React Native Dev

React Native Dev

1613650920

A <Pdf /> Component for React Native

react-native-pdf

A react native PDF view component (cross-platform support)

Feature

  • read a PDF from url/local file/asset and can cache it.
  • display horizontally or vertically
  • drag and zoom
  • double tap for zoom
  • support password protected pdf
  • jump to a specific page in the pdf

Supported versions

We use rn-fetch-blob to handle file system access in this package, So you should install react-native-pdf and rn-fetch-blob

The table below shows the supported versions of React Native and rn-fetch-blob for different versions of react-native-pdf.

React Native 0.4x - 0.56 0.57 0.60+ 0.62+
react-native-pdf 4.x.x - 5.0.x 5.0.9+ 6.0.0+ 6.2.0+
rn-fetch-blob 0.10.15 0.10.15 0.11.0+ 0.11.0+
progress-bar-android 1.0.3+
progress-view 1.0.3+

Currently, Windows support is partial. For Windows, it’s necessary to install rn-fetch-blob from the PR that adds Windows support:

yarn add github:joltup/rn-fetch-blob#pull/701/head

Installation

# Using npm
npm install react-native-pdf rn-fetch-blob @react-native-community/progress-bar-android @react-native-community/progress-view --save

# or using yarn:
yarn add react-native-pdf rn-fetch-blob @react-native-community/progress-bar-android @react-native-community/progress-view

For Windows, it’s necessary to install rn-fetch-blob from the PR that adds Windows support:

yarn add github:joltup/rn-fetch-blob#pull/701/head

Then follow the instructions for your platform to link react-native-pdf into your project:

iOS installation

iOS details

React Native 0.60 and above

Run pod install in the ios directory. Linking is not required in React Native 0.60 and above.

React Native 0.59 and below

react-native link rn-fetch-blob
react-native link @react-native-community/progress-bar-android
react-native link @react-native-community/progress-view
react-native link react-native-pdf

Android installation

Android details

If you use RN 0.59.0 and above, please add following to your android/app/build.gradle**

android {

+    packagingOptions {
+       pickFirst 'lib/x86/libc++_shared.so'
+       pickFirst 'lib/x86_64/libjsc.so'
+       pickFirst 'lib/arm64-v8a/libjsc.so'
+       pickFirst 'lib/arm64-v8a/libc++_shared.so'
+       pickFirst 'lib/x86_64/libc++_shared.so'
+       pickFirst 'lib/armeabi-v7a/libc++_shared.so'
+     }

   }

React Native 0.59.0 and below

react-native link rn-fetch-blob
react-native link @react-native-community/progress-bar-android
react-native link @react-native-community/progress-view
react-native link react-native-pdf

Windows installation

Windows details

  • Open your solution in Visual Studio 2019 (eg. windows\yourapp.sln)
  • Right-click Solution icon in Solution Explorer > Add > Existing Project…
  • Add node_modules\@react-native-community\progress-view\windows\progress-view\progress-view.vcxproj
  • If running RNW 0.62: add node_modules\react-native-pdf\windows\RCTPdf\RCTPdf.vcxproj
  • If running RNW 0.62: add node_modules\rn-fetch-blob\windows\RNFetchBlob\RNFetchBlob.vcxproj
  • Right-click main application project > Add > Reference…
    • Select progress-view and in Solution Projects
    • If running 0.62, also select RCTPdf and RNFetchBlob
  • In app pch.h add #include "winrt/progress_view.h" and #include "winrt/RCTPdf.h"
    • If running 0.62, also select #include "winrt/RNFetchBlob.h"
  • In App.cpp add PackageProviders().Append(winrt::progress_view::ReactPackageProvider()); before InitializeComponent();
  • If running RNW 0.62, also add PackageProviders().Append(winrt::RCTPdf::ReactPackageProvider()); and PackageProviders().Append(winrt::RNFetchBlob::ReactPackageProvider());
Bundling PDFs with the app

To add a test.pdf like in the example add:

<None Include="..\..\test.pdf">
  <DeploymentContent>true</DeploymentContent>
</None>

in the app .vcxproj file, before <None Include="packages.config" />.

