From 1f0d537c80ffbd5c4245369189aa5d2fe6be9303 Mon Sep 17 00:00:00 2001
From: zhoulinf <2507241354@qq.com>
Date: Tue, 4 Aug 2026 17:45:47 +0800
Subject: [PATCH] =?UTF-8?q?CRM=5F26-08-05#story#9126,=E8=BD=A6=E8=BE=86?=
 =?UTF-8?q?=E7=AE=A1=E7=90=86=E3=80=81=E6=9C=8D=E5=8A=A1=E5=95=86=E7=AE=A1?=
 =?UTF-8?q?=E7=90=86=E7=B3=BB=E7=BB=9F=E9=9C=80=E6=B1=82?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/views/index/vehicleAdd.vue | 34 +++++++++++++++++++++++-----------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/src/views/index/vehicleAdd.vue b/src/views/index/vehicleAdd.vue
index 789b3067..a7c8f43f 100644
--- a/src/views/index/vehicleAdd.vue
+++ b/src/views/index/vehicleAdd.vue
@@ -944,15 +944,29 @@ export default {
       return compressedFile;
     },
     isCameraSupported() {   // 是否支持 getUserMedia（不支持则降级系统选择器）
-      return !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia)
+      return !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia) && window.isSecureContext !== false
     },
-    onLicenseSlotClick(type) {   // 行驶证三槽位点击拦截：支持相机进引导页，不支持降级原系统选择器
-      if (this.isCameraSupported()) {
-        console.log('navigator.mediaDevices.getUserMedia', navigator.mediaDevices.getUserMedia)
-        this.cameraGuideType = type
-        this.cameraGuideVisible = true
-      } else {
+    async onLicenseSlotClick(type) {   // 行驶证三槽位点击拦截：前置探测相机，可用才进引导页，否则直接降级系统选择器
+      this.cameraGuideType = type
+      if (!this.isCameraSupported()) {
+        // 不支持 getUserMedia（如 iOS 微信、非 HTTPS、老 WebView）：直接调系统选择器
         this.triggerNativeUpload(type)
+        return
+      }
+      try {
+        // 前置真实探测相机可用性，避免进入拍摄引导页后黑屏；拿到流立即释放
+        const stream = await navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment' }, audio: false })
+        stream.getTracks().forEach(t => t.stop())
+        this.cameraGuideVisible = true
+      } catch (e) {
+        console.error('probe getUserMedia error:', e)
+        if (e && (e.name === 'NotAllowedError' || e.name === 'SecurityError')) {
+          // 权限被拒：弹框询问（重试/从相册选择）
+          this.onCameraFallback()
+        } else {
+          // 无摄像头、被占用等其他异常：直接降级系统选择器
+          this.triggerNativeUpload(type)
+        }
       }
     },
     triggerNativeUpload(type) {  // 主动触发对应 uploader 的原生文件选择
@@ -994,10 +1008,8 @@ export default {
         cancelButtonText: '从相册选择',
         confirmButtonColor: '#354D93',
       }).then(() => {
-        // 重新打开拍摄引导（等弹层关闭状态先刷新，确保 visible 变化被组件感知）
-        this.$nextTick(() => {
-          this.cameraGuideVisible = true
-        })
+        // 重新走前置探测，探测通过才打开拍摄引导
+        this.onLicenseSlotClick(this.cameraGuideType)
       }).catch(() => {
         // 降级为系统选择器
         this.triggerNativeUpload(this.cameraGuideType)