How to Dynamically Call Theme Colors in Your Flutter Constructor

Learn how to adapt your container colors in Flutter according to the system theme using a constructor method.
---
This video is based on the question https://stackoverflow.com/q/71017391/ asked by the user 'Anurag Yadav' ( https://stackoverflow.com/u/18047728/ ) and on the answer https://stackoverflow.com/a/71017573/ provided by the user 'Md. Yeasin Sheikh' ( https://stackoverflow.com/u/10157127/ ) 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: How can i call theme colour in constructor

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 Dynamically Call Theme Colors in Your Flutter Constructor

When developing applications in Flutter, one common requirement is to adjust UI colors based on the system theme, providing a seamless user experience between light and dark modes. If you've found yourself with a static color in your constructor, you might be wondering how to make those colors dynamic and in line with the user's theme preferences.

In this guide, we will delve into how to effectively call and use theme colors in your constructors, ensuring your Flutter application looks great regardless of the theme selected.

Understanding the Problem

You might have a specific container in your Flutter app where the color is hardcoded. For example:

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

In this snippet, the color used for the container does not change with the system theme, which can lead to a less-than-ideal user experience. So, how can you improve this?

The Solution: Using a Function for Dynamic Colors

To adapt the container color based on the theme, you can create a method that retrieves the theme color dynamically. By doing this, you can ensure that the color used in your BoxDecoration matches the current theme. Follow these steps:

Step 1: Create a Method for BoxDecoration

You will need to define a method that accepts the BuildContext as a parameter. This way, you can leverage the Theme of the current context.

Here's how you can create this method:

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

Step 2: Use the Method in Your Widget

Now that you have defined the boxDecoration method, you can easily use it in your widget like so:

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

Benefits of This Approach

Flexibility: You can easily adapt the colors to any changes in the theme without additional manual adjustments.

Maintainability: By isolating your decoration logic in a function, your code remains cleaner and easier to maintain.

User Experience: Users benefit from a visually cohesive experience as your app responds to system theme changes.

Conclusion

Incorporating theme colors dynamically in your Flutter constructors is an effective way to enhance user experience. By following the steps outlined in this post, you can make your container colors adaptive, ensuring they match the app's current theme. This small adjustment can make a large difference in overall application aesthetics.

Now go ahead and implement this into your Flutter apps for better theming support!