合入小程序修改内容

banban-mini/src/pages/bind/index.scss

@@ -27,19 +27,39 @@
 
 .bind-header {
   padding: 80px 32px 32px;
+  position: relative;
   text-align: center;
 
+  .back-btn {
+    position: absolute;
+    left: 32px;
+    top: 80px;
+    display: flex;
+    align-items: center;
+    padding: 12px 18px;
+    border-radius: 999px;
+    background: #FFFFFF;
+    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+  }
+
+  .back-icon {
+    width: 28px;
+    height: 28px;
+    margin-right: 10px;
+  }
+
+  .back-text {
+    font-size: 26px;
+    color: #1A1A1A;
+    font-weight: 500;
+  }
+
   .title {
     font-size: 44px;
     font-weight: 700;
     color: #1A1A1A;
     display: block;
-    margin-bottom: 12px;
-  }
-
-  .subtitle {
-    font-size: 28px;
-    color: #666666;
+    padding: 0 120px;
   }
 }
 

banban-mini/src/pages/bind/index.tsx

@@ -116,6 +116,14 @@ export default function Bind() {
     Taro.reLaunch({ url: '/pages/device/index' })
   }
 
+  const handleBack = () => {
+    if (getCurrentPages().length > 1) {
+      Taro.navigateBack()
+      return
+    }
+    Taro.switchTab({ url: '/pages/device/index' })
+  }
+
   const stopPolling = () => {
     if (pollingRef.current) {
       clearTimeout(pollingRef.current)
@@ -123,10 +131,10 @@ export default function Bind() {
     }
   }
 
-  const schedulePoll = () => {
+  const schedulePoll = (nextBindToken?: string) => {
     stopPolling()
     pollingRef.current = setTimeout(() => {
-      void pollBindSession()
+      void pollBindSession(nextBindToken)
     }, 1500)
   }
 
@@ -138,17 +146,18 @@ export default function Bind() {
     setBindHint('')
   }
 
-  const pollBindSession = async () => {
-    if (!bindToken) return
+  const pollBindSession = async (nextBindToken?: string) => {
+    const activeBindToken = (nextBindToken || bindToken).trim()
+    if (!activeBindToken) return
 
     try {
-      const session = await getNFCBindSession(bindToken)
+      const session = await getNFCBindSession(activeBindToken)
       setBindStatus(session.status)
       setCardUUID(session.card_uuid || '')
 
       if (session.status === SESSION_STATUS_PENDING) {
         setBindHint('已发送绑卡指令，请拿自己的卡去设备上贴一下')
-        schedulePoll()
+        schedulePoll(activeBindToken)
         return
       }
 
@@ -303,7 +312,7 @@ export default function Bind() {
       setBindToken(session.bind_token)
       setBindStatus(session.status)
       setBindHint('已发送绑卡指令，请去设备上贴自己的卡')
-      schedulePoll()
+      schedulePoll(session.bind_token)
       Taro.showToast({ title: '请去设备上贴卡', icon: 'none' })
     } catch (error: any) {
       console.error('[bind] submit failed:', error)
@@ -331,12 +340,11 @@ export default function Bind() {
   return (
     <View className='bind-page'>
       <View className='bind-header'>
+        <View className='back-btn' onClick={handleBack}>
+          <Image className='back-icon' src={require('../../assets/tab-icons/arrow-left.png')} mode='aspectFit' />
+          <Text className='back-text'>返回</Text>
+        </View>
         <Text className='title'>{isPendingBinding ? '补全绑定' : '扫码贴卡绑定设备'}</Text>
-        <Text className='subtitle'>
-          {isPendingBinding
-            ? '当前设备已存在待补全关系，请先补充儿童资料'
-            : '先选择儿童，再扫码设备，系统会下发绑卡指令，随后去设备上贴卡确认'}
-        </Text>
       </View>
 
       <View className='scan-area'>