react-native-webview

What is react-native-webview?

The react-native-webview package is a powerful tool for embedding web content into a React Native application. It allows developers to render web pages, handle navigation, and interact with web content using JavaScript. This package is highly customizable and supports various features such as injecting JavaScript, handling navigation events, and more.

What are react-native-webview's main functionalities?

Basic WebView

This feature allows you to embed a basic web page within your React Native application. The WebView component takes a source prop that specifies the URL of the web page to be loaded.

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

const MyWebView = () => (
  <WebView
    source={{ uri: 'https://www.example.com' }}
    style={{ marginTop: 20 }}
  />
);

export default MyWebView;

Injecting JavaScript

This feature allows you to inject JavaScript into the web page being loaded. The injectedJavaScript prop takes a string of JavaScript code that will be executed once the page has loaded.

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

const MyWebView = () => (
  <WebView
    source={{ uri: 'https://www.example.com' }}
    injectedJavaScript={"document.body.style.backgroundColor = 'red';"}
    style={{ marginTop: 20 }}
  />
);

export default MyWebView;

Handling Navigation Events

This feature allows you to handle navigation events within the WebView. The onNavigationStateChange prop takes a function that will be called whenever the navigation state changes, providing details about the navigation event.

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

const MyWebView = () => (
  <WebView
    source={{ uri: 'https://www.example.com' }}
    onNavigationStateChange={(navState) => {
      console.log('Navigation state changed:', navState);
    }}
    style={{ marginTop: 20 }}
  />
);

export default MyWebView;

Other packages similar to react-native-webview

react-native-inappbrowser-reborn

The react-native-inappbrowser-reborn package allows you to open web content in an in-app browser. It provides a more native feel compared to a WebView and supports features like custom animations and toolbar customization. However, it is not as flexible as react-native-webview for embedding web content directly within your application.

README

React Native WebView - a Modern, Cross-Platform WebView for React Native

React Native WebView is a modern, well-supported, and cross-platform WebView for React Native. It is intended to be a replacement for the built-in WebView (which will be removed from core).

Core Maintainers - Sponsoring companies

This project is maintained for free by these people using both their free time and their company work time.

• Thibault Malbranche (Twitter @titozzz) from Brigad
• Jamon Holmgren (Twitter @jamonholmgren) from Infinite Red

Platforms Supported

• iOS (both UIWebView and WKWebView)
• Android

Note: React Native WebView is not currently supported by Expo unless you "eject".

Getting Started

Read our Getting Started Guide. If any step seems unclear, please create a detailed issue.

Versioning

This project follows semantic versioning. We do not hesitate to release breaking changes but they will be in a major version.

Breaking History:

• 2.0.0 - First release this is a replica of the core webview component
• 3.0.0 - WKWebview: Add shared process pool so cookies and localStorage are shared across webviews in iOS (enabled by default).
• 4.0.0 - Added cache (enabled by default).
• 5.0.1 - Refactored the old postMessage implementation for communication from webview to native.

Upcoming:

• UIWebView removal
• this.webView.postMessage() removal (never documented and less flexible than injectJavascript)
• Typescript rewrite
• Kotlin rewrite
• Maybe Swift rewrite

Usage

Import the WebView component from react-native-webview and use it like so:

import React, { Component } from "react";
import { StyleSheet, Text, View } from "react-native";
import { WebView } from "react-native-webview";

// ...
class MyWebComponent extends Component {
  render() {
    return (
      <WebView
        source={{ uri: "https://facebook.github.io/react-native/" }}
      />
    );
  }
}

For more, read the API Reference and Guide. If you're interested in contributing, check out the Contributing Guide.

Common issues

• If you're getting Invariant Violation: Native component for "RNCWKWebView does not exist" it likely means you forgot to run react-native link or there was some error with the linking process
• There's a problem on some Android devices where the webview could overlap previous siblings from same parent. To fix this, wrap the WebView in a View with style overflow: hidden.

Contributing

See Contributing.md

Contributors

Thanks goes to these wonderful people (emoji key):

Thibault Malbranche 💻 🤔 👀 📖 🚧 ⚠️ 🚇 💬	Jamon Holmgren 💻 🤔 👀 📖 🚧 ⚠️ 💡 💬	Andrei Pfeiffer 💻 👀 🤔	Michael Diarmid 💻 👀 🤔 🔧	Scott Mathson 💻 📖	Margaret 💻 📖	Jordan Sexton 💻 📖
Malcolm Scruggs 💻 🔧 ⚠️	Momazo7u7 📖	Marco 📖	Julien Eluard 📖

This project follows the all-contributors specification. Contributions of any kind welcome!

License

MIT