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https://github.com/Driversnote-Dev/react-native-kontaktio

React Native (iOS and Android) library for Kontakt.io beacons (and all other beacons)
https://github.com/Driversnote-Dev/react-native-kontaktio

beacon ibeacon kontaktio

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React Native (iOS and Android) library for Kontakt.io beacons (and all other beacons)

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README 

        
# react-native-kontaktio [![npm version](https://badge.fury.io/js/react-native-kontaktio.svg)](https://badge.fury.io/js/react-native-kontaktio)



Cross-platform React Native module for detecting beacons with **Android** and **iOS** devices.



Kontakt.io SDK Versions of newest release:



| OS          | SDK Version                                                                                          |

| :---------- | :--------------------------------------------------------------------------------------------------- |

| **Android** | [7.0.6](https://kontakt-api-docs.stoplight.io/docs/dev-ctr-sdks/423dcaf4067cc-android-sdk-changelog) |

| **iOS**     | [3.0.25](https://github.com/kontaktio/kontakt-ios-sdk/releases/tag/v3.0.25)                          |



## Advantages



- Works with any beacon (because the Kontakt.io SDK wraps the native beacon libraries (while adding more) - no Kontakt.io SDK API key is necessary.

- Especially useful with [Kontakt.io](http://kontakt.io/) beacons because additional information like the **unique id** (on the back of each beacon), the **battery power level** and others are available and get synchronized with your Kontakt.io online panel.

- Highly customizable configurations (e.g. for setting arbitrary monitoring intervals on Android)



## Setup



- [Android Setup](/docs/setup.android.md)

- [iOS Setup](/docs/setup.ios.md)



## API Documentation



- [Android Documentation](/docs/api.android.md)

- [iOS Documentation](/docs/api.ios.md)



## Examples



### Extensive Example



- [Android extensive Example](/Example/src/Example.android.js)

- [iOS extensive Example](/Example/src/Example.ios.js)



### Minimal TypeScript Example



A minimal example (created with [React Native v0.69.5](https://github.com/facebook/react-native/releases/tag/v0.69.5) and TypeScript) with the default configuration and no specifically set regions. Thus, the default region `everywhere` (i.e. all beacons) is automatically used.



1. Follow the setup instructions carefully for `iOS` and `Android` to install `react-native-kontaktio` for both platforms.

2. Start a new React Native TypeScript project (`npx react-native init BeaconTest --template react-native-template-typescript`) and replace `App.tsx` with the example code below.

3. Run the app on a real device (`iOS` or `Android` - not a simulator)

4. Check the React Native logs to see console statements containing incoming beacon signals.



```ts

import React, { useEffect } from 'react';

import {

  Alert,

  DeviceEventEmitter,

  NativeEventEmitter,

  PermissionsAndroid,

  Platform,

  SafeAreaView,

  StatusBar,

  StyleSheet,

  Text,

  View,

} from 'react-native';



import Kontakt, { KontaktModule } from 'react-native-kontaktio';

const {

  connect,

  init,

  startDiscovery,

  startRangingBeaconsInRegion,

  startScanning,

} = Kontakt;



const kontaktEmitter = new NativeEventEmitter(KontaktModule);



const isAndroid = Platform.OS === 'android';



/**

 * Android Marshmallow (6.0) and above need to ask the user to grant certain permissions.

 * This function does just that.

 */

const requestLocationPermission = async () => {

  try {

    const granted = await PermissionsAndroid.request(

      PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,

      {

        title: 'Location Permission',

        message:

          'This example app needs to access your location in order to use bluetooth beacons.',

        buttonNeutral: 'Ask Me Later',

        buttonNegative: 'Cancel',

        buttonPositive: 'OK',

      }

    );

    if (granted === PermissionsAndroid.RESULTS.GRANTED) {

      return true;

    } else {

      // permission denied

      return false;

    }

  } catch (err) {

    console.warn(err);

    return false;

  }

};



const beaconSetup = async () => {

  if (isAndroid) {

    // Android

    const granted = await requestLocationPermission();

    if (granted) {

      await connect();

      await startScanning();

    } else {

      Alert.alert(

        'Permission error',

        'Location permission not granted. Cannot scan for beacons',

        [{ text: 'OK', onPress: () => console.log('OK Pressed') }],

        { cancelable: false }

      );

    }

  } else {

    // iOS

    await init();



    /**

     * Will discover Kontakt.io beacons only

     */

    await startDiscovery();



    /**

     * Works with any beacon(also virtual beacon, e.g. https://github.com/timd/MactsAsBeacon)

     * Requires user to allow GPS Location (at least while in use)

     *

     * change to match your beacon values

     */

    await startRangingBeaconsInRegion({

      identifier: '',

      uuid: 'A4826DE4-1EA9-4E47-8321-CB7A61E4667E',

      major: 1,

      minor: 34,

    });

  }



  // Add beacon listener

  if (isAndroid) {

    /* works with any beacon */

    DeviceEventEmitter.addListener(

      'beaconsDidUpdate',

      ({ beacons, region }) => {

        console.log('beaconsDidUpdate', { beacons, region });

      },

    );

  } else {

    /* works with Kontakt.io beacons only */

    kontaktEmitter.addListener('didDiscoverDevices', ({ beacons }) => {

      console.log('didDiscoverDevices', { beacons });

    });



    /* works with any beacon */

    kontaktEmitter.addListener('didRangeBeacons', ({ beacons, region }) => {

      console.log('didRangeBeacons', { beacons, region });

    });

  }

};



const App: React.FC = () => {

  useEffect(() => {

    Promise.resolve().then(beaconSetup);



    return () => {

      // remove event listeners

      if (isAndroid) {

        kontaktEmitter.removeAllListeners('beaconsDidUpdate');

      } else {

        kontaktEmitter.removeAllListeners('didDiscoverDevices');

        kontaktEmitter.removeAllListeners('didRangeBeacons');

      }

    };

  }, []);



  return (

    

      

      

        react-native-kontaktio Example

        Check console.log statements

      

    

  );

};



const styles = StyleSheet.create({

  wrapper: {

    height: '100%',

    justifyContent: 'center',

    alignItems: 'center',

  },

  title: {

    paddingVertical: 10,

    fontSize: 30,

  },

});



export default App;

