优化页面

lib/pages/mine/user_info_page.dart

@@ -224,31 +224,37 @@ class UserInfoPage extends StatelessWidget {
       init: UserInfoController(),
       builder: (controller) {
         return Scaffold(
+          extendBodyBehindAppBar: true,
+          appBar: AppBar(
+            title: const Text(
+              '完善信息',
+              style: TextStyle(
+                fontSize: 20,
+                fontWeight: FontWeight.bold,
+                color: Color.fromRGBO(51, 51, 51, 1),
+              ),
+            ),
+            backgroundColor: Colors.transparent,
+            shadowColor: Colors.transparent,
+            elevation: 0,
+            centerTitle: true,
+            automaticallyImplyLeading: false,
+          ),
           body: Stack(
             children: [
-              // 背景图
-              Positioned.fill(
-                child: Image.asset(
-                  Assets.imagesBgInformation,
-                  fit: BoxFit.cover,
-                ),
+              // 背景图 - 覆盖全页面包括AppBar
+              Image.asset(
+                Assets.imagesBgInformation,
+                fit: BoxFit.cover,
+                width: double.infinity,
+                height: double.infinity,
               ),
-              // 内容区域
+              // 内容区域，顶部留出AppBar高度空间
               SafeArea(
                 child: SingleChildScrollView(
                   padding: const EdgeInsets.symmetric(horizontal: 20.0),
                   child: Column(
                     children: [
-                      // 标题
-                      const SizedBox(height: 20),
-                      const Text(
-                        '完善信息',
-                        style: TextStyle(
-                          fontSize: 20,
-                          fontWeight: FontWeight.bold,
-                          color: Color.fromRGBO(51, 51, 51, 1),
-                        ),
-                      ),
                       const SizedBox(height: 25),
                        
                       // 头像