bottom_nav_bar 1.0.1

An easy-to-use and clean bottom navigation bar.

BottomNavBar

An easy-to-use and clean bottom navigation bar.

Preview 1	Preview 1	Preview 1

Available Customization options

BottomNavBar

• iconSize - the item icon's size
• items - navigation items, item length should be from 3 to 5
• selectedIndex - the current item index. Use this to change the selected item. Defaults to zero
• onItemSelected - required to listen when an item is tapped it provides the selected item's index
• backgroundColor - the navigation bar's background color
• showElevation - if false the appBar's elevation will be removed
• mainAxisAlignment - use this property to change the horizontal alignment of the items. It is mostly used when you have ony two items and you want to center the items
• curve - param to customize the item change's animation
• containerHeight - changes the Navigation Bar's height
• containerPadding - changes the Navigation Bar's padding

BottomNavBarItem

• icon - the icon of this item
• title - the text that will appear next to the icon when this item is selected
• activeColor - the active item's icon and text color
• inactiveColor - the inactive item's icon color
• activeBackgroundColor - the active item's background color
• inactiveBackgroundColor - the inactive item's background color

Getting Started

Add the dependency in pubspec.yaml:

dependencies:
  ...
  bottom_nav_bar: ^1.0.0

Basic Widget

bottomNavigationBar: BottomNavBar(
        showElevation: true,
        selectedIndex: _currentIndex,
        onItemSelected: (index) {
          setState(() => _currentIndex = index);
        },
        items: <BottomNavBarItem>[
          BottomNavBarItem(
            title: 'Home',
            icon: const Icon(Icons.home),
            activeColor: Colors.white,
            inactiveColor: Colors.black,
            activeBackgroundColor: Colors.red.shade300,
          ),
          BottomNavBarItem(
            title: 'Profile',
            icon: const Icon(Icons.person),
            activeColor: Colors.white,
            inactiveColor: Colors.black,
            activeBackgroundColor: Colors.blue.shade300,
          ),
          BottomNavBarItem(
            title: 'Message',
            icon: const Icon(Icons.chat_bubble),
            inactiveColor: Colors.black,
            activeColor: Colors.white,
            activeBackgroundColor: Colors.green.shade300,
          ),
          BottomNavBarItem(
            title: 'Settings',
            icon: const Icon(Icons.settings),
            inactiveColor: Colors.black,
            activeColor: Colors.black,
            activeBackgroundColor: Colors.yellow.shade300,
          ),
        ],
      )

Full Example using IndexedStack

class RootPage extends StatefulWidget {
  const RootPage({Key? key}) : super(key: key);

  @override
  _RootPageState createState() => _RootPageState();
}

class _RootPageState extends State<RootPage> {
  int _currentIndex = 0;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _body(),
      bottomNavigationBar: _bottomNavBar(),
    );
  }

  Widget _body() => SizedBox.expand(
        child: IndexedStack(
          index: _currentIndex,
          children: const <Widget>[
            PageOne(),
            PageTwo(),
            PageThree(),
            PageFour(),
          ],
        ),
      );

  Widget _bottomNavBar() => BottomNavBar(
        showElevation: true,
        selectedIndex: _currentIndex,
        onItemSelected: (index) {
          setState(() => _currentIndex = index);
        },
        items: <BottomNavBarItem>[
          BottomNavBarItem(
            title: 'Home',
            icon: const Icon(Icons.home),
            activeColor: Colors.white,
            inactiveColor: Colors.black,
            activeBackgroundColor: Colors.red.shade300,
          ),
          BottomNavBarItem(
            title: 'Profile',
            icon: const Icon(Icons.person),
            activeColor: Colors.white,
            inactiveColor: Colors.black,
            activeBackgroundColor: Colors.blue.shade300,
          ),
          BottomNavBarItem(
            title: 'Message',
            icon: const Icon(Icons.chat_bubble),
            inactiveColor: Colors.black,
            activeColor: Colors.white,
            activeBackgroundColor: Colors.green.shade300,
          ),
          BottomNavBarItem(
            title: 'Settings',
            icon: const Icon(Icons.settings),
            inactiveColor: Colors.black,
            activeColor: Colors.black,
            activeBackgroundColor: Colors.yellow.shade300,
          ),
        ],
      );
}