fixed multiple code scan issue from image path

lib/src/ui/reader_widget.dart

@@ -458,15 +458,25 @@ class _ReaderWidgetState extends State<ReaderWidget>
     final XFile? file =
         await ImagePicker().pickImage(source: ImageSource.gallery);
     if (file != null) {
-      final Code result = await zx.readBarcodeImagePath(
+      final DecodeParams params = DecodeParams(
-        file,
-        params: DecodeParams(
         format: widget.codeFormat,
         tryHarder: widget.tryHarder,
         tryInverted: widget.tryInverted,
         isMultiScan: widget.isMultiScan,
-        ),
       );
+      if (widget.isMultiScan) {
+        final Codes result =
+            await zx.readBarcodesImagePath(file, params: params);
+        if (result.codes.isNotEmpty) {
+          results = result;
+          widget.onMultiScan?.call(result);
+          setState(() {});
+        } else {
+          results = Codes();
+          widget.onMultiScanFailure?.call(result);
+        }
+      } else {
+        final Code result = await zx.readBarcodeImagePath(file, params: params);
         if (result.isValid) {
           widget.onScan?.call(result);
         } else {
@@ -474,6 +484,7 @@ class _ReaderWidgetState extends State<ReaderWidget>
         }
       }
     }
+  }
 
   void _onCameraButtonTapped() {
     if (cameras.isEmpty || controller == null) {