FAQ

FAQ details

Q1. After installation and running, I can not see the pdf file. A1: maybe you forgot to excute react-native link or it does not run correctly. You can add it manually. For detail you can see the issue #24 and #2

Q2. When running, it shows 'Pdf' has no propType for native prop RCTPdf.acessibilityLabel of native type 'String' A2. Your react-native version is too old, please upgrade it to 0.47.0+ see also #39

Q3. When I run the example app I get a white/gray screen / the loading bar isn’t progressing . A3. Check your uri, if you hit a pdf that is hosted on a http you will need to do the following:

iOS: add an exception for the server hosting the pdf in the ios info.plist. Here is an example :

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSExceptionDomains</key>
  <dict>
    <key>yourserver.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
  </dict>
</dict>

Android: see here

Q4. why doesn’t it work with react native expo?. A4. Expo does not support native module. you can read more expo caveats here

Q5. Why can’t I run the iOS example? 'Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65.' A5. Run the following commands in the project folder (e.g. react-native-pdf/example) to ensure that all dependencies are available:

yarn install (or npm install)
cd ios
pod install
cd ..
react-native run-ios

ChangeLog

ChangeLog details

v6.2.2

  1. Fixed incorrect type of onPageSingleTap and onScaleChanged argument
  2. Fixed included missing setPage method in TypeScript and Flow types
  3. fixed Xcode 12 compatibility

v6.2.1

  1. Fixed typescript onLoadComplete() definition
  2. Switched the AndroidPdfViewer dependency from Barteksc repo to TalbotGooday
  3. Add singlePage property

v6.2.0

  1. Fixed ReferenceError, url should be source.uri
  2. Dependency bump to support React-Native >= 0.62

v6.1.2

  1. Fixed wrong scale returned from onScaleChanged()
  2. Fixed iOS Double Tap zoom
  3. Fixed Some critical typo fixes

v6.1.1

  1. Fixed undefined is not an object, crashing on ios

v6.1.0

  1. Fixed react-native warning on componentWill*
  2. Fixed onPageSingleTap
  3. Set the PDF View background color to be transparent On iOS

v6.0.1

  1. Expose prop to trust self-signed SSL certs
  2. Use ViewStyleProp in index.js.flow, not deprecated StyleSheet.Styles

v6.0.0

  1. Add JS callback onPressLink for pdf link press listener
  2. Fix calling setState while unmounted

v5.1.7

  1. Downgraded to AndroidPdfViewer 3.1.0-beta.1

v5.1.6

  1. Fixed componentWillReceiveProps and componentWillMount warnings

v5.1.5

  1. Added setPage() method
  2. Upgraded to AndroidPdfViewer to 3.2.0-beta.1
  3. Fixed some codes ,readme and sample

v5.1.4

  1. Updated example project to RN 0.60.4
  2. Fixed blank view after native module got recycled in onDetachedFromWindow event
  3. Restore singleTap, only callback, do not change scale

v5.1.3

  1. Removed singleTap action from iOS, make the same with Android.

[more]

Example

/**
 * Copyright (c) 2017-present, Wonday (@wonday.org)
 * All rights reserved.
 *
 * This source code is licensed under the MIT-style license found in the
 * LICENSE file in the root directory of this source tree.
 */

import React from 'react';
import { StyleSheet, Dimensions, View } from 'react-native';

import Pdf from 'react-native-pdf';

export default class PDFExample extends React.Component {
    render() {
        const source = {uri:'http://samples.leanpub.com/thereactnativebook-sample.pdf',cache:true};
        //const source = require('./test.pdf');  // ios only
        //const source = {uri:'bundle-assets://test.pdf'};

        //const source = {uri:'file:///sdcard/test.pdf'};
        //const source = {uri:"data:application/pdf;base64,JVBERi0xLjcKJc..."};

        return (
            <View style={styles.container}>
                <Pdf
                    source={source}
                    onLoadComplete={(numberOfPages,filePath)=>{
                        console.log(`number of pages: ${numberOfPages}`);
                    }}
                    onPageChanged={(page,numberOfPages)=>{
                        console.log(`current page: ${page}`);
                    }}
                    onError={(error)=>{
                        console.log(error);
                    }}
                    onPressLink={(uri)=>{
                        console.log(`Link presse: ${uri}`)
                    }}
                    style={styles.pdf}/>
            </View>
        )
  }
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        justifyContent: 'flex-start',
        alignItems: 'center',
        marginTop: 25,
    },
    pdf: {
        flex:1,
        width:Dimensions.get('window').width,
        height:Dimensions.get('window').height,
    }
});

