Warning: TypeError: _reactNativeHealth.default.initHealthKit is not a function (it is undefined)

[dws-krisha]

import React, { useEffect, useState } from "react";
import { View, Text, Button, Alert } from "react-native";
import AppleHealthKit, { HealthKitPermissions } from "react-native-health";

const App = () => {
const [isHealthKitAvailable, setIsHealthKitAvailable] = useState(false);
const [hasPermissions, setHasPermission] = useState(false);
const [steps, setSteps] = useState<number | null>(null);

const permissions: HealthKitPermissions = {
permissions: {
read: [AppleHealthKit.Constants.Permissions.Steps],
write: [],
},
};

const fetchSteps = () => {
const options = {
startDate: new Date(2024, 0, 1).toISOString(), // Example: fetch data from Jan 1, 2024
endDate: new Date().toISOString(),
};

AppleHealthKit.getStepCount(options, (err, results) => {
  if (err) {
    console.error("Error fetching step count:", err);
    return;
  }
  setSteps(results.value);
});

};

useEffect(() => {
// Check if HealthKit is available
AppleHealthKit?.isAvailable((err, available) => {
if (err || !available) {
Alert.alert(
"HealthKit Not Available",
"This device does not support Apple HealthKit."
);
return;
}
setIsHealthKitAvailable(true);

  // Initialize HealthKit
  AppleHealthKit?.initHealthKit(permissions, (err) => {
    if (err) {
      console.log("Error getting permissions");
      return;
    }
    setHasPermission(true);
    fetchSteps();
  });
});

}, []);

return (
<View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>

{isHealthKitAvailable
? Steps Count: ${steps ?? "Loading..."}
: "HealthKit not available"}

{isHealthKitAvailable && (

)}

);
};

export default App;

I dont know what am i missing here my library is installed properly ,pods are installed correctly but getting such error.
same error also there for isAvailable call.
Can anyone suggest or help me out to solve this issue?

[fontesrp]

This started happening in our project when we upgraded to React Native 0.76. The library works well with React Native 0.75.4.

This issue has already been reported here, and this PR has a fix

[kapilw360]

This started happening in our project when we upgraded to React Native 0.76. The library works well with React Native 0.75.4.

This issue has already been reported here, and this PR has a fix

Same problem im facing. im using native 0.76.3. version. so you solved this issue ? or the problem is with react-native-health dependency only. please let me know .

[florisjkruger4]

@kapilw360 - I was able to fix it my looking at the file changes PR:
Link

You will need to make your index.js file in:
node_modules > react0native-health > index.js

look like the index.js in here.
Hope this helps, good luck!

[kapilw360]

@kapilw360 - I was able to fix it my looking at the file changes PR: Link

You will need to make your index.js file in: node_modules > react0native-health > index.js

look like the index.js in here. Hope this helps, good luck!

yah..i done. Thanxx man.

[warrenday]

@kapilw360 is correct. The issue is the Object.assign in the latest package index.js. You cannot object.assign native modules. This is a temporary fix with complete type support, to get the API back to the expected shape.

import BrokenHealthKit, { HealthKitPermissions } from "react-native-health";

const NativeModules = require("react-native").NativeModules;
const AppleHealthKit = NativeModules.AppleHealthKit as typeof BrokenHealthKit;
AppleHealthKit.Constants = BrokenHealthKit.Constants;

Then you can use as normal. For example:

const permissions: HealthKitPermissions = {
  permissions: {
    read: [
      AppleHealthKit.Constants.Permissions.HeartRate,
    ],
    write: [],
  },
};

AppleHealthKit.initHealthKit(permissions, (error) => {
  if (error) {
    console.log("[ERROR] Cannot grant permissions!", error);
    return;
  }

  AppleHealthKit.getSleepSamples(
    {
      startDate: new Date(2020, 1, 1).toISOString(),
    },
    (error, results) => {
      if (error) {
        console.log("[ERROR] Cannot get sleep samples!", error);
        return;
      }

      console.log("[SUCCESS] Sleep samples fetched!", results);
    }
  );
});

[jacques-cadet]

@warrenday: Thank you. This was EXTREMELY frustrating.

[MarzyCoder]

Same problem here. Followed the fix in the PR and works. Please merge fast!!

[zewt]

A workaround that doesn't require modifying the package is to assign the missing functions that you need. For example:

import { NativeModules } from 'react-native';
import AppleHealthKit from 'react-native-health';

for(let key of ["initHealthKit"])
    AppleHealthKit[key] = NativeModules.AppleHealthKit[key];

I don't know if this works for all of the interface since I only use a tiny part of it, but it got me up and running again.

Since this package appears to be abandoned (no response to a showstopper bug since Nov), I poked around for alternatives. I see https://github.com/kingstinct/react-native-healthkit, which at least has commits in the last month. I haven't tried it yet, but I thought I'd mention it for anyone who wants to take a look.

[MarzyCoder]

A workaround that doesn't require modifying the package is to assign the missing functions that you need. For example:

import { NativeModules } from 'react-native';
import AppleHealthKit from 'react-native-health';

for(let key of ["initHealthKit"])
AppleHealthKit[key] = NativeModules.AppleHealthKit[key];
I don't know if this works for all of the interface since I only use a tiny part of it, but it got me up and running again.

Since this package appears to be abandoned (no response to a showstopper bug since Nov), I poked around for alternatives. I see https://github.com/kingstinct/react-native-healthkit, which at least has commits in the last month. I haven't tried it yet, but I thought I'd mention it for anyone who wants to take a look.

Thank you for this fix! I tried the other package and it seems like working very good!

[nikitabiichuk2009]

Guys when I log Native modules
const NativeModules = require("react-native").NativeModules;
the result is null for me, what is wrong? I am using expo-dev-client build for ios

[jacques-cadet]

How are you running the build? is it npx expo -c or npm run ios?
build it locally, npx expo prebuild --clean then npm run ios
Please share console output.

[nikitabiichuk2009]

@jacques-cadet, thanks for the help! But I have already switched to https://github.com/kingstinct/react-native-healthkit?tab=readme-ov-file, works fine.

[jacques-cadet]

@nikitabiichuk2009, will soon do the same