Tamaño del botón plano de aleteo
// JZ
SizedBox(
width: double.infinity, // <-- match_parent
child: RaisedButton(...)
)
Healthy Hummingbird
// JZ
SizedBox(
width: double.infinity, // <-- match_parent
child: RaisedButton(...)
)SizedBox(
width: 100, // <-- Your width
height: 50, // <-- Your height
child: ElevatedButton(...)
)