A component which takes HTML content and renders it as native views, with customisable style and handling of links, etc.

In action (from ReactNativeHackerNews):

Table of contents

• Install
• Usage
• Example
• Changelog

Install

npm install react-native-htmlview --save

Usage

props:

• value: a string of HTML content to render
• onLinkPress: a function which will be called with a url when a link is pressed. Passing this prop will override how links are handled (defaults to calling Linking.openURL(url))
• onLinkLongPress: a function which will be called with a url when a link is long pressed. The default is null.
• stylesheet: a stylesheet object keyed by tag name, which will override the styles applied to those respective tags.
• renderNode: a custom function to render HTML nodes however you see fit. If the function returns undefined (not null), the default renderer will be used for that node. The function takes the following arguments:
  • node the html node as parsed by htmlparser2
  • index position of the node in parent node's children
  • siblings parent node's children (including current node)
  • parent parent node
  • defaultRenderer the default rendering implementation, so you can use the normal rendering logic for some subtree. defaultRenderer takes the following arguments:
    • node the node to render with the default rendering logic
    • parent the parent of node of node
• bullet: text which is rendered before every li inside a ul
• paragraphBreak: text which appears after every p element
• lineBreak: text which appears after text elements which create a new line (br, headings)
• addLineBreaks: when explicitly false, effectively sets paragraphBreak and lineBreak to null
• NodeComponent, nodeComponentProps, RootComponent, rootComponentProps, TextComponent, textComponentProps: see Customizing things even further below.

Example

import React from 'react';
import {StyleSheet} from 'react-native';
import HTMLView from 'react-native-htmlview';
class App extends React.Component {
  render() {
    const htmlContent = `<p><a href="http://jsdf.co">&hearts; nice job!</a></p>`;
    return (
      <HTMLView
        value={htmlContent}
        stylesheet={styles}
      />
    );
  }
}
const styles = StyleSheet.create({
  a: {
    fontWeight: '300',
    color: '#FF3366', // make links coloured pink
  },
});

Custom Link Handling

When a link is clicked, by default ReactNative.Linking.openURL is called with the link url. You can customise what happens when a link is clicked with onLinkPress:

class App extends React.Component {
  render() {
    return (
      <HTMLView
        value={this.props.html}
        onLinkPress={(url) => console.log('clicked link: ', url)}
      />
    );
  }
}

If you're getting the error "undefined is not an object (evaluating 'RCTLinkingManager.openURL’)” from the LinkingIOS API, try adding ‘RCTLinking' to the project's 'Linked Frameworks and Libraries’. You might have to find RCTLinking.xcodeproj in the react-native package dir and drag that into your main Xcode project first.

Custom Element Rendering

You can implement the renderNode prop to add support for unsupported element types, or override the rendering for supported types. renderNode is a function which is called with the type and attributes of each HTML element found in the input HTML, and from this function you can return a React element to be rendered in its place. If you return null nothing will be rendered in place of this element or its children. If you return undefined (or don't return anything) then HTMLView will drop back to its default rendering for that type of HTML element.

For example, here is how you might implement the <iframe> element: