by @kodeazy

Flutter How to remove whitespaces from string without using any predefined function?

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  • In this blog we will be discussing on how to remove white spaces from string in flutter.

  • I had a string as below

    String str = "Dart remove empty space ";
  • To remove empty space from all occurences of the string folow below steps.
  • loop through the characters of the string and check for the white space.

  • If found white space at particular index replace the character as below syntax.

    for (int i = 0; i < str.length; i++) {
if (!str[i].contains(' ')) {
  stringAfterRemovingWhiteSpace = stringAfterRemovingWhiteSpace + "" + str[i];
}
}

  • Below is the sample example on how to remove white space

    import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
void main() {
String str = "Dart remove empty space ";
String stringAfterRemovingWhiteSpace = '';
for (int i = 0; i < str.length; i++) {
if (!str[i].contains(' ')) {
  stringAfterRemovingWhiteSpace = stringAfterRemovingWhiteSpace + "" + str[i];
}
}
print(stringAfterRemovingWhiteSpace);
}

    Output

    Dartremoveemptyspace