Answers for "dart button"

flutter raisedbutton example

RaisedButton(child: Text("Rock & Roll"),
                onPressed: _changeText,
                color: Colors.red,
                textColor: Colors.yellow,
                padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
                splashColor: Colors.grey,
              )

flutter button

FlatButton(
              color: Colors.red,
              splashColor: Colors.black12,
              onPressed: (){
              },
              child: Text(
                "Nouvelle Texte"
              ),
            ),

flutter button

TextButton(
onPressed: () {
print('I got clicked');
},
child: Text('Button'),
style: TextButton.styleFrom(
primary: Colors.white,
textStyle: TextStyle(fontSize: 20.0),
backgroundColor: Colors.red),
),

Button in flutter

OutlineButton(
  shape: StadiumBorder(),
  highlightedBorderColor: Colors.red,
  borderSide: BorderSide(
    width: 2,
    color: Colors.red
  ),
  onPressed: () { },
  child: Text('OutlineButton with custom shape and border'),
)

OutlinedButton(
  style: OutlinedButton.styleFrom(
    shape: StadiumBorder(),
    side: BorderSide(
      width: 2,
      color: Colors.red
    ),
  ),
  onPressed: () { },
  child: Text('OutlinedButton with custom shape and border'),
)