pspdfkit_flutter 3.0.1

A Flutter plugin providing a feature-rich PDF viewing and editing experience to your users with the powerful PSPDFKit PDF SDK.

PSPDFKit Flutter

PSPDFKit for Flutter is available at pub.dev and GitHub.

If you are new to Flutter, make sure to check our Flutter blog posts:

• How I Got Started With Flutter.
• Getting Started with PSPDFKit Flutter.
• Opening a PDF in Flutter.
• How to Bridge Native iOS Code to Flutter.
• How to Customize Our Flutter PDF SDK for Android.
• Advances in Hybrid Technologies.
• How We Maintain Our Public Flutter Project Using a Private Monorepo.

For our quick-start guides, check out our website.

Platform specific README exists for Android and iOS.

Setup

Integration into a New Flutter App

Android

Requirements

• The latest stable version of Flutter
• The latest stable version of Android Studio
• The Android NDK
• An Android Virtual Device or a hardware device

Getting Started

1. Create a Flutter project called pspdfkit_demo with the flutter CLI:

   flutter create --org com.example.pspdfkit_demo pspdfkit_demo
   

2. In the terminal app, change the location of the current working directory to your project:

   cd pspdfkit_demo
   

3. Open the project’s Gradle build file, android/build.gradle:

   open android/build.gradle
   

4. Modify the Kotlin version inside the buildscript section:

    buildscript {
   -    ext.kotlin_version = '1.3.50'
   +    ext.kotlin_version = '1.5.31'
        repositories {
            google()
            mavenCentral()
        }
    ...
   

5. Open the app’s Gradle build file, android/app/build.gradle:

   open android/app/build.gradle
   

6. Modify the minimum SDK version, and enable multidex. All this is done inside the android section:

    android {
        defaultConfig {
   -        minSdkVersion 16
   +        minSdkVersion 21
            ...
   +        multiDexEnabled true
        }
    }
   

7. Open pubspec.yaml:

   open pubspec.yaml
   

8. Add the PSPDFKit dependency in pubspec.yaml:

    dependencies:
      flutter:
        sdk: flutter
   +  pspdfkit_flutter: any
   

9. From the terminal app, run the following command to get all the packages:

   flutter pub get
   

10. Then run the command below to upgrade the dependencies:

    flutter pub upgrade
    

11. Open lib/main.dart and replace the entire content with the contents of demo_project_main.dart.txt. This simple example will load a PDF document from local device filesystem.

12. Add the PDF document you want to display in your project’s assets directory.

    • First create a PDFs directory:

      mkdir PDFs
      

    • Move a sample document into the newly created PDFs directory, and rename it as Document.pdf:

      cp ~/Downloads/PSPDFKit.pdf PDFs/Document.pdf
      

13. Specify the assets directory in pubspec.yaml:

     # The following section is specific to Flutter.
     flutter:
    +  assets:
    +    - PDFs/
     ...
    

14. Start your Android emulator, or connect a device.

15. Run the app with:

    flutter run
    

iOS

Requirements

• The latest stable version of Flutter
• The latest stable version of Xcode
• The latest stable version of CocoaPods

Getting Started

1. Create a Flutter project called pspdfkit_demo with the flutter CLI:

   flutter create --org com.example.pspdfkit_demo pspdfkit_demo
   

2. In the terminal app, change the location of the current working directory to your project:

   cd pspdfkit_demo
   

3. Open Runner.xcworkspace from the ios folder in Xcode:

   open ios/Runner.xcworkspace
   

4. Make sure the iOS Deployment Target is set to 13.0 or higher.

   

5. Change "View controller-based status bar appearance" to YES in Info.plist.

   

6. Add the PSPDFKit dependency in pubspec.yaml:

    dependencies:
      flutter:
        sdk: flutter
   +  pspdfkit_flutter:
   

7. From the terminal app, run the following command to get all the packages:

   flutter pub get
   

8. Then run the command below to upgrade the dependencies:

   flutter pub upgrade
   

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

   open ios/Podfile
   

10. Update the platform to iOS 13 and add the PSPDFKit Podspec:

    -# platform :ios, '9.0'
    + platform :ios, '13.0'
     ...
     target 'Runner' do
       use_frameworks!
       use_modular_headers!`
           
       flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
    +  pod 'PSPDFKit', podspec:'https://customers.pspdfkit.com/pspdfkit-ios/latest.podspec'
     end
    

11. Open lib/main.dart and replace the entire content with the contents of demo_project_main.dart.txt. This simple example will load a PDF document from local device filesystem.

