Official Tutorial - Authentication with Google Play Games

This link is outdated, it gives error 404

 

The repo for the Google Play Games plugin for Unity:

https://github.com/playgameservices/play-games-plugin-for-unity

"NOTICE: This version of the plugin no longer supports iOS. Google Play games services for iOS is deprecated, and is not likely to function as expected. Do not use Google Play games services for iOS in new apps. See the deprecation announcement blog post for more details."

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Hi, thanks for the step by step guide. It is really helpful to clarify some ambiguities in the official documentation, such as not explicitly saying that you have to create a web credential.

I have a doubt. My project is open sourced. In the Unity Editor Setup Google Play Games section's steps my appId and client Id got saved in ../ProjectSettings/GooglePlayGameSettings.txt file (see attached image).

1. What are the consequences of leaving these fields public?
2. How can I avoid such consequences? if they exist

Thanks in advance and again for the guide.

 

I spent more than a week before I realized that the problem was in the proguard-user.txt file

Unity version: 2019.4
Google Mobile Ads v7.1.0
Google Play Games v10.12
Target platform: Android

If you are using the "Custom Proguard File" option you must add the following lines to your proguard-user.txt file

-keep class com.google.android.gms.games.PlayGames { *; }
-keep class com.google.android.gms.games.leaderboard.** { *; }
-keep class com.google.android.gms.games.snapshot.** { *; }
-keep class com.google.android.gms.games.achievement.** { *; }
-keep class com.google.android.gms.games.event.** { *; }
-keep class com.google.android.gms.games.stats.** { *; }
-keep class com.google.android.gms.games.video.** { *; }
-keep class com.google.android.gms.games.* { *; }
-keep class com.google.android.gms.common.api.ResultCallback { *; }
-keep class com.google.android.gms.signin.** { *; }
-keep class com.google.android.gms.dynamic.** { *; }
-keep class com.google.android.gms.dynamite.** { *; }
-keep class com.google.android.gms.tasks.** { *; }
-keep class com.google.android.gms.security.** { *; }
-keep class com.google.android.gms.base.** { *; }
-keep class com.google.android.gms.actions.** { *; }
-keep class com.google.games.bridge.** { *; }
-keep class com.google.android.gms.common.ConnectionResult { *; }
-keep class com.google.android.gms.common.GooglePlayServicesUtil { *; }
-keep class com.google.android.gms.common.api.** { *; }
-keep class com.google.android.gms.common.data.DataBufferUtils { *; }
-keep class com.google.android.gms.games.quest.** { *; }
-keep class com.google.android.gms.nearby.** { *; }

Links
https://github.com/playgameservices/play-games-plugin-for-unity/blob/master/scripts/proguard.txt
https://stackoverflow.com/questions/61013678/google-play-games-service-in-unity-doesnt-authenticate

 

Hey thanks for the guide, I tried it but when I copy paste the SHA1 from my custom keystore that I use when building my game, I have an error on the SHA1

It's really odd because the SHA1 I get from my .keystore seems very long, if I chop it down the sha-1 gets approved but I'm 100% sure the authentication will fail.
Do you know what causes this and how to fix it ?
edit: otherwise my debug process is very very long I have to publish the app in an internal track in order to test it :/

 

Oh ! You are probably right since I created it a long time ago ! Thanks I'll try that

 

I retried and I have the same error.

I don't know what I'm missing
my game is com.unscripted.crapette so I put unscripted in my organization name.

What should I use to make it work ?

 

What is odd is that it's supposed to be the app upload key in google play store and when I go check it out
my sha1 in google play store is the MD5 when I type the command
and my sha256 is my sha1

 

I tried to use the MD5 when using keytool (that appears as the SHA1 in google APP-Integrity) and I have a sign in failed as I expected
(whereas when I upload using internal app sharing the sign in works because the sha1 is valid I guess)

 

it seems to work with the MD5 from keytool as the SHA1, which is odd, might be a fluke

 

it's external testing by default I can't select internal testing

 

Dunno if other have the same problem but it doesn't fully work with minify release ticked
https://github.com/playgameservices/play-games-plugin-for-unity/issues/3092
I had to untick it to solve the issue, is that ok to not use minify or is this a concern ?

