Newbie question on background resources

The if is safeguarding against earlier versions of CIQ where loadResource might not be available. 

Surprised to see Storage.setValue in background code, though!

 I thought that was explicitly illegal in background processes. 

When youing resources in the background they must be scoped for the background.

See https://developer.garmin.com/connect-iq/core-topics/resources/  "Resource Scopes"

I'm kind of unclear on what you're doing some things the way they are.  You can avoid the 3.1 issue by not loading a resourse in the background (return an error code), and also not trying to do the setValue() for storage.  Return what's needed in Background.exit() and in onBackgroundData(), do what's needed as far as Storage or resources..

jim_m_58 said:

I'm kind of unclear on what you're doing some things the way they are.  You can avoid the 3.1 issue by not loading a resourse in the background (return an error code), and also not trying to do the setValue() for storage.  Return what's needed in Background.exit() and in onBackgroundData(), do what's needed as far as Storage or resources..

The OP mentioned that the code is from a Garmin SDK sample and they're trying to understand the "if(Application has :loadResource)" part.

I was just wondering how the resources work with backgrounds. I tried understanding it more studying the samples given. In BackgroundTimerBackground.mc in the backgroundTimer sample there is the function that does following:

Hey Flowstate, thank you very much for the help. I have another question regarding background services. I have been trying to implement a test background service on my smartwatch now, but it does not seem to work for me.

The code is quite simple:

using Toybox.Application;
using Toybox.WatchUi;
using Toybox.Background;
using Toybox.Time;

(:background)
class overloadApp extends Application.AppBase
{
    var mView;
    var mBackgroundData;
	
    function initialize() {
        AppBase.initialize();
        if(Background.getTemporalEventRegisteredTime() != null) {
            Background.registerForTemporalEvent(new Time.Duration(5*61));
        }
    }

    function onBackgroundData(data) {
        System.println("background data");
    }

    function getInitialView() {
    	System.println("App started");
    	mView = new overloadView();
        return [mView];
    }

    function getServiceDelegate(){
        return [new overloadDelegate()];
    }
}

///////////////////////////////////////////////////////////////////

using Toybox.Background;
using Toybox.Communications;
using Toybox.System;

(:background)
class overloadDelegate extends System.ServiceDelegate {
	function initialize() {
        ServiceDelegate.initialize();
    }


    function onTemporalEvent() {
        System.println("In temporal");
        Background.exit(true);
    }
}

So basically what i want to see is if the System.println("background data") or System.println("In temporal") is written in the log-file after 5-6 min which i defined in initialize. I tried running the code and waiting for about 15 minutes, but nothing seems to happen. I could at least see "App started" which is the system.print in getInitialView when checked the log-file. 

Thanks in advance! :) 

.

You probably don't want to do the register in initialize.  That gets called both when the main app starts, but also when the background starts.  Try moving the register inside getInitialView()

Ooh, that seems to solve it! Thank you