TextField (in flutter) getting filled with previously filled values (unintentionally) - flutter

Question

On click of floatingActionButton in main.dart file, I'm calling a dialog widget.
main.dart
late ShoppingListDialog dialog;
#override
void initState() {
dialog = ShoppingListDialog();
super.initState();
}
floatingActionButton: FloatingActionButton(
child: Icon(
Icons.add,
),
backgroundColor: Colors.pink,
onPressed: () {
showDialog(
context: context,
builder: (BuildContext context) => dialog.buildDialog(
context, ShoppingList(id: 0, name: '', priority: 0), true),
);
},
),
shopping_list_dialog.dart
class ShoppingListDialog {
final txtName = TextEditingController();
final txtPriority = TextEditingController();
Widget buildDialog(BuildContext context, ShoppingList list, bool isNew) {
DbHelper helper = DbHelper();
if (!isNew) {
txtName.text = list.name;
txtPriority.text = list.priority.toString();
}
return AlertDialog(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(30.0)),
title: Text((isNew) ? 'New shopping list' : 'Edit shopping list'),
content: SingleChildScrollView(
child: Column(
children: [
TextField(
controller: txtName,
onTap: () {},
decoration: InputDecoration(hintText: 'Shopping List Name')),
TextField(
controller: txtPriority,
keyboardType: TextInputType.number,
decoration:
InputDecoration(hintText: 'Shopping List Priority (1-3)'),
),
TextButton(
child: Text('Save Shopping List'),
onPressed: () {
list.name = txtName.text;
list.priority = int.parse(txtPriority.text);
helper.insertList(list);
Navigator.pop(context);
},
),
],
),
),
);
}
}
TextField is empty, the first time (showing the hint text). But the second time onwards, it gets filled with the last used values, while I intend them to be empty. Like in the image below, the second time when I hit on floatingActionButton to add something, it gets filled with "fruits"(values I had used previously).
TextField should start empty but it's getting filled with previous used values.

Answer 1

Here is a basic solution for you
TextButton(
child: Text('Save Shopping List'),
onPressed: () {
list.name = txtName.text;
list.priority = int.parse(txtPriority.text);
// Clear TE Controller
txtName.clear();
txtPriority.clear();
// Insert
helper.insertList(list);
Navigator.pop(context);
},
),