Problems using Firebase Authentication

Discuss
1

On my login screen, I only have one button to log in with my Google account.
Blocks I used:

Login:
The home screen checks whether the user is logged in. If so, they are taken to the main screen.

Once logged in (Google Sign In), the Login Success block displays the user’s Get ID Token, and the Got ID Token section redirects them to the main screen:

This image shows a block-based programming script for a Firebase authentication flow, including user sign-in, Google login, token retrieval, and navigation to a main screen named 'tela_principal.' (Captioned by AI)
This image shows a block-based programming script for a Firebase authentication flow, including user sign-in, Google login, token retrieval, and navigation to a main screen named 'tela_principal.' (Captioned by AI)591×553 25.5 KB

Main Screen:
On the main screen when it boots, I check again to see if the user is logged in. If they are, I get the Get Current User message. If not, it returns to the login screen.

The image shows a block-based code snippet that checks if a user is signed in using Firebase Authentication, retrieves the current user if signed in, and otherwise opens a login screen while closing the current screen. (Captioned by AI)
The image shows a block-based code snippet that checks if a user is signed in using Firebase Authentication, retrieves the current user if signed in, and otherwise opens a login screen while closing the current screen. (Captioned by AI)545×187 10.1 KB

Create a global variable uid and in Current User Success I obtained the Get Id Token, then I associated the global uid with the User ID, lbl_nome with get name and img_perfil with get profile Picture

The image shows a block-based programming script that initializes a global variable 'uid', then upon successful Firebase user authentication, retrieves user details including ID, name, email, phone number, and profile picture, sets the 'uid' variable to the user ID, and updates label text and an image component with the user's... (Captioned by AI)
The image shows a block-based programming script that initializes a global variable 'uid', then upon successful Firebase user authentication, retrieves user details including ID, name, email, phone number, and profile picture, sets the 'uid' variable to the user ID, and updates label text and an image component with the user's... (Captioned by AI)503×269 14.5 KB

In Firebase_Authentication Got Id Token follows my project Bucket and firebase Token for registration purposes.

A block-based code snippet sets the Firebase Database project bucket path dynamically using a user's global unique ID and updates the Firebase token with the ID token obtained from Firebase Authentication. (Captioned by AI)
A block-based code snippet sets the Firebase Database project bucket path dynamically using a user's global unique ID and updates the Firebase token with the ID token obtained from Firebase Authentication. (Captioned by AI)726×222 12.3 KB

I downloaded the APK. When I click the Google button, it closes automatically. If I log in a second time, it does the same thing.
I checked on Firebase and the accounts were authenticated

A screenshot of an authentication management interface showing a list of users with details such as identifier, creation date, last login, and user UID, with options for filtering and adding users. (Captioned by AI)
A screenshot of an authentication management interface showing a list of users with details such as identifier, creation date, last login, and user UID, with options for filtering and adding users. (Captioned by AI)1530×745 63 KB

Are my codes correct? If not, where is the error?

2

You mean that after clicking Sign with Google button the app closed without getting the Google account?

3

That’s right. When you click the button and select your Google account, even if you log in a second time, it closes by itself.

4

Then try removing close screen blocks just open screen normally

A block of code checks if a user is signed in using Firebase Authentication and either retrieves the current user or closes the screen and opens the login screen. (Captioned by AI)
A block of code checks if a user is signed in using Firebase Authentication and either retrieves the current user or closes the screen and opens the login screen. (Captioned by AI)545×187 10.4 KB

5

If you are closing screen 1 then that’s explain why your app is crashing if you are in screen 1 then only use { open other screen name } block

1 Like
6

My dears, I did as you informed and it continues to be the same.

The image shows a block-based programming interface with code blocks for Firebase authentication, handling login initialization, Google sign-in button click, login success event, and token retrieval to navigate to another screen named 'tela_principal'. (Captioned by AI)
The image shows a block-based programming interface with code blocks for Firebase authentication, handling login initialization, Google sign-in button click, login success event, and token retrieval to navigate to another screen named 'tela_principal'. (Captioned by AI)605×581 23.8 KB

image
image535×160 8.68 KB

7

Send me your aia file via PM let me see, if you don’t mind

8

It’s normal Firebase behavior, after logging in once, the account stays saved on the phone, and you don’t need to sign in/up again, but instead check if the user is already logged in and retrieve the data if so.

9

Hi Fallen_Media,
what you’re saying isn’t necessarily true, you can also close Screen 1 as long as you correctly switch to another one.

11

Just some minutes

12

Have you enabled Google Sign In firebase Authenticate?

13

Since the Google logo is visible, I’d say yes.

14

Something isn’t right with the firebase or Json file

blocks (29)

WhatsApp Image 2025-09-02 at 12.16.51
WhatsApp Image 2025-09-02 at 12.16.51485×1080 15.3 KB

Can re-create your firebase project? The login for me not working

16

Delete your Json from this thread please. Fast as you can

17

I mean can you Recreate your project again for sign up?

18

It could still be obtained from the AIA

EDIT: I have removed them

19

I replaced the json using my own firebase project and it works

20

Ooooowoh that’s fast :rofl::rofl:

Anyway @Carlos_Alberto_Leonel do crosscheck in your firebase project, or Create it again

21

Guys, I deleted the project and created another one.
Follow the steps:
1 - After naming it, I added the app to Android.

A form interface for registering an Android app with fields for the package name, optional app nickname, and optional SHA-1 debug signing certificate. (Captioned by AI)
A form interface for registering an Android app with fields for the package name, optional app nickname, and optional SHA-1 debug signing certificate. (Captioned by AI)955×649 26.8 KB

I registered and downloaded the json file.

2 - After that I went to Creation and Authentication:
When I activated it, a message appeared to download the updated Json

And yet it keeps closing the screen if you go to the main screen

The image shows a block-based programming interface with code for Firebase Authentication, handling user login status, Google Sign-In, and navigation between screens. (Captioned by AI)
The image shows a block-based programming interface with code for Firebase Authentication, handling user login status, Google Sign-In, and navigation between screens. (Captioned by AI)1245×447 27.9 KB

I’m just about to give up on this.
If I send the AiA to you without the bank information, can you help me?

22

But is the account being created correctly?