Update QRCodeStyleView to improve logo handling by ensuring the selected logo is set as a background image only if it has a valid image, enhancing the visual presentation of QR codes.

MyQrCode/Views/QRCodeStyleView.swift

@@ -51,10 +51,11 @@ struct QRCodeStyleView: View {
         // 设置眼睛形状
         d.design.shape.eye = selectedEyeType.eyeShape
         
-        // 如果有选择的Logo，设置背景图片
-        if let selectedLogo = selectedLogo {
-            // 这里可以添加Logo图片设置
-            // d.design.style.background = QRCode.FillStyle.Image(selectedLogo.image)
+        // 如果有选择的Logo，设置Logo
+        if let selectedLogo = selectedLogo,
+           let logoImage = selectedLogo.image {
+            // 设置Logo作为背景图片
+            d.logoTemplate = QRCode.LogoTemplate.CircleCenter(image: logoImage.cgImage!)
         }
         
         return d