Plutogrid show dialog after iconbutton pressed - flutter

Question

how can I show an dialog widget after a click on an Iconbutton in a plutogrid cell?
This is my code in der renderer for the plutogrid cell:
return Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
children: [
IconButton(
icon: Icon(
Auswahl,
),
onPressed: () {}, => here I want to show a dialog widged...
iconSize: 18,
color: Colors.black,
),
]);
And here is the code for the dialog:
void _selectDialog() async {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text('Add Info'),
content: setupSelectDialoagContainer(),
);
});
}
I tried to call _selectDialog(), but I got the error:
The instance member '_selectDialog' can't be accessed in an initializer.

Answer 1

I don't know why you faced this error, this is my code showing the same dialog as yours and it's working.
Here's the code:
class Demo extends StatefulWidget {
const Demo({super.key});
#override
State<Demo> createState() => _DemoState();
}
class _DemoState extends State<Demo> {
void _selectDialog() async {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text('Add Info'),
// content: setupSelectDialoagContainer(),
);
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: ListView(
children: [
Center(
child: IconButton(
onPressed: () {
_selectDialog();
},
icon: Icon(Icons.abc),
),
)
],
),
);
}
}