flutter BottomAppBar selected颜色

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter BottomAppBar Selected Color'),
        ),
        body: Center(
          child: Text('Hello, Flutter!'),
        ),
        bottomNavigationBar: BottomAppBar(
          color: Colors.blue, // 设置导航栏的背景颜色
          selectedColor: Colors.red, // 设置选中项的颜色
          items: [
            BottomNavigationBarItem(
              icon: Icon(Icons.home),
              label: 'Home',
            ),
            BottomNavigationBarItem(
              icon: Icon(Icons.search),
              label: 'Search',
            ),
            BottomNavigationBarItem(
              icon: Icon(Icons.person),
              label: 'Profile',
            ),
          ],
        ),
      ),
    );
  }
}