makeRequest does not call method(:onReceive) in background / WF

Marco over 6 years ago

Hi !

i've a problem i can't deal with (as a newbie!)

In a watchFace, i put a background Service to call a Financial web service API (would be the same for weather API).

The BF is ok, makeRequest call the webservice, i have my info in the simu / file -> View HTTP Traffic.

But after the request, onreceive function isn't called.

Andy Idea ?

(i put Sys.println almost everywhere… !)

thanks !

Marco

PS:

time simulation speeding Don't have any impact on background time services?

I set time simu to x100 faster, but obliged to wait for 5mn !

(

testing target MK1

Photon 4.8.0

SDK 3.1.6

)

Top Replies

jim_m_58 over 6 years ago in reply to Marco +2

Marco said:
makeRequest(Stock_symbol);
Sys.println("onTemporalEvent exit after makeRequest: "+ts+ " retour web=" + msg_value);
Background.exit(msg_value);

This is your problem. You…
jim_m_58 over 6 years ago in reply to Shent-Aurkhan (SHN) +2

You can have 3 outstanding makeWebRequests at the same time, but in the past, there was an issue when having 3 with android. So, what I do is chain them. Do request 1, and in it's callback, do request…
jim_m_58 over 6 years ago in reply to Marco +1

Here's a trick I use in background processes that do comm.

In the callback for makeWebRequest, if the status is 200, I return the data, but if it isn't 200, I return the status. Like this:

…

All Replies

jim_m_58 over 6 years ago in reply to Marco

You can't pass the image from the background back to your main app. bg.exit() only supports the data types you can have in storage

Marco over 6 years ago in reply to jim_m_58

Thanks. i may have change something for my weather request (i probably did !).

no image ing bg.exit(), ok.
but I was sure i would have been able to put the receive image in a global ?

so why can i use makeImageRequest in BG but not use RECEIVED image (or at least, it seems i received it) ?

seems strange for me (since i'm not familiar with all Garmin limitations and specs...)

thanks for your time. I'm at the end of my V1 "CubeWatch" WF , will use weather fontIcon (even if i would have succeed in dealing with web icon).

jim_m_58 over 6 years ago in reply to Marco

The backround has it own globals. They are not global between the main app and the background - they are separate.

Marco over 6 years ago in reply to jim_m_58

ok.Copy that. Thanks.

So i can read Global app data from BG °, but since BG is fully asynchronous, can just return data by the store on bg.exit().

<edit>

° : read, from BG, only by STORES via getProperty()...

</edit>

Hum...What can i do with an image, in WF BG?

peterdedecker over 6 years ago in reply to Marco

Marco said:
Hum...What can i do with an image, in WF BG?

Nothing.

It's an oversight that background.exit does not support images so makeimagerequest is not useful in a watch face.

Marco over 6 years ago in reply to peterdedecker

thanks Peter...maybe in some next SDK...

thanks for all your help Jim !

here is my V1 :

will test it, some job to do with pressure (not the same than in the watch !), with heartratemax (can't have it in the watch while in the simu it's ok). I'll optimize code, and next will be users settings !

(i have a crash in simu, without any notice nor msg anywhere, just the IQ icon with the yello "! " after some times running. I have to investigate that !)

Thank you very much !

Marco over 6 years ago in reply to Marco

Hi !

no questions ...

just a link for my testing watchFace:

https://apps.garmin.com/en-US/apps/0ac97c3d-bbd5-4d12-a8f3-606e53691603

(already working on V2 because lot of job to improve it !)

Does anyone knows if we can developp on Garmin Glasses ??

Future - according to me - will be on Glasses rather than any screens ;-)

thanks.

jim_m_58 over 6 years ago in reply to Marco

Toot a quick look at it in the store. You may want to check the permissions you have set, as there are things like BLE and ANT you don't use

Marco over 6 years ago in reply to jim_m_58

thanks.

i'll uncheck BLE and ANT permissions...

now woking on a loop for BG makeWebRequest ...

I'm having a lot of trouble to get the Lat/long still in memory (even with OS, after a long time they are cleared?)

and when going to me menu "connexion/OnOff/synchro etc) my view is reset (specifically weather and stock market data)... have to work on it !

jim_m_58 over 6 years ago in reply to Marco

currentLocation goes "stale" after a period of time and will be null. That's why you want to save off good ones in storage - so when it does go stale, you can use the last value in storage.

Sounds like you also need to put your data in storage, so that when you leave the watch face and return, you'll want to have data to display without waiting for the next temporal event.