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react-native-boundary

A simple, native, and efficient geofencing/region monitoring react native library for both iOS and android.

Usage

import Boundary, {Events} from 'react-native-boundary';

class MyComponent extends Class {
  componentWillMount() {
    Boundary.add({
      lat: 34.017714,
      lng: -118.499033,
      radius: 50, // in meters
      id: "Chipotle",
    })
      .then(() => console.log("success!"))
      .catch(e => console.error("error :(", e));
   
    Boundary.on(Events.ENTER, id => {
      // Prints 'Get out of my Chipotle!!'
      console.log(`Get out of my ${id}!!`);
    });
    
    Boundary.on(Events.EXIT, id => {
      // Prints 'Ya! You better get out of my Chipotle!!'
      console.log(`Ya! You better get out of my ${id}!!`)
    })
  }
  
  componentWillUnmount() {
    // Remove the events
    Boundary.off(Events.ENTER)
    Boundary.off(Events.EXIT)

    // Remove the boundary from native API´s
    Boundary.remove('Chipotle')
      .then(() => console.log('Goodbye Chipotle :('))
      .catch(e => console.log('Failed to delete Chipotle :)', e))
  }
}

Getting started

$ npm install react-native-boundary --save

Automatic Installation

$ react-native link react-native-boundary

Manual installation

iOS

  1. In XCode, in the project navigator, right click LibrariesAdd Files to [your project's name]
  2. Go to node_modulesreact-native-boundary and add RNBoundary.xcodeproj
  3. In XCode, in the project navigator, select your project. Add libRNBoundary.a to your project's Build PhasesLink Binary With Libraries
  4. Run your project (Cmd+R)<

Android

  1. Open up android/app/src/main/java/[...]/MainActivity.java
  • Add import com.eddieowens.RNBoundaryPackage; to the imports at the top of the file
  • Add new RNBoundaryPackage() to the list returned by the getPackages() method
  1. Append the following lines to android/settings.gradle:
    include ':react-native-boundary'
    project(':react-native-boundary').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-boundary/android')
    
  2. Insert the following lines inside the dependencies block in android/app/build.gradle:
      compile project(':react-native-boundary')
    

Post Install

Android

Add the ACCESS_FINE_LOCATION permission to your AndroidManifest.xml like so,

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.mypackage">
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    ...
</manifest>

iOS

Before iOS 11: Add the following to your Info.plist:

  • NSLocationAlwaysUsageDescription

For iOS 11: Add the following to your Info.plist:

  • NSLocationWhenInUseUsageDescription
  • NSLocationAlwaysAndWhenInUseUsageDescription

API

Functions

Name Arguments Note
on event: event, callback: function Triggers the callback when the event occurs. The callback will be passed an array of boundary ids as strings. Can be called in the background
off event: event Removes bound event listeners
add boundary: boundary Adds a Boundary that can be triggered when an event occurs
remove id: string Removes a Boundary from being triggered. Boundaries will remain until remove or removeAll is called or the app is uninstalled
removeAll void Removes all boundaries and event callbacks.

Types

Boundary

Field Type Note
id string ID for your boundary. Value that is returned when an event is triggered
lat number Must be a valid latitude
lng number Must be a valid longitude
radius number In meters. It is highly suggested that the radius is greater than 50 meters

Events

Field Type Note
ENTER string Event for when a user enters a boundary
EXIT string Event for when a user exits a boundary

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Native implementation of geofencing/region monitoring

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