react-native-nearby-api

Getting started

$ yarn add react-native-nearby-api-mrousavy or $ npm i react-native-nearby-api-mrousavy

Installation

This package supports Autolinking for React Native 0.60 and above.

iOS

• cd ios/
  pod install

• Build and run project

Android

There are no additional steps required for Android

Usage

See the example app for more detail and code examples.

• Retrieve your API Keys from the Google Console iOS | Android

• Add the correct permissions to the AndroidManifest.

  <!-- Include if wish to use BLE -->
  <uses-permission android:name="android.permission.BLUETOOTH"/>
  <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
  <!-- Include if wish to use audio -->
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="android.permission.RECORD_AUDIO" />

• Add the Android API Key in the AndroidManifest .

  <meta-data
    android:name="com.google.android.nearby.messages.API_KEY"
    android:value="MY_API_KEY" />

• The iOS API key will be supplied through the connect() method.

• Add NSBluetoothPeripheralUsageDescription to the Info.plist

• Add NSMicrophoneUsageDescription to the iOS project's Info.plist if using audio

Important: Ask for Bluetooth permissions first using react-native-permissions!

import NearbyApi from 'react-native-nearby-api';

const nearbyAPI = new NearbyAPI(true); // Use BLE only, no audio.
nearbyAPI.onConnected(message => {
  console.log(message);
});
nearbyAPI.onDisconnected(message => {
  console.log(message);
});
nearbyAPI.onFound(message => {
  console.log('Message Found!');
  console.log(message);
});
nearbyAPI.onLost(message => {
  console.log('Message Lost!');
  console.log(message);
});
// Android Only
nearbyAPI.onDistanceChanged((message, value) => {
  console.log('Distance Changed!');
  console.log(message, value);
});
// Android Only
nearbyAPI.onBLESignalChanged((message, value) => {
  console.log('BLE Signal Changed!');
  console.log(message, value);
});
nearbyAPI.onPublishSuccess(message => {
  console.log(message);
});
nearbyAPI.onPublishFailed(message => {
  console.log(message);
});
nearbyAPI.onSubscribeSuccess(() => {});
nearbyAPI.onSubscribeFailed(() => {});

// To connect from Google API Client
nearbyAPI.connect(API_KEY);

// To check if the nearby API is connected.
nearbyAPI.isConnected((connected, error) => {
  console.log(connected);
});

// To disconnect later
nearbyAPI.disconnect();

// To publish to nearby devices
nearbyAPI.publish('Hello World!');

// To check if the nearby API is publishing.
nearbyAPI.isPublishing((publishing, error) => {
  console.log(publishing);
});

// To subscribe to nearby devices broadcasting
nearbyAPI.subscribe();

// To check if the nearby API is subscribing.
nearbyAPI.isSubscribing((subscribing, error) => {
  console.log(subscribing);
});

// To unpublish
nearbyAPI.unpublish();

// To unsubscribe
nearbyAPI.unsubscribe();

Running the Example

• Install the dependencies in the root folder

  yarn

Generate an API Key from the Google Developer Console

1. Go to the Google Developers Console.
2. Create or select a project to register your application with.
3. Click Continue to Enable the API.
4. On the Credentials page, create a new API Key. (No key restrictions are needed for this example)
5. Copy/Paste your key in example/index.js and in the example AndroidManifest.xml

Android

• To run the example app, the packager must have the projectRoots reordered for the example/ directory. In another terminal window:

yarn start --projectRoots <FULL-PATH-TO-REPO>/react-native-nearby-api/example,<FULL-PATH-TO-REPO>/react-native-nearby-api

yarn run:android

adb reverse tcp:8081 tcp:8081

iOS

• cd example ios/
• bundle exec pod install
• Open example.xcworkspace
• Add your IP to AppDelegate.m

  jsCodeLocation = [NSURL URLWithString:@"http://<IP-ADDRESS>:8081/index.bundle?platform=ios&dev=true"];

• In another terminal window: yarn start

• Run on device

  NOTE: If you receive a duplicate symbols for architecture error through Xcode, this is a known issue. A work around is to run ./renameLogger.sh after node_modules have been installed and you've attempted to run in Xcode.