ScrollController attached to multiple scroll views

YVONNE CHIN answered on June 6, 2022 Popularity 8/10 Helpfulness 1/10

answer ScrollController attached to multiple scroll views

ScrollController attached to multiple scroll views

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_hideButtonController.addListener(() {
      if (_hideButtonController.positions.any((pos) => pos.userScrollDirection ==
          ScrollDirection.reverse)) {
        if (_isVisible == true) {
          /* only set when the previous state is false
             * Less widget rebuilds
             */
          print("**** $_isVisible up"); //Move IO away from setState
          setState(() {
            _isVisible = false;
          });
        }
      } else {
        if (_hideButtonController.positions.any((pos) => pos.userScrollDirection ==
            ScrollDirection.forward)) {
          if (_isVisible == false) {
            setState(() {
              _isVisible = true;
            });
          }
        }
      }
    });

Popularity 8/10 Helpfulness 1/10 Language whatever

Source: flutterhq.com

Tags: scroll scrollcontroller views whatever

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Contributed on Jun 06 2022

YVONNE CHIN

0 Answers Avg Quality 2/10

ScrollController attached to multiple scroll views

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ScrollController attached to multiple scroll views

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