From 6923a0585c819e5fee53cc1381c4215f91158f78 Mon Sep 17 00:00:00 2001
From: wangjia <809946525@qq.com>
Date: Thu, 30 Apr 2026 19:30:11 +0800
Subject: [PATCH] =?UTF-8?q?fix(client):=20=E4=BF=AE=E5=A4=8D=E6=89=93?=
 =?UTF-8?q?=E5=8D=B0=E6=8C=89=E9=92=AE=E5=8A=A0=E8=BD=BD=E5=90=8E=E4=B8=8D?=
 =?UTF-8?q?=E6=BF=80=E6=B4=BB=E9=97=AE=E9=A2=98?=
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setState 触发重建，确保二维码加载完成后按钮变为可点击。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 client/lib/screens/products/product_detail_screen.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/client/lib/screens/products/product_detail_screen.dart b/client/lib/screens/products/product_detail_screen.dart
index 18c1eac..bcf95e9 100644
--- a/client/lib/screens/products/product_detail_screen.dart
+++ b/client/lib/screens/products/product_detail_screen.dart
@@ -519,7 +519,9 @@ class _QRCodeDialogState extends ConsumerState<_QRCodeDialog> {
     _future = ref
         .read(productRepositoryProvider)
         .getQRCodeBytes(widget.productId)
-      ..then((b) => _bytes = b);
+      ..then((b) {
+        if (mounted) setState(() => _bytes = b);
+      });
   }
 
   Future<void> _print() async {