自定義氣泡導航欄

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
brightness	Brightness	describes the contrast of a theme or color palette. If you want adaptive system display setting like iOS dark mode , you should set Brightness.dark or Brightness.light . if this attribute be set , other attributes with "*Color" (like selectedColor) will not take effect , should use lightThemeData or darkThemeData	null
lightThemeData	CustomNavigationBarThemeData	when brightnessis light,you can custom the light theme color if you want it	null
darkThemeData	CustomNavigationBarThemeData	when brightnessis dark,you can custom the dark theme color if you want it	null

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...