Скачать или смотреть Creating a Container in Flutter That Stays Constant Across Tabs

Learn how to create a `permanent container` in Flutter that remains unchanged when switching between tabs. Discover easy steps to implement this in your TabBar layout.
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This video is based on the question https://stackoverflow.com/q/69131684/ asked by the user 'Angelina Petzold' ( https://stackoverflow.com/u/16868644/ ) and on the answer https://stackoverflow.com/a/69135059/ provided by the user 'BambinoUA' ( https://stackoverflow.com/u/1798328/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Keeping a Container Consistent in Flutter's TabBar

When working with Flutter, it’s common to encounter situations where you want specific elements to stay constant across different tabs in your TabBar. Many developers face the challenge of ensuring certain widgets — like a specific container — remain visible regardless of the tab that is currently active. In this post, we’ll tackle how to achieve that seamless user experience using a straightforward approach.

The Problem: Maintaining a Constant Container

Imagine you are developing a mobile application that utilizes a TabBar with multiple tabs. You want a particular container (let's call it a ‘permanent widget’) to be visible at all times, while the content in other parts of the layout can change based on the active tab. This creates a distraction-free environment for the user, making it easy to navigate without losing context. But how can we implement this effectively?

The Solution: Using Separate Widgets

To create a layout where one container remains constant while others change, you can break down your UI into separate widgets. The main idea is to include the permanent widget in each tab individually. Here is how to do it step-by-step:

Step 1: Create Your Permanent Widget

Start by creating a widget for the container that you want to remain constant across all tabs. This widget will house whatever content you want to display consistently.

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Step 2: Create Modifiable Widgets for Each Tab

Next, create different widgets for the content of each tab. These will be the sections that change based on user interactions.

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Step 3: Implement the TabBar with Permanent Widget

Now that you have your widgets, it’s time to implement them into your TabBar layout. Here’s a simplified example that demonstrates how each tab will include the permanent widget while allowing the other content to change.

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Conclusion

By breaking down your TabBar structure into reusable components, you can easily create a user interface where certain widgets—like containers—remain unchanged, regardless of which tab is currently active. This method not only enhances user experience by providing consistency but also keeps your code organized and maintainable.

Feel free to adjust the content of both your permanent and modifiable widgets to suit your application’s needs. Happy coding in Flutter!