flutter蓝牙连接
时间: 2023-09-06 20:10:05 浏览: 216
flutter_bluetooth_classic:Flutter插件蓝牙连接
Flutter提供了`flutter_blue`插件用于实现蓝牙连接。下面是连接蓝牙的一般流程:
1. 导入`flutter_blue`插件
```dart
import 'package:flutter_blue/flutter_blue.dart';
```
2. 初始化蓝牙对象
```dart
FlutterBlue flutterBlue = FlutterBlue.instance;
```
3. 扫描可连接的蓝牙设备
```dart
flutterBlue.startScan(timeout: Duration(seconds: 4));
```
4. 连接蓝牙设备
```dart
await device.connect();
```
5. 发现服务
```dart
List<BluetoothService> services = await device.discoverServices();
```
6. 获取特征值
```dart
BluetoothCharacteristic characteristic = services[index].characteristics[0];
```
7. 读取特征值
```dart
List<int> value = await characteristic.read();
```
8. 写入特征值
```dart
await characteristic.write([0x01, 0x02]);
```
9. 监听特征值变化
```dart
await characteristic.setNotifyValue(true);
characteristic.value.listen((value) {
// 处理特征值变化
});
```
以上是连接蓝牙设备的一般流程,具体实现还需要根据具体的需求进行调整。
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