The _onItemTapped() callback is assigned to onTap of BottomNavigationBar, which returns the index when the item is tapped. _selectedIndex is given to the currentIndex property. The _selectedIndex variable holds the value of the currently selected item. To show the selection of other items, we’ll use two properties: onTap and currentIndex. It does not change the selection yet as we click on the other items:
Buttonbar flutter code#
The above code just displays the BottomNavigationBar with the first item selected as the default. BottomNavigationBarItem is simply used to show the actual item inside BottomNavigationBar. items accept a widget of a type BottomNavigationBarItem. Title: const Text('BottomNavigationBar Demo'),īottomNavigationBar: BottomNavigationBar(īottomNavigationBar has a required property called items. The BottomNavigationBar widget is given to the bottomNavigationBarproperty of Scaffold: Scaffold( The finished product will look as follows: Now let’s walk through the process of creating a simple BottomNavigationBar step by step. BottomNavigationBar allows you to select one item at a time and quickly navigate to a given page.
Usually, it’s used to show around three to five items.
Buttonbar flutter how to#
In this tutorial, we’ll tell you everything you need to know about BottomNavigationBar in Flutter. In Flutter apps, the BottomNavigationBar widget enables users to see any one category as the app starts and quickly look at the others with just the tap of a finger. The Google Play Store app, for example, presents its content in categories such as games, apps, movies, and books. Mobile applications often have various categories of content to offer. How to build a bottom navigation bar in Flutter Over the last seven-plus years, I've been developing and leading various mobile apps in different areas. Pinkesh Darji Follow I love to solve problems using technology that improves users' lives on a major scale.
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