flutter I want to convert NumberFormat form to double - flutter

Question

Below is the code where the error occurs.
I want to convert [NumberFormat][1] form to double. What should I do?
I want to display it on the screen with the currency symbol, and get the result as a double .
Sample source:
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
class ProductEditor extends StatefulWidget {
const ProductEditor({Key? key}) : super(key: key);
#override
_ProductEditorState createState() => _ProductEditorState();
}
class _ProductEditorState extends State<ProductEditor> {
final NumberFormat euNumFormat =
NumberFormat.currency(locale: 'eu_EU', symbol: '€');
TextEditingController _ctrPrice = TextEditingController();
double _price = 25000.00;
#override
void initState() {
super.initState();
_ctrPrice.text = euNumFormat.format(_price); //
}
#override
Widget build(BuildContext context) {
return Container(
width: 500,
height: 300,
child: TextField(
controller: _ctrPrice,
onSubmitted: (String price) {
setState(() {
final double value = double.tryParse(_ctrPrice.text
.substring(0, _ctrPrice.text.length - 2)
.replaceAll(',', '')) ??
0.0;
print('price:${_ctrPrice.value.toString()} ${value}');
final formattedPrice = euNumFormat.format(value);
_ctrPrice.value = TextEditingValue(
text: formattedPrice,
selection: TextSelection.collapsed(offset: formattedPrice.length),
);
});
},
),
);
}
}

Answer 1

You can create a substring by removing symbol and , from there, then parse it.
final double retailPrice = double.tryParse(
_ctrPrice.substring(0, _ctrPrice.length - 2).replaceAll(",", ''),
) ??
0.0;
This solution only work on specific number format('eu_EU').