iOS Question Background network check

[QtechLab]

Hello guys,

Which is the most correct way to obtain a background worker that ask someting to a server, in order to obtain new data? The perfect example is WhatsApp.

Thanks in advance

 

[Erel]

All network calls are executed in the background.

If this is a http server then you should use iHttpUtils2.

 

[QtechLab]

I wrote the protocol that download data yet. I Miss the part that let run my code in background. I've tried with background Fetch yesterday but it doesn't want to work.

i followed step by step your guide: https://www.b4x.com/android/forum/threads/background-fetch-downloads.56022/

 

[Erel]

You are confusing different things. A background worker is not related to background fetching.

Background fetching does work when implemented correctly.

 

[QtechLab]

Yes sorry, i was talking about fetching.

The log gave me this before close the debug of the App:

Can't endBackgroundTask: no background task exists with identifier 3b6e6e, or it may have already been ended. Break

 

[QtechLab]

This is what i'm trying to achieve:
I need to write a service that every 60 seconds checks some data on a remote server and, if necessary, download a few bytes notifying the user.
The service must be constant, stable in time.

Assuming that i can't use the push server because the Apps need to work alone
Is there any way to do that?

 

[JanPRO]

Hi,

Assuming that i can't use the push server

Push notifications are a good choice here, because iOS wouldn't wake up your App every minute for background fetch ...

I need to write a service that every 60 seconds checks some data on a remote server

You can do this service on the push server, and send a push notification to the user if necessary ...

The service must be constant, stable in time.

This could be a problem as Push notifications are not 100% reliable (from my experience I can say, that I had no problems yet)

Jan

 

[Erel]

The log gave me this before close the debug of the App:

Can't endBackgroundTask: no background task exists with identifier 3b6e6e, or it may have already been ended. Break

This is not related. Note that you cannot test the background fetch feature in debug mode.

 

[QtechLab]

Thanks every one.
i've written the remote server in vb.net, i'll add the part related to push notification