How to iterate over List in Flutter

Introduction

In Flutter/Dart, we may wish to iterate over List. In this post, we'll learn how to do it.

Check the following articles if you are looking for more information about how to: filter, sort, reverse, update, and create a List in Flutter/Dart.

How to iterate over List in Flutter

To iterate over a list in Flutter we can use forEach(), every(), for loop with the index, or a simple for-each loop.

Iterate over a list using forEach() method and lambda expression

var list = ['zero', 'one', 'two', 'three'];
list.forEach((listItem) => print(listItem));

Iterate over a list using iterator

var list = ['zero', 'one', 'two', 'three'];

var iter = list.iterator; // get the iterator
while (iter.moveNext()) { // while there is next element
  print(iter.current);
}

Iterate over a list using every() method

var list = ['zero', 'one', 'two', 'three'];

list.every((item) { // print every item in a list
  print(item);
  return true;
});

Iterate over a list using a simple loop

var list = ['zero', 'one', 'two', 'three'];

for (var item in list) {
  print(item);
}

Iterate over a list using a loop with an item index

var list = ['zero', 'one', 'two', 'three'];

for (var i = 0; i < list.length; i++) {
  print(list[i]); // print element at a specific index
}

Conclusion

In this article, we presented several ways to iterate over a list in Flutter/Dart.