IconButton
A material design icon button.
Example
double _volume = 0.0; // ... Widget build(BuildContext context) { return Scaffold( body: Center( child: Column( mainAxisSize: MainAxisSize.min, children: <Widget>[ IconButton( icon: Icon(Icons.volume_up), tooltip: 'Increase volume by 10', onPressed: () { setState(() { _volume += 10; }); }, ), Text('Volume : $_volume') ], ), ), ); }