motion_tab_bar 2.0.4 copy "motion_tab_bar: ^2.0.4" to clipboard
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An animated Bottom Navigation Bar for Flutter apps, icon animates into place, colors are customizable.

example/main.dart

import 'package:flutter/material.dart';
import 'package:motion_tab_bar/MotionBadgeWidget.dart';
import 'package:motion_tab_bar/MotionTabBar.dart';
import 'package:motion_tab_bar/MotionTabBarController.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Motion Tab Bar Sample',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Motion Tab Bar Sample'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, this.title}) : super(key: key);

  final String? title;

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

class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
  // TabController? _tabController;
  MotionTabBarController? _motionTabBarController;

  @override
  void initState() {
    super.initState();
    //// Use normal tab controller
    // _tabController = TabController(
    //   initialIndex: 1,
    //   length: 4,
    //   vsync: this,
    // );

    //// use "MotionTabBarController" to replace with "TabController", if you need to programmatically change the tab
    _motionTabBarController = MotionTabBarController(
      initialIndex: 1,
      length: 4,
      vsync: this,
    );
  }

  @override
  void dispose() {
    super.dispose();
    _motionTabBarController!.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title!),
      ),
      bottomNavigationBar: MotionTabBar(
        controller: _motionTabBarController, // Add this controller if you need to change your tab programmatically
        initialSelectedTab: "Home",
        useSafeArea: true, // default: true, apply safe area wrapper
        labels: const ["Dashboard", "Home", "Profile", "Settings"],
        icons: const [Icons.dashboard, Icons.home, Icons.people_alt, Icons.settings],

        // optional badges, length must be same with labels
        badges: [
          // Default Motion Badge Widget
          const MotionBadgeWidget(
            text: '10+',
            textColor: Colors.white, // optional, default to Colors.white
            color: Colors.red, // optional, default to Colors.red
            size: 18, // optional, default to 18
          ),

          // custom badge Widget
          Container(
            color: Colors.black,
            padding: const EdgeInsets.all(2),
            child: const Text(
              '48',
              style: TextStyle(
                fontSize: 14,
                color: Colors.white,
              ),
            ),
          ),

          // allow null
          null,

          // Default Motion Badge Widget with indicator only
          const MotionBadgeWidget(
            isIndicator: true,
            color: Colors.red, // optional, default to Colors.red
            size: 5, // optional, default to 5,
            show: true, // true / false
          ),
        ],
        tabSize: 50,
        tabBarHeight: 55,
        textStyle: const TextStyle(
          fontSize: 12,
          color: Colors.black,
          fontWeight: FontWeight.w500,
        ),
        tabIconColor: Colors.blue[600],
        tabIconSize: 28.0,
        tabIconSelectedSize: 26.0,
        tabSelectedColor: Colors.blue[900],
        tabIconSelectedColor: Colors.white,
        tabBarColor: Colors.white,
        onTabItemSelected: (int value) {
          setState(() {
            _motionTabBarController!.index = value;
          });
        },
      ),
      body: TabBarView(
        physics: const NeverScrollableScrollPhysics(), // swipe navigation handling is not supported
        controller: _motionTabBarController,
        children: <Widget>[
          MainPageContentComponent(title: "Dashboard Page", controller: _motionTabBarController!),
          MainPageContentComponent(title: "Home Page", controller: _motionTabBarController!),
          MainPageContentComponent(title: "Profile Page", controller: _motionTabBarController!),
          MainPageContentComponent(title: "Settings Page", controller: _motionTabBarController!),
        ],
      ),
    );
  }
}

class MainPageContentComponent extends StatelessWidget {
  const MainPageContentComponent({
    required this.title,
    required this.controller,
    Key? key,
  }) : super(key: key);

  final String title;
  final MotionTabBarController controller;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Text(title, style: const TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
          const SizedBox(height: 50),
          const Text('Go to "X" page programmatically'),
          const SizedBox(height: 10),
          ElevatedButton(
            onPressed: () => controller.index = 0,
            child: const Text('Dashboard Page'),
          ),
          ElevatedButton(
            onPressed: () => controller.index = 1,
            child: const Text('Home Page'),
          ),
          ElevatedButton(
            onPressed: () => controller.index = 2,
            child: const Text('Profile Page'),
          ),
          ElevatedButton(
            onPressed: () => controller.index = 3,
            child: const Text('Settings Page'),
          ),
        ],
      ),
    );
  }
}
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An animated Bottom Navigation Bar for Flutter apps, icon animates into place, colors are customizable.

Repository (GitHub)
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Documentation

API reference

License

MIT (LICENSE)

Dependencies

flutter, vector_math

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