Using Form in Alertdialog - flutter

Question

I want to create an object in body and use it in alertdialog, how should I do it? For example:
var form = Form(
);
********
return AlertDialog(
content: form,
),
The reason I want to do this is because when I try to use the buildForm structure outside the body it doesn't work. But I can't define it in the body because I want to use floating action button how can I solve it or is there a different way to solve it?
floatingActionButton: FloatingActionButton(
child: Icon(Icons.add),
tooltip: "New ToDo",
onPressed: () {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("New ToDo"),
content: Container(
child: Column(children: [
Form(
key: _formKey,
child: Column(children: [
buildForm(_controllerTitle, "Title")
],),
),
],),
),
actions: [
],
);
},
);
},
),

Answer 1

You can create a method buildForm that will take a TextEditingController and String
Widget buildForm(TextEditingController controller, String title) {
return Container(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(title), // or just use on input decoration
TextFormField(
controller: controller,
decoration: InputDecoration(),
),
],
),
);
}
Customize the way you want.
And can be use like
buildForm(_controllerTitle, "Title"),
class _EXTTEstState extends State<EXTTEst> {
Widget buildForm(TextEditingController controller, String title) {
return Container(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(title), // or just use on input decoration
TextFormField(
controller: controller,
decoration: InputDecoration(),
),
],
),
);
}
final _controllerTitle = TextEditingController();
#override
Widget build(BuildContext context) {
return Scaffold(
floatingActionButton: FloatingActionButton(
child: Icon(Icons.add),
tooltip: "New ToDo",
onPressed: () {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("New ToDo"),
content: Container(
child: Column(
children: [
Form(
// key: _formKey,
child: Column(
children: [
buildForm(_controllerTitle, "Title"),
],
),
),
],
),
),
actions: [],
);
},
);
},
),
);
}
}