ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Text("Your Text"),
duration: Duration(milliseconds: 300),
));shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20.0)),
behavior: SnackBarBehavior.floating,ScaffoldMessenger.of(context).hideCurrentSnackBar();final snackBar = SnackBar(
content: const Text('Yay! A SnackBar!'),
action: SnackBarAction(
label: 'Undo',
onPressed: () {},
),
);
ScaffoldMessenger.of(context).showSnackBar(snackBar);final snackBar = SnackBar(
content: Text('Yay! A SnackBar!'),
action: SnackBarAction(
label: 'Undo',
onPressed: () {
// Some code to undo the change.
},
),
);
// Find the Scaffold in the widget tree and use
// it to show a SnackBar.
Scaffold.of(context).showSnackBar(snackBar);final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
void showInSnackBar(String value) {
_scaffoldKey.currentState.showSnackBar(new SnackBar(content: new Text(value)));
}