feat: 添加riverpod

lib/views/LoginPage.dart

@@ -1,10 +1,21 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/widget_previews.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_study/views/LoginPageProvider.dart';
 import 'package:go_router/go_router.dart';
 
-class LoginPage extends StatelessWidget {
+class LoginPage extends ConsumerStatefulWidget {
   const LoginPage({super.key});
 
+  @override
+  ConsumerState<LoginPage> createState() {
+    return _LoginPageState();
+  }
+}
+
+class _LoginPageState extends ConsumerState<LoginPage> {
+  late final currentUser = ref.watch(loginUserProvider);
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -24,6 +35,12 @@ class LoginPage extends StatelessWidget {
                   flex: 4,
                   child: TextField(
                     decoration: const InputDecoration(hintText: '请输入用户名'),
+                    controller: TextEditingController(
+                      text: currentUser.username,
+                    ),
+                    onChanged: (value) {
+                      ref.read(loginUserProvider).username = value;
+                    },
                   ),
                 ),
               ],
@@ -36,6 +53,15 @@ class LoginPage extends StatelessWidget {
                   flex: 4,
                   child: TextField(
                     decoration: const InputDecoration(hintText: '请输入密码'),
+                    controller: TextEditingController(
+                      text: currentUser.password,
+                    ),
+                    onChanged: (value) {
+                      ref.read(loginUserProvider.notifier).update((oldValue) {
+                        oldValue.password = value;
+                        return oldValue;
+                      });
+                    },
                     obscureText: true,
                   ),
                 ),