Скачать или смотреть Solving the Bottom overflowed by 98 pixel Error in Flutter

Encountering the `Bottom overflowed by 98 pixel` error in Flutter can be frustrating, especially when your app's UI isn't scrollable. This guide provides you with effective solutions to this common issue.
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This video is based on the question https://stackoverflow.com/q/70981732/ asked by the user 'Manoj Tolagekar' ( https://stackoverflow.com/u/17808039/ ) and on the answer https://stackoverflow.com/a/70981817/ provided by the user 'Sumed' ( https://stackoverflow.com/u/16438572/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Bottom Overflowed by 98 Pixel Error in Flutter

As a new developer in the Flutter ecosystem, you might come across multiple layout issues. One such common issue is the infamous Bottom overflowed by 98 pixel error. This message may seem perplexing at first, but it's a signal that something in your widget tree is leading to an overflow, particularly at the bottom of your screen.

This often happens when you have a list that extends beyond the available space on the device screen, such as when you’re creating a left-side navigation drawer with multiple list items. The default layout doesn't gracefully manage this overflow and hence throws an error, preventing your app from functioning correctly.

In this guide, we’ll explore how to resolve this issue to make your UI scrollable!

Causes of the Error

The Bottom overflowed by 98 pixel error occurs for a few reasons. Primarily, it can happen when:

A Column widget contains too many children that exceed the height of its parent.

You have a static height for your parent widget that cannot accommodate all child widgets.

To illustrate, let's consider the provided code snippet where you are using a Column inside a Drawer with multiple ListTile entries. When the number of ListTile entries exceeds the screen height, the overflow error occurs.

Fixing the Overflow Issue

Option 1: Use SingleChildScrollView

One solution to fix the overflow issue is to wrap your Column in a SingleChildScrollView. This allows the content to be scrollable if it exceeds the screen size.

Here is how you can implement it:

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

By wrapping your Column with SingleChildScrollView, the user can scroll through all entries in your drawer without encountering overflow errors.

Option 2: Use ListView

Another effective alternative is to utilize a ListView instead of a Column. The ListView automatically handles overflow and provides a scrolling mechanism for its children.

Here's how you can modify the code:

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

The ListView widget is designed to efficiently handle large numbers of children, ensuring that even if you have many items, they are displayed neatly and can be scrolled through seamlessly.

Conclusion

The Bottom overflowed by 98 pixel error is a common yet easily resolvable issue in Flutter development. By either using SingleChildScrollView or ListView, you ensure that your application's UI allows users to navigate through all items without any overflow concerns.

So next time you face this issue, remember these simple fixes, and keep building amazing Flutter applications! Happy coding!