test001/lib/scenes/BluetoothScene.dart

// /*
//   蓝牙测试场景
// */
// import 'package:flutter/material.dart';
// import 'package:flutter_blue/flutter_blue.dart';

// class BluetoothScene extends StatefulWidget {
//   @override
//   _BluetoothSceneState createState() => _BluetoothSceneState();
// }

// class _BluetoothSceneState extends State<BluetoothScene> {
//   FlutterBlue flutterBlue = FlutterBlue.instance;
//   List<BluetoothDevice> devicesList = [];
//   BluetoothDevice? connectedDevice;
//   BluetoothState? bluetoothState;

//   @override
//   void initState() {
//     super.initState();
//     flutterBlue.state.listen((state) {
//       setState(() {
//         bluetoothState = state;
//       });
//     });

//     flutterBlue.scanResults.listen((results) {
//       setState(() {
//         devicesList = results
//             .where((result) => result.device.name.isNotEmpty)
//             .map((result) => result.device)
//             .toList();
//       });
//     });
//   }

//   void startScan() {
//     flutterBlue.startScan(timeout: Duration(seconds: 4));
//   }

//   void stopScan() {
//     flutterBlue.stopScan();
//   }

//   void connectToDevice(BluetoothDevice device) async {
//     await device.connect();
//     setState(() {
//       connectedDevice = device;
//     });
//     listenToDeviceEvents(device);
//   }

//   void listenToDeviceEvents(BluetoothDevice device) {
//     device.state.listen((state) {
//       if (state == BluetoothDeviceState.connected) {
//         print('Device connected');
//       } else if (state == BluetoothDeviceState.disconnected) {
//         print('Device disconnected');
//       }
//     });

//     device.discoverServices().then((services) {
//       services.forEach((service) {
//         service.characteristics.forEach((characteristic) {
//           characteristic.setNotifyValue(true);
//           characteristic.value.listen((value) {
//             print('Received value: $value');
//           });
//         });
//       });
//     });
//   }

//   @override
//   Widget build(BuildContext context) {
//     return Scaffold(
//       appBar: AppBar(title: Text('Flutter Bluetooth Demo')),
//       body: Column(
//         children: [
//           if (bluetoothState == BluetoothState.off)
//             Text('Bluetooth is off, please turn it on'),
//           if (bluetoothState == BluetoothState.on)
//             Column(
//               children: [
//                 ElevatedButton(
//                   onPressed: startScan,
//                   child: Text('Start Scan'),
//                 ),
//                 ElevatedButton(
//                   onPressed: stopScan,
//                   child: Text('Stop Scan'),
//                 ),
//                 ListView.builder(
//                   shrinkWrap: true,
//                   itemCount: devicesList.length,
//                   itemBuilder: (context, index) {
//                     return ListTile(
//                       title: Text(devicesList[index].name),
//                       subtitle: Text(devicesList[index].id.toString()),
//                       onTap: () {
//                         connectToDevice(devicesList[index]);
//                       },
//                     );
//                   },
//                 ),
//                 if (connectedDevice != null)
//                   Text('Connected to: ${connectedDevice?.name}')
//               ],
//             ),
//         ],
//       ),
//     );
//   }
// }