 

I don't know if it's me but I can load the leaderboardUI but I can't post a score or load scores using Social.Active or PlaygamesPlatform.Instance

Code (CSharp):

1. 2023/04/22 13:39:38.412 32247 32291 Error Unity at _Scripts._4FrameworksAndDrivers.GameStateController+<>c.b__19_6 (GooglePlayGames.BasicApi.LeaderboardScoreData data) [0x00000] in <00000000000000000000000000000000>:0

I'm at the point of using the unity leaderboard beta and developing the UI myself
(which seems like a nice service too)

 

I made it work finally but there is a design problem for sure. When the user has no scores it crashes so you have to handle that (post a 0 score or something)

 

It stopped working for no reasons, the score doesn't update, when I load scores it takes the previous score (for example I'm at 4 points and it returns 3 ) If I had to do it again, I'd implement my own

 

Sorry about that I just understood it was about authent and not GPGS, I won't bother you . I won't create a thread since I'll do my own (minimalistic) version of the leaderboard, it's not worth it imo to use GPGS for that

 

Is there absolutely no way for me to enable google authentication for a windows build?

 

I got a 403 Not Authorized error on the Authentication step. I have re-done it twice (including removing the credentials and keystore and recreated a new one) from the beginning and it still doesn't work. Am I missing something?

 

Turns out I can do the Authentication step from Unity Dashboard and it worked. Probably a bug from the unity package plugin that blocked me from proceeding

 

Sorry again. I have encountered another issues with authenticating. I am using the GPManager class and the authentication results failure. Here is the log attached. What am I missing here? I have added myself as a tester on play console but nothing seems to change. Thank you in advance!

 

I just spent several days fighting this exact problem I was seeing in my logs. In my case, I had to add a second Android credential in the Google Play Console.

1. There is one that corresponds with the SHA Fingerprint for any APKs I build and test on my local hardware using my local keystore.
2. There is a second *different* credential that corresponds with the SHA Fingerprint that Google uses when it re-signs your uploaded apks/aabs in the console.

You can check if you're using Google's app signing in the Google Play Console->Release->App integrity and select the App signing tab. The "App signing key certificate" is the one used to distribute your build on Google Play. The "Upload key certificate" is the one you use locally for your dev builds, i.e. what the apks/aabs you upload to the console are originally signed with (which is then stripped and the Google one is applied instead before distributing it).

So that got me past the

ERROR: Returning an error code

message, and I was able to see the little visual sliding overlay in my app confirming the GP user was authenticated. However, I immediately got a different error in my logs, so on to the next mystery...

TL;DR: If you're using Google's app signing feature (which everyone is these days), and want to see GPGS work on local dev devices as well as testing devices and production devices, you need TWO Android credentials AND the Game server credential.

It would be really great if the tutorial was updated with this critical info.

(Side Note: This is my 5th or 6th game using GPGS... EVERY single time it's a massive PITA to get this working. Don't understand how it keeps getting more complicated every time I push a new title out >< )

Also if anyone from Google/Unity SDK collab is paying attention to this, it would be just super duper helpful to return an error a little more informative than:

Code (CSharp):

1. namespace GooglePlayGames.BasicApi
2. {
3.     public enum SignInStatus
4.     {
5.         /// <summary>The operation was successful.</summary>
6.         Success,
7.  
8.         /// <summary>An internal error occurred.</summary>
9.         InternalError,
10.  
11.         /// <summary>The sign in was canceled.</summary>
12.         Canceled,
13.     }
14. }

Like, if I would have known the reason for the auth failure was a mismatched fingerprint in the Android credential, I wouldn't have burned 5 working days just stabbing in the dark until something worked.

 

Error :
Exception: Failed
GPManager.Start () (at Assets/Scriptes/GPManager.cs:23)

 

With the most simple and mundane use of the Google Play Services... wait, Google Play GAMES, to get access to the app's leaderboards, do we still need the v11.01 and need to:

1. install the Unity Authentication package?
2. create BOTH an Android OAuth AND a Game Server credential?
3. use the "client secret" too?

Do we need a new OAuth for both of them if for example we have changed the app's keys (which is the uploading key, not the one created by Google once they receive the APK/AAB)?

Is the Game Server credential related to what appeared in some documents as a Web Application authentication?

Also, once an Android credential is created, it doesn't seem possible to display the options as seen below:

 

Thank you @SebT_Unity! I see drive.app data not under Google Play Game Services. Screen shot issue?

 

Great, thats work.

One more advice - checking your file Manifest in project.
Check string package - there should be your package name (me helpful it)

 

How can we turn off the automatic user authentication? For example, i ONLY want the Play Games sign in to show when I call PlayGamesPlatform.Instance.ManuallyAuthenticate.

