by @kodeazy

How to check A String is a number or not in flutter?

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  • In this blog we will discuss on how to check if string is number or not.
  • To chek if string is number or not we convert it into number.
  • After converstion if there is no exception then the given string is number. -int.parse is a function used to convert string to int.

  • Below is the example of converting string to number and checking for exception if the given string is number or not.

    void main() {

try {
String s1 = "10A";
int num = int.parse(s1);
print('Given String is a number');
} catch (e) {
print('Given String is not A Number');
}
}

    Output:

    Given String is not A Number