48 lines
1020 B
Plaintext
48 lines
1020 B
Plaintext
void main() {
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runApp(MyApp());
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}
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class MyApp extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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appBar: AppBar(
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title: Text('Color Changer'),
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),
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body: ColorChanger(),
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),
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);
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}
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}
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class ColorChanger extends StatefulWidget {
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@override
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_ColorChangerState createState() => _ColorChangerState();
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}
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class _ColorChangerState extends State<ColorChanger> {
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Color _backgroundColor = Colors.white;
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void changeBackgroundColor() {
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setState(() {
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_backgroundColor = Color(Random().nextInt(0xFFFFFFFF));
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});
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}
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTap: () => changeBackgroundColor(),
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child: Container(
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color: _backgroundColor,
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child: Center(
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child: Text(
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'Tap to Change Color',
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style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
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),
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),
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),
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);
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}
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} |