After upgrade Flutter 3.3.0 RaisedButton showing error-CodePudding

Just now I upgraded to Flutter 3.3.0

The method 'FlatButton' isn't defined for the type '_PickerFieldState'. (Documentation) Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'.

CodePudding user response：

FlatButton is deprecated, use TextButton instead. Like this:

TextButton(onPressed: (){}, child: Text('Tap')),

CodePudding user response：

You can check

Instead of RaisedButton, we need to use ElevatedButton

To have similar ui we can use this style

final ButtonStyle raisedButtonStyle = ElevatedButton.styleFrom(
  onPrimary: Colors.black87,
  primary: Colors.grey[300],
  minimumSize: Size(88, 36),
  padding: EdgeInsets.symmetric(horizontal: 16),
  shape: const RoundedRectangleBorder(
    borderRadius: BorderRadius.all(Radius.circular(2)),
  ),
);
ElevatedButton(
  style: raisedButtonStyle,
  onPressed: () { },
  child: Text('Looks like a RaisedButton'),
)

Ref and find more about restoring the original button visuals