fix

 <!--
  * @Date: 2022-09-26 14:36:57
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2022-11-01 16:02:50
+ * @LastEditTime: 2022-11-02 10:52:00
  * @FilePath: /swx/src/pages/activityDetail/index.vue
  * @Description: 活动详情页
 -->
@@ -10,7 +10,7 @@
     <view class="share-wrapper">
       <van-image width="100%" height="15rem" fit="cover" :src="activity.cover" />
       <view @tap="shareActivity" class="share-button">
-        <van-icon name="share-o" />
+        <van-icon name="share-o" color="" />
         <text>分享</text>
       </view>
     </view>
@@ -534,7 +534,9 @@ export default {
   },
   data () {
     return {
-      activity: {},
+      activity: {
+        cover: '',
+      },
       host: {},
       member_role: '',
       reg_id: '',