12. Add the PDF document you want to display in your project’s assets directory.

    • First create a PDFs directory:

      mkdir PDFs
      

    • Move a sample document into the newly created PDFs directory, and rename it as Document.pdf:

      cp ~/Downloads/PSPDFKit.pdf PDFs/Document.pdf
      

13. Specify the assets directory in pubspec.yaml:

     # The following section is specific to Flutter.
     flutter:
    +  assets:
    +    - PDFs/
     ...
    

14. Run flutter emulators --launch apple_ios_simulator to launch the iOS Simulator.

15. Run the app with:

    flutter run
    

Example App

To see PSPDFKit Flutter in action check out our Flutter example app.

Showing a PDF document inside your Flutter app is as simple as this:

```dart
Pspdfkit.present('file:///path/to/Document.pdf');
```

Upgrading to a Full PSPDFKit License Key

PSPDFKit is a commercial product and requires the purchase of a license key when used in production. By default, this library will initialize in demo mode, placing a watermark on each PDF and limiting usage to 60 minutes.

To purchase a license for production use, please reach out to us via https://pspdfkit.com/sales/form/.

To initialize PSPDFKit using a license key, call either of the following before using any other PSPDFKit APIs or features:

To set the license key for both Android and iOS, use:

await Pspdfkit.setLicenseKeys("YOUR_FLUTTER_ANDROID_LICENSE_KEY_GOES_HERE", "YOUR_FLUTTER_IOS_LICENSE_KEY_GOES_HERE");

To set the license key for the currently running platform, use:

await Pspdfkit.setLicenseKey("YOUR_FLUTTER_LICENSE_KEY_GOES_HERE");

Migrating from Version 1.10.3

Q: I updated the Flutter library and I am getting the following error:

lib/main.dart:8:8: Error: Error when reading '../../.pub-cache/git/pspdfkit-flutter-b6241555b1ee3e816a0dce65145991c1a4477d94/lib/pspdfkit.dart': No such file or directory
import 'package:pspdfkit_flutter/pspdfkit.dart';
       ^
lib/main.dart:37:7: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
      Pspdfkit.present(tempDocumentPath);
      ^^^^^^^^
lib/main.dart:58:32: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
      frameworkVersion = await Pspdfkit.frameworkVersion;
                               ^^^^^^^^
lib/main.dart:73:5: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
    Pspdfkit.setLicenseKey("YOUR_LICENSE_KEY_GOES_HERE");
    ^^^^^^^^


FAILURE: Build failed with an exception.

A: If you were using version 1.10.3 or earlier, you will need to update the imports in your Dart files like so:

-import 'package:pspdfkit_flutter/pspdfkit.dart';
+import 'package:pspdfkit_flutter/src/main.dart';

Troubleshooting

Flutter Updates

To update Flutter to the latest version, all you have to do is run flutter upgrade.

Flutter Configuration Problems

Among the tools provided by Flutter, there is flutter doctor, a very handy program that checks your system configuration for you and provides step-by-step actions to take in case of problems.

The verbose mode of flutter doctor is even more helpful; it prints out extensive information about the nature of an issue and how to fix it. To run the verbose mode, all you have to do is type flutter doctor -d.

CocoaPods Conflicts With Asdf

If asdf is installed in your machine it might create problems when running Cocoapods, and Flutter will erroneously suggest to install CocoaPods via brew with brew install cocoapods. This won't work because for this specific configuration CocoaPods needs to be installed via RubyGems. To fix this configuration issue just type gem install cocoapods && pod setup.