lib/home.dart

@@ -1,72 +1,94 @@
-import 'package:firebase_auth/firebase_auth.dart';
-import 'package:ruswipeshare/main.dart';
 import 'package:flutter/material.dart';
+import 'package:persistent_bottom_nav_bar/persistent_tab_view.dart';
 
-class HomeScreen extends StatelessWidget {
-  const HomeScreen({super.key});
+import 'main_screen.dart';
+
+class HomeScreen extends StatefulWidget {
+  const HomeScreen({ Key? key }) : super(key: key);
+
+  @override
+  _HomeScreenState createState() => _HomeScreenState();
+}
+
+class _HomeScreenState extends State<HomeScreen> {
+  late PersistentTabController _controller;
+   @override
+  void initState() {
+    super.initState();
+    _controller = PersistentTabController();
+  }
+  List<Widget> _buildScreens() => [
+        const MainScreen(),
+        const MainScreen(),
+        const MainScreen(),
+        const MainScreen(),
+      ];
+
+  List<PersistentBottomNavBarItem> _navBarsItems() => [
+        PersistentBottomNavBarItem(
+            icon: const Icon(Icons.shopping_cart),
+            title: "Buy",
+            activeColorPrimary: Colors.blue,
+            inactiveColorPrimary: Colors.grey,
+            inactiveColorSecondary: Colors.purple),
+        PersistentBottomNavBarItem(
+          icon: const Icon(Icons.attach_money),
+          title: "Sell",
+          activeColorPrimary: Colors.teal,
+          inactiveColorPrimary: Colors.grey,
+          routeAndNavigatorSettings: const RouteAndNavigatorSettings(
+            initialRoute: "/",
+          ),
+        ),
+        PersistentBottomNavBarItem(
+          icon: const Icon(Icons.person),
+          title: "Profile",
+          activeColorPrimary: Colors.blueAccent,
+          inactiveColorPrimary: Colors.grey,
+          routeAndNavigatorSettings: const RouteAndNavigatorSettings(
+            initialRoute: "/",
+          ),
+        ),
+        PersistentBottomNavBarItem(
+          icon: const Icon(Icons.settings),
+          title: "Settings",
+          activeColorPrimary: Colors.indigo,
+          inactiveColorPrimary: Colors.grey,
+          routeAndNavigatorSettings: const RouteAndNavigatorSettings(
+            initialRoute: "/",
+          ),
+        ),
+      ];
       
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: const Text('FlutterFire UI'),
+    return PersistentTabView(
+        context,
+        controller: _controller,
+        screens: _buildScreens(),
+        items: _navBarsItems(),
+        confineInSafeArea: true,
+        backgroundColor: Colors.white, // Default is Colors.white.
+        handleAndroidBackButtonPress: true, // Default is true.
+        resizeToAvoidBottomInset: true, // This needs to be true if you want to move up the screen when keyboard appears. Default is true.
+        stateManagement: true, // Default is true.
+        hideNavigationBarWhenKeyboardShows: true, // Recommended to set 'resizeToAvoidBottomInset' as true while using this argument. Default is true.
+        decoration: NavBarDecoration(
+          borderRadius: BorderRadius.circular(10.0),
+          colorBehindNavBar: Colors.white,
         ),
-      body: Center(
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: [
-            const Text('You are logged in!'),
-            ElevatedButton(
-              onPressed: () {
-                FirebaseAuth.instance.signOut();
-              },
-              child: const Text('Sign out'),
+        popAllScreensOnTapOfSelectedTab: true,
+        popActionScreens: PopActionScreensType.all,
+        itemAnimationProperties: const ItemAnimationProperties( // Navigation Bar's items animation properties.
+          duration: Duration(milliseconds: 200),
+          curve: Curves.ease,
         ),
-          ],
+        screenTransitionAnimation: const ScreenTransitionAnimation( // Screen transition animation on change of selected tab.
+          animateTabTransition: true,
+          curve: Curves.ease,
+          duration: Duration(milliseconds: 200),
         ),
-      ),
-      bottomNavigationBar: MyNavBar(),
+        navBarStyle: NavBarStyle.style13, // Choose the nav bar style with this property.
     );
   }
 }
-
-// class _HomeScreenState extends State<HomeScreen> {
-//   int _selectedIndex = 0;
-
-//   void _onItemTapped(int index) {
-//     if (_selectedIndex == index) return;
-
-//     setState(() {
-//       _selectedIndex = index;
-//     });
-
-//     Navigator.push(
-//       context,
-//       MaterialPageRoute(builder: (context) => pages.elementAt(index)),
-//     );
-//   }
-
-//   @override
-//   Widget build(BuildContext context) {
-//     return Scaffold(
-//       appBar: AppBar(
-//         title: const Text('FlutterFire UI'),
-//       ),
-//       body: Center(
-//         child: Column(
-//           mainAxisAlignment: MainAxisAlignment.center,
-//           children: [
-//             const Text('You are logged in!'),
-//             ElevatedButton(
-//               onPressed: () {
-//                 FirebaseAuth.instance.signOut();
-//               },
-//               child: const Text('Sign out'),
-//             ),
-//           ],
-//         ),
-//       ),
-//       bottomNavigationBar: const MyNavBar(),
-//     );
-//   }
-// }

lib/main.dart

@@ -1,8 +1,5 @@
 import 'package:firebase_core/firebase_core.dart';
-import 'package:firebase_ui_auth/firebase_ui_auth.dart';
 import 'package:flutter/material.dart';
-import 'package:ruswipeshare/home.dart';
-import 'package:ruswipeshare/sell.dart';
 
 import 'firebase_options.dart';
 import 'auth_gate.dart';
@@ -15,73 +12,38 @@ void main() async {
 }
 
 class MyApp extends StatelessWidget {
+  
  const MyApp({super.key});
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
-        primarySwatch: Colors.blue,
+       primarySwatch: CustomMaterialColor(200,61,61).mdColor,
      ),
-      home: const HomeScreen(),
+     home: const AuthGate(),
    );
  }
 }
+class CustomMaterialColor {
+  final int r;
+  final int g;
+  final int b;
 
