Flutter & Scaffold & multiple floatingActionButton
2024-09-07 19:24:32
Flutter & Scaffold & multiple floatingActionButton
demo
import 'package:flutter/material.dart';
void main() => runApp(App());
class App extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
// home: StateApp(),
home: Scaffold(
appBar: AppBar(
title: Text("appbar"),
backgroundColor: Colors.blueAccent[700],
),
body: Center(
child: StateApp(),
),
),
);
}
}
class StateApp extends StatefulWidget {
StateApp();
@override
createState() => _StateAppState();
}
class _StateAppState extends State<StateApp> {
int _counter = 0;
// String _randomColor = "#ff00ff";
Color _randomColor = Colors.lightGreen;
void _clearCounter() => setState(() {
// clear
_counter = 0;
_randomColor = Colors.lightGreen;
});
void _updateCounter() => setState(() {
_counter++;
_randomColor = (_counter % 2 == 0) ? Colors.redAccent : Colors.purple;
// random color
});
// _updateCounter() {
// setState(() {
// _counter++;
// });
// }
@override
Widget build(BuildContext context) {
return Scaffold(
// backgroundColor: Colors.lightGreen,
backgroundColor: _randomColor,
body: Center(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(23.0),
child: Text(
'You have pushed the button this many times:',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 18.0,
),
),
),
Center(
child: Text(
'$_counter',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 23.0,
),
),
),
],
),
),
floatingActionButton: Padding(
// padding: const EdgeInsets.all(8.0),
padding: const EdgeInsets.only(
top: 300.0,
),
child: Column(
children: <Widget>[
// SpeedDial
FloatingActionButton(
onPressed: () async {
// _counter++;
print("clicked = $_counter");
// setState(() {
// _counter++;
// });
_updateCounter();
},
child: Icon(Icons.add),
),
FloatingActionButton(
onPressed: () async {
print("clear = $_counter");
_clearCounter();
},
child: Icon(Icons.remove),
),
],
),
),
);
}
}
refs
https://gist.github.com/duhamelstuff/39a9c24ad1cd1ad376c34bc3aea2ef57#gistcomment-3348355
https://www.youtube.com/watch?v=1FmATI4rOBc
cupertino_icons: ^0.1.3
flutter_speed_dial: ^1.2.1
https://www.youtube.com/watch?v=p2xKPvNZeEA
https://medium.com/@RotBolt/test-cef30fcb5c54
xgqfrms 2012-2020
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