custom_navigation_bar

A custom navigation bar with bubble click effect.

pub package License: MIT Star on Github Star on Github

Overview

This project is inspired by this post from Dribbble and The Boring Flutter Development Show, Ep. 35

This package gives you a cute bubble effect when you click on the navigation bar.

Dribbble:

Implemented:

How to install

Add this to your package's pubspec.yaml file:

dependencies:
  custom_navigation_bar: lastest version

Documentation

Attention

If you update from version under 0.6.0, there are some breaking changes in the version 0.6.0. The icon in CustomNavigationBarItem has changed from IconData to Widget.

old version

CustomNavigationBarItem(
      {@required this.icon,
      IconData selectedIcon,
      this.selectedTitle,
      this.unSelectedTitle,
      this.badgeCount = 0,
      this.showBadge = true})
      : selectedIcon = selectedIcon ?? icon;

  ///
  /// The icon of the item
  /// Typically the icon is an [Icon].
  ///
  final IconData icon;

new version

CustomNavigationBarItem(
      {@required this.icon,
      Widget selectedIcon,
      this.title,
      Text selectedTitle,
      this.badgeCount = 0,
      this.showBadge = false})
      : selectedIcon = selectedIcon ?? icon,
        selectedTitle = selectedTitle ?? title;

  ///
  /// The icon of the item
  /// Typically the icon is an [Icon].
  ///

  final Widget icon;      

You can customize these attributes in the navigation bar.

Attributes Type Description Default
scaleFactor double scale factor for the icon scale animation. 0.2
elevation double The z-coordinate of this CustomNavigationBar 8.0
items List item data in CustomNavigationBar required
selectedColor Color Color when CustomNavigationBarItem is selected blueAccent
unSelectedColor Color Color when CustomNavigationBarItem is not selected. grey600
onTap Function(int) callback function when item tapped null
currentIndex int current index of navigation bar. 0
iconSize double size of icon. also represent the max radius of bubble effect animation. 24.0
backgroundColor Color Background color of CustomNavigationBar Colors.white
strokeColor Color stroke color blueAccent
bubbleCurve Curve animation curve of bubble effect linear
scaleCurve Curve animation curve of scale effect linear
borderRadius Radius border radius of navigation bar Radius.zero
isFloating bool control if CustomNavigationBar is floating false
blurEffect bool control if CustomNavigationBar show blur effect false
opacity double control CustomNavigationBar blur effect opacity when blurEffect is true 0.8

Attention: If you set isFloating to true, I would recommand you to set extendBody to true in Scaffold for a better performance.

And for customize icon in the navigation bar, just put the icons you want in the CustomNavigationBarItem like this.

CustomNavigationBar(
        ...
        items: [
          CustomNavigationBarItem(
          icon: Icon(Icons.home),
          title: Text("hello"),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.shopping_cart),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.lightbulb_outline),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.search),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.account_circle),
        ),
        ],
        ...
      )

If you want add notification badge, just use like this

CustomNavigationBar(
        ...
        items: [
        CustomNavigationBarItem(
          icon: Icon(Icons.home),
          badgeCount: _badgeCounts[0],
          showBadge: _badgeShows[0],
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.shopping_bag),
          badgeCount: _badgeCounts[1],
          showBadge: _badgeShows[1],
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.lightbulb_outline),
          badgeCount: _badgeCounts[2],
          showBadge: _badgeShows[2],
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.search),
          badgeCount: _badgeCounts[3],
          showBadge: _badgeShows[3],
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.account_circle),
          badgeCount: _badgeCounts[4],
          showBadge: _badgeShows[4],
        ),
      ],
        ...
      )

To clear a badge, set showBadge to false

If you want add title under icon, just use like this

CustomNavigationBar(
      iconSize: 30.0,
      selectedColor: Color(0xff040307),
      strokeColor: Color(0x30040307),
      unSelectedColor: Color(0xffacacac),
      backgroundColor: Colors.white,
      items: [
        CustomNavigationBarItem(
          icon: Icon(Icons.home),
          title: Text("Home"),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.shopping_cart),
          title: Text("Cart"),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.lightbulb_outline),
          title: Text("Explore"),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.search),
          title: Text("Search"),
        ),
        CustomNavigationBarItem(
          icon: Icon(Icons.account_circle),
          title: Text("Me"),
        ),
      ],
      currentIndex: _currentIndex,
      onTap: (index) {
        setState(() {
          _currentIndex = index;
        });
      },
    );

Example

Check example app for more details.

Contribute

Issues and pull requests are welcomed!!

Future Plans

  • x Code format
  • x Make it more like native navigation bar in Flutter.
  • x Better documentation
  • More customizations!! And more...