To reverse a list in Flutter, you can simply use a function in Dart called reversed. The syntax to reverse lists in Flutter is:
<List variable>.reversed.toList(); //returns the reversed listRemember to add .toList() after reversed so that the function returns a List. Without .toList(), the function will return a Iterable. A simple example to reverse a list of integers is given below but you can use it with any List of predefined datatype.
List lst = new List();
lst = [1,2,3,4];
print(lst); //prints [1,2,3,4]
print(lst.reversed.toList()); //prints [4,3,2,1] 