修复部分问题

lib/src/qrcode_withlogo.dart

@@ -95,7 +95,7 @@ class _QRCodeWithLogoState extends State<QRCodeWithLogo> {
 
   Future<ui.Image> _loadOverlayImage() async {
     final completer = Completer<ui.Image>();
-    final byteData = await rootBundle.load('assets/images/4.0x/flyinsono.png');
+    final byteData = await rootBundle.load('images/flyinsono.png');
     ui.decodeImageFromList(byteData.buffer.asUint8List(), completer.complete);
     return completer.future;
   }

pubspec.yaml

@@ -39,3 +39,5 @@ dev_dependencies:
 
 flutter:
   uses-material-design: false
+  assets:
+    - assets/images/flyinsono.png