How to Print API Response Key and Value in a DataTable Using Flutter

Learn how to display API response keys and values dynamically in a Flutter DataTable, with a complete code example! Get ready to enhance your Flutter skills.
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How to Print API Response Key and Value in a DataTable Using Flutter

When working with APIs in Flutter, a common requirement is to display the received data in a structured format. One effective way to visualize this data is through a DataTable. However, if you're unsure how to extract the keys and values from your API response and display them correctly, you’re in the right place! This guide will guide you through printing the API response keys in DataColumn and their corresponding values in DataRow.

Problem Introduction

You may find yourself needing to create tables in your Flutter apps that dynamically populate data from API responses. The goal here is clear:

Print the keys from an API response in the headers of the DataTable (DataColumn).

Print the respective values in the rows of the DataTable (DataRow).

Let’s consider that you have an API response like below:

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API Endpoint

For demonstration, we will use the following API endpoint:

[[See Video to Reveal this Text or Code Snippet]]

Solution Explanation

Setup Your Flutter Application

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The Complete Code Example

Here’s a complete implementation to achieve the desired functionality:

[[See Video to Reveal this Text or Code Snippet]]

Code Breakdown

State Management: Using StatefulWidget, we can manage our DataTable's state effectively.

Data Fetching: In the fetchAndPopulateData() method, we call the API and decode the JSON response.

Dynamic Columns & Rows Creation:

The populateColumnsAndRows() method loops through the decoded data to create columns from keys and rows from values.

We use Dart's map function to convert each value into a DataCell.

Run Your App

To see the results, run your Flutter application. You should be able to see a DataTable with the API's keys in the header and the values displayed beneath them.

Conclusion

Displaying data in a structured format is crucial for creating user-friendly applications. By utilizing Flutter's DataTable, you can achieve a clean and organized representation of your API data. With the provided code, you can expand or modify it to fit various API responses, improving data visualization in your Flutter apps.

Happy coding! If you have any questions or need further clarification, feel free to reach out.