Native DOT SDK in React Native

This repository contains a basic example on how to use DOT SDK (iOS/Android) in React Native (typescript).

Getting Started

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding. This project was developed and tested using Node.js v22.2.0.

Step 1: Set up project

To obtain a license file, please contact [email protected].

Android

1. Copy the license file to android/app/src/main/res/raw/dot_license.lic.

iOS

1. Copy the license file to ios/Assets/dot_license.lic.
2. Run pod install --repo-update from ios directory.
3. Open DotReactNativeSamples.xcworkspace and update app signing configuration using your certificates and profiles.

Step 2: Start the Metro Server

You will need to start Metro, the JavaScript bundler that ships with React Native. First, make sure you have all dependencies. Run:

npm install

To start Metro, run the following command from the root of your this repository:

# using npm
npm start

# OR using Yarn
yarn start

Step 3: Start Application

Let Metro Bundler run in its own terminal. Open a new terminal from the root of this repository. Run the following command to start your Android or iOS app:

For Android

# using npm
npm run android

# OR using Yarn
yarn android

For iOS

# using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see DOT SDK React Native Samples App running in your Android Emulator or iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.

Technical details

Android

Code responsible for bridge between the Kotlin and Typescript code can be found in:

• DotSdkReactModule.kt - A native module is a Kotlin class that extends the ReactContextBaseJavaModule class and implements the functionality required by the TypeScript. Most methods (annotated by @ReactModule) are callable from TypeScript and are responsible for starting activities and retrieving data from them.
• DotSdkReactPackage.kt - Apps package that extends ReactPackage and uses createNativeModules to register a native module.
• MainApplication.kt - We have to provide the package to getPackages method of the MainApplication - this is pre-existing file/class created by react-native

More information about native modules here: https://facebook.github.io/react-native/docs/native-modules-android.

iOS

Code responsible for bridge between the Swift and Typescript code can be found in:

• DotSdkReactModuleBridge.m - A native module bridge which registers required information with React Native.
• DotSdkReactModule.swift - A native module Swift class which implements the functionality required by the TypeScript.

More information about native modules here: https://reactnative.dev/docs/native-modules-ios.

ReactNative

We can use DotSdk class found in NativeModules exported from react-native. It will call native code for the corresponding platform (iOS/Android).

Code can be found in App.tsx (root of the repo).

Example:

import { NativeModules } from 'react-native';

const dotSdk = NativeModules.DotSdk

// Initialize DOT SDK
dotSdk.initialize()
   .then(...)
   .catch(...);

...
...

// Start Document Auto Capture component

dotSdk.startDocumentAutoCapture(null)
   .then(...)
   .catch(...);