界面整合v1

lib/navigation/app_bottom_bar.dart

@@ -0,0 +1,52 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class MenuData {
+  // 标签
+  final String label;
+
+  // 图标数据
+  final IconData icon;
+
+  const MenuData({
+    required this.label,
+    required this.icon,
+  });
+}
+
+class AppBottomBar extends StatelessWidget {
+  final int currentIndex;
+  final List<MenuData> menus;
+  final ValueChanged<int>? onItemTap;
+
+  const AppBottomBar({
+    Key? key,
+    this.onItemTap,
+    this.currentIndex = 0,
+    required this.menus,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return BottomNavigationBar(
+      backgroundColor: Colors.white,
+      onTap: onItemTap,
+      currentIndex: currentIndex,
+      elevation: 3,
+      type: BottomNavigationBarType.fixed,
+      iconSize: 22,
+      selectedItemColor: Theme.of(context).primaryColor,
+      selectedLabelStyle: const TextStyle(fontWeight: FontWeight.bold),
+      showUnselectedLabels: true,
+      showSelectedLabels: true,
+      items: menus.map(_buildItemByMenuMeta).toList(),
+    );
+  }
+
+  BottomNavigationBarItem _buildItemByMenuMeta(MenuData menu) {
+    return BottomNavigationBarItem(
+      label: menu.label,
+      icon: Icon(menu.icon),
+    );
+  }
+}