Gesture detector around button

main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Assessment Documents Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        body: Center(
            child: GenericTappableWidget(
          onTap: () {
            print('parent ontap');
          },
          child: RaisedButton.icon(
            onPressed: () {},
            label: Text('Test'),
            icon: Icon(Icons.add),
          ),
        )),
      ),
    );
  }
}

class GenericTappableWidget extends StatelessWidget {
  final Widget child;
  final Function() onTap;

  GenericTappableWidget({@required this.child, @required this.onTap});

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
        child: child,
        onTap: () {
          print('tap');
          onTap();
        },
        onTapCancel: () {
          print('tapCancel');
        });
  }
}