I DO NOT want the automatic authentication to bring up a dialog for the user when the app starts. This causes friction. I'm trying to use the Unity anonymous login according to your own best practices, and I can't do that when PlayGamesPlatform brings up the sign in dialog on app start.

EDIT: Looking through the code, it's possible it doesn't bring it up until the first call of PlayGamesPlatform.Instance, since that's when the SDK is initialized. Doing some testing.

 

Could someone please clean and update the instruction?
1. Some things does not appear when I follow instruction (e.g. as @Starbox showed above, I see no dialog with scopes to choose from)
2. I have no understanding what is being done and why. For example, there is instruction to create Android OAuth client, then, without any information, there is instruction to create Web app OAuth client. Why we need two of them (do we??), which one is for what.
3. I literally stumbled upon this page after trying old instructions, so probably I have some things not set correctly at some of the stages. And I have no idea how to check them and fix them.

I was lost before I got here and am still very confused. From the very start I get the same "Canceled" SignInStatus and not a single clue what is causing this.


EDIT: how to find and edit scopes for already created credentials:
1) go to OAuth consent screen webpage: https://console.cloud.google.com/apis/credentials/consent
2) click EDIT APP
3) click SAVE AND CONTINUE
4) click ADD OR REMOVE SCOPES

 

FWIW, from my modest perspective, I had a build version where the Game Services were not initialized on startup but would only be triggered if the player went into anything that would require this API, like for example in a "records" section to look at scores or else. Nevertheless, even with this method, there would be that top banner popup that would appear soon into the launching of the app, the one saying something like "welcome back", and showing one's avatar.

What kind of friction does it create? Are you principally annoyed by the entire rectangular pop up showing up in the middle of the screen, putting your app on hold for a brief moment, before disappearing and letting your app continue its launching process?

 

It's probably easier to just create two new IDs, a 'client android' and a 'client web', and directly from the Google Cloud's console (there's a link if you go in App > Play Game Services > Setting and Management > Settings). The link will be named something like "Display on Google Cloud Platform".
In the Play Console you can refresh the OAuth clients. Be sure that the web one (that's going to be used for the server) is not in draft. You will have to publish it.
Also, check in the Cloud Platform be sure to look for all the options about testing, who's been added (email adresses), if it's in testing or published mode, internal or external, etc.

 

Thank you. In my case problem was I followed blindly tutorial and generated... second SHA1 certificate. I already had one generated and signed app with it during my previous attempts, before I even got here.

 

Hey did you manage to solve this?

 

@mohamedtaher
Go to Play Console > Testers and add email id for testers. Use the email id logged in in your phone GPGS and build and run in your phone.
Please make sure email id also added in testers in google cloud android setup

 

Hello! I have the following issue when testing on my mobile.

It seems that that I can authenticate, I'm getting an authorization code, but when calling SignInWithGooglePlayGames, it seems that it fails at await AuthenticationService.Instance.SignInWithGooglePlayGamesAsync(authCode). Anybody encountered this issue?

 

I've made this tutorial from scratch twice, and the result is the same. I can get the game working with Google Play Services (login and leaderboard) when testing in Unity to my phone, but not when I upload the aab to google play for internal testing. It fails to retrieve Google Play Games authoritazion code.
How can I accomplish what sampenguin wrote?

1. There is one that corresponds with the SHA Fingerprint for any APKs I build and test on my local hardware using my local keystore.
2. There is a second *different* credential that corresponds with the SHA Fingerprint that Google uses when it re-signs your uploaded apks/aabs in the console.

I'm trying to make it but I cannot figure it out. Could anyone point me in the right direction? This is my first game, so I'm very confused with this. Thanks guys.

 

This is great and works (it signs me in); however, it causes the scene/unity player to freeze when run on a device.

The pre-loader, very basic just determines whether the tutorial should load or the main menu, remains a black screen, or any of my other scenes will show some of the graphics and play music but no UI or parallax effects I have, my scenes load halfway through and gets stuck when it signs in the tester account that is linked to the oauth consent api.

Devices: android studio AVD, Pixel 3, Nox Emulator. Logcat has no helpful info either when connected to them.

 

I've been trying to make this work for days, I've followed the guide multiple times exactly and tried everything I could find in this thread, but I always get "SignInStatus.Canceled" when calling PlayGamesPlatform.Instance.Authenticate (I'm using the provided code).

