Creating a Single Vertical Scrollable List with Horizontal Scrollable Items in Flutter

Описание: Learn how to create a vertical scrollable list where each item consists of horizontally scrollable elements in Flutter, without needing external packages.
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This video is based on the question https://stackoverflow.com/q/74630607/ asked by the user 'YGranja' ( https://stackoverflow.com/u/20601266/ ) and on the answer https://stackoverflow.com/a/74631217/ provided by the user 'Hassan Teslim' ( https://stackoverflow.com/u/13805437/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Creating a Single Vertical Scrollable List with Horizontal Scrollable Items in Flutter

In the world of mobile app development, organizing UI elements efficiently is crucial for enhancing the user experience. One common scenario developers encounter is the need for a vertical scrollable list where each item contains a horizontal scrollable list. If you're working with Flutter and wondering how to achieve this functionality, you’re in the right place. In this post, we’ll break down a solution that allows you to create a single vertical scrollable list where each item is a horizontal scrollable list, all without relying on external packages.

The Problem

You want to create a user interface that has:

A vertical list that can be scrolled up and down.

Each item in that vertical list is itself a horizontal list that can be scrolled left and right.

The vertical list should dynamically grow in height to accommodate all the content.

Each horizontal list should maintain a fixed height to keep your design consistent and organized.

The Solution

To implement this functionality in Flutter, you can use a combination of ListView, Column, and SingleChildScrollView. Let’s break it down step-by-step:

Step 1: Use a SizedBox for Fixed Height

First, you'll want to wrap each horizontal list in a SizedBox that gives it a fixed height. This ensures that each horizontal list does not overflow in size, keeping your layout tidy. The ListView widget will allow you to scroll horizontally by setting its scrollDirection to Axis.horizontal.

Step 2: Combine with a Column and SingleChildScrollView

You can then place multiple SizedBox widgets inside a Column, which will let you stack each horizontal list vertically. To allow the entire column to be scrollable vertically, wrap it in a SingleChildScrollView.

Example Code

Here’s an example implementation based on the above steps:

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

Breakdown of the Code

SingleChildScrollView: This widget allows you to scroll the entire column vertically.

Column: This widget stacks its children vertically.

SizedBox: Each horizontal list’s height is fixed, ensuring consistent layout across lists.

ListView: Each horizontal scrollable list is created here. Setting the scrollDirection to Axis.horizontal enables horizontal scrolling.

MyWidget1, MyWidget2, MyWidget3: Replace these with your actual widgets that need to be displayed in the horizontal lists.

Conclusion

Implementing a single vertical scrollable list with horizontal scrollable items in Flutter is straightforward when you combine the right widgets. Using a SingleChildScrollView with a Column and SizedBox allows you to create a flexible and organized UI without the need for any external packages. Now you can enhance your apps with this dynamic user interface challenge effectively!

Happy coding!