From fd0dc45b7d3bbade4c9e88a21cbbc471508ff324 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=A3=9E=E6=B4=8B?=
 <15778543+xufeiyang6017@user.noreply.gitee.com>
Date: Mon, 29 Dec 2025 14:48:44 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E4=B8=8B=E6=BB=91=E8=87=AA?=
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---
 pages/index/index.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/pages/index/index.js b/pages/index/index.js
index b87be16..254fb01 100644
--- a/pages/index/index.js
+++ b/pages/index/index.js
@@ -1127,6 +1127,9 @@ Page({
     const threshold = 50;
     const backToTopThreshold = 300;
     
+    const lastScrollTop = this.data.lastScrollTop || 0;
+    const isScrollingDown = scrollTop > lastScrollTop;
+    
     let needUpdate = false;
     const updates = {
       lastScrollTop: scrollTop
@@ -1135,7 +1138,15 @@ Page({
     // 搜索框始终固定显示，不做隐藏处理
     
     // 侧边栏按钮显示逻辑
-    if (scrollTop <= threshold && this.data.sidebarBtnHidden) {
+    // 下滑时隐藏按钮（除非用户未手动隐藏过且在顶部）
+    if (isScrollingDown && scrollTop > threshold && !this.data.sidebarBtnHidden) {
+      updates.sidebarBtnHidden = true;
+      needUpdate = true;
+      wx.setStorageSync('sidebarBtnHidden', true);
+      wx.setStorageSync('userManuallyHidden', true);
+    }
+    // 上滑到顶部时显示按钮
+    else if (scrollTop <= threshold && this.data.sidebarBtnHidden && !this.data.userManuallyHidden) {
       updates.sidebarBtnHidden = false;
       needUpdate = true;
       wx.setStorageSync('sidebarBtnHidden', false);