set width of flat button flutter code example
Example: raisedbutton full width flutter
FractionallySizedBox(
widthFactor: 1, // means 100%, you can change this to 0.8 (80%)
child: RaisedButton.icon(
onPressed: () {
print(comment);
},
label: Text('Edit Comment', style: TextStyle(color: Colors.white)),
icon: Icon(Icons.check, color: Colors.white),
),
),