```



---



**Note (March 2020)**: The example in the `Example/` folder is a bit outdated. If you want to try to run the example app anyway, here are some instructions to do so:



1.  Clone this repository, connect an Android and/or Apple device to your computer and have some (Kontakt.io) beacons nearby.



2.  Open a terminal window, bash to the `Example/` folder, run `npm install` and start the react-native server



    ```bash

    $ cd react-native-kontaktio/Example

    $ npm install

    $ npm start

    ```



3.  Build the example and run it on your device. The app will appear under the name `KontaktIoSimpleTest`:



    - Android:



      ```bash

      $ react-native run-android

      ```



    - iOS



      ```bash

      $ react-native run-ios

      ```



## Further notes



- Beacons support is part of Android versions 4.3 and up. \* So far the lowest Android version this library was tested on was a device with Android 4.4.2.

- A physical device must be used for testing and some beacons (Kontakt.io beacons to be able to use all features).

- If some BLE Beacons are filtered out by the scan on Android 12+, therefore not returned in the list of beacons, try this:

  ```xml

  

  ```

  With the **neverForLocation** android:usesPermissionFlags, some BLE beacons are filtered from the scan results. |More information about this on [issue #121](https://github.com/Driversnote-Dev/react-native-kontaktio/issues/121#issuecomment-2098884380).



## ToDo:



- Update Android Eddystone feature:



  - Add _multiple_ Eddystone namespaces, i.e. add function `setEddystoneNamespaces`

  - Add Eddystone Frames Selection configuration option



## Contribute



### Test library changes locally



1. Fork and clone this repository

2. Run `yarn` to install the dependencies

3. Make code changes

4. Delete `lib` folder if it exists and run `yarn tsc` to compile the TypeScript files in the the `lib` folder.

5. In the `package.json` file of an example app point to the this directory, e.g.



    ```json

    "dependencies": {

      ...

      "react-native-kontaktio": "../react-native-kontaktio"

    },

    ```

6. Build and run on a real device



### Upgrade to a new version of the Kontakt.io SDK



#### Android



In `build.gradle` file change the version in the following line



```

implementation "io.kontakt.mvn:sdk:7.0.6"

```



#### iOS



1. Go to the [Kontakt.io SDK releases page](https://github.com/kontaktio/kontakt-ios-sdk/releases) and download the newest version of  **KontaktSDK.framework.zip**.

2. Replace the `ios/KontaktSDK.framework` folder of this library with the `Cocoapods/KontaktSDK/iOS/KontaktSDK.xcframework/ios-arm64_armv7/KontaktSDK.framework` folder which you find in the unzipped folder structure.