完善登录页

netrain_flutter_app/lib/laishanqi/Stateful_page.dart

 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/Cat.dart';
 
+import 'Cat.dart';
 import 'layout_page.dart';
 
 /// 有状态组件
@@ -54,7 +54,7 @@ class _StatefulGroupState extends State<FulGroupPage> {
                   Icons.home,
                   color: Colors.blue,
                 ),
-                title: Text("首页")),
+                label: "首页"),
             BottomNavigationBarItem(
                 icon: Icon(
                   Icons.accessibility,
@@ -64,7 +64,7 @@ class _StatefulGroupState extends State<FulGroupPage> {
                   Icons.accessibility,
                   color: Colors.blue,
                 ),
-                title: Text("我的")),
+                label: "我的"),
           ],
         ),
         body: _currentIndex == 0

netrain_flutter_app/lib/laishanqi/layout_page.dart

 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/Cat.dart';
-
-import 'Stateful_page.dart';
 
 class LayoutPage extends StatefulWidget {
   @override

netrain_flutter_app/lib/laishanqi/photo.dart

 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/Cat.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/layout_page.dart';
 import 'package:image_picker/image_picker.dart';
 
 class PhotoApp extends StatelessWidget {

netrain_flutter_app/lib/main.dart

 import 'package:flutter/material.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/Cat.dart';
-import 'file:///E:/studioProject/netrain_flutter_app/netrain_flutter_app/lib/laishanqi/layout_page.dart';
 
 import 'laishanqi/Stateful_page.dart';
 import 'laishanqi/Stateless_page.dart';
+import 'laishanqi/layout_page.dart';
 import 'laishanqi/loginPage.dart';
 import 'laishanqi/photo.dart';
 

netrain_flutter_app/pubspec.lock

@@ -7,42 +7,42 @@ packages:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.4.2"
+    version: "2.5.0-nullsafety.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0-nullsafety.1"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0-nullsafety.3"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.3"
+    version: "1.2.0-nullsafety.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.1"
+    version: "1.1.0-nullsafety.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.14.13"
+    version: "1.15.0-nullsafety.3"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -56,7 +56,7 @@ packages:
       name: fake_async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0-nullsafety.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -74,6 +74,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  fluttertoast:
+    dependency: "direct main"
+    description:
+      name: fluttertoast
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.3"
   http:
     dependency: transitive
     description:
@@ -108,21 +115,21 @@ packages:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.8"
+    version: "0.12.10-nullsafety.1"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0-nullsafety.3"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0-nullsafety.1"
   pedantic:
     dependency: transitive
     description:
@@ -136,7 +143,7 @@ packages:
       name: plugin_platform_interface
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.2"
+    version: "1.0.3"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -148,56 +155,56 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0-nullsafety.2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.9.5"
+    version: "1.10.0-nullsafety.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0-nullsafety.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0-nullsafety.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0-nullsafety.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.17"
+    version: "0.2.19-nullsafety.2"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0-nullsafety.3"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.3"
 sdks:
-  dart: ">=2.9.0-14.0.dev <3.0.0"
+  dart: ">=2.10.0-110 <2.11.0"
   flutter: ">=1.12.13 <2.0.0"

netrain_flutter_app/pubspec.yaml

@@ -29,6 +29,7 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.3
   image_picker: ^0.6.7+11
+  fluttertoast: ^3.1.3
 
 dev_dependencies:
   flutter_test: