Run Project

1. Open lib/main.dart and replace the entire content with the following code. And fill in the license provided to you in the ComPDFKit.init method.

There are 2 different ways to use ComPDFKit Flutter API:

• Present a document via a plugin.
• Show a ComPDFKit document view via a Widget.

Usage Plugin

Open lib/main.dart,replace the entire file with the following:

import 'dart:io';

import 'package:compdfkit_flutter/compdfkit.dart';
import 'package:compdfkit_flutter/configuration/cpdf_configuration.dart';
import 'package:compdfkit_flutter/util/cpdf_file_util.dart';
import 'package:flutter/material.dart';

const String _documentPath = 'pdfs/PDF_Document.pdf';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
    _init();
  }

  void _init() async {
    File licenseFile = await CPDFFileUtil.extractAsset(context, 'assets/license_key_flutter.xml');
    ComPDFKit.initWithPath(licenseFile.path);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          child: Center(
            child: ElevatedButton(
              onPressed: () async {
                showDocument(context);
              },
              child: const Text(
                'Open Document',
              )),
          ))),
    );
  }

  void showDocument(BuildContext context) async {
    var pdfFile = await CPDFFileUtil.extractAsset(_documentPath);
    var configuration = CPDFConfiguration();
    // Present a document via a plugin.
    ComPDFKit.openDocument(pdfFile.path,
                           password: '', configuration: configuration);
  }
}

Usage Widget

Open lib/main.dart,replace the entire file with the following:

import 'dart:io';

import 'package:compdfkit_flutter/compdfkit.dart';
import 'package:compdfkit_flutter/configuration/cpdf_configuration.dart';
import 'package:compdfkit_flutter/widgets/cpdf_reader_widget.dart';
import 'package:compdfkit_flutter/util/cpdf_file_util.dart';
import 'package:flutter/material.dart';

const String _documentPath = 'pdfs/PDF_Document.pdf';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String? _document;

  @override
  void initState() {
    super.initState();
    _init();
    _getDocumentPath().then((value) {
      setState(() {
        _document = value;
      });
    });
  }

  void _init() async {
    /// Please replace it with your ComPDFKit license
    File licenseFile = await CPDFFileUtil.extractAsset(context, 'assets/license_key_flutter.xml');
    ComPDFKit.initWithPath(licenseFile.path);
  }

  Future<String> _getDocumentPath() async {
    var file = await CPDFFileUtil.extractAsset('pdfs/PDF_Document.pdf');
    return file.path;
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        resizeToAvoidBottomInset: false,
        appBar: AppBar(
          title: const Text('CPDFReaderWidget Example'),
        ),
        body: _document == null
        ? Container()
        : CPDFReaderWidget(
          document: _document!,
          configuration: CPDFConfiguration(),
          onCreated: (_create) => {})));
  }
}

2. Add the PDF documents you want to display in the project

• create a pdf directory

  mkdir pdfs

• Copy your example document into the newly created pdfs directory and name it PDF_Document.pdf

3. Specify the assets directory in pubspec.yaml

 flutter:
+  assets:
+    - pdfs/

4. Launch your Android, iOS emulator, or connect your device.

flutter emulators --launch apple_ios_simulator

5. Run the app with:

flutter run