Any idea what could be going on? This is making me abandon google play services. Using an email/password login will be more uncomfortable for users but I have no other choice for cloud save.

This is ALL I get from logcat, as you can see there is no usable errors or logs at all:

2023/08/02 00:46:06.947 5233 19823 Warn Unity *** [Play Games Plugin 0.11.01] 08/02/23 0:46:06 +02:00 ERROR: Returning an error code.

2023/08/02 00:46:06.947 5233 19823 Warn Unity GooglePlayGames.OurUtils.PlayGamesHelperObject:Update()

2023/08/02 00:46:06.947 5233 19823 Warn Unity

2023/08/02 00:46:06.948 5233 19823 Error FileUtils err open mi_exception_log errno=2

2023/08/02 00:46:06.948 5233 19823 Error FileUtils err write to mi_exception_log

2023/08/02 00:46:06.949 5233 19823 Info Unity RESULT: Canceled

2023/08/02 00:46:06.949 5233 19823 Info Unity <>c__DisplayClass4_0:<LoginGooglePlayGames>b__0(SignInStatus)

2023/08/02 00:46:06.949 5233 19823 Info Unity GooglePlayGames.OurUtils.PlayGamesHelperObject:Update()

2023/08/02 00:46:06.949 5233 19823 Info Unity

2023/08/02 00:46:06.949 5233 19823 Info Unity Login Unsuccessful

2023/08/02 00:46:06.949 5233 19823 Info Unity <>c__DisplayClass4_0:<LoginGooglePlayGames>b__0(SignInStatus)

2023/08/02 00:46:06.949 5233 19823 Info Unity GooglePlayGames.OurUtils.PlayGamesHelperObject:Update()

2023/08/02 00:46:06.949 5233 19823 Info Unity

2023/08/02 00:46:06.955 5233 19823 Error Unity Exception: Failed

2023/08/02 00:46:06.955 5233 19823 Error Unity   at GPManager.Start () [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback (System.Threading.ContextCallback callback, System.Object state, System.Threading.Tasks.Task& currentTask) [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Threading.Tasks.Task.FinishContinuations () [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Threading.Tasks.Task.Finish (System.Boolean bUserDelegateExecuted) [0x00000] in <00000000000000000000000000000000>:0

2023/08/02 00:46:06.955 5233 19823 Error Unity   at System.Threading.Tasks.Task.TrySetException (System.Object exceptionObject) [0x00000

 

Ok, me a collide with it troubles -
first your look in google play games console application signature in integrity API settings (copy SHA key from here to console in OAuth - then got a new clientID and client secret)
It hard to understanding, google want to protect your app and generating own SHA for app (SHA which you use - it's upload key)
Also check in google cloud console - Oauth consent screen.
You should connect all play games services like as it this tutorial

 

Thanks, but not sure I understand?
As I've said, I've followed the guide multiple times exactly

 

Hey im have the same problem here. But im testing my APP directly from local unity build at my Phone, with a USB cable coonected, and im manager the logs at realtime at Unity Editor. At you problem you was with problem at your public BUILD right?

So why im with the same problem at my local build test?
Kinda, my main doubt now is: Can i test it without publicate a build at console?

For knowedge i found the certicates that you saw at your post.



Is this where the solution is? I don't understand how you solved this.

My Log is equal of you:


Anyone could gimme some HELP? Im trying it for a lot of days.. I Will crazy!

 

Ooow I Miss my informations for some help.
I already the thow credentials from cloud console:


At google Play console i have too:


I Configured all equal the tutorial! I Generate correcly my SHA1, and i configured correctly the UnityEditor GooglePlay Games Pack and Unity Authentication pack witch WebClient ID and Client Secret generated by Game Server Certificate.

So, i cant understand.. Why?????


I'm looking in other forums and I even used BARD and ChatGPT kkk. Unfortunately I can't understand.

I have noticed that this error always occurs when people publish their games publicly. When the game is published, they forget or don't know that there is another certificate for it. They continue using the test version certificate and therefore cannot authenticate and the log that appears for them is the same as mine.

But I don't have my APP Published.
To make sure the problem is real here, I even published an Internal Test version of the game. I downloaded this version on my device and listened to the LOGS.. Same issue occurs. Both building directly from unity on my cell phone and testing the version for internal web tests.

I don't know what else I should do. I redid the tutorial many times and made another project to test and in both, the problem is the same!

 

Use App signin SHA1 certificate(Unity Dashboard)