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[개발 환경 설정]​개발 툴 : AndroidStudio개발 언어 : Dart [소스 코드]​import 'package:flutter/material.dart';import 'package:flutter/rendering.dart';import 'package:flutter/services.dart';import 'package:flutter_project/second.dart';import 'package:url_launcher/url_launcher.dart';import 'package:shared_preferences/shared_preferences.dart';import 'dart:developer';import 'dart:core';import 'dart:io';import 'dart:co..