Dart: sort list of maps by double - flutter

Question

I have a list of maps in dart that I would like to sort.
The list I use:
List<myModel> myList;
(with maps inside):
(I created a model called 'myModel', so if I want to get the views: so I can use: myList[index].views to get the views of a map).
I tried this code:
setState(() {
filteredList = SplayTreeMap.from(
myList,
(a, b) => int.parse(myList[a].views)
.compareTo(int.parse(myList[b].views)));
});
(I want to sort the views, hight to low).
But I get this error:
error: A value of type 'SplayTreeMap' can't be assigned to a variable of type 'List<myModel>'.
What am I doing wrong?
Thanks in advance!
EDIT:
I 'query' my list this way.
filteredList = myList
.where((snapshot) => snapshot.views > 0)
.toList();
This works...
Is there a possibility to sort that way?

Answer 1

You cannot pass a List to SplayTreeMap.from(...).
See the documentation:
SplayTreeMap.from(Map other, [int compare(K key1 K key2), bool isValidKey(dynamic potentialKey)])
You need to use a Map or otherwise use SplayTreeMap.fromIterable(...) (documentation):
SplayTreeMap.fromIterable(Iterable iterable, {K key(dynamic element), V value(dynamic element), int compare(K key1 K key2), bool isValidKey(dynamic potentialKey)})
You could implement in the following way:
final filteredList =
SplayTreeMap.fromIterable(
myList,
key: (m) => m,
value: (m) => m.views,
compare: (a, b) =>
int.parse(a.views).compareTo(int.parse(b.views))
);
The above is an example, adjust it to your needs.
EDIT 2:
Given your edit, you could do something like:
final temp = List.from(myList);
temp.sort((a, b) => int.parse(a.views).compareTo(int.parse(b.views)));
filteredList = temp;