Wsrtjtyk

I follow the following "how to add firebase ui auth" work flow to my app, and I have a single main activity that just changes a text view if a user is logged or not. this is how the code looks like:

public class MainActivity extends AppCompatActivity {



    private static final int RC_SIGN_IN = 123;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        createSignInIntent();



    }

    public void createSignInIntent() {

        // [START auth_fui_create_intent]

        // Choose authentication providers

        List<AuthUI.IdpConfig> providers = Arrays.asList(

                new AuthUI.IdpConfig.EmailBuilder().build());



        // Create and launch sign-in intent

        startActivityForResult(

                AuthUI.getInstance()

                        .createSignInIntentBuilder()

                        .setAvailableProviders(providers)

                        .build(),

                RC_SIGN_IN);

        // [END auth_fui_create_intent]

    }

    @Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);



        if (requestCode == RC_SIGN_IN) {

            IdpResponse response = IdpResponse.fromResultIntent(data);



            if (resultCode == RESULT_OK) {

                TextView tv = (TextView)findViewById(R.id.tv);

                tv.setText("Signed");

                FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();

                // ...

            } 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.

                                    TextView tv = (TextView)findViewById(R.id.tv);

                tv.setText("Not Signed In");

            }

        }

    }

}

The app crashes and the Logcat is empty!

I've seen this when the libraries of firebase and firebaseUI are not compatible.

In the manifest file check if your firebaseUI correspond to the right one.
This is an example for the firebaseUI 4.2.1

dependencies {

...

implementation 'com.firebaseui:firebase-ui:4.2.1'

implementation 'com.google.firebase:firebase-core:16.0.5'

implementation 'com.google.firebase:firebase-auth:16.0.5'

implementation 'com.google.firebase:firebase-database:16.0.5'

}

for a complete list of compatible libriaries of FirebaseUI
check this link Firebase Compatibility