导航栏代码，配置文件

ln_jq_app/lib/common/model/base_model.dart

@@ -0,0 +1,19 @@
+class BaseModel {
+  bool? success;
+  String? type;
+  String? url;
+
+  BaseModel({this.success, this.type, this.url});
+
+  factory BaseModel.fromJson(Map<String, dynamic> json) => BaseModel(
+        success: json['success']?.toString().contains("true"),
+        type: json['type']?.toString(),
+        url: json['url']?.toString(),
+      );
+
+  Map<String, dynamic> toJson() => {
+        if (success != null) 'success': success,
+        if (type != null) 'type': type,
+        if (url != null) 'url': url,
+      };
+}

ln_jq_app/lib/common/styles/theme.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+
+class AppTheme {
+  static const String Font_Montserrat = 'Montserrat';
+
+  static const String Font_YuYang = 'YuYang';
+
+  static const Color themeColor = Color(0xFF0c83c3);
+
+  static const Color secondaryColor = Colors.orange;
+
+  static const Color darkThemeColor = Color(0xFF032896);
+
+  /// 亮色主题样式
+  static ThemeData light = ThemeData(
+    useMaterial3: false,
+    fontFamily: Font_Montserrat,
+    colorScheme: ColorScheme.fromSeed(
+      seedColor: themeColor,
+      primary: themeColor,
+      secondary: secondaryColor,
+      brightness: Brightness.light,
+      surface: Colors.white,
+      surfaceTint: Colors.transparent,
+    ),
+    appBarTheme: const AppBarTheme(
+      backgroundColor: Colors.white,
+      foregroundColor: Color.fromARGB(200, 0, 0, 0),
+      centerTitle: true,
+      titleTextStyle: TextStyle(
+        fontSize: 18,
+        fontWeight: FontWeight.bold,
+        color: Color.fromARGB(200, 0, 0, 0),
+      ),
+    ),
+  );
+
+  /// 暗色主题样式
+  static ThemeData dark = ThemeData(
+    useMaterial3: false,
+    fontFamily: Font_Montserrat,
+    colorScheme: ColorScheme.fromSeed(
+      seedColor: darkThemeColor,
+      brightness: Brightness.dark,
+      surface: const Color.fromARGB(255, 42, 42, 42),
+      surfaceTint: Colors.transparent,
+    ),
+    appBarTheme: const AppBarTheme(
+      backgroundColor: Color.fromARGB(255, 34, 34, 34),
+      centerTitle: true,
+      titleTextStyle: TextStyle(
+        fontSize: 18,
+        fontWeight: FontWeight.bold,
+      ),
+    ),
+    bottomAppBarTheme:  BottomAppBarThemeData(
+      color: Color.fromARGB(255, 34, 34, 34),
+      elevation: 4.0,
+    ),
+  );
+}