React-native-web-screen NPM

React Native Web Screen

React Native Web Screen is an open source library that will allow you to easily bring your web application into the React Native mobile world. It allows you to render web views as if they were real native screens, caching the results and providing native animation between screens. You can easily move your entire web app, or embed a few screens that pretend to be native, without having to code them second time in React Native.

Installation

Install the library using:

npm install react-native-web-screen

yarn add react-native-web-screen

The library should be used alongside React Navigation library, follow these steps to install it.

Basic example

The library provides you with simple API to define the relationship between the web and native screens. The react-native-web-screen uses React Navigation configurable links to handle navigation within the app. You can follow react-navigation documentation to create your navigation stack and provide mapping between URLs in app and screens. You must define only those paths that are important for your app and use matchers for fallback.

You should also define your custom WebView component that will be using VisitableView hood, to be able to customize its behavior.

Let's say you want to add a web Welcome screen to your React Native app.

import { NavigationContainer } from '@react-navigation/native';
import { createNativeStackNavigator } from '@react-navigation/native-stack';
import React, { useCallback } from 'react';
import { VisitProposal, VisitableView } from 'react-native-turbo';
import {
  LinkingConfig,
  getLinkingObject,
  useCurrentUrl,
  useWebviewNavigate,
} from 'react-native-web-screen';

const Stack = createNativeStackNavigator();

const baseURL = 'http://your-web-app-base-url/';

// see https://reactnavigation.org/docs/navigation-container/#linking
const linkingConfig: LinkingConfig = {
  screens: {
    Initial: '',
    Welcome: 'welcome',
    Fallback: '*',
  },
};

const linking = getLinkingObject(baseURL, linkingConfig);
// see https://github.com/hotwired/turbo-ios/blob/c476bac66f260adbfe930ed9a151e7637973ff99/Source/Session/Session.swift#L4-L7
const sessionHandle = 'app-dynamic-session-handle';

const WebView: React.FC = () => {
  const currentUrl = useCurrentUrl(baseURL, linkingConfig);
  const { navigateTo } = useWebviewNavigate();

  const onVisitProposal = useCallback(
    ({ action: actionType, url }: VisitProposal) => {
      navigateTo(url, actionType);
    },
    [navigateTo]
  );

  return (
    <VisitableView
      onVisitProposal={onVisitProposal}
      sessionHandle={sessionHandle}
      url={currentUrl}
      applicationNameForUserAgent="Turbo Native"
    />
  );
};

const App: React.FC = () => {
  return (
    <NavigationContainer linking={linking}>
      <Stack.Navigator>
        <Stack.Screen name="Initial" component={YourNativeComponent} />
        <Stack.Screen
          name="Welcome"
          component={WebView}
          options={{ title: 'Welcome' }}
        />
        <Stack.Screen name="Fallback" component={WebView} />
      </Stack.Navigator>
    </NavigationContainer>
  );
};

export default App;

Now you can easily navigate to the Welcome web screen using react navigation API. Navigating http://your-web-app-base-url in the webview will result in opening react native screen Initial.

Nested navigators

You are also able to use complex navigator structures inside your app. Just make sure that your navigation definition and linking object match.

Advanced usage

This library under the hood uses react-native-turbo. You can use React Navigation support (described here) or standalone React VisitableView.tsx component for more advanced cases. You can also define your own WebScreen component.

Check out react-native-turbo for more info.

Using custom WebScreen component

You can use your custom WebScreen component by passing it to the buildWebScreen config. This can be useful if you want to define custom logic for each screen.

import { WebView } from 'react-native-webview';

const webScreens = buildWebScreen(webScreenConfig, {
  webScreenComponent: WebScreen,
});

To obtain url for current screen, use useCurrentUrl hook function.

Defining custom behavior for `navigateTo` function

useWebviewNavigate hook returns two utilities:

navigateTo - function that allows you to navigate to a given URL and action
getDispatchAction - function which might be useful when you want to add more functionalities to behavior of navigateTo function. This function returns:
- actionToDispatch - action which can be dispatched via navigator.dispatch
- willChangeTopmostNavigator - function that returns true if the navigator will change the topmost navigator