StateLess 小部件中的 Flutter ListView

Question

as I learned , in StateLessWidget we can't call any thing like setState to rebuild the widget tree and so on.

but when we scroll a listVeiw , the position and ... will change. but as we in StatelessWidget , I don't know why it is possible to change the State of STL because the ListView has its own offset state and it can change and reflected in User Interface .

Answer 1

ListView is a stateful widget. Just because you wrap it in a stateless widget does not mean it also becomes stateless.

That's the whole magic, you can have many stateful and stateless widgets wrapped in stateful and stateless widgets...