]}'),
                Text('DO3: ${pinStates[2]}'),
                Text('DO4: ${pinStates[3]}'),
                Text('DO5: ${pinStates[4]}'),
              ],
            ),
          ],
        ),
      ),
    );
  }
}

说明:

  1. 依赖引入:确保在 pubspec.yaml 文件中添加了 lanio_la5r_controller 插件依赖。
    dependencies:
      lanio_la5r_controller: ^1.0.0
    

更多关于Flutter设备控制插件lanio_la5r_controller的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter设备控制插件lanio_la5r_controller的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


lanio_la5r_controller 是一个用于控制 LANIO LA5R 设备的 Flutter 插件。以下是如何在 Flutter 项目中使用该插件的基本步骤:

1. 添加依赖

首先,你需要在 pubspec.yaml 文件中添加 lanio_la5r_controller 插件的依赖。

dependencies:
  flutter:
    sdk: flutter
  lanio_la5r_controller: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来获取依赖。

2. 导入插件

在你的 Dart 文件中导入 lanio_la5r_controller 插件:

import 'package:lanio_la5r_controller/lanio_la5r_controller.dart';

3. 初始化控制器

在使用插件之前,你需要初始化控制器:

LanioLa5rController _controller = LanioLa5rController();

4. 连接设备

使用 connect 方法来连接 LANIO LA5R 设备。你需要提供设备的 IP 地址和端口号。

Future<void> connectToDevice() async {
  try {
    await _controller.connect('192.168.1.100', 8080);
    print('Connected to device');
  } catch (e) {
    print('Failed to connect: $e');
  }
}

5. 发送控制命令

你可以使用 sendCommand 方法发送控制命令到设备。

Future<void> sendControlCommand() async {
  try {
    String command = 'TURN_ON_LED';
    String response = await _controller.sendCommand(command);
    print('Response from device: $response');
  } catch (e) {
    print('Failed to send command: $e');
  }
}

6. 断开连接

当你不再需要控制设备时,记得断开连接:

Future<void> disconnectFromDevice() async {
  try {
    await _controller.disconnect();
    print('Disconnected from device');
  } catch (e) {
    print('Failed to disconnect: $e');
  }
}

7. 处理异常

在实际使用中,你可能会遇到各种异常情况(如网络问题、设备未响应等),因此建议在使用插件时进行适当的异常处理。

8. 示例代码

以下是一个完整的示例代码,展示了如何连接、发送命令和断开连接:

import 'package:flutter/material.dart';
import 'package:lanio_la5r_controller/lanio_la5r_controller.dart';

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DeviceControlScreen(),
    );
  }
}

class DeviceControlScreen extends StatefulWidget {
  [@override](/user/override)
  _DeviceControlScreenState createState() => _DeviceControlScreenState();
}

class _DeviceControlScreenState extends State<DeviceControlScreen> {
  LanioLa5rController _controller = LanioLa5rController();

  Future<void> connectToDevice() async {
    try {
      await _controller.connect('192.168.1.100', 8080);
      print('Connected to device');
    } catch (e) {
      print('Failed to connect: $e');
    }
  }

  Future<void> sendControlCommand() async {
    try {
      String command = 'TURN_ON_LED';
      String response = await _controller.sendCommand(command);
      print('Response from device: $response');
    } catch (e) {
      print('Failed to send command: $e');
    }
  }

  Future<void> disconnectFromDevice() async {
    try {
      await _controller.disconnect();
      print('Disconnected from device');
    } catch (e) {
      print('Failed to disconnect: $e');
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('LANIO LA5R Controller'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: connectToDevice,
              child: Text('Connect to Device'),
            ),
            ElevatedButton(
              onPressed: sendControlCommand,
              child: Text('Send Control Command'),
            ),
            ElevatedButton(
              onPressed: disconnectFromDevice,
              child: Text('Disconnect from Device'),
            ),
          ],
        ),
      ),
    );
  }
}
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