kmpdfkit_demo

ComPDFKit React-Native PDF Library

Overview

ComPDFKit PDF SDK seamlessly operates on Web, Windows, Android, iOS, Mac, and Server, with support for cross-platform frameworks such as React Native, Flutter, etc.

ComPDFKit for React Native allows you to quickly and seamlessly add PDF functions to any React Native application, elevating your Android and iOS apps with annotations, content editing, conversion, data extraction, etc.

Related

• ComPDFKit PDF Library for iOS
• ComPDFKit PDF Library for Android
• ComPDFKit PDF SDK - Flutter Library
• How to Build a React Native PDF Viewer
• Recognize and extract data from PDFs with our online Extract Demo
• ComPDFKit API allows you to get 1000 files processing monthly now! Just sign up for a free trial and enjoy comprehensive PDF functions.

Prerequisites

• A license is required for trial. Please contact our sales team to obtain a free trial license.
• npm or yarn
• ComPDFKit SDK => 2.0.1
• react-native => 0.71.0
• Android minSdkVersion of 21 or higher
• Android targetSdkVersion of 23 or higher
• iOS 11 or higher

Installation

First, please follow the official React Native environment setup guide, configure iOS and Android environments, and create a React Native project.

If you have already created a React Native project, you can skip directly to Installing the ComPDFKit Dependency.

Creating a New Project

Let's create a simple app that integrates ComPDFKit for React Native.

1. In the terminal app, change the current working directory to the location you wish to save your project. In this example, we’ll use the ~/Documents/ directory:

   cd ~/Documents

1. Create the React Native project by running the following command:

   react-native init MyApp

1. In the terminal app, change the location of the current working directory inside the newly created project:

   cd MyApp

Installing-the-ComPDFKit-Dependency

You can integrate the SDK in two ways:

• Through ComPDFKit GitHub repo:

In MyApp folder, install @compdfkit_pdf_sdk/react_native by calling:

  yarn add github:ComPDFKit/compdfkit-pdf-sdk-react-native

• Through ComPDFKit npm package:

In MyApp folder, install run the following commands:

  yarn add @compdfkit_pdf_sdk/react_native

Android

1. open android/app/src/main/AndroidManifest.xml , add Internet Permission and Storage Permission：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.compdfkit.flutter.example">

+    <uses-permission android:name="android.permission.INTERNET"/>

    <!-- Required to read and write documents from device storage -->
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

		<!-- Optional settings -->
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />

    <application
+    android:requestLegacyExternalStorage="true"
        ...>
	...
    </application>
</manifest>

1. Copy the sample pdf file to the assets directory

1. Replace App.js (or App.tsx) with what is shown for Usage-Example
2. Finally in the root project directory, run react-native run-android.

iOS

1. Open your project’s Podfile in a text editor:

open ios/Podfile

1. Add the following line to the target 'MyApp' do ... end block:

target 'MyApp' do
    # ...
+    pod "ComPDFKit", podspec:'https://www.compdf.com/download/ios/cocoapods/xcframeworks/compdfkit/2.1.1.podspec'
+  pod "ComPDFKit_Tools", podspec:'https://www.compdf.com/download/ios/cocoapods/xcframeworks/compdfkit_tools/2.1.1.podspec'
    # ...
end

Note: If SSL network requests fail to download the ComPDFKit library when you run pod install, you can use the following method instead.

target 'MyApp' do
    # ...
+  pod 'ComPDFKit', :git => 'https://github.com/ComPDFKit/compdfkit-pdf-sdk-ios-swift.git', :tag => '2.1.1'
+  pod 'ComPDFKit_Tools', :git => 'https://github.com/ComPDFKit/compdfkit-pdf-sdk-ios-swift.git', :tag => '2.1.1'
    # ...
end

1. In the ios folder, run pod install.
2. Open your project’s Workspace in Xcode:

   open ios/MyApp.xcworkspace

Make sure the deployment target is set to 10.0 or higher:

1. Add the PDF document you want to display to your application by dragging it into your project. On the dialog that’s displayed, select Finish to accept the default integration options. You can use "PDF_Document.pdf" as an example.

