rn-view-pdf

react-native-view-pdf

Library for displaying PDF documents in react-native

• android - uses Android PdfViewer. Targets minSdkVersion 19 and above.. By default stable version 2.8.2 is used. It's also possible to override it and use 3.1.0-beta.1 (this version allows to handle links, etc. and will be used when Android PdfViewer stable version is released). To change the version, define it in your build file:

buildscript {
  ext {
    ...
    pdfViewer = "3.1.0-beta.1"
  }
  ...
}

• ios - uses WKWebView. Targets iOS9.0 and above

• zero NPM dependencies

Getting started

$ npm install react-native-view-pdf --save

Mostly automatic installation

$ react-native link react-native-view-pdf

Manual installation

iOS

1. Add ReactNativeViewPDF project to your project
2. Under your build target general settings, add the library to your Linked Frameworks and Libraries
3. If you run into any issues, confirm that under Build Phases -> Link Binary With Libraries the library is present

Using CocoaPods

In your Xcode project directory open Podfile and add the following line:

pod 'RNPDF', :path => '../node_modules/react-native-view-pdf'

And install:

pod install

Android

1. Open up android/app/src/main/java/[...]/MainApplication.java

• Add import com.rumax.reactnative.pdfviewer.PDFViewPackage; to the imports at the top of the file
• Add new PDFViewPackage() to the list returned by the getPackages() method

1. Append the following lines to android/settings.gradle:

   include ':react-native-view-pdf'
   project(':react-native-view-pdf').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-view-pdf/android')
   

2. Insert the following lines inside the dependencies block in android/app/build.gradle:

   compile project(':react-native-view-pdf')
   

Note for Android

The Android project tries to retrieve the following properties:

• compileSdkVersion
• buildToolsVersion
• minSdkVersion
• targetSdkVersion

from the ext object if you have one defined in your Android's project root (you can read more about it here). If not, it falls back to its current versions (check the gradle file for additional information).

Windows

ReactWindows

N/A

Demo

Android	iOS

Quick Start

// With Flow type annotations (https://flow.org/)
import PDFView from 'react-native-view-pdf';
// Without Flow type annotations
// import PDFView from 'react-native-view-pdf/lib/index';

const resources = {
  file: Platform.OS === 'ios' ? 'downloadedDocument.pdf' : '/sdcard/Download/downloadedDocument.pdf',
  url: 'https://www.ets.org/Media/Tests/TOEFL/pdf/SampleQuestions.pdf',
  base64: 'JVBERi0xLjMKJcfs...',
};

export default class App extends React.Component {
  render() {
    const resourceType = 'base64';

    return (
      <View style={{ flex: 1 }}>
        {/* Some Controls to change PDF resource */}
        <PDFView
          fadeInDuration={250.0}
          style={{ flex: 1 }}
          resource={resources[resourceType]}
          resourceType={resourceType}
          onLoad={() => console.log(`PDF rendered from ${resourceType}`);}
          onError={() => console.log('Cannot render PDF', error)}
        />
      </View>
    );
  }
}

Use the demo project to:

• Test the component on both android and iOS
• Render PDF using URL, BASE64 data or local file
• Handle error state

Props

Name	Android	iOS	Description
resource	✓	✓	A resource to render. It's possible to render PDF from file, url or base64
resourceType	✓	✓	Should correspond to resource and can be: file, url or base64
fileFrom	✗	✓	iOS ONLY: In case if resourceType is set to file, there are different way to search for it on iOS file system. Currently Documents and app’s bundle are supported.
onLoad	✓	✓	Callback that is triggered when loading is completed
onError	✓	✓	Callback that is triggered when loading has failed. And error is provided as a function parameter
style	✓	✓	A style
fadeInDuration	✓	✓	Fade in duration (in ms, defaults to 0.0) to smoothly fade the webview into view when pdf loading is completed
urlProps	✓	✓	Extended properties for url type that allows to specify HTTP Method, HTTP headers and HTTP body
onPageChanged	✓	✗	Callback that is invoked when page is changed. Provides active page and total pages information
onScrolled	✓	✓	Callback that is invoked when PDF is scrolled. Provides offset value in a range between 0 and 1. Currently only 0 and 1 are supported.

Methods

reload

Allows to reload the PDF document. This can be useful in such cases as network issues, document is expired, etc. To reload the document you will need a ref to the component:

...

render() {
  return (
    <PDFView
      ...
      ref={(ref) => this._pdfRed = ref} />
  );
}

And trigger it by calling reloadPDF:

reloadPDF = async () => {
  const pdfRef = this._pdfRef;

  if (!pdfRef) {
    return;
  }

  try {
    await pdfRef.reload();
  } catch (err) {
    console.err(err.message);
  }
}

Or check the demo project which also includes this functionality.

Development tips

On android for the file type it is required to request permissions to read/write. You can get more information in PermissionsAndroid section from react native or Request App Permissions from android documentation. Demo project provides an example how to implement it using Java, check the MainActivity.java and AndroidManifest.xml files.

Before trying file type in demo project, open sdcard/Download folder in Device File Explorer and store some downloadedDocument.pdf document that you want to render.

On iOS, using resource file will make the component lookup in two places. First, it will attempt to locate the file in the Bundle. If it cannot locate it there, it will search the Documents directory. For more information on the iOS filesystem access at runtime of an application please refer the official documentation. Note here that the resource will always need to be a relative path from the Documents directory for example and also do NOT put the scheme in the path (so no file://.....).

You can find an example of both usage of the Bundle and Documents directory for rendering a pdf from file on iOS in the demo project.

In demo project you can also run the simple server to serve PDF file. To do this navigate to demo/utils/ and start the server node server.js. (Do not forget to set proper IP adress of the server in demo/App.js)

License

MIT

Authors

• sanderfrenken
• rumax

Other information

• Generated with react-native-create-library
• Zero JavaScript dependency. Which means that you do not bring other dependencies to your project
• If you think that something is missing or would like to propose new feature, please, discuss it with authors
• Please, feel free to ⭐️ the project. This gives us a confidence that you like it and we did a great job by publishing and supporting it 🤩
• If you are using ProGuard, add following rule to proguard config file:

    -keep class com.shockwave.**