修复搜索框滑动隐藏效果，实现渐进式隐藏和高度收缩

pages/index/index.js

@@ -25,6 +25,9 @@ Page({
     searchSectionVisible: true,
     lastScrollTop: 0,
     isScrollLocked: false,
+    searchSectionOpacity: 1,
+    searchSectionTransform: 0,
+    isSearchBarFullyHidden: false,
     
     // 回到顶部按钮
     showBackToTop: false,
@@ -604,11 +607,13 @@ Page({
     return { leftColumnGoods: leftColumn, rightColumnGoods: rightColumn }
   },
   
-  // 搜索输入
+  // 搜索输入（实时搜索）
   onSearchInput: function(e) {
     this.setData({
       searchKeyword: e.detail.value
     })
+    // 实时应用筛选条件
+    this.searchGoods()
   },
   
   // 搜索商品
@@ -637,22 +642,23 @@ Page({
     })
   },
   
-  // 选择地区
+  // 选择地区（实时更新）
   selectRegion: function(e) {
     const region = e.currentTarget.dataset.region
-    this.setData({
-      selectedRegion: region
-    })
-  },
     
-  // 确认地区选择
-  confirmRegion: function() {
     // 重新显示tabBar
     const app = getApp();
     if (app && app.globalData) {
       app.globalData.showTabBar = true;
     }
     
+    // 应用筛选条件
+    this.setData({
+      selectedRegion: region,
+      showRegionPicker: false
+    })
+    
+    // 重新筛选商品
     const filteredGoods = this.applyFilters(this.data.goods)
     const groupedGoods = this.groupGoodsForStaggeredLayout(filteredGoods)
     const { leftColumnGoods, rightColumnGoods } = this.distributeToColumns(filteredGoods)
@@ -660,8 +666,7 @@ Page({
       filteredGoods: filteredGoods,
       groupedGoods: groupedGoods,
       leftColumnGoods: leftColumnGoods,
-      rightColumnGoods: rightColumnGoods,
-      showRegionPicker: false
+      rightColumnGoods: rightColumnGoods
     })
   },
   
@@ -782,39 +787,44 @@ Page({
   onScroll: function(e) {
     const { scrollTop } = e.detail;
     
-    if (this.data.isScrollLocked) {
-      this.setData({ lastScrollTop: scrollTop });
-      return;
-    }
+    let searchSectionOpacity = 1;
+    let searchSectionTransform = 0;
+    let isSearchBarFullyHidden = false;
     
-    const scrollDirection = scrollTop > this.data.lastScrollTop ? 'down' : 'up';
-    const scrollDelta = Math.abs(scrollTop - this.data.lastScrollTop);
+    if (scrollTop > 50) {
+      // 当滚动距离超过50rpx时，开始逐渐隐藏
+      const hideProgress = Math.min((scrollTop - 50) / 100, 1); // 0-1的隐藏进度
+      searchSectionOpacity = 1 - hideProgress;
+      searchSectionTransform = -20 * hideProgress;
       
-    if (scrollDelta < 10) {
-      this.setData({ lastScrollTop: scrollTop });
-      return;
+      // 当隐藏进度达到100%时，完全隐藏并收缩高度
+      if (hideProgress >= 1) {
+        isSearchBarFullyHidden = true;
+      }
     }
     
-    if (scrollDirection === 'down' && scrollTop > 100 && this.data.searchSectionVisible) {
-      this.setData({ searchSectionVisible: false, isScrollLocked: true });
-      setTimeout(() => {
-        this.setData({ isScrollLocked: false });
-      }, 300);
-    } else if (scrollDirection === 'up' && !this.data.searchSectionVisible && scrollTop < 50) {
-      this.setData({ searchSectionVisible: true, isScrollLocked: true });
-      setTimeout(() => {
-        this.setData({ isScrollLocked: false });
-      }, 300);
+    // 当滚动回到顶部时，重置所有状态
+    if (scrollTop <= 50) {
+      searchSectionOpacity = 1;
+      searchSectionTransform = 0;
+      isSearchBarFullyHidden = false;
     }
     
+    // 更新搜索框状态和样式
+    this.setData({
+      searchSectionOpacity: searchSectionOpacity,
+      searchSectionTransform: searchSectionTransform,
+      isSearchBarFullyHidden: isSearchBarFullyHidden,
+      lastScrollTop: scrollTop
+    });
+    
+    // 回到顶部按钮显示逻辑
     if (scrollTop > 300 && !this.data.showBackToTop) {
       this.setData({ showBackToTop: true });
     } else if (scrollTop <= 300 && this.data.showBackToTop) {
       this.setData({ showBackToTop: false });
     }
     
-    this.setData({ lastScrollTop: scrollTop });
-    
     const { scrollHeight, clientHeight } = e.detail;
     const distanceToBottom = scrollHeight - scrollTop - clientHeight;
     

pages/index/index.wxml

@@ -1,27 +1,33 @@
 <view class="container">
-  <!-- 标题 -->
-  <view class="title {{searchSectionVisible ? '' : 'title-hidden'}}">专业的鸡蛋现货交易平台</view>
+  <!-- 顶部搜索区域容器 -->
+  <view 
+    class="top-section {{isSearchBarFullyHidden ? 'top-hidden' : ''}}"
+    style="opacity: {{searchSectionOpacity}}; transform: translateY({{searchSectionTransform}}rpx);"
+  >
+    <!-- 标题 -->
+    <view class="title">专业的鸡蛋现货交易平台</view>
     
