B4A Library FirebaseAuth - Authenticate your users

This library requires B4A v6+.

It allows the users to sign in to your app with their Google account (more identity providers will be added in the future).

Like all Firebase services it is quite simple to integrate this service in your app.

1. Follow this tutorial and make sure to add the Firebase Auth manifest snippet: https://www.b4x.com/android/forum/threads/integrating-firebase-services.67692/

2. This service requires that the signing key SHA1 signature is set in the Firebase project settings:

You can find this value under Tools - Private Sign Key, in the signature field:

Initialize the FirebaseAuth object and call SignInWithGoogle to sign in. Note that the user will be signed in automatically when the program restarts.

Sub Process_Globals
   Private auth As FirebaseAuth
End Sub

Sub Globals
   Private lblName As Label
End Sub

Sub Activity_Create(FirstTime As Boolean)
   If FirstTime Then
     auth.Initialize("auth")
   End If
   Activity.LoadLayout("1")
   If auth.CurrentUser.IsInitialized Then Auth_SignedIn(auth.CurrentUser)
End Sub

Sub btnSignIn_Click
   auth.SignInWithGoogle
End Sub

Sub btnSignOut_Click
   auth.SignOutFromGoogle
   lblName.Text = "Goodbye!"
End Sub

Sub Auth_SignedIn (User As FirebaseUser)
   Log("SignedIn: " & User.DisplayName)
   lblName.Text = "Hello: " & User.DisplayName
End Sub

Next:
- Combine Google and Facebook: https://www.b4x.com/android/forum/t...seauth-to-support-facebook.67954/#post-430482
- Server verification of signed in users: https://www.b4x.com/android/forum/t...end-authentication-for-signed-in-users.68672/

FirebaseAuth is an internal library now. It is preinstalled with the IDE.

V2.01 is attached. It adds a SignError (Error As Exception) event.

 

[Rajesh Krishnan]

Hey Erel,
Following the steps uv given for the user authentication, on executing the firebase example gives an error telling package name doesnt match. But how would we get the package name without once running the code.

 

[Erel]

Hey Erel,

Please don't limit your questions to a single member.

You can change the package name under Project - Build Configurations.

 

[itgirl]

running the example using my own google-json and after changing the package name i get this error

** Service (starter) Create **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 339)
android.content.res.Resources$NotFoundException: String resource ID #0x0
    at android.content.res.Resources.getText(Resources.java:1334)
    at android.content.res.Resources.getString(Resources.java:1428)
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper.Initialize(FirebaseAuthWrapper.java:64)
    at natchcenter.com.refuni.main._activity_create(main.java:339)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
    at natchcenter.com.refuni.main.afterFirstLayout(main.java:102)
    at natchcenter.com.refuni.main.access$000(main.java:17)
    at natchcenter.com.refuni.main$WaitForLayout.run(main.java:80)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:145)
    at android.app.ActivityThread.main(ActivityThread.java:5951)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)

any one has an idea whats going on ?

with mainfest set to

<uses-sdk android:minSdkVersion="5" android:targetSdkVersion="25"/>

testing on Galaxy S4 with android 5

 

[Erel]

I don't recommend you to set the targetSdkVersion to 25. There might be side effects that you are unaware of.

It looks like a problem with google-services.json. Try to download it again.

 

[itgirl]

I don't recommend you to set the targetSdkVersion to 25. There might be side effects that you are unaware of.

It looks like a problem with google-services.json. Try to download it again.

actually it was 23 but i tried 25 to see if the error goes away , i tried to download google-services.json 3 times and the error still exists. by the way in the same project i have firebase FCM and firebase ads working like a charm just auth lib causes this error

auth.Initialize("auth")

.
also i tried uninstall and reinstall

 

[Erel]

1. Can you send me your google-services.json file to erel@basic4ppc.com?

2. Have you added the SHA-1 signature as explained in step #2 ?
https://www.b4x.com/android/forum/threads/firebaseauth-authenticate-your-users.67875/

 

[itgirl]

1. Can you send me your google-services.json file to erel@basic4ppc.com?

2. Have you added the SHA-1 signature as explained in step #2 ?
https://www.b4x.com/android/forum/threads/firebaseauth-authenticate-your-users.67875/

the file is sent,

and yeah i did add the SHA-1 signature

 

[Erel]

The json file downloaded is missing required fields.

It should include this field: "client_type": 3

Try to make a few changes in Firebase console and download a new json file.

If it doesn't help then try to create a new Firebase project.

 

[itgirl]

The json file downloaded is missing required fields.

It should include this field: "client_type": 3

Try to make a few changes in Firebase console and download a new json file.

If it doesn't help then try to create a new Firebase project.

Automated json file from firebase console is always buggy for me, changes to a project not always take effect in google-services.json but it always works after 2nd or 3rd download but with this auth didnt work even 4th download :/ can i edit the file manually and add the missing fields?

 

[Erel]

You cannot add it manually as the important value is missing. The client_type is only used to find it.

 

[itgirl]

You cannot add it manually as the important value is missing. The client_type is only used to find it.

Thank you so much Erel I'll try with the FireBase console again

 

[itgirl]

Confirmed , for further help any one whos facing the same issue as the one mentioned in #63 you MUST delete the whole project not the app and re create it in order to work , it's a bug reported many times in FireBase

Happy coding

 

[desof]

Why does this happen with Facebook that some emails are not displayed?

 

[Erel]

See the comment here: https://github.com/firebase/quickstart-android/issues/13#issuecomment-222818397

Check your settings. Based on that answer it can happen if the "Allow creation of multiple accounts with the same email address " option is set.

 

[syderbit]

Erel gave me the source of the lib so i can add them ;-)
I m working on it...


Will check to add this too

send me too ....
@Erel

 

[Erel]

The source code is attached.

 

[syderbit]

Thank you @Erel

 

[Intiwhiz]

Dear @Erel,

I have trouble while compile the program, it show picture below

Your assistance really appriciated

Thanks

 

[Erel]

Please start a new thread for this.

 

[somed3v3loper]

Phone sign-in method is now enabled .
Can we have a library or this one source code ?
Thanks