鸿蒙Next如何集成flutter_blue_plus

在鸿蒙Next系统上开发应用时,如何正确集成flutter_blue_plus插件实现蓝牙功能?目前按照Flutter官方文档配置后,插件在鸿蒙环境下无法正常初始化,日志显示找不到原生平台适配代码。是否需要针对鸿蒙系统进行特殊适配?具体需要修改哪些配置文件或添加哪些依赖?有没有成功案例可以参考?

2 回复

鸿蒙Next集成flutter_blue_plus?简单!先确保你的鸿蒙项目支持Flutter,然后在pubspec.yaml里添加flutter_blue_plus依赖。接着,在代码里import,初始化蓝牙适配器,开始扫描设备。记住:鸿蒙的权限配置别漏了蓝牙权限!搞定后,你的应用就能愉快地和蓝牙设备玩耍啦~

更多关于鸿蒙Next如何集成flutter_blue_plus的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


在鸿蒙Next中集成flutter_blue_plus需要结合OpenHarmony的蓝牙API和Flutter插件机制。以下是实现步骤:

  1. 环境准备

    • 安装OpenHarmony SDK和Flutter SDK
    • 创建Flutter项目并添加依赖:
    dependencies:
      flutter_blue_plus: ^1.0.0
    
  2. 配置鸿蒙权限module.json5中添加蓝牙权限:

    {
      "module": {
        "requestPermissions": [
          {
            "name": "ohos.permission.USE_BLUETOOTH"
          },
          {
            "name": "ohos.permission.DISCOVER_BLUETOOTH"
          },
          {
            "name": "ohos.permission.MANAGE_BLUETOOTH"
          }
        ]
      }
    }
    
  3. 平台适配实现 创建原生通道处理鸿蒙蓝牙操作:

    // flutter_blue_plus鸿蒙适配
    class HarmonyBleAdapter {
      static const MethodChannel _channel = 
          MethodChannel('flutter_blue_plus/harmony');
      
      static Future<void> initialize() async {
        await _channel.invokeMethod('initialize');
      }
      
      static Future<List<BluetoothDevice>> scanDevices() async {
        final result = await _channel.invokeMethod('scanDevices');
        return _parseDevices(result);
      }
    }
    
  4. 鸿蒙原生实现entry/src/main/java创建蓝牙服务:

    public class BlePlugin implements FlutterPlugin {
      private BluetoothController bluetoothController;
      
      @Override
      public void onAttachedToEngine(FlutterPluginBinding binding) {
        MethodChannel channel = new MethodChannel(
          binding.getBinaryMessenger(),
          "flutter_blue_plus/harmony"
        );
        
        bluetoothController = new BluetoothController();
        channel.setMethodCallHandler(this::handleMethodCall);
      }
      
      private void handleMethodCall(MethodCall call, Result result) {
        switch (call.method) {
          case "initialize":
            bluetoothController.enableBluetooth();
            result.success(null);
            break;
          case "scanDevices":
            List<BluetoothDevice> devices = bluetoothController.scanDevices();
            result.success(devices);
            break;
        }
      }
    }
    
  5. 使用示例

    void main() {
      HarmonyBleAdapter.initialize();
      runApp(MyApp());
    }
    
    class BleScreen extends StatefulWidget {
      @override
      _BleScreenState createState() => _BleScreenState();
    }
    
    class _BleScreenState extends State<BleScreen> {
      List<BluetoothDevice> devices = [];
    
      void scanDevices() async {
        var result = await HarmonyBleAdapter.scanDevices();
        setState(() => devices = result);
      }
    }
    

注意事项

  • 需要处理鸿蒙与Flutter的数据类型转换
  • 注意蓝牙生命周期管理
  • 测试时需要真机设备支持
  • 目前需要自行实现完整的API映射

建议参考OpenHarmony蓝牙开发文档和flutter_blue_plus的API文档进行完整实现。

回到顶部