Created
July 7, 2020 15:13
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import 'package:flutter/material.dart'; | |
import 'package:flutter/widgets.dart'; | |
class CounterWidget extends StatelessWidget { | |
int _counter = 0; //The class is immutable so this instance field should be final. | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
body: Center( | |
child: Column( | |
crossAxisAlignment: CrossAxisAlignment.center, | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: [ | |
Text(_counter.toString()), | |
RaisedButton( | |
onPressed: () { | |
_counter++; // Will not increment because there is no internal state. | |
}, | |
child: Text('Press me'), | |
) | |
]), | |
), | |
); | |
} | |
} |
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