DroidKaigi 2019 is a conference tailored for developers on 7th and 8th February 2019.
You can download the binary built on master branch from
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- View conference schedule and details of each session
- Set notification for upcoming sessions on your preference
- Search sessions and speakers and topics
- Show Information Feed
We are always welcome your contribution!
Android Studio 3.2.1
Android Studio Kotlin Plugin 1.3.11-release-Studio3.2-1
Check out following status.
Preference
> Languages & Frameworks
> Kotlin Updates
We use GitHub issues to manage the tasks. Please find the issues you'd like to contribute in it. welcome contribute and easy are good for first contribution.
Of course, it would be great to send PullRequest which has no issue!
If you find the tasks you want to contribute, please comment in the issue like this to prevent to conflict contribution. We'll reply as soon as possible, but it's unnecessary to wait for our reaction. It's okay to start contribution and send PullRequest!
We've designated these issues as good candidates for easy contribution. You can always fork the repository and send a pull request (on a branch other than master
).
We separate the modules for each feature.
You can check generated module dependency diagram
Unidirectional data flow(Flux-based) Architecture with Kotlin Coroutines
and AndroidX
Libraries(LiveData
, ViewModel
, Room
) DataBinding
, Dagger
and AssistedInject
, Firebase
etc.
By using Groupie
you can simplify the implementation around RecyclerView.
class SpeakerItem @AssistedInject constructor(
@Assisted val speaker: Speaker, // Inject by AssistedInject
val navController: NavController // Inject by Dagger
) : BindableItem<ItemSpeakerBinding>() {
@AssistedInject.Factory
interface Factory {
fun create(
speaker: Speaker
): SpeakerItem
}
override fun getLayout(): Int = R.layout.item_speaker
override fun bind(itemBinding: ItemSpeakerBinding, position: Int) {
itemBinding.speakerText.text = speaker.name
...
}
}
We use AssistedInject
for creating item.
@Inject lateinit var speakerItemFactory: SpeakerItem.Factory
...
val speakerItems = session
.speakers
.map { speakerItemFactory.create(it) }
groupAdapter.update(speakerItems)
Unidirectional data flow(Flux-based) Architecture with Kotlin Coroutines and AndroidX Libraries(LiveData, ViewModel, Room) DataBinding, dependency injection, Firebase etc.
Fragments just call Action Creator's method.
class SessionPagesFragment : DaggerFragment() {
@Inject lateinit var announcementActionCreator: AnnouncementActionCreator
override fun onActivityCreated(savedInstanceState: Bundle?) {
...
announcementActionCreator.load()
}
Action Creator fetches data from DB / API with Kotlin Coroutines suspend function
. And Action Creator dispatches data loaded action and loading state changed actions.
class AnnouncementActionCreator @Inject constructor(
override val dispatcher: Dispatcher,
val firestore: Firestore,
@PageScope val lifecycle: Lifecycle
) : CoroutineScope by lifecycle.coroutineScope,
ErrorHandler {
fun load() = launch {
try {
dispatcher.dispatch(Action.AnnouncementLoadingStateChanged(LoadingState.LOADING))
// fetch announcement by Kotlin Coroutines suspend function
dispatcher.dispatch(Action.AnnouncementLoaded(firestore.getAnnouncements()))
dispatcher.dispatch(Action.AnnouncementLoadingStateChanged(LoadingState.LOADED))
} catch (e: Exception) {
onError(e)
dispatcher.dispatch(Action.AnnouncementLoadingStateChanged(LoadingState.INITIALIZED))
}
}
}
Actions are just data holder class.
sealed class Action {
...
class AnnouncementLoadingStateChanged(val loadingState: LoadingState) : Action()
class AnnouncementLoaded(val announcements: List<Announcement>) : Action()
...
}
Store subscribe dispatcher's action with Kotlin Coroutines channel
and transform it to AndroidX LiveData
.
This store is a ViewModel
. But if the store is used by the whole application(ex: UserStore), you can change the store to a singleton.
class AnnouncementStore @Inject constructor(
dispatcher: Dispatcher
) : ViewModel() {
val loadingState: LiveData<LoadingState> = dispatcher
.subscribe<Action.AnnouncementLoadingStateChanged>()
.map { it.loadingState }
.toLiveData(LoadingState.LOADING)
val announcements: LiveData<List<Announcement>> = dispatcher
.subscribe<Action.AnnouncementLoaded>()
.map { it.announcements }
.toLiveData(listOf())
}
In the fragment, we can observe Store's LiveData
. You can display the UI with LiveData
.
override fun onActivityCreated(savedInstanceState: Bundle?) {
...
announcementStore.loadingState.changed(viewLifecycleOwner) {
// apply loading state for progress bar
progressTimeLatch.loading = it == LoadingState.LOADING
}
announcementStore.announcements.changed(viewLifecycleOwner) { announcements ->
// we can show UI with announcements
}
...
Thank you for contributing!
- Contributors
- Designer
- App Distribution
- DeployGate (https://deploygate.com)
This project uses some modern Android libraries and source codes.
- Android Jetpack (Google)
- Foundation
- AppCompat
- Android KTX
- Mutidex
- Test
- Architecture
- Data Binding
- Lifecycles
- LiveData
- Navigation
- UI
- Emoji
- Fragment
- Transition
- ConstraintLayout
- RecyclerView
- ...
- Foundation
- Kotlin (Jetbrains)
- Stdlib
- Coroutines
- Serialization
- Firebase (Google)
- Authentication
- Cloud Firestore
- Dagger 2
- Core (Google)
- AndroidSupport (Google)
- AssistedInject (Square)
- Material Components for Android (Google)
- Ktor (Jetbrains)
- Android Client
- Json
- OkHttp (Square)
- Client
- LoggingInterceptor
- livedata-ktx (Shopify)
- LeakCanary (Square)
- Stetho (Facebook)
- Hyperion-Android (WillowTree)
- Groupie (lisawray)
- KLOCK (soywiz)
- MockK (oleksiyp)
- Injected ViewModel Provider (evant)
- Google I/O 2018 (Google)
- Picasso (Square)