custom_navigation_bar

A custom navigation bar with bubble click effect.

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:

Gallery

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.	grey`600`
`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...