Converting Flutter Screens to Shareable PDFs: A Complete Guide

In this guide, we'll walk through how to integrate PDF generation and sharing functionality in your Flutter app using the pdf, path_provider, and share_plus packages. By the end of this article, you can generate, display, and share a PDF file right from your Flutter application.

Key Features of PDF Generation and Sharing

• Cross-Platform Support: Just like OneSignal, the libraries we’ll use support both Android and iOS, enabling you to use a single solution for both platforms.
• Simple Integration: Using the pdf and share_plus packages, Flutter developers can easily implement PDF generation and sharing functionality with minimal code.
• Rich PDF Content: Create PDFs that contain rich content like text, tables, and even images, making your application more interactive and engaging.

To get started, you need to add the necessary dependencies to your pubspec.yaml file. These plugins provide the foundation for PDF creation, accessing the file system, and sharing the generated files.

• pdf: This package provides tools for creating PDF files.
• path_provider: This plugin allows us to access directories on the device's file system.
• share_plus: This package enables the sharing of files with other apps, making it easy to send PDFs.

Step 1: Generating a PDF

First, let's write the method to generate a simple PDF. In this example, we'll create a PDF with text content such as an invoice or receipt.

• PDF Creation: We use the pdf package to create a document (pw.Document()) and add content (text, in this case) to it.
• File Storage: The generated PDF is stored in the temporary directory of the device using the path_provider plugin.
  

Step 2: Sharing the PDF

Once the PDF is generated, you can use the share_plus plugin to share the file with other applications, such as email or messaging apps. Here’s how to implement the sharing functionality:

3. Complete Integration: Generate and Share PDFs

Complete Code Example

main.dart

bill_page.dart

• PDF Generation: When the button is pressed, the app generates a PDF with sample content and saves it to the temporary directory.

PDF Sharing: Once the PDF is saved, the app allows users to share it with other apps (email, messaging, etc.) using the device’s native share sheet.

For a hands-on experience and to better understand the workflow, dive into the code. Feel free to explore the implementation via this GitHub repository.

By using the pdf, path_provider, and share_plus packages, you can easily implement this functionality and offer a complete solution for PDF generation and sharing in your Flutter projects.