CODEWITHSUNDEEP
fluttergesture
Marcelo Glasberg
Marcelo Glasberg

Reputation: 30879

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

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.

Upvotes: 22

Views: 7746

Answers (3)

Andrey Gordeev
Andrey Gordeev

Reputation: 32449

If your child is WebView, GoogleMap or similar, you can make it to use EagerGestureRecognizer:

WebView(
  ...
  gestureRecognizers: {
    Factory<OneSequenceGestureRecognizer>(
      () => EagerGestureRecognizer(),
    ),
  },
),

Upvotes: 1

Baudouin Arbar&#233;tier
Baudouin Arbar&#233;tier

Reputation: 67

The answer is not satisfying because it prevents the child from receiving gestures (at least on native platforms).

Only acceptable solution I found -- in my case with a PageView -- is to disable the scroll gestures when the page with the gesturedetector child displays.

If anyone has a cleaner solution, please let us know.

Upvotes: 0

Willy
Willy

Reputation: 909

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

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

Upvotes: 14

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