探索React Native的蓝牙经典连接：react-native-bluetooth-classic

import React, { useEffect, useState } from 'react';
import { StyleSheet, Text, View } from 'react-native';
import RNBluetoothClassic, { EVENT_CONNECTION_LOST } from 'react-native-bluetooth-classic';
 
export default function App() {
  const [status, setStatus] = useState('Disconnected');
 
  useEffect(() => {
    RNBluetoothClassic.init();
    RNBluetoothClassic.on(EVENT_CONNECTION_LOST, () => {
      setStatus('Connection Lost');
    });
 
    // 在组件卸载时清理资源
    return () => {
      RNBluetoothClassic.destroy();
    };
  }, []);
 
  const connectToDevice = async (device) => {
    try {
      const connected = await RNBluetoothClassic.connect(device);
      if (connected) {
        setStatus('Connected');
      } else {
        setStatus('Connection Failed');
      }
    } catch (error) {
      console.error('Connection error:', error);
      setStatus('Connection Failed');
    }
  };
 
  // 假设有一个获取蓝牙设备列表的函数
  const devices = getBluetoothDevices();
 
  return (
    <View style={styles.container}>
      <Text style={styles.status}>{status}</Text>
      {devices.map((device) => (
        <Text key={device.address} onPress={() => connectToDevice(device)}>
          {device.name} ({device.address})
        </Text>
      ))}
    </View>
  );
}
 
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  status: {
    marginBottom: 20,
  },
});

这个代码示例展示了如何在React Native应用中使用react-native-bluetooth-classic库来管理蓝牙经典连接。它首先初始化蓝牙模块，并设置一个事件监听器来处理连接丢失的情况。然后，它提供了一个连接到蓝牙设备的函数，并在用户点击设备名称时尝试建立连接。最后，它列出了可用的蓝牙设备供用户选择。