flutter/modules/module_home/lib/view/SingleTouchWidget.dart

import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';


class SingleTouchRecognizer extends StatelessWidget {
   Widget? child;
   SingleTouchRecognizer({this.child});
   @override
   Widget build(BuildContext context) {
     return RawGestureDetector(
       gestures: <Type, GestureRecognizerFactory>{
         _SingleTouchRecognizer: GestureRecognizerFactoryWithHandlers<_SingleTouchRecognizer>(
               () => _SingleTouchRecognizer(),
               (_SingleTouchRecognizer instance) {},
         ),
       },
       child: child,
     );
   }
}
class _SingleTouchRecognizer extends OneSequenceGestureRecognizer {


  int _p = 0;
  @override
  void addAllowedPointer(PointerDownEvent event) {
    //first register the current pointer so that related events will be handled by this recognizer
    startTrackingPointer(event.pointer);
    //ignore event if another event is already in progress
    if (_p == 0) {
      resolve(GestureDisposition.rejected);
      _p = event.pointer;
    } else {
      resolve(GestureDisposition.accepted);
    }
  }

  @override
  // TODO: implement debugDescription
  String get debugDescription => "";

  @override
  void didStopTrackingLastPointer(int pointer) {
    // TODO: implement didStopTrackingLastPointer
  }

  @override
  void handleEvent(PointerEvent event) {
    if (!event.down && event.pointer == _p) {
      _p = 0;
    }
  }
}