Firebase chat 만들어보기 #2

1.Android Studio에서 테스트 project 생성
   kr.co.goms.app.chat 생성

2.의존성 추가

implementation platform('com.google.firebase:firebase-bom:32.7.1')
implementation 'com.google.firebase:firebase-analytics'

implementation 'com.google.firebase:firebase-auth:22.3.1'  // Use the latest version available
implementation 'com.google.android.gms:play-services-auth:20.7.0'
implementation 'com.firebaseui:firebase-ui-auth:7.2.0'

3.소스코드
 1)MyApplication 추가

@Override
public void onCreate() {
    super.onCreate();
    Log.d(LOG_TAG, "################################## MyApplication::onCreate() start! ##########################");

    mMyApplication = this;

    FirebaseApp.initializeApp(this);
}

 2)MainActivity에 구글이메일 인증 호출
 - signInLauncher 추가

private final ActivityResultLauncher<Intent> signInLauncher = registerForActivityResult(
        new FirebaseAuthUIActivityResultContract(),
        new ActivityResultCallback<FirebaseAuthUIAuthenticationResult>() {
            @Override
            public void onActivityResult(FirebaseAuthUIAuthenticationResult result) {
                onSignInResult(result);
            }
        }
);

- signInLauncher 호출

List<AuthUI.IdpConfig> providers = Arrays.asList(
        //new AuthUI.IdpConfig.EmailBuilder().build(),
        //new AuthUI.IdpConfig.PhoneBuilder().build(),
        //new AuthUI.IdpConfig.FacebookBuilder().build(),
        //new AuthUI.IdpConfig.TwitterBuilder().build(),
        new AuthUI.IdpConfig.GoogleBuilder().build());

// Create and launch sign-in intent
Intent signInIntent_01 = AuthUI.getInstance()
        .createSignInIntentBuilder()
        .setAvailableProviders(providers)
        //.setLogo(R.drawable.my_great_logo)      // Set logo drawable
        //.setTheme(R.style.MySuperAppTheme)      // Set theme
        .build();
signInLauncher.launch(signInIntent_01);

private void onSignInResult(FirebaseAuthUIAuthenticationResult result) {
    IdpResponse response = result.getIdpResponse();
    if (result.getResultCode() == RESULT_OK) {
        // Successfully signed in
        FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
        Log.d("AUTH", "FirebaseUser : " + user.getEmail());
        // ...
    } else {
        // Sign in failed. If response is null the user canceled the
        // sign-in flow using the back button. Otherwise check
        // response.getError().getErrorCode() and handle the error.
        // ...
    }
}

4.구글이메일 인증 실패 > Firebase에 sha-1 추가해야 함.
 1)개발 sha-1 확인
keytool -list -v -keystore C:\Users\오마로\.android\debug.keystore -alias androiddebugkey -storepass android -keypass android
 2)Release는 실제 apk 등록 후 구글스토어에서 확인한 후에 해당 키를 등록 할 것

5.정상 인증 완료
  1)Log
     - AUTH                    kr.co.goms.app.chat                  D  FirebaseUser : omaro753762@gmail.com

다음 글은 Realtime Database 설정