-class MyNavBar extends StatefulWidget {
-  MyNavBar({super.key});
+  CustomMaterialColor(this.r, this.g, this.b);
 
-  @override
-  State<MyNavBar> createState() => MyNavBarState();
-}
-
-class MyNavBarState extends State<MyNavBar> {
-  final pages = [
-    const SellScreen(),
-    const SellScreen(),
-  ];
-
-  int _selectedIndex = 0;
-
-  void _onItemTapped(int index) {
-    if (runtimeType == pages.elementAt(index).runtimeType) return;
-
-    setState(() {
-      _selectedIndex = index;
-    });
-
-    Navigator.push(
-      context,
-      MaterialPageRoute(builder: (context) => pages.elementAt(index)),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return BottomNavigationBar(
-      type: BottomNavigationBarType.fixed,
-      backgroundColor: Colors.red,
-      selectedItemColor: Colors.black,
-      unselectedItemColor: Colors.black54,
-      items: const <BottomNavigationBarItem>[
-        BottomNavigationBarItem(
-          icon: Icon(Icons.shopping_cart),
-          label: 'Buy',
-        ),
-        BottomNavigationBarItem(
-          icon: Icon(Icons.attach_money),
-          label: 'Sell',
-        ),
-        BottomNavigationBarItem(
-          icon: Icon(Icons.person),
-          label: 'Profile',
-        ),
-        BottomNavigationBarItem(
-          icon: Icon(Icons.settings),
-          label: 'Settings',
-        ),
-      ],
-      currentIndex: _selectedIndex,
-      onTap: _onItemTapped,
-    );
+  MaterialColor get mdColor {
+    Map<int, Color> color = {
+      50: Color.fromRGBO(r, g, b, .1),
+      100: Color.fromRGBO(r, g, b, .2),
+      200: Color.fromRGBO(r, g, b, .3),
+      300: Color.fromRGBO(r, g, b, .4),
+      400: Color.fromRGBO(r, g, b, .5),
+      500: Color.fromRGBO(r, g, b, .6),
+      600: Color.fromRGBO(r, g, b, .7),
+      700: Color.fromRGBO(r, g, b, .8),
+      800: Color.fromRGBO(r, g, b, .9),
+      900: Color.fromRGBO(r, g, b, 1),
+    };
+    return MaterialColor(Color.fromRGBO(r, g, b, 1).value, color);
   }
 }

lib/main_screen.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+
+class MainScreen extends StatefulWidget {
+  const MainScreen({ Key? key }) : super(key: key);
+
+  @override
+  _MainScreenState createState() => _MainScreenState();
+}
+
+class _MainScreenState extends State<MainScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text("Main Screen"),
+      ),
+      body: const Center(
+        child: Text("Main Screen"),
+      ),
+    );
+  }
+}

lib/sell.dart

@@ -1,18 +0,0 @@
-import 'package:firebase_auth/firebase_auth.dart';
-import 'package:flutter/material.dart';
-import 'package:ruswipeshare/home.dart';
-import 'package:ruswipeshare/main.dart';
-
-class SellScreen extends StatelessWidget {
-  const SellScreen({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      body: Center(
-        child: const Text("Hi"),
-      ),
-      bottomNavigationBar: MyNavBar(),
-    );
-  }
-}

pubspec.lock

@@ -201,30 +201,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.3+30"
-  firebase_ui_auth:
-    dependency: "direct main"
-    description:
-      name: firebase_ui_auth
-      sha256: "67b52b2f7d607355a07bae28d67f28e7b52a1e555a7f7cd1455f2e95be4d0816"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.14"
-  firebase_ui_localizations:
-    dependency: transitive
-    description:
-      name: firebase_ui_localizations
-      sha256: "8ab06ef14bbad6c2f8af63aa2995016996c205fd05db7912df18838a51d023e4"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.2.0"
-  firebase_ui_oauth:
-    dependency: transitive
-    description:
-      name: firebase_ui_oauth
-      sha256: "77faba56761198f57b8939e4a93ef6dbabc1b972a22ff90ec1033dcff981a071"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.14"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -302,7 +278,7 @@ packages:
     source: hosted
     version: "0.4.3+20"
   google_sign_in:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: google_sign_in
       sha256: "821f354c053d51a2d417b02d42532a19a6ea8057d2f9ebb8863c07d81c98aaf9"
@@ -429,6 +405,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.1"
+  persistent_bottom_nav_bar:
+    dependency: "direct main"
+    description:
+      name: persistent_bottom_nav_bar
+      sha256: e2e031e3366fde01511e372a9a19d720a9b252bb456e5c8d77a30d7a4a2ddfb0
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.0.2"
   petitparser:
     dependency: transitive
     description:

pubspec.yaml

@@ -38,9 +38,8 @@ dependencies:
   firebase_core: ^2.7.0
   firebase_auth: ^4.2.9
   flutterfire_ui: ^0.4.3+20
-  google_sign_in: ^5.4.4
   flutter_dotenv: ^5.0.2
-  firebase_ui_auth: ^1.1.14
+  persistent_bottom_nav_bar: any
 
 dev_dependencies:
   flutter_test: