How to Dynamically Remove Separator from ListView.separated in Flutter When Dismissing Widgets

Learn how to effectively manage separators in Flutter's ListView when dismissing widgets. We'll cover a practical example to ensure your application behaves as expected!
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Understanding the Problem

The Solution

We can resolve this issue by ensuring that the list of items and the list of separators are kept in sync. Below is a practical example demonstrating how to implement this solution.

Step-by-Step Implementation

Generate a List of Items: First, we create a list of items that we want to display in the ListView:

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

Create the Dismissing Logic: Inside the onDismissed callback of the Dismissible widget, we will remove the dismissed item from the list and update the UI accordingly:

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

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

Full Example Code

Here’s how the entire code might look:

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

Conclusion

With this knowledge, you will be able to enhance the functionality of your Flutter applications, making them intuitive and visually coherent.