2 Ways to Get a Random Item from a List in Dart (and Flutter)

Updated: February 5, 2023 By: Snowball Post a comment

When developing apps with Flutter and Dart, there might be cases where you want to retrieve a random item from a given list (for example, an online shop wants to give a random gift to their customer; or a teacher wants to choose a random question to test students). There is no built-in function or method specifically designed for this task. However, we can easily solve it in more than one way with a few lines of code.

Method #1

In this method, we will randomly change the position of the items in the list by using the shuffle() method, then get the first one.


// kindacode.com
void main() {
  List<String> colors = ['red', 'green', 'blue', 'yellow', 'orange'];

  var randomColor = colors[0];

Method #2

Here’s what we’ll do:

  • Use Random.nextInt() to generate a random index number (in the range from 0 to list.length – 1)
  • Use the random index to retrieve the corresponding list element


// kindacode.com
import 'dart:math';
void main() {
  var choices = ['a', 'b', 'c', 'd', 'e'];
  int randomIndex = Random().nextInt(choices.length);
  var randomChoice = choices[randomIndex];

The output can be ‘a’, ‘b’, ‘c’, ‘d’, or ‘e’.

You can explore more interesting stuff related to the randomness in Flutter through the following articles:

You can also tour around our Flutter topic page or Dart topic page for the most recent tutorials and examples.

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