dimitris4-react-native-health/docs/saveWeight.md

A React Native package to interact with Apple HealthKit

# saveWeight

save a numeric weight value to Healthkit

`saveWeight` accepts an options object containing a numeric weight value:

Example input options:

```javascript
let options = {
  value: 200,
  unit: AppleHealthKit.Constants.Units.gram,  // optional; default pounds
  startDate: new Date(2021, 0, 0).toISOString() // optional; default now
}
```

Call the method:

```javascript
AppleHealthKit.saveWeight(
  (options: HealthInputOptions),
  (err: Object, results: number) => {
    if (err) {
      console.log('error saving weight to Healthkit: ', err)
      return
    }
    // weight successfully saved
  },
)
```

Example output:

```json
200
```