Widgets are the basic building blocks of Flutter apps. A widget can be defined as a reusable piece of code that describes how the UI of your app looks like. The code structure of an app is a tree of widgets.
This article presents the top 12 Flutter widgets that every Flutter developer should know and use.
#1 Container
The Container is one of the most used Flutter widgets. It helps you compose, decorate, and position child widgets. Simply put, Container Widget is a parent widget that contains a child widget and manages its properties such as width, color, height, background, etc.
#2 RichText
RichText widget is a text formatting widget that allows you to display a paragraph in Flutter with different styles. It provides more control over formatting than the normal Text widget.
#3 SizedBox
Sized Box is a widget with a specific size that directs its child to also have that size.
#4 Wrap
The elements are placed on the screen on a grid of rows and columns. The Wrap widget is the same as the rows and columns grid, but with one difference/advantage – the Wrap widget knows how much space is available on the screen and adjusts the elements accordingly.
#5 Expanded Widget
This widget is useful when we want a child widget or children widgets to take all the available space along the main axis. The Expanded widget can be taken as the child of Row, Column, and Flex. If we don’t want to give equal spaces to our childer widgets, we can distribute the available space using the flex factor.
#6 Flexible
This widget helps your app be more responsive. What makes the Flexible widget different from the Expanded widget is the fact that Flexible takes only the needed space, and Expanded takes all the available space.
#7 Padding
We use the Padding widget when we want to add empty space around the child widget. If your widgets are colliding with each other, and you consider adding space around your widget is a good idea, give it a go with Padding.
#8 Scaffold
The Scaffold widget belongs to the group of structural Flutter widgets. It provides a framework that implements the basic Material Design visual layout structure of the Flutter app. It provides APIs for showing drawers, bottom sheets, and snack bars.
#9 SliverAppBar
SliverAppBar is a widget that allows you to give your app a fancy animated header that changes appearance as you scroll, or even disappears. SliverAppBar is used with CustomScrollView to provide custom scroll behavior for the app bar.
#10 List View
Have you ever had a set of items that you wanted to appear in a scrollable list? ListView is a widget that does just that. At its simplest, you give it a list of items, and it handles the rest.
#11 MediaQuery widget
Thanks to the MediaQuery widget, you can get specific information about the physical device your app is running on. This widget behaves similar to Cascading Style Sheets (CSS) media query in web development.
#12 FutureBuilder
When we are processing something in the app which requires a longer time to process, and we want to prevent our app from freezing before the particular process is completed, then we use a widget called FutureBuilder.
Conclusion
These were some of the most used widgets in Flutter. For more widgets, visit the Widget catalog, Flutter’s collection of structural, visual, interactive, and platform widgets.
The post 12 Core Widgets for Flutter App Development first appeared on CSForm.
The post 12 Core Widgets for Flutter App Development appeared first on CSForm.