flutter 带未读消息的底部导航

https://blog.csdn.net/liu__520/article/details/84138767

目录
**[flutter_bottom_tab_bar](https://github.com/LiuC520/flutter_bottom_tab_bar)**
items : ```List```
onTap : ```ValueChanged```
currentIndex : ```int```
type : ```BottomTabBarType ```
fixedColor : ```Color ```
iconSize : ```double```
[新增] isAnimation : ```bool```
[新增] badgeColor : ```Color```
[新增] isInkResponse : ```bool```
[新增] badge : ```Widget```
[新增] badgeNo : ```String```
How to Use?
flutter_bottom_tab_bar


bottom_tab_bar,
用法和bottom_navigation_bar一样,但是新增了一些属性的用法

items : List<BottomTabBarItem>
bottom navigation bar 里面的 icon and title.

onTap : ValueChanged<int>
回调,带的是tab的index
The callback that is called when a item is tapped.

The widget creating the bottom navigation bar needs to keep track of the current index and call setState to rebuild it with the newly provided index.

currentIndex : int
The index into [items] of the current active item.
当前激活的是哪一个tab

type : BottomTabBarType
Defines the layout and behavior of a [BottomTabBar].

See documentation for [BottomTabBarType] for information on the meaning of different types.

fixedColor : Color
The color of the selected item when bottom navigation bar is [BottomTabBarType.fixed].

If [fixedColor] is null then the theme’s primary color, [ThemeData.primaryColor], is used. However if [BottomTabBar.type] is [BottomTabBarType.shifting] then [fixedColor] is ignored.

iconSize : double
The size of all of the [BottomTabBarItem] icons.

See [BottomTabBarItem.icon] for more information.

[新增] isAnimation : bool
动画是否开启,默认是开起的

[新增] badgeColor : Color
未读消息的颜色,默认是fixedColor

[新增] isInkResponse : bool
按压水墨屏效果是否开启,默认是开启的,
还是带动画的,不太适合我们的正常项目

[新增] badge : Widget
未读消息,是一个widget,可以自定义样式

[新增] badgeNo : String
未读消息

How to Use?
first import dependeny in pubspec.yaml

first import dependeny in pubspec.yaml

dependencies:

  flutter:

    sdk: flutter

  bottom_tab_bar:

    git: https://github.com/LiuC520/flutter_bottom_tab_bar.git

example:

class HomeState extends State<Home> with SingleTickerProviderStateMixin {

  TabController _tabController;

  int _selectedIndex = 1;

  String badgeNo1;

  var titles = ['home', 'video', 'find', 'smallvideo', 'my'];

  var icons = [

    Icons.home,

    Icons.play_arrow,

    Icons.child_friendly,

    Icons.fiber_new,

    Icons.mic_none

  ];

  @override

  void initState() {

    super.initState();

    _tabController =

        new TabController(vsync: this, initialIndex: 1, length: titles.length);

    badgeNo1 = '12';

  }

  void _onItemSelected(int index) {

    setState(() {

      _selectedIndex = index;

      badgeNo1 = '';

    });

  }

  final _widgetOptions = [

    Text('Index 0: Home'),

    Text('Index 1: Video'),

    Text('Index 2: find someone'),

    Text('Index 3: small Video'),

    Text('Index 4: My'),

  ];

  @override

  Widget build(BuildContext context) {

    return Scaffold(

      appBar: AppBar(

        title: Text('Bottom Tab Bar'),

        actions: <Widget>[new Icon(Icons.photo_camera)],

      ),

      bottomNavigationBar: BottomTabBar(

        items: <BottomTabBarItem>[

          BottomTabBarItem(

              icon: Icon(icons[0]), title: Text(titles[0]), badgeNo: badgeNo1),

          BottomTabBarItem(icon: Icon(icons[1]), title: Text(titles[1])),

          BottomTabBarItem(icon: Icon(icons[2]), title: Text(titles[2])),

          BottomTabBarItem(

              icon: Icon(icons[3]),

              activeIcon: Icon(icons[3]),

              title: Text(titles[3])),

          BottomTabBarItem(icon: Icon(icons[4]), title: Text(titles[4])),

        ],

        fixedColor: Colors.blue,

        currentIndex: _selectedIndex,

        onTap: _onItemSelected,

        type: BottomTabBarType.fixed,

        isAnimation: false,

        isInkResponse: false,

        badgeColor: Colors.green,

      ),

      body: Center(

        child: _widgetOptions.elementAt(_selectedIndex),

      ),

    );

  }

}

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版权声明:本文为CSDN博主「我是刘成」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接及本声明。

原文链接:https://blog.csdn.net/liu__520/article/details/84138767

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