feat: 调整

src/pages/index/components/module/AnswerComponent/index.vue

@@ -124,7 +124,8 @@ const lookDetailAction = () => {
     } catch (e) {}
   });
 
-  uni.navigateTo({ url: `/pages/long-answer/index?streamId=${encodeURIComponent(streamId)}` });
+  // 传递 finished 参数，完成状态下不自动滚到底部
+  uni.navigateTo({ url: `/pages/long-answer/index?streamId=${encodeURIComponent(streamId)}&finished=${props.finish ? '1' : '0'}` });
 }
 
 </script>

src/pages/long-answer/index.vue

@@ -49,14 +49,23 @@ const SCROLL_THRESHOLD = 150; // px
 const userInteracting = ref(false);
 let interactionTimer = null;
 
+/** 是否已完成（从 URL 参数判断），完成状态下不初始初自动滚到底部 */
+let isFinishedOnInit = false;
+
 /** ✅ 防抖 */
 let scrollTimer = null;
 
 const measureScrollViewHeight = () => {
   try {
-    const sys = uni.getSystemInfoSync() || {};
-    // 使用窗口高度作为 scroll-view 可视高度的近似，兼容小程序环境
-    scrollViewHeight.value = sys.windowHeight || 0;
+    // 使用 uni.createSelectorQuery 获取 scroll-view 的准确高度
+    uni.createSelectorQuery()
+      .select(".chat-scroll")
+      .boundingClientRect((rect) => {
+        if (rect && rect.height) {
+          scrollViewHeight.value = rect.height;
+        }
+      })
+      .exec();
   } catch (e) { }
 }
 
@@ -69,31 +78,36 @@ const computeTitle = (text = "") => {
 const onScroll = (e) => {
   try {
     const { scrollTop = 0, scrollHeight = 0 } = e.detail || {};
-    // 标记为用户主动滚动，短时内不触发自动滚动
-    userInteracting.value = true;
-    clearTimeout(interactionTimer);
-    interactionTimer = setTimeout(() => (userInteracting.value = false), 1200);
-
-    // 更新距离底部的判断（使用 windowHeight 作为近似）
-    const distanceToBottom = scrollHeight - (scrollTop + (scrollViewHeight.value || uni.getSystemInfoSync().windowHeight || 0));
-    isNearBottom.value = distanceToBottom <= SCROLL_THRESHOLD;
+    
+    // 计算距离底部的距离（使用准确的 scroll-view 高度）
+    const viewHeight = scrollViewHeight.value;
+    const distanceToBottom = scrollHeight - scrollTop - viewHeight;
+    
+    // 判断是否在底部附近（允许 SCROLL_THRESHOLD 的误差范围）
+    // 注意：只更新 isNearBottom，不在滚动时强制改变 userInteracting
+    const atBottom = distanceToBottom <= SCROLL_THRESHOLD;
+    isNearBottom.value = atBottom;
   } catch (e) { }
 }
 
 const onTouchStart = () => {
+  // 触摸开始时，立即标记为用户交互状态
   userInteracting.value = true;
   clearTimeout(interactionTimer);
 }
 
 const onTouchEnd = () => {
+  // 触摸结束后延迟一段时间再取消交互状态
+  // 这样即使用户快速滚动，也不会被中途打断
   clearTimeout(interactionTimer);
   interactionTimer = setTimeout(() => {
     userInteracting.value = false;
-  }, 800);
+  }, 600);
 }
 
 const scrollToBottom = () => {
   if (scrollTimer) return;
+  if (isFinishedOnInit) return;
 
   scrollTimer = setTimeout(() => {
     // ❗关键：强制触发滚动（小程序必须这样）
@@ -118,7 +132,17 @@ const scrollToBottom = () => {
   }, 100);
 }
 
-onLoad(({ message = "", streamId = "" }) => {
+onLoad(({ message = "", streamId = "", finished = "0" }) => {
+  // 记录初始完成状态
+  isFinishedOnInit = finished === "1";
+
+  console.log("LongAnswer onLoad with params:", { message, streamId, finished });
+
+  // 初次测量 scroll-view 高度
+  nextTick(() => {
+    measureScrollViewHeight();
+  });
+
   if (streamId) {
     // ✅ 流式数据
     unsubscribe = StreamManager.subscribe(
@@ -128,10 +152,15 @@ onLoad(({ message = "", streamId = "" }) => {
         title.value = computeTitle(answerText.value);
 
         nextTick(() => {
-          // 仅在用户处于接近底部时自动滚动，避免每次流式更新都打断用户阅读
+          // 每次接收数据都重新测量高度（content size 可能变化，比如加载图）
+          measureScrollViewHeight();
+          
+          // 流式完成时强制滚动到底部
           if (finished) {
             scrollToBottom();
-          } else if (isNearBottom.value) {
+          } 
+          // 流式中的数据更新：只有在用户未交互且接近底部时才自动滚动
+          else if (!userInteracting.value && isNearBottom.value) {
             scrollToBottom();
           }
         });
@@ -143,13 +172,10 @@ onLoad(({ message = "", streamId = "" }) => {
     title.value = computeTitle(answerText.value);
 
     nextTick(() => {
-      // 初始非流式情况仍保持自动滚动
+      // 只有在初始化为非完成状态时才自动滚到底部
       scrollToBottom();
     });
   }
-
-  // 初次测量 scroll-view 高度
-  nextTick(() => measureScrollViewHeight());
 });
 
 onUnload(() => {