feat: 增加ios支付

lib/app/modules/kr_login/views/kr_login_view.dart

@@ -203,7 +203,7 @@ class KRLoginView extends GetView<KRLoginController> {
                 controller: controller.accountController,
                 hintText: 'Email',
               ),
-              SizedBox(height: 10.w),
+              SizedBox(height: 10),
               _buildStandardInputField(
                 controller: controller.psdController,
                 hintText: '密码',
@@ -226,7 +226,7 @@ class KRLoginView extends GetView<KRLoginController> {
     bool isPassword = false,
   }) {
     return SizedBox(
-      height: 50, // 固定高度
+      // height: 50, // 固定高度
       child: TextField(
         controller: controller,
         obscureText: isPassword,

lib/app/modules/kr_purchase_membership/controllers/kr_purchase_membership_controller.dart

@@ -17,6 +17,7 @@ import '../../../services/api_service/kr_api.user.dart';
 import '../../../utils/kr_event_bus.dart';
 import '../../../network/http_util.dart';
 import 'package:flutter/foundation.dart';
+import 'package:flutter_stripe/flutter_stripe.dart';
 
 /// 会员购买控制器
 /// 负责处理会员套餐选择、支付方式选择和订阅流程
@@ -460,18 +461,54 @@ class KRPurchaseMembershipController extends GetxController {
 
   /// 处理购买和结账流程
   Future<void> kr_processPurchaseAndCheckout() async {
-
     final selectedPlan = kr_plans[kr_selectedPlanIndex.value];
+// =========================================================================
+    // 🔽 支付方式选择优化：iOS 优先使用 Stripe 🔽
+    // =========================================================================
+    final isIOS = Platform.isIOS;
 
-    // ⚠️ 支付方式接口暂未实现，使用默认支付方式 ID (1) 和平台 'alipay'
-    final paymentMethodId = kr_paymentMethods.isNotEmpty && kr_selectedPaymentMethodIndex.value >= 0
-        ? kr_paymentMethods[kr_selectedPaymentMethodIndex.value].id
-        : 1;
-    final paymentPlatform = kr_paymentMethods.isNotEmpty && kr_selectedPaymentMethodIndex.value >= 0
-        ? kr_paymentMethods[kr_selectedPaymentMethodIndex.value].platform
-        : 'alipay';
+    // 1. 初始化为默认回退值
+    int finalPaymentMethodId = 1;
+    String finalPaymentPlatform = 'alipay';
 
-    // 获取选中的数量
+    if (kr_paymentMethods.isNotEmpty) {
+      // 检查是否有用户已选中且索引有效
+      final bool isIndexValid = kr_selectedPaymentMethodIndex.value >= 0 &&
+          kr_selectedPaymentMethodIndex.value < kr_paymentMethods.length;
+
+      if (isIOS) {
+        // 2. iOS 专属：查找 'stripe'
+        final stripeMethod = kr_paymentMethods.firstWhere(
+          (method) => method.platform == 'Stripe',
+        );
+
+        if (stripeMethod != null) {
+          // 找到了 Stripe，使用它
+          finalPaymentMethodId = stripeMethod.id;
+          finalPaymentPlatform = stripeMethod.platform;
+        } else if (isIndexValid) {
+          // 找不到 Stripe，但用户有选中，使用选中的方式
+          finalPaymentMethodId =
+              kr_paymentMethods[kr_selectedPaymentMethodIndex.value].id;
+          finalPaymentPlatform =
+              kr_paymentMethods[kr_selectedPaymentMethodIndex.value].platform;
+        }
+      } else {
+        // 3. 非 iOS 环境：如果用户有选中，使用选中的方式
+        if (isIndexValid) {
+          finalPaymentMethodId =
+              kr_paymentMethods[kr_selectedPaymentMethodIndex.value].id;
+          finalPaymentPlatform =
+              kr_paymentMethods[kr_selectedPaymentMethodIndex.value].platform;
+        }
+      }
+    }
+
+    final paymentMethodId = finalPaymentMethodId;
+    final paymentPlatform = finalPaymentPlatform;
+    // =========================================================================
+    // 🔼 支付方式选择优化结束 🔼
+    // =========================================================================
     final quantity = kr_getSelectedQuantity();
 
     // 判断是续订还是新购
@@ -805,6 +842,20 @@ class KRPurchaseMembershipController extends GetxController {
           print('  Stripe Client Secret: ${checkoutResponse.stripe?.clientSecret}');
           print('💳 显示 Stripe 支付表单...');
           print('═══════════════════════════════════════');
+          await Stripe.instance.initPaymentSheet(
+            paymentSheetParameters: SetupPaymentSheetParameters(
+              // ⚠️ Stripe SDK 必须在 main() 中初始化过 publishableKey
+              paymentIntentClientSecret: checkoutResponse.stripe?.clientSecret,
+              merchantDisplayName: 'Hi快VPN',
+              // 确保 customerId 和 ephemeralKeySecret 也被设置，如果需要保存卡片信息
+            ),
+          );
+
+          // B. 显示支付表单给用户
+          await Stripe.instance.presentPaymentSheet();
+
+          // C. 支付成功
+          print('✅ Stripe 支付成功！');
 
           Get.toNamed(
             Routes.KR_ORDER_STATUS,