Exercises in futility: One-time events in Android

Sometimes, I get the impression one needs 42 hours of research and a PhD dissertation to figure out how to send a one-time event from the ViewModel layer to the UI safely these days. Memes aside, it feels like there is no “true” consensus on how to do such a

Exercises in futility: Jetpack Compose Recomposition

Compose is fun. I do get the feeling that there are quite a few “gotchas” when working with it, though. Here are a few questions that kept bugging me: * Are all functions equal in the eyes of the compiler? * Are suspend functions stable/immutable? * Do recomposition scopes even matter much?

Working with Compose Navigation, Dagger2, ViewModels.. oh my 🩻

Dagger-Hilt is fine and all. Unfortunately, it arrived a bit too late in the android dev lifecycle. If I had to guess, most projects out there are still stuck using plain Dagger2. The official google android docs use Hilt to showcase Jetpack Compose code. What if you are stuck in

Gotchas in Per-App Language Preferences and Android Locale

These are not the droids you are looking for

Android Shorts 🩳: Testing Toasts with Espresso

On a long enough timeline, every test is a flaky test

Android Shorts 🩳: Custom lint rules

Wot I think

Android Shorts 🩳: WorkManager — Observing a WorkRequest (level paranoid)

Start a work request (see how-to-hilt+workmanager in the previous episode) A method in a ViewModel will do: Observing the state WorkManager.getWorkInfoByIdLiveData returns LiveData , which isn’t really useful at the moment. Turn that into a flow by adding the livedata-ktx dependency. Print out the state of the work

Android Shorts (🩳): WorkManager + Hilt

Android Shorts 🩳: WorkManager + Hilt Add (more) dependencies Declare a dagger module Make it easy to inject the singleton WorkManager instance anywhere. Debug logging level is optional. Customize the application class We already declared the WorkConfiguration up above in the dagger module. Might as well use it. Fix up the manifest

StateFlow, SharedFlow and the secret bus 🚌

Kotlin Coroutines 1.4 is here, as is another chance to stave off boredom.

👏 ViewModel Saved State Review 👏

🤖::execute order process death::🤖

Exercises in futility: Unit-testing LiveData, ViewModels and Coroutines

This is part of a series head-scratching my way into coroutines. It can be read as a standalone although you might be missing out on some spicy memes here and here. Testing ViewModels without losing the will to live A ViewModel “sits” quite close to the activity/fragment. Something that

On testing — Kotlin Coroutines

Or how to pretend you know what you are doing on pull requests