How to Use highlightColor in Flutter’s GestureDetector

Описание: Learn how to effectively use the `highlightColor` feature in Flutter by converting a `GestureDetector` to an `InkWell` for a responsive user interface.
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This video is based on the question https://stackoverflow.com/q/62289116/ asked by the user 'Mahmoud Al-Haroon' ( https://stackoverflow.com/u/6317695/ ) and on the answer https://stackoverflow.com/a/62289386/ provided by the user 'Alex Collette' ( https://stackoverflow.com/u/7138284/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Use highlightColor in Flutter’s GestureDetector

Creating an engaging user interface is crucial in Flutter development. One common requirement is to provide visual feedback when a button is clicked, similar to the behavior seen with the FlatButton widget, which supports a highlightColor.

However, if you are currently using a GestureDetector, you might be asking yourself: How can I achieve the same effect? In this guide, we’ll explore how to highlight colors when clicking on a GestureDetector by converting it to an InkWell widget.

Understanding the Problem

You may have implemented a button using a GestureDetector, which allows you to handle different types of gestures. Your existing code might look like this:

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

You also have a custom animated button UI defined as follows:

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

While this setup captures gestures well, it lacks the visual feedback users expect when they press a button. Unfortunately, the GestureDetector does not provide a direct way to handle highlightColor.

The Solution: Using InkWell

To achieve the desired visual highlight effect, you can utilize the InkWell widget instead of GestureDetector. InkWell offers built-in support for highlight and splash effects that you can easily customize.

Step-by-Step Implementation

Here’s how you can integrate InkWell into your animated button UI:

Replace GestureDetector with InkWell:
This allows you to use properties like highlightColor directly.

Define the InkWell Properties:
You can define the onTap and highlightColor properties according to your requirements.

Here’s how the modified widget would look:

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

Key Changes Explained

Material Widget: Wrapping the InkWell in a Material widget ensures that the colors and effects are rendered correctly.

Highlight Color: You can now set the highlightColor to whatever color fits your design, giving users the instant feedback they expect.

Conclusion

By switching to the InkWell widget, you can effectively implement the highlightColor feature in your Flutter application. This approach not only improves the visual aesthetics of your buttons but also enhances user experience.

Try this simple modification in your code, and watch your buttons come to life with interactive feedback!