flutter problem : How to convert this type of double from string?

Question

I want to convert sting to double , here my double is saperated by comma, So how to do it?

void main() {
  var myInt = int.parse('12345');
  assert(myInt is int);
  print(myInt); // 12345
  print(myInt.runtimeType);  // int
  
  
    var myDouble = double.parse('1,230.45');
  assert(myInt is double);
  print(myDouble); 
  print(myDouble.runtimeType); // double
}

Siddharth Mehra · Accepted Answer · 2022-05-03 12:43:10Z

3

You need to remove `,` first to parse it as double:

var myDouble = double.parse('1,230.45'.replaceAll(',', ''));

answered May 3, 2022 at 12:43

Siddharth Mehra

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nitishk72 · Accepted Answer · 2022-05-03 12:45:33Z

0

You need to remove the comma before parsing it. to remove comma you can use replaceAll on Stirng like this

void main() {
  var k1 = '1,230.45';
  var k2 = k1.replaceAll(',','');
  var myDouble = double.parse(k2);
  print(myDouble); 
  print(myDouble.runtimeType);
}

answered May 3, 2022 at 12:45

nitishk72

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Comments

jamesdlin · Accepted Answer · 2022-05-03 15:14:18Z

0

package:intl's NumberFormat also can parse numbers with commas as grouping separators:

import 'package:intl/intl.dart';

void main() {
  var numberFormat = NumberFormat('#,###.##');
  var myDouble = numberFormat.parse('1,230.45');
  print(myDouble); // Prints: 1230.45
  print(numberFormat.format(myDouble)); // Prints: 1,230.45
}

answered May 3, 2022 at 15:14

jamesdlin

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flutter problem : How to convert this type of double from string?

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You need to remove `,` first to parse it as double:

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You need to remove , first to parse it as double:

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You need to remove `,` first to parse it as double: