'I am getting this error in my Todo List App by Flutter
hey guys I am making a Todo list app in Flutter , I create a void function which called "checkBoxCallBack" and want to use it in a Checkbox onChanged property and i got this error that i wrote down , i trained by angela yu
error :
Closure call with mismatched arguments: function '_TaskTileState.checkBoxCallBack'
Receiver: Closure: (bool) => void from Function 'checkBoxCallBack':.
Tried calling: _TaskTileState.checkBoxCallBack()
Found: _TaskTileState.checkBoxCallBack(bool) => void
my code is :
class TaskTile extends StatefulWidget {
const TaskTile({
Key? key,
}) : super(key: key);
@override
State<TaskTile> createState() => _TaskTileState();
}
class _TaskTileState extends State<TaskTile> {
bool isChecked = false;
void checkBoxCallBack(bool checkboxState) {
setState(() {
isChecked = checkboxState;
});
}
@override
Widget build(BuildContext context) {
return ListTile(
title: Text(
'This is a task',
style: TextStyle(
decoration: isChecked ? TextDecoration.lineThrough : null),
),
trailing: TaskCheckBox(
checkBoxState: isChecked,
toggleCheckboxState: checkBoxCallBack,
),
);
}
}
class TaskCheckBox extends StatelessWidget {
final bool checkBoxState;
final Function toggleCheckboxState;
TaskCheckBox(
{required this.checkBoxState, required this.toggleCheckboxState});
@override
Widget build(BuildContext context) {
return Checkbox(
value: checkBoxState,
onChanged: toggleCheckboxState(),
);
}
}
}
Solution 1:[1]
I found my problem
here is the fixed code :
Checkbox(
value: checkBoxState,
onChanged: (bool? value) => toggleCheckboxState(value!),
);
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | ArVaN903 |
