fix：增加非空调试

lib/upload_image/look_images_widget.dart

@@ -29,6 +29,7 @@ class LookImagesTool {
           return LookImagesWidget(
               listData: listData,
               currentPage: currentPage,
+              onCallBack: onCallBack,
               oSSAccessKeyId: oSSAccessKeyId,
               policy: policy,
               callback: callback,
@@ -241,7 +242,9 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
                   onTap: () async {
                     Uint8List? imageFile = await editImage(url: listData[currentPage]);
                     String? url = await uint8ListToTempFile(imageFile ?? Uint8List(0));
+                    if(widget.onCallBack != null){
                       widget.onCallBack!(url??'');
+                    }
                   },
                   child: Icon(Icons.edit, color: Colors.white))),
           //图片张数指示器