fix(ios): 修复摄像头方向在 iOS 13+ 上的兼容性问题

添加辅助方法获取当前界面方向并转换为摄像头方向，兼容 iOS 13+ 的新 API

.gitignore

@@ -0,0 +1 @@
+.history/

src/ios/CDVBarcodeScanner.mm

@@ -784,21 +784,58 @@ prompt:(NSString *)prompt {
 
 //--------------------------------------------------------------------------
 - (void)viewDidAppear:(BOOL)animated {
+    [super viewDidAppear:animated]; // 建议先调用 super，符合规范
+    
     // setup capture preview layer
     AVCaptureVideoPreviewLayer* previewLayer = self.processor.previewLayer;
     previewLayer.frame = self.view.bounds;
     previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
 
     if ([previewLayer.connection isVideoOrientationSupported]) {
-        [previewLayer.connection setVideoOrientation:[[UIApplication sharedApplication] statusBarOrientation]];
+        // 1. 获取当前界面方向（兼容 iOS 13+）
+        UIInterfaceOrientation interfaceOrientation = [self currentInterfaceOrientation];
+        // 2. 转换为相机需要的方向类型
+        AVCaptureVideoOrientation captureOrientation = [self convertToCaptureOrientation:interfaceOrientation];
+        // 3. 设置方向
+        [previewLayer.connection setVideoOrientation:captureOrientation];
     }
 
     [self.view.layer insertSublayer:previewLayer below:[[self.view.layer sublayers] objectAtIndex:0]];
 
     [self.view addSubview:[self buildOverlayView]];
     [self startCapturing];
+}
 
-    [super viewDidAppear:animated];
+#pragma mark - 辅助方法：获取当前界面方向（兼容 iOS 13+）
+- (UIInterfaceOrientation)currentInterfaceOrientation {
+    if (@available(iOS 13.0, *)) {
+        // iOS 13+ 用 windowScene 获取方向（statusBarOrientation 已废弃）
+        UIWindowScene *windowScene = [UIApplication sharedApplication].windows.firstObject.windowScene;
+        return windowScene.interfaceOrientation;
+    } else {
+        // iOS 12 及以下用 statusBarOrientation
+        return [UIApplication sharedApplication].statusBarOrientation;
+    }
+}
+
+#pragma mark - 辅助方法：将 UIInterfaceOrientation 转为 AVCaptureVideoOrientation
+- (AVCaptureVideoOrientation)convertToCaptureOrientation:(UIInterfaceOrientation)interfaceOrientation {
+    switch (interfaceOrientation) {
+        case UIInterfaceOrientationPortrait:
+            return AVCaptureVideoOrientationPortrait;
+        case UIInterfaceOrientationPortraitUpsideDown:
+            return AVCaptureVideoOrientationPortraitUpsideDown;
+        case UIInterfaceOrientationLandscapeLeft:
+            // 注意：界面左横屏对应相机右横屏（镜像关系）
+            return AVCaptureVideoOrientationLandscapeRight;
+        case UIInterfaceOrientationLandscapeRight:
+            // 注意：界面右横屏对应相机左横屏（镜像关系）
+            return AVCaptureVideoOrientationLandscapeLeft;
+        case UIInterfaceOrientationUnknown:
+        default:
+            // 未知方向默认竖屏
+            return AVCaptureVideoOrientationPortrait;
+    }
 }
 
 //--------------------------------------------------------------------------