Push notifications device registration

Messaging Service Push Notifications
#1

Hi
I am trying to setup push notifications within a nativescript application. I have successfully configured and setup the FCM and obtain a registration token which we use within the register device call but we get errors

Backendless Version (3.x / 5.x, Online / Managed / Pro )

Online

Client SDK (REST / Android / Objective-C / Swift / JS )

JS

Application ID

E27B10A2-C4B9-A5A6-FF6A-AB65CBE35A00

Expected Behavior

  1. Register device for push notifications

Actual Behavior

  1. Backendless.Messaging.registerDevice throws “Device is not defined. Please, run the Backendless.setupDevice”

  2. However if I try to call Backendless.setupDevice with following device properties

{
“uuid”: “753bc5dd3b5228c3”,
“platform”: “Android”,
“version”: “7.0”
}

We get

"The sync methods of the Backendless API are deprecated and will be removed in the nearest future.
Please, use async methods instead.
error {
“message”: “unknown error occurred”,
“statusCode”: null
}
"

Thank You
Constantin

#2

Hi Constantin,

are you sure you get this error when you call Backendless.setupDevice?
Because it does not have a wrapper that would warn about using of deprecated approach.
I just checked your usecase and I didn’t get the behavior you described.
Please try again in this order and let us know if the error persists:

Backendless.setupDevice({
   "uuid": "753bc5dd3b5228c3",
   "platform": "Android",
   "version": "7.0"
})

Backendless.Messaging.registerDevice(/* your args here: deviceToken, channels, expiration */)

Regards,
Stanislaw

#3

Hi Stanislaw
Thanks for prompt response.

You are right , it is not the setupDevice but the registerDevice

I am calling it only with device token argument (I understand the other are optional)

Backendless.Messaging.registerDevice(deviceToken);

and I get

JS: The sync methods of the Backendless API are deprecated and will be removed in the nearest future.
JS: Please, use async methods instead.

I didn’t find anything in the documentation about how to make this an async call though

Thank You,
Constantin

#4

Now I was able to reproduce that issue, thank you for pointing this out!

I will fix it and release it soon, but for now I can suggest a temporary fix - add an empty array as the second argument: Backendless.Messaging.registerDevice(deviceToken, [])
This will not affect the logic of work.
I will inform you here when a new version of SDK with this fix is released.

Thanks & Regards,
Stanislaw

#5

Thanks, I tried your suggestion and I now receive the registration id.

But when I send the push notification from backendless console I get this:

System.err: java.lang.RuntimeException: Unable to instantiate receiver com.backendless.push.BackendlessBroadcastReceiver: java.lang.ClassNotFoundException: Didn’t find class “com.backendless.push.BackendlessBroadcastReceiver” on path: DexPathList[[zip file “/data/app/com.leadingedge.bikecare-1/base.apk”],nativeLibraryDirectories=[/data/app/com.leadingedge.bikecare-1/lib/arm64, /data/app/com.leadingedge.bikecare-1/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64, /system/vendor/lib64, /product/lib64]]

Not sure if I should open a new thread but I guess this is related to having the backendless Android SDK/JAR file added to my nativescript application?

Regards,
Constantin

#6

Yes, this is related to Android SDK.
Have you configured everything using this documentation?

https://backendless.com/docs/js/push_push_notification_setup_androi.html

The programm cannot find the class from androd sdk, which means that it is included incorrectly.

Regards,
Stanislaw

#7

Yes, my app uses gradle and this is the dependency sections

dependencies {
** implementation ‘com.google.firebase:firebase-core:17.0.1’**
** implementation ‘com.google.firebase:firebase-messaging:19.0.1’**
** implementation group: ‘com.backendless’, name: ‘backendless’, version: ‘5.3.0’ **
** implementation ‘com.android.support:multidex:1.0.3’**
}

And the JAR is added in my App_Resource/Android/libs folder but during compile I get lots of duplicate class errors:

Duplicate class weborb.writer.specialized.TypedResultSet found in modules jetified-backendless-5.3.0.jar (backendless-5.3.0.jar) and jetified-backendless-5.3.0.jar (com.backendless:backendless:5.3.0)
** Duplicate class weborb.writer.specialized.TypedResultSetWriter found in modules jetified-backendless-5.3.0.jar (backendless-5.3.0.jar) and jetified-backendless-5.3.0.jar (com.backendless:backendless:5.3.0)**

And it just ocurred to me that this might come from the fact that I have the JS SDK also added to the application?

Thanks,
Constantin

#8

Hi @Constantin_Craciunescu,

It appears that the backendless dependency is referenced twice. Could you please verify that?

Regards,
Mark

#9

Hi Mark
Thanks for the hint, indeed something was not right with they way I did it

I will leave my solution here in case someone else has the same issue

I have placed the backendless-5.3.0.jar file into platforms\android\app\libs and in my app\App_Resources\Android\app.gradle

…
dependencies {
implementation ‘com.google.firebase:firebase-core:17.0.1’
implementation ‘com.google.firebase:firebase-messaging:19.0.1’
implementation files(‘libs/backendless-5.3.0.jar’)
implementation ‘com.android.support:multidex:1.0.3’
}
…

I am now able to receive push notifications.

Thank you for all your help

Constantin