new

frontend/src/components/activity/ActivityCard.jsx

@@ -1,13 +1,15 @@
 
-import React from 'react';
+import React, { useState } from 'react';
 import { motion } from 'framer-motion';
-import { CalendarOutlined, RightOutlined } from '@ant-design/icons';
+import { CalendarOutlined } from '@ant-design/icons';
 import { useNavigate } from 'react-router-dom';
 import styles from './activity.module.less';
-import { hoverScale, imageFadeIn } from '../../animation';
+import { hoverScale } from '../../animation';
 
-const ActivityCard = ({ activity, index }) => {
+const ActivityCard = ({ activity }) => {
   const navigate = useNavigate();
+  const [isLoaded, setIsLoaded] = useState(false);
+  const [hasError, setHasError] = useState(false);
 
   const handleCardClick = () => {
     navigate(`/activity/${activity.id}`);
@@ -17,7 +19,6 @@ const ActivityCard = ({ activity, index }) => {
     const now = new Date();
     const start = new Date(startTime);
     if (now < start) return '即将开始';
-    // Simple logic, can be enhanced
     return '报名中';
   };
 
@@ -27,6 +28,10 @@ const ActivityCard = ({ activity, index }) => {
     return date.toLocaleDateString('zh-CN', { month: 'long', day: 'numeric' });
   };
 
+  const imgSrc = hasError 
+    ? 'https://via.placeholder.com/600x400?text=No+Image' 
+    : (activity.display_banner_url || activity.banner_url || activity.cover_image || 'https://via.placeholder.com/600x400');
+
   return (
     <motion.div
       className={styles.activityCard}
@@ -37,13 +42,31 @@ const ActivityCard = ({ activity, index }) => {
       style={{ willChange: 'transform' }}
     >
       <div className={styles.imageContainer}>
+        {/* Placeholder / Skeleton Background */}
+        <div 
+          style={{
+            position: 'absolute',
+            top: 0,
+            left: 0,
+            width: '100%',
+            height: '100%',
+            backgroundColor: '#f0f0f0',
+            opacity: isLoaded ? 0 : 1,
+            transition: 'opacity 0.5s ease'
+          }}
+        />
+        
         <motion.img
-          src={activity.display_banner_url || activity.banner_url || activity.cover_image || 'https://via.placeholder.com/600x400'}
+          src={imgSrc}
           alt={activity.title}
-          variants={imageFadeIn}
-          initial="hidden"
-          whileInView="visible"
-          viewport={{ once: true }}
+          initial={{ opacity: 0 }}
+          animate={{ opacity: isLoaded ? 1 : 0 }}
+          transition={{ duration: 0.5 }}
+          onLoad={() => setIsLoaded(true)}
+          onError={() => {
+            setHasError(true);
+            setIsLoaded(true); // Show placeholder image
+          }}
           loading="lazy"
         />
         <div className={styles.overlay}>