ocr

src/pages/devicesSearch/ocrSearch.nvue

@@ -132,62 +132,77 @@ export default {
         maId: ""
       },
       codeData: {},
-      optionList: []
+      optionList: [],
+      cameraReady: false
     }
   },
 
-  onLoad(options) {
-    // 监听OCR识别结果
-    uni.$on('ocrResult', this.handleOcrResult);
+  onShow() {
+    // 更安全的 deviceready 监听
+    if (window.cordova) {
+      this.onDeviceReady();
+    } else {
+      document.addEventListener('deviceready', this.onDeviceReady, false);
+    }
   },
-
-  onUnload() {
-    // 移除事件监听
-    uni.$off('ocrResult', this.handleOcrResult);
-    // 确保相机被停止
-    this.stopCamera();
+  beforeDestroy() {
+    if (this.onDeviceReady) {
+      document.removeEventListener('deviceready', this.onDeviceReady);
+    }
   },
-
   methods: {
+    onDeviceReady() {
+      console.log('Cordova 插件已加载');
+      this.cameraReady = true;
+    },
     // 检查相机权限
     async checkCameraPermission() {
       return new Promise((resolve, reject) => {
+        // 检查插件是否可用
+        if (!window.cordova || !cordova.plugins?.permissions) {
+          reject(new Error('权限插件不可用'));
+          return;
+        }
+
         const permissions = cordova.plugins.permissions;
-        permissions.checkPermission(permissions.CAMERA,
+
+        permissions.checkPermission(
+            permissions.CAMERA,
+            (status) => {
+              if (status.hasPermission) {
+                resolve(true); // 已有权限
+              } else {
+                // 请求权限
+                permissions.requestPermission(
+                    permissions.CAMERA,
                     (status) => {
                       if (status.hasPermission) {
                         resolve(true);
                       } else {
-                permissions.requestPermission(permissions.CAMERA,
-                    () => resolve(true),
-                    () => reject(new Error('相机权限被拒绝'))
+                        reject(new Error('用户拒绝了相机权限'));
+                      }
+                    },
+                    (error) => reject(new Error('请求权限失败: ' + error))
                 );
               }
             },
-            (error) => reject(new Error('权限检查失败'))
+            (error) => reject(new Error('检查权限失败: ' + error))
         );
       });
     },
 
     // 打开相机
     async openCamera() {
+      if (!this.cameraReady) {
+        await uni.showToast({ title: '请等待插件初始化', icon: 'none' });
+        return;
+      }
+
       try {
-        // 检查权限
-        await this.checkCameraPermission();
-
-        // 显示相机界面
-        this.showCamera = true;
-
-        // 等待DOM更新后初始化相机
-        await this.$nextTick();
+        await this.$nextTick(); // 确保 UI 更新
         await this.initCamera();
       } catch (error) {
-        console.error('打开相机失败:', error);
-        uni.showToast({
-          title: error.message || '相机启动失败',
-          icon: 'none'
-        });
-        this.showCamera = false;
+        console.error('相机启动失败:', error);
       }
     },