Refactor(云灵AI):换一换动态效果实现

(cherry picked from commit 898c3b74bc)

aiChat/mixins/chatMixinsV2.js

@@ -416,10 +416,10 @@ export const chatMixinsV2 = {
         }
       })
       if (idx > -1) {
-        this.$set(this.chatMessageList[idx], 'changeIsRotate', true)
         if (this.chatMessageList[idx].changeIsRotate) {
           return
         }
+        this.$set(this.chatMessageList[idx], 'changeIsRotate', true)
       }
       let listKey = ''
       // 抽奖和订单查询没有换一换
@@ -457,6 +457,8 @@ export const chatMixinsV2 = {
             this.$set(this.chatMessageList[idx], 'changeIsRotate', false)
           }, 1000)
         }
+      }).catch(error => {
+        this.$set(this.chatMessageList[idx], 'changeIsRotate', false)
       })
     },
     productItemClickHandle(item) {

aiChat/views/index.vue

@@ -1,6 +1,9 @@
 <template>
   <view
-    :class="scrollTop > 0 ? 'page-scroll' : ''"
+    :class="{
+      'page-scroll': scrollTop > 0,
+      'new-chat': chatMessageListLength === 0
+    }"
     class="fix-tabbar-page"
   >
     <hx-navbar
@@ -771,7 +774,7 @@ export default {
     }
     .icon {
       display: flex;
-      width: 40rpx;
+      width: 32rpx;
       height: 32rpx;
       margin: 0 8rpx 0 0;
       &.rotate {