In Flutter, how can a child widget prevent the scrolling of its scrollable parent?

问题

I have a scrollable widget, say a ListView, which contains some special widget.

How can I prevent the scrollable to scroll when the user tries to scroll by starting to scroll on top of that widget?

In other words, I want that widget to be like a "hole" that prevents the scrollable to sense gestures there.

回答1:

Wrap the widget with GestureDetector and implement empty gesture functions in it.

GestureDetector(
   onVerticalDragUpdate: (_) {},
   child: YourWidget
),

来源：https://stackoverflow.com/questions/54929434/in-flutter-how-can-a-child-widget-prevent-the-scrolling-of-its-scrollable-paren