Flutter 플러터 Progress bar 진행바 간단 구현 LinearProgressIndicator

코드 예시 import 'package:flutter/material.dart'; class MyWidget extends StatefulWidget { const MyWidget({Key? key}) : super(key: key); @override _MyWidgetState createState() => _MyWidgetState(); } class _MyWidgetState extends State { double _progressValue = 0.0; void _updateProgress() { setState(() { _progressValue += 0.1; if (_progressValue >= 1.0) { _progressValue = 0.0; } }); } @override Widget .....