aggiunto schermate login e register

lib/navigation.dart

@@ -1,8 +1,13 @@
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
+import 'package:progetto_m335_flutter/pages/LoginView.dart';
+import 'package:progetto_m335_flutter/pages/RegisterView.dart';
 import 'pages/TodayView.dart';
 import 'pages/InboxView.dart';
 import 'pages/NotesView.dart';
 
+
+
 class Navigation extends StatefulWidget {
   const Navigation({super.key});
 
@@ -12,12 +17,15 @@ class Navigation extends StatefulWidget {
 
 class _NavigationState extends State<Navigation> {
 
-  int _selectedIndex = 0;
+  int _selectedIndex = 1;
   static const List<Widget> _widgetOptions = <Widget>[
+    LoginView(),
+    RegisterView(),
     TodayView(),
     InboxView(),
     NotesView(),
   ];
+  FirebaseAuth auth = FirebaseAuth.instance;
 
   void _onItemTapped(int index) {
     setState(() {
@@ -25,6 +33,20 @@ class _NavigationState extends State<Navigation> {
     });
   }
 
+  @override
+  void initState() {
+    FirebaseAuth.instance
+        .authStateChanges()
+        .listen((User? user) {
+      if (user == null) {
+        print('User is currently signed out!');
+      } else {
+        print('User is signed in!');
+      }
+    });
+    super.initState();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -34,6 +56,8 @@ class _NavigationState extends State<Navigation> {
       body: Center(child: _widgetOptions.elementAt(_selectedIndex)),
       bottomNavigationBar: BottomNavigationBar(
         items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(icon: Icon(Icons.login), label: "Login"),
+          BottomNavigationBarItem(icon: Icon(Icons.app_registration), label: "Register"),
           BottomNavigationBarItem(
               icon: Icon(Icons.calendar_today), label: "today"),
           BottomNavigationBarItem(icon: Icon(Icons.inbox), label: "Inbox"),
@@ -41,6 +65,7 @@ class _NavigationState extends State<Navigation> {
         ],
         currentIndex: _selectedIndex,
         onTap: _onItemTapped,
+        type: BottomNavigationBarType.fixed,
       ),
     );
   }