How to prevent ripple effect on surrounding InkWell when tapped on InkWell inside

If you want a quick hack, check it out:

Container(
  width: 180,
  height: 120,
  child: Stack(
    children: <Widget>[
      Card(
        child: InkWell(
          onTap: () {},
        ),
      ),
      Center(
        child: RaisedButton(
          child: Text('Test'),
          onPressed: () {},
        ),
      )
    ],
  ),
)

try this out https://dartpad.dev/7ff7f5756d93db2d4ed6a4b9a6d75208. I used hack with wrapping in InkWell the widget you want to surround with parent InkWell