How To Easily Generate Dart Random String – Easy Flutter Guide

In this tutorial, we’ll learn how to properly generate Dart random string by using practical Dart code example.

Introduction: Dart Random String

It specifies the process through which a string of random characters will be returned. We’ll also allow the code to return a specific length of Dart random string.

Implementing Dart Random String (Easy Example Code)

We’ll now implement a function which will generate and return a random string of alphabets and numbers everytime its called. See below steps:

Step 1: import dart:math

import 'dart:math';   // in order to use random function

Step 2: Define the Function which will Generate Random String

String generateRandomString(int lengthOfString){
    final random = Random();
    const allChars='AaBbCcDdlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1EeFfGgHhIiJjKkL234567890';

   // below statement will generate a random string of length using the characters 
   // and length provided to it
    final randomString = List.generate(lengthOfString, 
                          (index) => allChars[random.nextInt(allChars.length)]).join();
    return randomString;    // return the generated string
}

Step 3: Called this Function

print(generateRandomString(10));
print(generateRandomString(5));
print(generateRandomString(15));
String randomStringReturned= generateRandomString(6); // can store the returned value in string variable
print(randomStringReturned);

Output

sZAPvahLG8
NTneR
Xy8tkxBIbNBDSkd
GMScOT