React Native Guide

Learn about OkHi's integration for verifying addresses.

1. Set up OkHi (Client-side)

The React Native Library internally uses the native iOS and android libraries. To install the OkHi React Native library, run one of the following commands in your project's directory (depending on which package manager you use):

yarn

yarn add react-native-okhi react-native-webview

npm

npm install react-native-okhi react-native-webview

Next, configure your android and iOS apps as follows:

Android

​Add the following permissions to your AndroidManifest.xml located under android/app/src/main/AndroidManifest.xml

<manifest ...>
​    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
    ...
    
    <application>
    ...
    </application>
​
</manifest>

All OkHi react-native libraries target Android devices >= SDK 21. Make sure you're targeting at least the same by modifying your android/build.gradle file

ext {
  minSdkVersion = 21
  ..//
}

In your android/build.gradle add the OkHi Maven repo to the list of repositories i.e

allprojects {
    repositories {
        maven { url "https://repo.okhi.io/artifactory/maven" } // <- add this
        ..//
    }
}

iOS

You would require the latest versions of Xcode & Swift.

Enable Background modes in your application.

OkHi obtains verification signals in the background, to enable this make sure to add "Location updates" and "Background fetch" to your Background Modes under Signing & Capabilities of your target.

All OkHi react-native libraries target ios devices >= 12. Make sure you're targeting at-least the same by modifying your both your Podfile and deployment target.

Podfile located under: ios/Podfile

platform :ios, '12.0'

Add necessary permissions to your info.plist file located under /ios/MyApp

<key>NSLocationWhenInUseUsageDescription</key>
<string>String that explains why you need this permission</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>String that explains why you need this permission</string>
<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>String that explains why you need this permission</string>

Finally install all required pods by running the following command in the ios directory

pod install

Set up OkVerify in your AppDelegate file

Open your AppDelegate.mm file located under ios/MyApp/AppDelegate.mm and add the following lines

#import "OkHi/OkHi-Swift.h" // -- add this top of file
#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  [OkVerify startMonitoring]; // -- add this
  
  // -- rest of react native configuration -- //
  return YES;
}

OkHi initialisation

Add the following initialisation code to your App.js file in such a way that the code is executed whenever your app is opened.

Replace my_branch_id and my_client_key with the keys provided to you after sign up.

import React, {useEffect} from 'react';
import {View} from 'react-native';
import * as OkHi from 'react-native-okhi';
import AddressScreen from './AddressScreen';


const App = () => {
  useEffect(() => {
    OkHi.initialize({
      credentials: {
        branchId: '', // your branch ID
        clientKey: '', // your client key
      },
      context: {
        mode: 'prod',
      },
      notification: {
        title: 'Address verification in progress',
        text: 'Tap here to view your verification status.',
        channelId: 'okhi',
        channelName: 'OkHi Channel',
        channelDescription: 'OkHi verification alerts',
      },
    })
      .then(() => console.log('init done'))
      .catch(console.log); 
  }, [])
  return (
    <View>
      <AddressScreen />
    </View>
  );
};

export default App;

Test

To confirm that initialisation is working as expected, the `init done` log should be printed out in your console every time your app is opened.

Building with pro-guard enabled

If you have minifyEnabled set to true in your build.gradle file located android/app/build.gradle, you'll need to modify your proguard-rules.pro file, located android/app/proguard-rules.proas shown bellow to include classes required by the library to run.

-dontwarn sun.reflect.**
-dontwarn java.beans.**
-dontwarn sun.nio.ch.**
-dontwarn sun.misc.**

-keep class com.esotericsoftware.** {*;}

-keep class java.beans.** { *; }
-keep class sun.reflect.** { *; }
-keep class sun.nio.ch.** { *; }

-keep class com.snappydb.** { *; }
-dontwarn com.snappydb.**

# If you don't use OkHttp as a dep and the following

-dontwarn org.codehaus.mojo.animal_sniffer.*
-dontwarn javax.annotation.**
-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
-dontwarn org.codehaus.mojo.animal_sniffer.*
-dontwarn okhttp3.internal.platform.ConscryptPlatform
-dontwarn org.conscrypt.ConscryptHostnameVerifier

2. Create and verify an address (Client-side)

Add a button to your UI that would enable launching of OkHi address collection tool.

We recommend that you persist the verification state of the user in your app local storage. This state can be used to ensure that a user may only verify a predefined number of addresses. Usually one address for most use cases.

See below an example using AsyncStorage.

