iOS Auto-linking Installation

With yarn

yarn add react-native-background-geolocation

With npm

npm install react-native-background-geolocation --save

pod install

$ cd ios
$ pod install

Permissions & Background Modes

Open the Xcode project ios/Runner/Runner.xcworkspace

• Enable the background modes:
  • Location updates
  • Background fetch
  • Audio ( ℹ️ optional for debug-mode sound FX )

Configure Usage Strings in Info.plist

Edit Info.plist. Add the following items (Set Value as desired):

Key	Type	Value
Privacy - Location Always and When in Use Usage Description	String	CHANGEME: Location required in background
Privacy - Location When in Use Usage Description	String	CHANGEME: Location required when app is in use
Privacy - Motion Usage Description	String	CHANGEME: Motion permission helps detect when device in in-motion

Configure Your License

In your Info.plist, add the following key:

Key	Type	Value
TSLocationManagerLicense	String	<PASTE YOUR LICENSE KEY HERE>

Background Fetch

The Background Geolocation SDK has internal handling for periodic Background Fetch events (if enabled). It can use these periodic events to gather current state information (is the device moving?), evaluating the schedule (if you've configured one) or checking if there are any location records in the queue, waiting to be uploaded to your configured url:

1. Open your Info.plist and add the key "Permitted background task scheduler identifiers"

Key	Type	Value
Permitted background task scheduler identifiers	Array
Item 0	String	com.transistorsoft.fetch

2. Add the required identifier com.transistorsoft.fetch.

3. Configure in your AppDelegate (find AppDelegate.swift OR AppDelegate.m):

AppDelegate.swift

import UIKit
import React
import React_RCTAppDelegate
import ReactAppDependencyProvider
+import TSBackgroundFetch

@main
class AppDelegate: UIResponder, UIApplicationDelegate {
  
  func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
  ) -> Bool {
    .
    .
    .    
+   // [REQUIRED] Transistorsoft
+   TSBackgroundFetch.sharedInstance()?.didFinishLaunching()
    .
    .
    .    
    return true
  }
}

AppDelegate.m (for older apps using Obj-c)

#import "AppDelegate.h"

#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>

+#import <TSBackgroundFetch/TSBackgroundFetch.h>

@implementation AppDelegate

(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  .
  .
  .
+ // [REQUIRED] Transistorsoft
+ [[TSBackgroundFetch sharedInstance] didFinishLaunching];

  return YES;
}

Transistor Software manages a helpful free plugin you can optionally add to your app named react-native-background-fetch.

// Execute a task about every 15 minutes:
BackgroundFetch.configure({
  minimumFetchInterval: 15
}, async (taskId) => { // <-- This is your periodic-task callback
  const location = await BackgroundGeolocation.getCurrentPosition({
    samples: 3,
    extras: {   // <-- your own arbitrary meta-data
      "event": "getCurrentPosition"
    }
  });
  console.log('[getCurrentPosition]', location);
  BackgroundFetch.finish(taskId);   // <-- signal that your task is complete
});