Bluetooth in react-native

Question

My project requires to receive&send bluetooth signal, and I am pretty new to react-native so which component I can use in react-native for bluetooth related functionalit

Answer 1

I created a cross platform Bluetooth/ WIFI framework that allows you to browse and advertise in a manner similar to Apple's Multipeer Connectivity and Google's Nearby Connections. It works between Android and iOS so you can send messages from an iOS device to an Android device and vice versa. Here's a sample of the library which can be found at https://github.com/alexkendall/RCTUnderdark

import {
  NativeModules,
  NativeAppEventEmitter,
} from 'react-native';
import React from 'react';

var NativeManager = NativeModules.NetworkManager

module.exports = {
  // kind can be one of "WIFI", "BT", and "WIFI-BT"
  browse(kind) {
    NativeManager.browse(kind)
  },
  // kind can be one of "WIFI", "BT", and "WIFI-BT"
  advertise(kind) {
    NativeManager.advertise(kind)
  },
  stopAdvertising() {
    NativeManager.stopAdvertising()
  },
  stopBrowsing() {
    NativeManager.stopBrowsing()
  },
  disconnectFromPeer(peerId) {
    NativeManager.disconnectFromPeer(peerId)
  },
  inviteUser(peerId) {
    NativeManager.inviteUser(peerId)
  },
  sendMessage(message, peerId) {
    NativeManager.sendMessage(message, peerId)
  },
  acceptInvitation(peerId) {
    NativeManager.acceptInvitation(peerId)
  },
  getNearbyPeers(callback) {
    NativeManager.getNearbyPeers((peers) => {
      callback(peers)
    })
  },
  getConnectedPeers(callback) {
    NativeManager.getConnectedPeers((peers) => {
      callback(peers)
    })
  },
  /*listener callbacks
  peer contains .id (string), type(string), connected(bool), message(string), display name(string)
  */
  addPeerDetectedListener(callback) {
    NativeAppEventEmitter.addListener(
    'detectedUser',
    (peer) =>  callback(peer)
    );
  },
  addPeerLostListener(callback) {
    NativeAppEventEmitter.addListener(
    'lostUser',
    (peer) => callback(peer)
    );
  },
  addReceivedMessageListener(callback) {
    NativeAppEventEmitter.addListener(
      'messageReceived',
      (peer) => callback(peer)
    );
  },
  addInviteListener(callback) {
    NativeAppEventEmitter.addListener(
      'receivedInvitation',
      (peer) => callback(peer)
    );
  },
  addConnectedListener(callback) {
    NativeAppEventEmitter.addListener(
      'connectedToUser',
      (peer) => callback(peer)
    );
  },
}