AddressScreen.jsx

import React, {useState} from 'react';
import {Button, View} from 'react-native';
import {
  isLocationServicesEnabled,
  OkHiLocationManager,
  request,
  openAppSettings
} from 'react-native-okhi';

const AddressScreen = () => {
  const [launch, setLaunch] = useState(false);
  // TODO 1: Change these to your own user details
  const user = {
    phone: '+234xxxxx', // It is important to provide your actual phone number, as a message will be sent to this number
    firstName: 'Gift',
    lastName: 'Moore',
    email: '[e-mail]', // It is important to use your actual email address, an email may be sent to the provided address
  };

  const handleOnSuccess = response => {
    console.log(response);
    response
      .startVerification()
      .then(async locationId => {
        console.log('started verification for: ' + locationId);
      })
      .catch(error => {
        console.log(error.code);
        console.log(error.message);
      });
  };

  return (
    <View>
      <Button title="Create address" onPress={() => setLaunch(true)} />
      <OkHiLocationManager
        launch={launch}
        user={user}
        onCloseRequest={() => setLaunch(false)}
        onError={console.log}
        onSuccess={handleOnSuccess}
        config={{streetView: true}}
      />
    </View>
  );
};

export default AddressScreen;

AddressScreen_with_asyncStorage.jsx

import React, {useEffect, useState} from 'react';
import {ActivityIndicator, Button, Text, View} from 'react-native';
import {
  isLocationServicesEnabled,
  OkHiLocationManager,
  request,
  openAppSettings
} from 'react-native-okhi';
import AsyncStorage from '@react-native-async-storage/async-storage';

const AddressScreen = () => {
  const [launch, setLaunch] = useState(false);
  const [loading, setLoading] = useState(true);
  const [homeAddressId, setHomeAddressId] = useState(null);
  // TODO 1: Change these to your own user details
  const user = {
    phone: '[phone]',
    firstName: 'Gift',
    lastName: 'Moore',
    email: '[e-mail]'
  }
  const persistAddressId = async (id, type) => {
    try {
      await AsyncStorage.setItem(`OkHiAddress:${type}`, id);
    } catch (error) {
      // Error saving data
    }
  };
  const retrieveAddress = async type => {
    try {
      const res = await AsyncStorage.getItem(`OkHiAddress:${type}`);
      return res;
    } catch (error) {
      // Error retrieving data
    }
  };
  useEffect(() => {
    setLoading(true);
    retrieveAddress('home')
      .then(res => {
        setHomeAddressId(res);
      })
      .finally(() => {
        setLoading(false);
      });
  }, []);

  const style = {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  };

  const rationale = {
    title: 'Location permissions',
    text: "To verify your address, allow YOUR_APP_NAME_HERE to check your phone's location, even when you're not using the app",
    successButton: {label: 'Grant'},
    denyButton: {label: 'Deny'},
  };

  const handleOnPress = () => {
    // TODO 2: Show a location permissions educational primer before requesting for background location permissions.
    request('always', rationale, async (status, error) => {
      const locationServicesAvailable = await isLocationServicesEnabled();
      console.log(error);
      if (status === 'authorizedAlways' && locationServicesAvailable) {
        setLaunch(true);
      }
      /* TODO 3: 
        When the user does not grant location permission the first time.
        1. Show a primer to educate them on how to do this in settings
        2. Provide a button to send them to settings.
          You may use `openAppSettings()` helper function
      */
    });
  };

  const handleOnSuccess = response => {
    console.log(response);
    response
      .startVerification()
      .then(async locationId => {
        console.log('started verification for: ' + locationId);
        await persistAddressId(locationId, 'home');
        setHomeAddressId(locationId);
      })
      .catch(error => {
        console.log(error.code);
        console.log(error.message);
      })
      .finally(() => {
        setLaunch(false);
      });
  };

  const RenderLoader = () => {
    return (
      <View style={style}>
        <ActivityIndicator />
      </View>
    );
  };

  if (loading) {
    return <RenderLoader />;
  }
  if (homeAddressId) {
    return <Text>Verification started for {homeAddressId}</Text>;
  }
  return (
    <View style={style}>
      <Button title="Create address" onPress={handleOnPress} />
      <OkHiLocationManager
        launch={launch}
        user={user}
        onCloseRequest={() => setLaunch(false)}
        onError={console.log}
        onSuccess={handleOnSuccess}
        config={{streetView: true}}
      />
    </View>
  );
};

export default AddressScreen;

If you're targeting Android versions >= 8 and you're using the OkVerify library you need to make sure your users select on "Allow always" when granting permissions otherwise the verification process won't work.

