인프런 커뮤니티 질문&답변

안드로이드 스튜디오 에뮬레이터 실행 시,

E/OpenGLRenderer( 4274): Unable to match the desired swap behavior. 라는 에러가 뜹니다.
코드는 카카오 로그인 구현한 코드구요..
대체 왜 오류가 뜨는지 궁금합니다

import 'package:flutter/material.dart';
import 'package:kakao_flutter_sdk/kakao_flutter_sdk.dart';
import 'package:kakao_login/myhompage.dart';

void main() {
  KakaoSdk.init(nativeAppKey: 'e7a7bba0f8d93f336d1343d3f47222ae',
  );
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      routes: <String,WidgetBuilder>{
        '/' : (BuildContext ctx) => const MyHomePage(),
      }
    );
  }
}

import 'package:kakao_flutter_sdk_user/kakao_flutter_sdk_user.dart';
import 'login.dart';

class MainViewModel {
  final SocialLogin _socialLogin;
  bool isLogined = false;
  User? user;

  MainViewModel(this._socialLogin);

  Future login() async {
    isLogined = await _socialLogin.login();
    if(isLogined) {
      user = await UserApi.instance.me();
    }
  }

  Future logout() async {
    await _socialLogin.logout();
    isLogined = false;
    user = null;
  }
}

import 'package:flutter/material.dart';
import 'login.dart';
import 'mainview.dart';

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final viewModel = MainViewModel(KakaoLogin());

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('카카오 로그인'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Image.asset("assets/images/kakao_login_pic.png"),
            Text('${viewModel.isLogined}'),
            ElevatedButton(
                onPressed: () async {
                  await viewModel.login();
                  setState((){});
                },
                child: const Text('Login')
            ),
            ElevatedButton(
                onPressed: () async {
                  await viewModel.logout();
                  setState((){});
                },
                child: const Text('Logout')
            )
          ],
        ),
      ),
    );
  }
}

import 'package:kakao_flutter_sdk/kakao_flutter_sdk.dart';

abstract class SocialLogin {
  Future<bool> login();
  Future<bool> logout();
}

class KakaoLogin implements SocialLogin {
  @override
  Future<bool> login() async {
    try {
      //카카오톡이 설치되어있는지 확인
      bool isInstalled = await isKakaoTalkInstalled();
      if(isInstalled){
        try{
          //카카오톡으로 로그인
          await UserApi.instance.loginWithKakaoTalk();
          return true;
        } catch(error) {
          return false;
        }
      } else {
        try{
          //카카오톡 계정으로 로그인
          await UserApi.instance.loginWithKakaoAccount();
          return true;
        } catch(error) {
          return false;
        }
      }
    } catch(error) {
      return false;
    }
  }

  @override
  Future<bool> logout() async {
    try {
      //카카오톡과의 연결을 끊는다.
      await UserApi.instance.unlink();
      return true;
    } catch(error) {
      return false;
    }
  }
}