<key>NSCameraUsageDescription</key>
<string>Your consent is required before you could access the function.</string>

<key>NSMicrophoneUsageDescription</key>
<string>Your consent is required before you could access the function.</string>

<key>NSPhotoLibraryAddUsageDescription</key>
<string>Your consent is required before you could access the function.</string>

<key>NSPhotoLibraryUsageDescription</key>
<string>Your consent is required before you could access the function.</string>

<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>

1. Replace App.js (or App.tsx) with what is shown for Usage-Example
2. Finally in the root project directory, run react-native run-ios.

Apply the License Key

Contact ComPDFKit's sales team to get a free 30-day license to test the project, and apply the license key following the guides.

ComPDFKit for React Native is a commercial SDK, which requires a license to grant developer permission to release their apps. Each license is only valid for one bundle ID or applicationId in development mode. Other flexible licensing options are also supported, please contact our marketing team to know more.

Usage-Example

After installing from NPM or GitHub, replace App.tsx with the following code.

Make sure to follow the above steps to copy the sample document into your Android or iOS project.

The example includes a usage demonstration of selecting a PDF document from local file storage, which requires the use of the react-native-document-picker package. You can add this package as follows or remove the pickPDFFile function code from the example:

npm i react-native-document-picker

Here is the sample code for App.tsx:

/**
 * Copyright © 2014-2024 PDF Technologies, Inc. All Rights Reserved.
 *
 * THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
 * AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
 * UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
 * This notice may not be removed from this file.
 */

 import React, { Component } from 'react';
 // import DocumentPicker from 'react-native-document-picker'
 import {
   StyleSheet,
   Text,
   View,
   TouchableOpacity,
   SafeAreaView
 } from 'react-native';
 import { ComPDFKit } from '@compdfkit_pdf_sdk/react_native';
 import { Platform } from 'react-native';

 type Props = {};

 export default class App extends Component<Props> {

   state = {
     versionCode: ''
   }

   constructor(props: Props) {
     super(props)
     this.initialize()
     this.getVersionCode()
   }

   async getVersionCode() {
     // Get the version code of ComPDFKit SDK
     var version = await ComPDFKit.getVersionCode()
     this.setState({
       versionCode: version
     })
   }

   async initialize() {
     // Online certification, Fill in your online license
     // Returns true if initialization is successful, otherwise returns false.
     var result = await ComPDFKit.initialize('compdfkit android license', 'compdfkit ios license')
     console.log("ComPDFKitRN", "initialize:", result)

     // Offline authentication, Fill in your offline license
     // var result;
     // if(Platform.OS == 'android') {
     //   result = await ComPDFKit.init_('your compdfkit license')
     // } else {
     //   result = await ComPDFKit.init_('your compdfkit license')
     // }
     // console.log("ComPDFKitRN", "init_:", result)
   }

   /**
    * Open the sample document embedded in Android or iOS project.
    */
   openSample(){
     var samplePDF: string = Platform.OS == 'android' ? 'file:///android_asset/PDF_Document.pdf' : 'PDF_Document.pdf'
     // We provide default UI and PDF property related configurations here, you can modify configuration options according to your needs.
     var config = ComPDFKit.getDefaultConfig({

     })
     ComPDFKit.openDocument(samplePDF, '', config)
   }

   /**
    * Pick a PDF file from the local storage of Android or iOS device, this example uses the `react-native-document-picker` package,
    * If you want to use this example, please add this package to your project first.
    * {@link https://www.npmjs.com/package/react-native-document-picker}
    *
    */
   pickPDFFile(){
     try {
//       const pickerResult = DocumentPicker.pick({
//         type: [DocumentPicker.types.pdf]
//       });
//       pickerResult.then(res => {
//         ComPDFKit.openDocument(res[0]?.uri as string, '', ComPDFKit.getDefaultConfig({}))
//       })
     } catch (err) {
     }
   }

   render() {
     return (
       <SafeAreaView style={{ flex: 1 }}>
         <View style={styles.scaffold}>
           <View style={styles.appBar}>
             <Text style={styles.mediumTitle}>
               ComPDFKit PDF SDK for ReactNative
             </Text>
           </View>
           <View style={styles.container}>
             <TouchableOpacity onPress={() => {
               this.openSample()
             }}>
               <View style={styles.funItem}>
                 <Text style={{ fontWeight: 'bold' }}>{'Open Sample'}</Text>
               </View>
             </TouchableOpacity>

             <View style={styles.dividingLine} />

             <TouchableOpacity onPress={() => {
               this.pickPDFFile()
             }}>
               <View style={styles.funItem}>
                 <Text style={{ fontWeight: 'bold' }}>{'Pick Document'}</Text>
               </View>
               <View style={styles.dividingLine} />

