I am struggling to pass arguments to a component in flutter.
The sending Widget has the code:
onTap: () => Navigator.of(context).pushNamed(ImageDisplay.routeName, arguments:{‘file’,’test’}),
The receiving widget has:
final Map<String,String> args = ModalRoute.of(context)!.settings.arguments as Map<String,String>;
The error is:
Exception has occurred.
_CastError (type ‘_CompactLinkedHashSet’ is not a subtype of type ‘Map<String, String>’ in type cast)
Fluter version is:
Flutter 2.10.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 7e9793dee1 (6 months ago) • 2022-03-02 11:23:12 -0600
Engine • revision bd539267b4
Tools • Dart 2.16.1 • DevTools 2.9.2
I am following from https://docs.flutter.dev/cookbook/navigation/navigate-with-arguments
>Solution :
You are passing a Set and not a Map.
This
{'file','test'}
is a Set with two elements.
I believe this is the map you actually wanted:
{'file':'test'}