[Flutter] Feedback on Flutter BottomNavigationBar Implementation

this is my bottomnavbar

i want it look like this

an i phone dock has a rounded corners

I'm working on a Flutter app and just implemented a BottomNavigationBar with a custom AppBar. Below is the code for my HomePage widget:

import 'package:flutter/material.dart';
import 'dart:ui'; // For ImageFilter.blur

import 'screens/profile.dart';
import 'home_screen.dart';
import 'book_appointment.dart';
import 'screens/history.dart';

class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
int _bottomNavIndex = 0;

final List<Widget> _pages = [
HomeScreen(),
AppointmentPage(),
HistoryPage(),
];

final List<IconData> _iconList = [
Icons.home_filled,
Icons.add_rounded,
Icons.history,
];

final List<String> _titleList = [
'Home',
'Appointments',
'History',
];

PreferredSizeWidget? _buildAppBar() {
if (_bottomNavIndex == 0) {
return PreferredSize(
preferredSize: Size.fromHeight(60),
child: AppBar(
backgroundColor: Colors.transparent,
flexibleSpace: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/appbar.png'),
fit: BoxFit.cover,
),
),
),
title: GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => ProfilePage()),
);
},
child: Row(
children: [
Padding(
padding: EdgeInsets.only(top: 10),
child: CircleAvatar(
backgroundImage: AssetImage('assets/pogisivenz.png'),
radius: 20,
),
),
SizedBox(width: 10),
Text(
'Hi, Harold Pogi',
style: TextStyle(color: Color(0xFFE5D9F2)),
),
],
),
),
),
);
}
return null;
}

Widget _buildBottomNavigationBar() {
return Container(
decoration: BoxDecoration(
color: Colors.white, // Background color for the dock
borderRadius: BorderRadius.vertical(
top: Radius.circular(30), // Rounded corners at the top
),
boxShadow: [
BoxShadow(color: Colors.black38, spreadRadius: 0, blurRadius: 10),
],
),
margin: const EdgeInsets.only(bottom: 20.0), // Margin for the floating effect
child: ClipRRect(
borderRadius: BorderRadius.vertical(
top: Radius.circular(30), // Match the top rounded corners
),
child: BottomNavigationBar(
items: <BottomNavigationBarItem>[
BottomNavigationBarItem(
icon: Icon(_iconList[0]),
label: _titleList[0],
),
BottomNavigationBarItem(
icon: Icon(_iconList[1]),
label: _titleList[1],
),
BottomNavigationBarItem(
icon: Icon(_iconList[2]),
label: _titleList[2],
),
],
currentIndex: _bottomNavIndex,
selectedItemColor: const Color.fromARGB(255, 116, 23, 133),
unselectedItemColor: Colors.black,
onTap: (index) {
setState(() {
_bottomNavIndex = index;
});
},
),
),
);
}

@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent, // Make Scaffold background transparent
appBar: _buildAppBar(),
body: Stack(
children: [
Positioned.fill(
child: Image.asset(
'assets/splash.png',
fit: BoxFit.cover,
),
),
Positioned.fill(
child: AnimatedSwitcher(
duration: Duration(milliseconds: 300),
child: _pages[_bottomNavIndex],
),
),
],
),
bottomNavigationBar: _buildBottomNavigationBar(),
);
}
}


i tried changing it on my own many times but its not working pls help

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