             </TouchableOpacity>

             <View style={styles.buttom}>
               <Text style={styles.body2}>ComPDFKit for {Platform.OS == 'android' ? 'Android' : 'iOS'} {this.state.versionCode}</Text>
             </View>
           </View>
         </View>
       </SafeAreaView>

     );
   }
 }

 const styles = StyleSheet.create({
   appBar: {
     height: 56,
     backgroundColor: '#FAFCFF',
     elevation: 4,
     flexDirection: "row",
     justifyContent: "space-between",
     alignItems: "center",
     padding: 16
   },
   mediumTitle: {
     fontSize: 16,
   },
   body2: {
     textAlign: 'center',
     fontSize: 12
   },
   scaffold: {
     flex: 1,
   },
   container: {
     marginHorizontal: 16,
     marginVertical: 8,
     flex: 1,
     // backgroundColor: '#F5FCFF',
   },
   funItem: {
     height: 56,
     justifyContent: 'center',
     textAlign: 'center'
   },
   dividingLine: {
     height: 0.5, backgroundColor: '#4D333333', width: '100%'
   },
   buttom: {
     flex: 1,
     justifyContent: 'flex-end',
   }
 });

• (Android) For local storage file path:

document = 'file:///storage/emulated/0/Download/sample.pdf'

• (Android) For content Uri:

document = 'content://...'

• (Android) For assets path:

document = "file:///android_asset/..."

• (iOS) For app bundle file path:

document = "document.pdf"

• (iOS) for URL path:

document = "file://xxxx/document.pdf"

Configuration

When rendering a PDF view using the ComPDFKit.openDocument method, you have the flexibility to enable or disable certain features or adjust default attribute values for PDF annotations, forms, and more through the CPDFConfiguration settings.

For your convenience, you can obtain default attribute values by using the ComPDFKit.getDefaultConfig({}) method.

The following example demonstrates the configuration settings for some aspects. For more detailed configuration options, refer to CONFIGURATION for further information.

1. Set the initial display mode and the list of available modes. The following code shows enabling only the viewer mode and annotations mode:

import { ComPDFKit, CPDFViewMode } from '@compdfkit_pdf_sdk/react_native';

var config = ComPDFKit.getDefaultConfig({
  modeConfig:{
    initialViewMode: CPDFViewMode.VIEWER,
    availableViewModes: [
      CPDFViewMode.VIEWER,
      CPDFViewMode.ANNOTATIONS
    ]
  }
})
ComPDFKit.openDocument(samplePDF, '', config)

1. Set the list of enabled annotation types and default annotation attribute values. For example, enable only highlight annotations and set the color and transparency for highlight annotations:

import { ComPDFKit, CPDFAnnotationType, CPDFConfigTool } from '@compdfkit_pdf_sdk/react_native';

var config = ComPDFKit.getDefaultConfig({
  annotationsConfig: {
    availableType: [
      CPDFAnnotationType.NOTE
    ],
    availableTools: [
      CPDFConfigTool.SETTING,
      CPDFConfigTool.UNDO,
      CPDFConfigTool.REDO,
    ],
    initAttribute: {
      note: {
        color: '#1460F3',
        alpha: 255
      }
    }
  }
})
ComPDFKit.openDocument(samplePDF, '', config)

1. Set the display mode and page flipping direction:

import { ComPDFKit, CPDFDisplayMode } from '@compdfkit_pdf_sdk/react_native';

var config = ComPDFKit.getDefaultConfig({
  readerViewConfig: {
    displayMode: CPDFDisplayMode.DOUBLE_PAGE,
    verticalMode: false
  }
})
ComPDFKit.openDocument(samplePDF, '', config)

API

APIs are available on the API

Support

ComPDFKit has a professional R&D team that produces comprehensive technical documentation and guides to help developers. Also, you can get an immediate response when reporting your problems to our support team.

• For detailed information, please visit our Guides page.
• Stay updated with the latest improvements through our Changelog.
• For technical assistance, please reach out to our Technical Support.
• To get more details and an accurate quote, please contact our Sales Team.

Note

We are glad to announce that you can register a ComPDFKit API account for a free trial to process 1000 documents per month for free.

Thanks,

The ComPDFKit Team