Flutter layout grid system update
1 ) Overview of Flutter Grid System
Flutter offers a GridView widget, which displays a scrollable, 2D array of widgets.
The grid’s main axis scroll direction can be customized.
Common grid layouts include GridView.count (fixed cross axis tiles) and GridView.extent (max tile extent).
Advanced custom layouts can be achieved with a SliverGridDelegate.
2 ) Creating Large or Infinite Grids
Use GridView.builder with SliverGridDelegateWithFixedCrossAxisCount or SliverGridDelegateWithMaxCrossAxisExtent for efficient large grids.
GridView.custom allows using a custom SliverChildDelegate for specialized layouts.
3 ) Relation to CustomScrollView and Slivers
GridView is essentially a CustomScrollView with a single SliverGrid child.
For more complex scenarios (combining lists, grids, app bars), transitioning to CustomScrollView with multiple slivers is straightforward.
Properties like scrollDirection, controller, and padding map directly between GridView and CustomScrollView components.
Transitioning enables combining SliverGrid with other slivers (SliverList, SliverAppBar).
4 ) Scroll Position Persistence
Scroll positions in GridView persist automatically during sessions using PageStorage.
This behavior can be disabled by setting ScrollController.keepScrollOffset to false.
When enabled, using PageStorageKey is recommended to differentiate multiple scroll views.
5 ) Examples Provided
GridView.count example demonstrates a 2 column grid with spacing and colored containers containing text.
Equivalent layout shown using CustomScrollView with SliverPadding and SliverGrid.count.
6 ) Advantages
Provides flexibility and performance for grid layouts.
Enables both simple and highly customized grid behaviors.
Simplifies complex layouts when combined with other sliver widgets.
This update highlights Flutter’s powerful and flexible grid layout system, emphasizing ease of use for simple grids and extensibility for complex UI needs through slivers.
https://justacademy.in/news-detail/building-pwas-with-flutter-in-2025
https://justacademy.in/news-detail/top-animation-packages-for-flutter
https://justacademy.in/news-detail/breaking-changes-in-latest-flutter-version
https://justacademy.in/news-detail/flutter-plugin-security-best-practices
https://justacademy.in/news-detail/ui-testing-in-flutter:-what's-new?
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