Configuration

Property Type Default Description iOS Android Windows FirstRelease
source object not null PDF source like {uri:xxx, cache:false}. see the following for detail. ✔ ✔ ✔ <3.0
page number 1 initial page index ✔ ✔ ✔ <3.0
scale number 1.0 should minScale<=scale<=maxScale ✔ ✔ ✔ <3.0
minScale number 1.0 min scale ✔ ✔ ✔ 5.0.5
maxScale number 3.0 max scale ✔ ✔ ✔ 5.0.5
horizontal bool false draw page direction, if you want to listen the orientation change, you can use [react-native-orientation-locker] ✔ ✔ ✔ <3.0
fitWidth bool false if true fit the width of view, can not use fitWidth=true together with scale ✔ ✔ ✔ <3.0, abandoned from 3.0
fitPolicy number 2 0:fit width, 1:fit height, 2:fit both(default) ✔ ✔ ✔ 3.0
spacing number 10 the breaker size between pages ✔ ✔ ✔ <3.0
password string “” pdf password, if password error, will call OnError() with message “Password required or incorrect password.” ✔ ✔ ✔ <3.0
style object {backgroundColor:“#eee”} support normal view style, you can use this to set border/spacing color… ✔ ✔ ✔ <3.0
activityIndicator Component when loading show it as an indicator, you can use your component ✔ ✔ ✖ <3.0
activityIndicatorProps object {color:‘#009900’, progressTintColor:‘#009900’} activityIndicator props ✔ ✔ ✖ 3.1
enableAntialiasing bool true improve rendering a little bit on low-res screens, but maybe course some problem on Android 4.4, so add a switch ✖ ✔ ✖ <3.0
enablePaging bool false only show one page in screen ✔ ✔ ✔ 5.0.1
enableRTL bool false scroll page as “page3, page2, page1” ✔ ✖ ✔ 5.0.1
enableAnnotationRendering bool true enable rendering annotation, notice:iOS only support initial setting,not support realtime changing ✔ ✔ ✖ 5.0.3
trustAllCerts bool true Allow connections to servers with self-signed certification ✔ ✔ ✖ 6.0.?
singlePage bool false Only show first page, useful for thumbnail views ✔ ✔ ✔ 6.1.2
onLoadProgress function(percent) null callback when loading, return loading progress (0-1) ✔ ✔ ✖ <3.0
onLoadComplete function(numberOfPages, path, {width, height}, tableContents) null callback when pdf load completed, return total page count, pdf local/cache path, {width,height} and table of contents ✔ ✔ ✔ but without tableContents <3.0
onPageChanged function(page,numberOfPages) null callback when page changed ,return current page and total page count ✔ ✔ ✔ <3.0
onError function(error) null callback when error happened ✔ ✔ ✔ <3.0
onPageSingleTap function(page) null callback when page was single tapped ✔ ✔ ✔ 3.0
onScaleChanged function(scale) null callback when scale page ✔ ✔ ✔ 3.0
onPressLink function(uri) null callback when link tapped ✔ ✔ ✖ 6.0.0
parameters of source
parameter Description default iOS Android Windows
uri pdf source, see the forllowing for detail. required ✔ ✔ ✔
cache use cache or not false ✔ ✔ ✖
expiration cache file expired seconds (0 is not expired) 0 ✔ ✔ ✖
method request method when uri is a url “GET” ✔ ✔ ✖
headers request headers when uri is a url {} ✔ ✔ ✖
types of source.uri
Usage Description iOS Android Windows
{uri:"http://xxx/xxx.pdf"} load pdf from a url ✔ ✔ ✔
{require("./test.pdf")} load pdf relate to js file (do not need add by xcode) ✔ ✖ ✖
{uri:"bundle-assets://path/to/xxx.pdf"} load pdf from assets, the file should be at android/app/src/main/assets/path/to/xxx.pdf ✖ ✔ ✖
{uri:"bundle-assets://xxx.pdf"} load pdf from assets, you must add pdf to project by xcode. this does not support folder. ✔ ✖ ✖
{uri:"data:application/pdf;base64,JVBERi0xLjcKJc..."} load pdf from base64 string ✔ ✔ ✔
{uri:"file:///absolute/path/to/xxx.pdf"} load pdf from local file system ✔ ✔ ✔
{uri:"ms-appx:///xxx.pdf"}} load pdf bundled with UWP app ✖ ✖ ✔

Methods

Methods operate on a ref to the PDF element. You can get a ref with the following code:

return (
  <Pdf
    ref={(pdf) => { this.pdf = pdf; }}
    source={source}
    ...
  />
);
setPage()

setPage(pageNumber)

Set the current page of the PDF component. pageNumber is a positive integer. If pageNumber > numberOfPages, current page is not changed.

Example:

this.pdf.setPage(42); // Display the answer to the Ultimate Question of Life, the Universe, and Everything

Download Details:

Author: wonday

Source Code: https://github.com/wonday/react-native-pdf

#react-native #react #mobile-apps

What is GEEK

Buddha Community

A <Pdf /> Component for React Native
Autumn Blick

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