팔로우 버튼 누르면 +, - 하기 if문으로 팔로우 여부 확인 import 'package:flutter/cupertino.dart'; import 'package:flutter/material.dart'; import './style.dart' as style; import 'package:http/http.dart' as http; import 'dart:convert'; import 'package:flutter/rendering.dart'; import 'package:image_picker/image_picker.dart'; import 'dart:io'; import 'package:shared_preferences/shared_preferences.dart'; import 'dart:conv..