I have a problem with a label value being skipped ...

# mvikotlin

[Pavel S]

I have a problem with a label value being skipped if using coroutines extension labels when the label is published immediately on store startup. I’ve modified my previous sample to illustrate the issue. I expect to see “a” in the first text and “bb” in the second text. AStore dispatches an Action.PublishLabel in the bootstrapper, and the action handler publishes Label.LabelPublished. I subscribe to labels in the init block of DefaultWelcomeComponent but the label event is never received. But if you add a delay(<long>) call before the publish call, the label event is received. I initially thought this had something to do with the order of initialization of all the objects, but it seems that wasn’t the case, since if you use labels(observer: Observer<Label>): Disposable the label event is still received. How would you suggest to deal with this?

[Arkadii Ivanov]

Yep. You have to either publish the label asynchronously (e.g. by calling yield from a coroutine before publishing), or initialise (bootstrap) the store manually.

For the latter, see "Initializing a Store" here: https://arkivanov.github.io/MVIKotlin/store.html

[Pavel S]

Thanks, and when should Store.init() be called in this example?

[Arkadii Ivanov]

Right after all subscriptions and bindings are performed.

[Pavel S]

Well, I’ve tried creating it with autoInit = false, and added the store.init() here, but nothing changed

[Arkadii Ivanov]

I think you need to use Dispatchers.Main.immediate

[Pavel S]

in debugger I see 0 observers in labelSubject

[Arkadii Ivanov]

Otherwise you're subscribing asynchronously

[Pavel S]

Oh, thanks! It actually works with Dispatchers.Main.immediate even with autoInit = true

[Arkadii Ivanov]

Awesome!