[FLUTTER] Opacity 클래스 : opacity 속성을 사용해 불투명도 표시하기

test_app.zip

0.13MB

▶ main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(TestApplication());
}

class TestApplication extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Test Application',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MainPage(),
    );
  }
}

class MainPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Test Application'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Opacity(
              opacity: 0.3,
              child: Container(
                color: Colors.red,
                width: 100,
                height: 100,
                padding: const EdgeInsets.all(8.0),
                margin: const EdgeInsets.all(8.0),
              ),
            ),
            Opacity(
              opacity: 0.6,
              child: Container(
                color: Colors.red,
                width: 100,
                height: 100,
                padding: const EdgeInsets.all(8.0),
                margin: const EdgeInsets.all(8.0),
              ),
            ),
            Opacity(
              opacity: 0.9,
              child: Container(
                color: Colors.red,
                width: 100,
                height: 100,
                padding: const EdgeInsets.all(8.0),
                margin: const EdgeInsets.all(8.0),
              ),
            ),
          ],
        ),
      ),
    );
  }
}