Create navbar and navbar screens

sevport_app/lib/main.dart

 import 'package:flutter/material.dart';
-import 'login_screen.dart';
+import 'pages/login_screen.dart';
 
 void main() {
   runApp(MyApp());

sevport_app/lib/login_screen.dart → sevport_app/lib/pages/login_screen.dart

 import 'package:flutter/material.dart';
-
+import 'navbar.dart';
 import 'signup_screen.dart';
 
 class LoginScreen extends StatefulWidget {
@@ -107,7 +107,8 @@ Widget initWidget(BuildContext context) {
 
           GestureDetector(
             onTap: () => {
-              //Link to nav bar
+              Navigator.push(context,
+                  MaterialPageRoute(builder: (context) => NavBarScreen()))
             },
             child: Container(
               margin: EdgeInsets.only(left: 20, right: 20, top: 70),

sevport_app/lib/pages/navbar.dart

+import 'package:curved_navigation_bar/curved_navigation_bar.dart';
+import 'package:flutter/material.dart';
+
+import 'navbar_screens/account.dart';
+import 'navbar_screens/history.dart';
+import 'navbar_screens/home.dart';
+import 'navbar_screens/notifications.dart';
+import 'navbar_screens/vehicle_details.dart';
+
+class NavBarScreen extends StatefulWidget {
+  @override
+  _NavBarScreenState createState() => _NavBarScreenState();
+}
+
+class _NavBarScreenState extends State<NavBarScreen> {
+  int selected_index = 2;
+
+  final HistoryScreen _history = new HistoryScreen();
+  final VehicleDetailsScreen _vehicleDetails = new VehicleDetailsScreen();
+  final HomeScreen _home = HomeScreen();
+  final NotificationsScreen _notifications = new NotificationsScreen();
+  final AccountScreen _account = new AccountScreen();
+
+  Widget _showPage = new HomeScreen();
+
+  Widget _pageChooser(int page) {
+    switch (page) {
+      case 0:
+        return _history;
+      case 1:
+        return _vehicleDetails;
+      case 2:
+        return _home;
+      case 3:
+        return _notifications;
+      case 4:
+        return _account;
+      default:
+        return new Container(
+          child: new Center(
+            child: new Text("No page found"),
+          ),
+        );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      bottomNavigationBar: CurvedNavigationBar(
+        index: selected_index,
+        color: Color(0xff01122b),
+        buttonBackgroundColor: Color(0xff01122b),
+        backgroundColor: Colors.white,
+        animationDuration: Duration(milliseconds: 400),
+        animationCurve: Curves.easeInBack,
+        height: 55.0,
+        items: <Widget>[
+          Icon(Icons.history, size: 30, color: Colors.white),
+          Icon(Icons.car_rental_rounded, size: 30, color: Colors.white),
+          Icon(Icons.home, size: 30, color: Colors.white),
+          Icon(Icons.notification_add, size: 30, color: Colors.white),
+          Icon(Icons.person, size: 30, color: Colors.white),
+        ],
+        onTap: (int tapped_index) {
+          setState(() {
+            _showPage = _pageChooser(tapped_index);
+          });
+        },
+      ),
+      body: Container(
+        child: Center(
+          child: _showPage,
+        ),
+      ),
+    );
+  }
+}

sevport_app/lib/pages/navbar_screens/account.dart

+import 'package:flutter/material.dart';
+
+class AccountScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => InitState();
+}
+
+class InitState extends State<AccountScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return initWidget();
+  }
+
+  Widget initWidget() {
+    return Container(
+      child: Text(
+        'Account',
+        textScaleFactor: 2.0,
+      ),
+    );
+  }
+}

sevport_app/lib/pages/navbar_screens/history.dart

+import 'package:flutter/material.dart';
+
+class HistoryScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => InitState();
+}
+
+class InitState extends State<HistoryScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return initWidget();
+  }
+
+  Widget initWidget() {
+    return Container(
+      child: Text(
+        'History',
+        textScaleFactor: 2.0,
+      ),
+    );
+  }
+}

sevport_app/lib/pages/navbar_screens/home.dart

+import 'package:flutter/material.dart';
+
+class HomeScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => InitState();
+}
+
+class InitState extends State<HomeScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return initWidget();
+  }
+
+  Widget initWidget() {
+    return Container(
+      child: Text(
+        'New Booking',
+        textScaleFactor: 2.0,
+      ),
+    );
+  }
+}

sevport_app/lib/pages/navbar_screens/notifications.dart

+import 'package:flutter/material.dart';
+
+class NotificationsScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => InitState();
+}
+
+class InitState extends State<NotificationsScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return initWidget();
+  }
+
+  Widget initWidget() {
+    return Container(
+      child: Text(
+        'Notifications',
+        textScaleFactor: 2.0,
+      ),
+    );
+  }
+}

sevport_app/lib/pages/navbar_screens/vehicle_details.dart

+import 'package:flutter/material.dart';
+
+class VehicleDetailsScreen extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => InitState();
+}
+
+class InitState extends State<VehicleDetailsScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return initWidget();
+  }
+
+  Widget initWidget() {
+    return Container(
+      child: Text(
+        'Vehicle Details',
+        textScaleFactor: 2.0,
+      ),
+    );
+  }
+}