javascript - 使用 react-native-ble-manager 获取可用蓝牙设备的列表

Question

如何使用 react-native-ble-manager 获取可用蓝牙设备的列表？ ？

Answer 1

我最近不得不使用这个库，这对我有用:

import { NativeModules, NativeEventEmitter } from 'react-native';
import BleManager from 'react-native-ble-manager';

const BleManagerModule = NativeModules.BleManager;
const bleManagerEmitter = new NativeEventEmitter(BleManagerModule);

...

state = {
  peripherals: new Map(),
};

componentDidMount() {
  BleManager.start({ showAlert: false })

  this.handlerDiscover = bleManagerEmitter.addListener(
    'BleManagerDiscoverPeripheral',
    this.handleDiscoverPeripheral
  );

  this.handlerStop = bleManagerEmitter.addListener(
    'BleManagerStopScan',
    this.handleStopScan
  );

  this.scanForDevices(); // I chose to start scanning for devices here
}

scanForDevices() {
  BleManager.scan([], 15);
}

handleDiscoverPeripheral = (peripheral) => {
  const { peripherals } = this.state;

  if (peripheral.name) {
    peripherals.set(peripheral.id, peripheral.name);
  }
  this.setState({ peripherals });
};

handleStopScan = () => {
  console.log('Scan is stopped. Devices: ', this.state.peripherals);
}

编辑:不要忘记请求位置许可!