Test

If verification has started successfully:

Android:

• a persistent notification should show, indicating that verification is on going

iOS

• when you simulate a change in the location of the device, you should see the GPS icon lighting up at the top of the screen

Common issues:

• if background location permission is not granted, verification will not start

3. Add address endpoint (Server-side)

Here's a sample address payload that the client would get on successful address collection:

{
    "user": {
        "id": "B5QgvjE8WC",
        "phone": "+234xxxxx",
        "firstName": "Gift",
        "lastName": "Moore"
    },
    "location": {
        "id": "8F0yPK1Zdj",
        "lat": 6.442849499999999,
        "lon": 3.424421,
        "plusCode": "6FR5CCVF+4Q",
        "propertyName": "10",
        "streetName": "Raymond Njoku Street",
        "title": "Raymond Njoku Street",
        "subtitle": "10",
        "url": "https://okhi.me/8F0yPK1Zdj",
        "streetViewPanoId": "ufxEWf-zpKLcTxIe04o6Bg",
        "streetViewPanoUrl": "https://maps.googleapis.com/maps/api/streetview?size=640x640&fov=45&location=6.44275037195316%2C3.424513218681455&heading=321.4785708568841&pitch=-9.5945875978788",
        "userId": "B5QgvjE8WC",
        "displayTitle": "10, Raymond Njoku Street",
        "country": "Nigeria",
        "state": "Lagos",
        "city": "Eti-Osa",
        "countryCode": "ng"
    }
}

Create a secure endpoint on your server that your app can use to pass address details to your server. Remember to handle corner cases such as, address updates & multiple addresses if your app supports it.

Node

//Secure new address endpoint
app.post("/users/addresses", async (req) => {
  const { user, location } = req.body;
  const { id, firstName, lastName, phone } = user;
  const {
    id: locationId, displayTitle, title, subtitle, country, state, city, countryCode, lat, lon, plusCode, propertyName, streetName, url, streetViewPanoId, streetViewPanoUrl
  } = location;
  console.log(user, location);
  // Store the location.id. Used to match webhook updates
  return;
});

4. Handle verification events (Server-side)

OkHi sends verification status updates over a few days while verification is on going. Follow the webhook guide to setup a webhook and receive these verification status updates and run actions such as upgrading a user's KYC level.

5. Show verification status in app(Server- & Client-side)

Create a secure endpoint to enable your app to retrieve address details, including the verification status received from the webhook

Node

// Secure address retrieval endpoint
app.get("/users/addresses", (req) => {
  // Get data from db. Example result:
  const dbResult = {
    "id": "8F0yPK1Zdj",
    "status": "verified",
    "displayTitle": "10, Raymond Njoku Street",
    "title": "Raymond Njoku Street",
    "subtitle": "10",
    "country": "Nigeria",
    "state": "Lagos",
    "city": "Eti-Osa",
    "countryCode": "ng",
  }
  return dbResult;
});

Show the resulting address details and status on the address page in your app.

6. Test the integration

7. Customise the integration

Create a location permissions primer (Required)

Create your custom location permissions primer to educate your user on the requirement for location permissions. Make sure to follow our design best practices to ensure you meet the Google Play store and AppStore requirements.

Customise OkCollect (optional)

It is possible to completely transform the default appearance of OkHiLocationManager to better match your brand by providing values to the theme prop

const theme = {
 colors: {primary: '#005D67'},
 appBar: {
   backgroundColor: '#005D67',
   logo: 'https://mydomain.com/logo.png'
  },
};

<OkHiLocationManager
 user={user}
 launch={launch}
 theme={theme} // customizes apperance of buttons and app bar
 style={styles.locationManager} // customizes apperance of the wrapping container
 onSuccess={handleOnSuccess}
 onCloseRequest={handleCloseRequest}
 onError={handleOnError}
/>

Customising address type

You may turn off either of the OkHi address types. This is to allow your users to create either home or work addresses to better suit your use-case. By default both address types are on.

<OkHiLocationManager
  ...// normal configuration
  config={{ addressTypes: { home: true, work: false } }}
/>

Customise notification icon & color

You can specify a custom default icon and a custom default color by adding these lines inside the application tag to set the custom default icon and custom color. You'll need to have already created the icon resource in your android application. Icon assets can be created by following these steps

<application>
    <!-- Set custom default icon for OkVerify's foreground service -->
    <meta-data android:name="io.okhi.android_background_geofencing.foreground_notification_icon" android:resource="@drawable/ic_person_pin" />
    <!-- Set custom default icon color for OkVerify's foreground service -->
    <meta-data android:name="io.okhi.android_background_geofencing.foreground_notification_color" android:resource="@color/colorAccent" />
    
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

8. Getting ready to go live

Production credentials

Notify us that you'd like to cut a production build so we can supply production credentials.

Prepare for submission to Google Play store and App Store

Submitting an app to Google Play store and App Store that has background location permissions has a few extra requirements. Follow these guide to know what to expect and how to handle the extra requirements:

Publishing to Google Play store

Publishing to App Store

Troubleshooting

Incase you run into problems while integrating, review common issues here:

Next steps

Review Full integration sample project

Review React Native library documentation

Review OkHi integration best practices