react-native-health-link

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react-native-health-link

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# react-native-health-link

> [!WARNING]
> This module is currently in **alpha**. While it provides core functionality, it is still under active development and may contain bugs.

A simple way to work with HealthKit on iOS and Health Connect on Android in React Native. Access health data like steps, sleep, and more with one interface that unifies react-native-health and react-native-health-connect.

## Installation

To install and setup this package, please refer to the [installation guide](./docs/installation.md).

## Supported Health Data Types

This library supports reading and writing the following health data types:

### Read & Write Support

- **Blood glucose** - Blood glucose levels with support for mg/dL and mmol/L units
- **Weight** - Body weight with support for kg, grams, and pounds
- **Height** - Body height with support for cm, meters, feet, and inches
- **Heart rate** - Heart rate measurements in beats per minute
- **Steps** - Daily step count

### Read Only Support

- **Resting heart rate** - Resting heart rate measurements
- **Blood pressure** - Systolic and diastolic blood pressure readings
- **Oxygen saturation** - Blood oxygen saturation percentage
- **Active Energy Burned** - The amount of energy expended during a specific activity.
- **Basal Energy Burned** - The amount of energy expended at rest.

## Usage

```jsx
import { useState } from 'react';
import { Text } from 'react-native';
import {
  initializeHealth,
  HealthLinkDataType,
  HealthLinkPermissions,
  read,
  write,
  BloodGlucoseUnit,
  WeightUnit,
  HeighUnit
} from 'react-native-health-link';

initializeHealth({
  read: [HealthLinkPermissions.BloodGlucose],
  write: [HealthLinkPermissions.BloodGlucose],
});

export default function App() {
 const [bloodGlucose, setBloodGlucose] = useState<number | undefined>();
 const [weight, setWeight] = useState<number | undefined>();

// Reading health data
  read(HealthLinkDataType.BloodGlucose, {
    unit: BloodGlucoseUnit.MmolPerL,
    startDate: new Date('2025-01-01').toISOString(),
  }).then((data) => {
    setBloodGlucose(data[0]?.value);
  });

read(HealthLinkDataType.Weight, {
    unit: WeightUnit.Kg,
    startDate: new Date('2025-01-01').toISOString(),
  }).then((data) => {
    setWeight(data[0]?.value);
  });

//Writing health data
  write(HealthLinkDataType.BloodGlucose, {
    value: 4.5,
    unit: BloodGlucoseUnit.MmolPerL,
  });

write(HealthLinkDataType.Height, {
    value: 175,
    unit: HeighUnit.Cm,
  });

return (
 <>
 <Text>Your blood glucose is {bloodGlucose} mmol/L</Text>
 <Text>Your weight is {weight} kg</Text>
 </>
 );
}
```

### Documentation

#### SDK functions:

[initializeHealth](./docs/initializeHealth.md)

[isAvailable](./docs/isAvailable.md)

#### Data functions:

[read](./docs/read.md)

[write](./docs/write.md)

## Contributing

See the [contributing guide](CONTRIBUTING.md) to learn how to contribute to the repository and the development workflow.

## License

MIT

## Acknowledgements

This library provides a common interface to simplify cross-platform use of health tools; most of the credit goes to [react-native-health](https://github.com/agencyenterprise/react-native-health?tab=readme-ov-file) and [react-native-health-connect](https://github.com/matinzd/react-native-health-connect).

Made with [create-react-native-library](https://github.com/callstack/react-native-builder-bob)

---

Created with ❤️ by <a href="https://xmartlabs.com/">Xmartlabs</a>

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