Daniel Vicory 4d4b5e2387
Synchronously decide if Android WebView should load a URL or not. (#1590)
This solves a class of issues when the WebView loses "context"
that a subsequent page load is the same as what was attempted
to be loaded previously. This solves a bug where a HTTP redirect
in combination with history manipulations causes a user to be
stuck and prevented from going back. Since WebView requests are
allowed to happen normally, debugging the WebView and tracking
redirects and page load initiators is more accurate and easier.
This will also bypass bridge latency and provide a faster navigation.

To do this, we must lock in the shouldOverrideUrlLoading callback
and send an event to JS. Currently, this callback is ran on
the main UI thread, of which we have no control over. This is
problematic as using the bridge in most ways seems to require
the main UI thread, which will cause a deadlock. However, using
BatchedBridge for Java->JS and a synchronous method for JS->Java
doesn't cause any problems. Additionally, it's been designed so
that if WebView suddenly runs the callback on a different thread
allowing for concurrency, it will continue to work.
2020-08-26 08:59:51 +02:00
2018-09-10 18:46:07 -06:00
2018-09-10 18:46:07 -06:00
2018-09-08 10:42:02 -07:00
2020-08-25 23:30:28 +00:00

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

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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.

Platforms Supported

  • iOS
  • Android
  • macOS
  • Windows

Note: Expo support for React Native WebView started with Expo SDK v33.0.0.

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:

Current Version: version

  • 8.0.0 - onNavigationStateChange now triggers with hash url changes

  • 7.0.1 - Removed UIWebView

  • 6.0.2 - Update to AndroidX. Make sure to enable it in your project's android/gradle.properties. See Getting Started Guide.

  • 5.0.1 - Refactored the old postMessage implementation for communication from webview to native.

  • 4.0.0 - Added cache (enabled by default).

  • 3.0.0 - WKWebview: Add shared process pool so cookies and localStorage are shared across webviews in iOS (enabled by default).

  • 2.0.0 - First release this is a replica of the core webview component

Upcoming:

  • this.webView.postMessage() removal (never documented and less flexible than injectJavascript) -> how to migrate
  • 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://reactnative.dev/' }} />;
  }
}

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 "RNCWebView does not exist" it likely means you forgot to run react-native link or there was some error with the linking process

Contributing

See Contributing.md

Contributors

Thanks goes to these wonderful people (emoji key):

Thibault Malbranche
Thibault Malbranche

💻 🤔 👀 📖 🚧 ⚠️ 🚇 💬
Jamon Holmgren
Jamon Holmgren

💻 🤔 👀 📖 🚧 ⚠️ 💡 💬
Andrei Pfeiffer
Andrei Pfeiffer

💻 👀 🤔
Michael Diarmid
Michael Diarmid

💻 👀 🤔 🔧
Scott Mathson
Scott Mathson

💻 📖
Margaret
Margaret

💻 📖
Jordan Sexton
Jordan Sexton

💻 📖
Malcolm Scruggs
Malcolm Scruggs

💻 🔧 ⚠️
Momazo7u7
Momazo7u7

📖
Marco
Marco

📖
Julien Eluard
Julien Eluard

📖
Jian Wei
Jian Wei

💻 📖
Sergei Butko
Sergei Butko

📖
TMomemt
TMomemt

💻
Eric Lewis
Eric Lewis

💻 📖
Daniel Vicory
Daniel Vicory

💻 📖

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

License

MIT

Translations

This readme is available in:

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JavaScript 21.4%
Java 20.7%
Objective-C 20.2%
C++ 5.4%
Other 5.1%