-  <!-- 搜索区域 -->
-  <view class="search-section {{searchSectionVisible ? 'search-visible' : 'search-hidden'}}">
-    <view class="search-bar">
-      <view class="search-input-wrapper">
-        <!-- 将地区选择器放在最左边 -->
-        <view class="region-selector" bindtap="toggleRegionPicker">
-          <text>{{selectedRegion || '全国'}}</text>
-          <text class="region-arrow">▼</text>
+    <!-- 搜索区域 -->
+    <view class="search-section">
+      <view class="search-bar">
+        <view class="search-input-wrapper">
+          <!-- 将地区选择器放在最左边 -->
+          <view class="region-selector" bindtap="toggleRegionPicker">
+            <text>{{selectedRegion || '全国'}}</text>
+            <text class="region-arrow">▼</text>
+          </view>
+          <!-- 搜索图标和输入框 -->
+          <text class="search-icon">🔍</text>
+          <input 
+            class="search-input" 
+            placeholder="搜索商品名称或地区" 
+            placeholder-class="search-placeholder"
+            value="{{searchKeyword}}"
+            bindinput="onSearchInput"
+          />
         </view>
-        <!-- 搜索图标和输入框 -->
-        <text class="search-icon">🔍</text>
-        <input 
-          class="search-input" 
-          placeholder="搜索商品名称或地区" 
-          placeholder-class="search-placeholder"
-          value="{{searchKeyword}}"
-          bindinput="onSearchInput"
-        />
+        <button class="search-button" bindtap="searchGoods">搜索</button>
       </view>
-      <button class="search-button" bindtap="searchGoods">搜索</button>
     </view>
   </view>
   
@@ -40,7 +46,6 @@
           {{item}}
         </view>
       </view>
-      <button class="confirm-region-btn" bindtap="confirmRegion">确定</button>
     </view>
   </view>
   
@@ -195,6 +200,13 @@
               </view>
             </view>
             
+            <!-- 无搜索结果提示 -->
+            <view wx:if="{{filteredGoods.length === 0 && !isLoading}}" class="empty-goods">
+              <text class="empty-icon">🔍</text>
+              <text class="empty-text">暂无相关商品</text>
+              <text class="empty-hint">试试调整搜索条件或地区筛选</text>
+            </view>
+            
             <!-- 正常商品列表 -->
             <view 
               class="waterfall-item" 
@@ -202,7 +214,7 @@
               wx:key="id" 
               data-item="{{item}}"
               bindtap="viewGoodsDetail"
-              wx:if="{{!item.isAd}}"
+              wx:if="{{!item.isAd && filteredGoods.length > 0}}"
             >
               <view class="product-card">
                 <view class="product-image-wrapper">
@@ -260,7 +272,7 @@
               wx:key="id" 
               data-item="{{item}}"
               bindtap="viewGoodsDetail"
-              wx:if="{{!item.isAd}}"
+              wx:if="{{!item.isAd && filteredGoods.length > 0}}"
             >
               <view class="product-card">
                 <view class="product-image-wrapper">

pages/index/index.wxss

@@ -19,50 +19,38 @@ page {
   background-color: #f8f8f8;
 }
 
-/* 标题样式 */
-.title {
-  font-size: 36rpx;
-  font-weight: bold;
-  margin: 20rpx;
-  color: #333;
-  text-align: center;
+/* 顶部搜索区域容器 */
+.top-section {
   flex-shrink: 0;
-  transition: all 0.3s ease;
+  padding: 10rpx 0;
+  margin-bottom: 20rpx;
+  overflow: hidden;
+  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
+  will-change: opacity, transform, padding, margin, max-height;
 }
 
-.title-hidden {
-  opacity: 0;
-  transform: translateY(-20rpx);
-  height: 0;
-  margin: 0;
+/* 顶部搜索区域完全隐藏状态 - 用于收缩高度 */
+.top-hidden {
+  max-height: 0;
   padding: 0;
-  overflow: hidden;
+  margin-bottom: 0;
+  pointer-events: none;
 }
 
-/* 搜索区域样式 */
-.search-section {
+/* 标题样式 */
+.title {
+  font-size: 36rpx;
+  font-weight: bold;
+  margin: 10rpx 20rpx;
+  color: #333;
+  text-align: center;
   flex-shrink: 0;
-  transition: all 0.3s ease;
-}
-
-.search-visible {
-  opacity: 1;
-  transform: translateY(0);
-  height: auto;
-}
-
-.search-hidden {
-  opacity: 0;
-  transform: translateY(-100%);
-  height: 0;
-  overflow: hidden;
 }
 
 /* 搜索区域样式 */
 .search-section {
   width: 100%;
-  margin: 0 20rpx 20rpx 20rpx;
-  flex: 0 1 auto;
+  margin: 0 30rpx 0 10rpx;
   box-sizing: border-box;
 }