Is there a List class that implements ChangeNotifier? Basically if anything is added to the list or the list is rearranged it will call notifyListeners?
Asked
Active
Viewed 47 times
1 Answers
1
No. But here's one:
class ChangeNotifierList<T> with ListMixin<T>, ChangeNotifier {
ChangeNotifierList(this._internalList);
final List<T> _internalList;
@override
int get length => _internalList.length;
@override
T operator [](int index) {
return _internalList[index];
}
@override
void operator []=(int index, T value) {
_internalList[index] = value;
notifyListeners();
}
@override
set length(int newLength) {
_internalList.length = newLength;
notifyListeners();
}
}

Rémi Rousselet
- 256,336
- 79
- 519
- 432
-
And if you're worried about performance (since `ListMixin` can have poor performance for adding elements), you can do the same thing with `DelegatingList`, with a little more code. – spenster Aug 02 '19 at 18:44