修复小程序讲解页面返回回退

src/pages/exhibit/detail.vue

@@ -159,7 +159,7 @@
 
 <script setup lang="ts">
 import { computed, onBeforeUnmount, ref, watch } from 'vue'
-import { onHide, onLoad, onUnload } from '@dcloudio/uni-app'
+import { onBackPress, onHide, onLoad, onUnload } from '@dcloudio/uni-app'
 import GuidePageFrame from '@/components/navigation/GuidePageFrame.vue'
 import GuideFeedbackState from '@/components/navigation/GuideFeedbackState.vue'
 import GuideLoadingState from '@/components/navigation/GuideLoadingState.vue'
@@ -188,6 +188,7 @@ import {
 } from '@/utils/placeholders'
 import { normalizeSameOriginPublicUrl } from '@/utils/publicUrl'
 import { isEmbeddedInWechatMiniProgram } from '@/utils/hostEnvironment'
+import { returnToWechatMiniProgram } from '@/services/WechatMiniProgramBridgeService'
 import { normalizeGuideAudioLanguage } from '@/data/adapters/guideStopInfoAdapter'
 import { explainGuideStopListUrl } from '@/utils/explainNavigation'
 import {
@@ -355,6 +356,7 @@ const isCurrentDetailAudioTarget = computed(() => {
   )
 })
 let detailAudioClosedOnExit = false
+let returningToMiniProgram = false
 
 const closeDetailAudioOnExit = () => {
   if (detailAudioClosedOnExit || !isCurrentDetailAudioTarget.value) return
@@ -945,15 +947,42 @@ const fallbackToExplainObjectList = () => {
   })
 }
 
-const returnToExplainObjectList = () => {
-  closeDetailAudioOnExit()
-  uni.navigateBack({
-    delta: 1,
-    fail: fallbackToExplainObjectList
-  })
+const cameFromExplainObjectList = () => {
+  const pages = getCurrentPages()
+  const previousPage = pages[pages.length - 2] as { route?: string } | undefined
+  return previousPage?.route === 'pages/explain/guide-stop-list'
 }
 
-const handleBack = returnToExplainObjectList
+const returnToExplainObjectList = async () => {
+  closeDetailAudioOnExit()
+  if (cameFromExplainObjectList()) {
+    uni.navigateBack({
+      delta: 1,
+      fail: fallbackToExplainObjectList
+    })
+    return
+  }
+
+  if (isEmbeddedInWechatMiniProgram()) {
+    if (returningToMiniProgram) return
+    returningToMiniProgram = true
+    const result = await returnToWechatMiniProgram()
+    if (result.status === 'returned') return
+
+    returningToMiniProgram = false
+    uni.showToast({ title: '返回小程序失败，请重试', icon: 'none' })
+    return
+  }
+
+  fallbackToExplainObjectList()
+}
+
+const handleBack = () => { void returnToExplainObjectList() }
+
+onBackPress(() => {
+  void returnToExplainObjectList()
+  return true
+})
 </script>
 
 <style scoped lang="scss">