Animate re build in SliverList when scroll... or i dont use it well
Tags: flutteranimation, softwaredevelopment
Published: 2023-08-16 13:07:10

Animate re-build in SliverList when scroll... or I don't use it well
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Have you ever experienced the frustration of trying to animate a rebuild in a `SliverList` while scrolling, only to end up scratching your head, wondering if you're doing something wrong? Well, fear not! You're not alone in this struggle, and this article aims to shed some light on the issue and help you overcome it.

Firstly, let's clarify what a `SliverList` is. In Flutter, a `SliverList` is a scrollable list that efficiently handles large amounts of data by only rendering the items that are currently visible on the screen. This optimization is achieved through the use of slivers, which are scrollable areas in a `CustomScrollView`.

Now, when it comes to animating the rebuild of items in a `SliverList` while scrolling, things can get a bit tricky. By default, Flutter doesn't provide an out-of-the-box solution for this specific use case. However, fear not, for there are workarounds that can help you achieve the desired effect!

One common approach is to use the `AnimatedList` widget, which provides built-in support for animating list item changes. By utilizing the `AnimatedList`, you can easily animate the addition, removal, or reordering of items in the list. This can be a great solution if you need more control over the animation process.

Another option is to use external packages, such as `flutter\_staggered\_animations`, which offer additional animation capabilities for `SliverList` and similar widgets. These packages provide various animation effects, such as fade-ins, slide-ins, or scale animations, to give your list a more dynamic and engaging user experience.

However, it's worth mentioning that using external packages might introduce additional complexity and dependencies to your project. So, make sure to evaluate the trade-offs and choose the solution that best fits your specific requirements.

Remember, in the world of software development, trial and error is often the name of the game. Don't be discouraged if your first attempt doesn't yield the desired results. Keep experimenting, tweaking, and learning from your mistakes. Eventually, you'll find the right approach that works for you!

So, the next time you find yourself struggling to animate a rebuild in a `SliverList` while scrolling, take a step back, breathe, and try out some of the techniques mentioned here. With a little bit of persistence and a touch of humor, you'll conquer this challenge and create stunning animated lists that will leave your users in awe!

### References:

*   [Flutter API Documentation - SliverList](https://api.flutter.dev/flutter/widgets/SliverList-class.html)
*   [Flutter API Documentation - AnimatedList](https://api.flutter.dev/flutter/widgets/AnimatedList-class.html)
*   [flutter\_staggered\_animations package](https://pub.dev/packages/flutter_staggered_animations)

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