Скачать или смотреть How to Make ListView.builder Fill the Entire Available Space in Flutter

Discover how to use `Expanded` with `ListView.builder` to ensure it fills all available screen space in your Flutter app.
---
This video is based on the question https://stackoverflow.com/q/75953949/ asked by the user 'Alexandr Gevorkyan' ( https://stackoverflow.com/u/16993625/ ) and on the answer https://stackoverflow.com/a/75955342/ provided by the user 'Harsh Sureja' ( https://stackoverflow.com/u/13973724/ ) 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: flutter: force listview.builder fill all free space

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.
---
Flutter: How to Make ListView.builder Fill All Free Space

Creating a user-friendly interface in your Flutter app often requires that list views dynamically adjust to available screen space. One common issue developers face is ensuring that a ListView.builder fills the entire available space without causing layout errors. In this guide, we'll explore a common scenario and provide a straightforward solution to this problem.

The Problem

When attempting to fill a ListView.builder in your Flutter app, you might run into an issue where it doesn't occupy all of the free space on the screen. This often leads to an unbalanced layout and an unsatisfactory user experience. As seen in one example, using a Column and SizedBox leads to a situation where the ListView.builder does not fill the whole screen and causes a height constraint error:

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

This situation can be frustrating, especially when you think you've structured your code correctly. Let's explore how we can resolve this.

The Solution: Using Expanded

To make sure your ListView.builder fills all the available space, the key is to utilize the Expanded widget effectively. The Expanded widget allows a child of a Column to expand and fill the remaining space in the parent widget.

Steps to Implement the Solution

Here’s how to modify your code to use Expanded instead of SizedBox:

Remove the SizedBox: Eliminate the SizedBox that you originally used to fill the available vertical space.

Wrap your ListView.builder with Expanded: This will make sure that the ListView takes up the free space.

Here’s the updated code:

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

Conclusion

By wrapping your ListView.builder in an Expanded widget, you allow it to dynamically occupy all the available vertical space on the screen, preventing the layout errors you might have encountered with the previous setup. This approach leads to a more flexible and aesthetically pleasing interface in your Flutter app.

Now you can explore building beautiful and efficient UIs using Flutter without worrying about layout issues in your list views! Happy coding!