Скачать или смотреть How to Change Button Colors When Clicked in Flutter

Learn how to change the colors of multiple buttons in your Flutter app when one is clicked, enhancing interactivity and user experience.
---
This video is based on the question https://stackoverflow.com/q/69289577/ asked by the user 'Pablo Loes' ( https://stackoverflow.com/u/16401747/ ) and on the answer https://stackoverflow.com/a/69289968/ provided by the user 'princesanjivy' ( https://stackoverflow.com/u/16907012/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: change button colors when it's clicked on Flutter

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Change Button Colors When Clicked in Flutter

Creating an interactive experience in your Flutter applications often involves changing the UI based on user actions. One common requirement is to modify the appearance of buttons when they are clicked. In this guide, we’ll explore how to change the colors of multiple buttons in Flutter when one of them is clicked. This feature not only enhances usability but also improves the overall user experience.

The Problem

Imagine you have a UI with 11 buttons, and when one of those buttons is clicked, you want the remaining 10 buttons to change their colors to grey. You might be thinking about how to efficiently manage the state of each button to achieve this effect.

The Solution

Here's how you can implement this functionality step by step using a Map to track the button states and a ListView.builder to create a dynamic list of buttons.

Step 1: Create a State Map

First, we need a way to manage the state of each button. We'll use a Map which will hold the button index as the key and a boolean value to indicate if it's been clicked.

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

Step 2: Build the Button List

Next, we’ll use a ListView.builder to create buttons. The itemBuilder will handle the onClick event and the logic to change button colors.

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

Explanation of the Code

State Management: The Map keeps track of whether each button is active (clicked) or inactive (not clicked).

Button Click Logic: When a button is clicked, its state becomes true, while the others reset to false.

Dynamic Styling: The ButtonStyle utilizes the button’s state to determine its background color — if it is clicked, it turns blue; otherwise, it stays grey.

Conclusion

With these steps, you can easily create a set of buttons in Flutter that interactively change colors based on user clicks. This approach not only provides a smooth and engaging user interface but also demonstrates the power of state management in Flutter applications.

By using a Map to manage button states and applying conditional styles in our widget tree, we maximize reactivity and enhance the overall user experience. Add this feature to your next Flutter project and see the difference it makes!

Feel free to leave your thoughts in the comments below or reach out with any questions regarding Flutter development!