Android Question Firebase push notification

[paiac66]

Hi, I have registered my app into Firebase project but nothing push notification arrive to my app. I send message with B4J to topic "general", the result show correctly the message-id.
Moreover, how does the subscription of the app to a topic work? Does it result in the firebase project?

Thanks in advance

 

[Erel]

All that I can say is that something is misconfigured.

Create a new project with the same package name and carefully follow the instructions: https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/
Once you get it working, you should compare it to your full project.

 

[paiac66]

I followed your instructions but notifications are not coming. The version of B4A is 11.50, the Manifest file is updated. Also, after calling the channel subscription ("general" in this case), no tokens are returned from Firebase. What am I doing wrong?

To send the notifications I use the code of the B4J project "nou ui".
I enclose the test project.
Thank you

 

[Erel]

First step is to set the targetSdkVersion to 30 or 31.

 

[paiac66]

First step is to set the targetSdkVersion to 30 or 31.

Oh, I'm sorry, I left the wrong value, before it was correctly at 30 ...

 

[Erel]

Start with this example: https://www.b4x.com/android/forum/threads/b4x-b4xpages-firebase-push-example.120523/
If it doesn't work for you then your Firebase project is misconfigured.

 

[paiac66]

Hi Erel, the problem seems to be only on my huawei mate 20 lite (which has google services) and Android 10. In fact, I tested it on another device and everything works. Do you have any suggestions?

 

[aeric]

 

[paiac66]

It doesn't work ... Can you explain to me why the fmc token is not generated? If the token is not generated, the registration to the topic is not carried out and, therefore, notifications do not arrive. Some idea?

 

[paiac66]

HELP ME! I installed firebase-iid (ver. 17...) from SDKManager and now, when run my app with firebase, it crash! how can i fix it?

 

[aeric]

HELP ME! I installed firebase-iid (ver. 17...) from SDKManager and now, when run my app with firebase, it crash! how can i fix it?

You may want to start a new thread.
Find the folder and delete any version you think a mistake
C:\<AndroidSDK>\extras\b4a_remote\com\google\firebase\firebase-iid
Then run update SDK Manager with the right version?
(I have version 20.2.4)

 

[Erel]

HELP ME! I installed firebase-iid (ver. 17...) from SDKManager and now, when run my app with firebase, it crash! how can i fix it?

Don't. Delete your SDK and download a new one: https://www.b4x.com/b4a.html

 

[paiac66]

Don't. Delete your SDK and download a new one: https://www.b4x.com/b4a.html

Thanks for you suggestion, I did it. But i still have the issue of the token not being generated on my huawei mate 20 lite. I'm frustrated!

 

[aeric]

Thanks for you suggestion, I did it. But i still have the issue of the token not being generated on my huawei mate 20 lite. I'm frustrated!

I thought I don't need to worry about the token if I am using topic to send. The token is for sending to single device. Correct me if I am wrong.

 

[DonManfred]

The token is for sending to single device. Correct me if I am wrong.

No, that´s correct. You have to send this token to your backend to be able to send to this token from serverside.

 

[aeric]

No, that´s correct. You have to send this token to your backend to be able to send to this token from serverside.

Thanks @DonManfred
I have been long time no develop with B4A especially with Firebase. I am not sure I remember correctly.

I remember I tried with token but it made things more complicated as the token keep refreshed and renewed with a new one. I don't know the correct way to handle it.
Using a topic subscription is easier to manage. I just need to store the unique topics of the registered devices like "and_prod_100001" and "ios_dev_100002" in my database server. To send to individual devices, I can use "and" prefix for Android, "ios" for iOS and "prod" denotes Production/Live and "dev" denotes Development version.

 

[paiac66]

Thanks @aeric, a good idea is that of the progressive number for each device. But the messages don't arrive anyway. On my device, in the app's notification settings, "allow notifications" is enabled but as the "notification type" it appears "This app has not sent notifications yet". On another devices (Android 9) everything works perfectly.

 

[aeric]

I don't know what's wrong. I suggest you check back the tutorial video again.
https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/

 

[aeric]

I check your project in post #3.
You have this line. I don't think it is needed.

#AdditionalJar: com.google.android.gms:play-services-base

You also have different code in Starter service.
Yours:

Sub Service_Create

End Sub

Sub Service_Start (StartingIntent As Intent)
    CallSubDelayed(FirebaseMessaging, "SubscribeToTopics")
    Service.StopAutomaticForeground 'Starter service can start in the foreground state in some edge cases.
End Sub

Erel's B4XPages example:

Sub Service_Create
    CallSubDelayed(FirebaseMessaging, "SubscribeToTopics")
End Sub

Sub Service_Start (StartingIntent As Intent)
    Service.StopAutomaticForeground 'Starter service can start in the foreground state in some edge cases.
End Sub

Just start from the Push.zip project mentioned by Erel in post #6 above.

 

[paiac66]

I fixed the code but it still doesn't work