In flutter, how do I dynamically update an alert dialog's action list?

Issue

I am trying to dynamically update an alert dialog's action list when something takes place in the alert dialog. Essentially, by default the dialog has a "Cancel" action button. But once the user does something in the dialog, I want it to have a "Cancel" and an "Accept" button. I have tried using a StatefulBuilder, which is how I am getting the rest of the dialog to update state. However, it is not working with the action buttons.

I've tried conditionally rendering the button, as well as generating a list to use for the dialog actions, and using setState to add to the list when an action takes place. Neither works, although other state updates within the dialog's content work with the StatefulBuilder. The dialog opens with only the "Cancel" action, and will not update to include the "Accept" action as well.

await showDialog<void>(
  context: context,
  builder: (BuildContext context) {
    int? selectedRadio = 0;
    return AlertDialog(
      content: StatefulBuilder(
        builder: (BuildContext context, StateSetter setState) {
          return Column(
            mainAxisSize: MainAxisSize.min,
            children: List<Widget>.generate(4, (int index) {
              return Radio<int>(
                value: index,
                groupValue: selectedRadio,
                onChanged: (int? value) {
                  setState(() => selectedRadio = value);
                },
              );
            }),
            actions: <Widget>[
              TextButton(
                child: Text('Cancel'),
                onPressed: () {
                  Navigator.of(context).pop();
                },
              ),
              selectedRadio == 1 ? TextButton(
                child: Text('Accept'),
                onPressed: () {
                  Navigator.of(context).pop();
                },
              ) : SizedBox.Shrink(),
            ],
          );
        },
      ),
    );
  },
);

Solution

Try putting the AlertDialog inside the StatefulBuilder

return StatefulBuilder(
      builder: (context, setState) {
        return AlertDialog(

Answered By - Csaba Mihaly