react-native-fitness

react-native-fitness is a library that works on both iOS and Android with it you can interact with Apple Healthkit and Google Fit. Currently the lib provides a set of API that you can use to read steps count or distance count for a given period of time.

Note: We're open to receive PRs that contains new features or improvements, so feel free to contribute to this repo.

Getting started

npm install @ovalmoney/react-native-fitness --save

yarn add @ovalmoney/react-native-fitness

Mostly automatic installation

react-native link @ovalmoney/react-native-fitness

Manual installation

iOS

Pods

Add the line below to your Podfile.

pod 'react-native-fitness', :path => '../node_modules/@ovalmoney/react-native-fitness'`

Run pod install in your iOS project directory.
In XCode, select your project, go to Build Phases ➜ Link Binary With Libraries and add libreact-native-fitness.a.

Add following to your Info.plist in order to ask permissions.

<key>NSHealthShareUsageDescription</key>
<string>Read and understand health data.</string>

Manually

In XCode's project navigator, right click Libraries ➜ Add Files to [your project's name]
Go to node_modules ➜ @ovalmoney ➜ react-native-fitness and select RNFitness.xcodeproj
In XCode select your project, go to Build Phases ➜ Link Binary With Libraries and add libRNFitness.a.
Run your project (Cmd+R)

In order to make it run, it is necessary to turn on Health Kit in the Capabilities.

Android

Get an OAuth 2.0 Client ID as explained at https://developers.google.com/fit/android/get-api-key
Open up MainApplication.java
- Add import com.ovalmoney.fitness.RNFitnessPackage; to the imports at the top of the file
- Add new RNFitnessPackage() to the list returned by the getPackages() method

Append the following lines to android/settings.gradle:

include ':@ovalmoney_react-native-fitness'
project(':@ovalmoney_react-native-fitness').projectDir = new File(rootProject.projectDir,   '../node_modules/@ovalmoney/react-native-fitness/android')

Insert the following lines inside the dependencies block in android/app/build.gradle:
```
compile project(':@ovalmoney_react-native-fitness')
```

Usage

import Fitness from '@ovalmoney/react-native-fitness';

const permissions = [
  { kind: Fitness.PermissionKind.Step, access: Fitness.PermissionAccess.Write },
];

Fitness.isAuthorized(permissions)
  .then((authorized) => {
    // Do something
  })
  .catch((error) => {
    // Do something
  });

API

Fitness.isAuthorized([{ kind: int, access: int }]) Check if permissions are granted or not. It works on Android and iOS >= 12.0, while it returns an error when iOS < 12. It requires an Array of Object with a mandatory key kind and an optional key access. Possible values for the keys can be found in PermissionKind and PermissionAccess under Attributes section. On iOS at least one permissions with Read access must be provided, otherwise an errorEmptyPermissions will be thrown.
Fitness.requestPermissions([{ kind: int, access: int }]) Ask permission and return if user granted or not(Android), while, due to Apple's privacy model, always true is returned in iOS. It requires an Array of Object with a mandatory key kind and an optional key access. Possible values for the keys can be found in PermissionKind and PermissionAccess under Attributes section. On iOS at least one permissions with Read access must be provided, otherwise an errorEmptyPermissions will be thrown.
Fitness.getSteps({ startDate: string, endDate: string, interval: string }) Fetch steps on a given period of time. It requires an Object with startDate and endDate attributes as string. If startDate is not provided an error will be thrown. Set interval to decide how detailed the returned data is, set it to hour or minute otherwise it defaults to days.
Fitness.getDistance({ startDate: string, endDate: string, interval: string }) Fetch distance in meters on a given period of time. It requires an Object with startDate and endDate attributes as string. If startDate is not provided an error will be thrown. Set interval to decide how detailed the returned data is, set it to hour or minute otherwise it defaults to days.
Fitness.getCalories({ startDate: string, endDate: string, interval: string }) Fetch calories burnt in kilocalories on a given period of time. It requires an Object with startDate and endDate attributes as string. If startDate is not provided an error will be thrown. Set interval to decide how detailed the returned data is, set it to hour or minute otherwise it defaults to days.
Fitness.getHeartRate({ startDate: string, endDate: string, interval: string }) Fetch heart rate bpm on a given period of time. It requires an Object with startDate and endDate attributes as string. If startDate is not provided an error will be thrown. Set interval to decide how detailed the returned data is, set it to hour or minute otherwise it defaults to days.
Fitness.subscribeToActivity() Available only on android. Subscribe to all Google Fit activities. It returns a promise with true for a successful subscription and false otherwise. Call this function to get all google fit activites and eliminate the need to have Google Fit installed on the device.
Fitness.subscribeToSteps() Available only on android. Subscribe only to steps from the Google Fit store. It returns a promise with true for a successful subscription and false otherwise. Call this function to get steps and eliminate the need to have Google Fit installed on the device.

Attributes

Platform

Return the used provider.

PermissionKind

Return the information of what kind of Permission can be asked. At the moment the list of possible kinds is:

Step: to required the access for Step
Distance: to required the access for Distances
Calories: to required the access for Calories
HeartRate: to required the access for Heart rate
Activity: to required the access for Activity (only Android)

PermissionAccess

Return the information of what kind of Access can be asked. The list of possible kinds is:

Read: to required the access to Read
Write: to required the access to Write

Error (iOS only)

Return the list of meaningful errors that can be possible thrown. On Android it is an empty object. Possible values are:

hkNotAvailable: thrown if HealthKit is not available
methodNotAvailable: thrown if isAuthorized is called on iOS < 12.0
dateNotCorrect: thrown if received date is not correct
errorEmptyPermissions: thrown if no read permissions are provided
errorNoEvents: thrown if an error occurs while try to retrieve data