Tutorial: How to Work with VCard API

Learning Objectives

In this tutorial, you’ll learn how to:

  • Create and manage contact information using the VCard API
  • Save VCard files to cloud storage and download them
  • Convert ContactDto objects to VCard format and vice versa
  • Extract contact information from business card images using AI recognition
  • Retrieve lists of VCard files from cloud storage

Prerequisites

Before starting this tutorial, you should have:

  • Completed the SDK Setup tutorial
  • Obtained your Client ID and Client Secret from the Aspose Cloud Dashboard
  • Basic understanding of contact management concepts
  • A development environment for your chosen programming language

What is VCard API?

The VCard API, part of Aspose.Email Cloud, allows you to work with contact card files (.vcf) programmatically. You can create, read, edit, and save contact information, as well as extract contact details from business card images using AI recognition technology.

Step 1: Create a Contact Object and Save it to Storage

Let’s start by creating a simple contact (ContactDto object) and saving it to cloud storage as a VCard (.vcf) file.

Try it yourself

Learning Checkpoint: What information did we include in our basic ContactDto object?

  • Gender, surname, and given name
  • Email address with category, display name, and preference settings
  • Phone number with category and preference settings

Step 2: Download VCard File From Storage

Once you’ve saved a VCard file to cloud storage, you might want to download it for local use or processing. Let’s retrieve that file from storage.

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Step 3: Get VCard File From Storage as ContactDto Object

Now, let’s retrieve a VCard file from storage and convert it to a ContactDto object for manipulation within your application.

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Learning Checkpoint: What can you do after retrieving a VCard as a ContactDto object?

  • Access and modify all contact information (name, email, phone, etc.)
  • Save changes back to storage with the same ContactSaveRequest
  • Use the contact information in your application logic

Step 4: Use Business Card Recognition API

One of the most powerful features of the VCard API is the ability to extract contact information from business card images using AI-powered recognition. Let’s see how to use this feature.

Try it yourself

For this example, you’ll need an image of a business card (PNG, JPG, etc.). The AI-based business card recognition will analyze the image and extract contact information.

Learning Checkpoint: What information can be extracted from a business card image?

  • Name (given name and surname)
  • Company information
  • Phone numbers with categories (work, mobile, etc.)
  • Email addresses with categories
  • Potentially more depending on what’s visible in the image

Step 5: Get a List of VCard Files From Storage

When working with multiple contacts, you may want to retrieve a list of all VCard files stored in a specific folder. The API provides a convenient method to do this with pagination support.

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Learning Checkpoint: What pagination parameters can be used when retrieving a list of VCard files?

  • itemsPerPage: The number of items to return per page
  • pageNumber: The page number to retrieve (starting from 0)

Troubleshooting Tips

If you encounter issues when working with the VCard API, here are some common problems and their solutions:

  1. File Not Found

    • Verify the storage name, folder path, and file name are correct
    • Check that you have the necessary permissions to access the file
  2. Invalid VCard Format

    • Ensure the VCard file adheres to the standard format
    • Try using a different file or creating a new one using the ContactDto object
  3. Business Card Recognition Issues

    • Ensure the image is clear and well-lit
    • Try using a higher resolution image
    • Make sure the business card is properly framed in the image
  4. API Authentication Errors

    • Verify your Client ID and Client Secret are correct
    • Check that your account subscription is active

What You’ve Learned

In this tutorial, you’ve learned how to:

  • Create ContactDto objects to represent contact information
  • Save VCard files to cloud storage and download them
  • Convert VCard files to ContactDto objects for manipulation
  • Extract contact information from business card images using AI recognition
  • Retrieve and paginate through lists of VCard files in storage

These skills enable you to build sophisticated contact management applications that can handle a variety of business scenarios, from manual contact creation to automated contact extraction from business cards.

Further Practice

To reinforce your learning, try these exercises:

  1. Create a ContactDto with additional fields like addresses, job titles, and websites
  2. Modify an existing VCard file and save it back to storage
  3. Implement pagination to navigate through a large collection of contacts
  4. Create a simple contact management application that uses the VCard API

Helpful Resources

Have questions about this tutorial? Feel free to reach out to us on the Aspose.Email Cloud forum.