Slide 1
Slide 1 text
Flux for Android
shaunkawano
Slide 2
Slide 2 text
What is Flux?
Slide 3
Slide 3 text
•Introduced by Facebook(@F8 in 2014)
•Originally for building client-side web
applications
•Data flows in one direction
Flux
Slide 4
Slide 4 text
Unidirectional Data Flow
https://github.com/facebook/flux/tree/master/examples/flux-concepts#overview
“The most important concept
is that data flows
in one direction.”
Slide 5
Slide 5 text
Flow of Data
Action View
Dispatcher Store
http://facebook.github.io/flux/docs/in-depth-overview.html#structure-and-data-flow
Slide 6
Slide 6 text
Flow of Data
Action View
Dispatcher Store
Action
Creator
Slide 7
Slide 7 text
Simple
Slide 8
Slide 8 text
Flow of Data
Action View
Dispatcher Store
Action
Creator
Slide 9
Slide 9 text
Action
View
Dispatcher
Store
Action
Creator
Slide 10
Slide 10 text
Action
View
Dispatcher
Store
Action
Creator
• User Interface
• Render based on Store’s state
• Store subscriber
• Has no states
Slide 11
Slide 11 text
Action
View
Dispatcher
Store
Action
Creator
• Helper
• Creates Actions
• Passes Actions to Dispatcher
• Has no states
Slide 12
Slide 12 text
Action
View
Dispatcher
Store
Action
Creator
• Container
• Created by ActionCreator
• Dispatched by Dispatcher
• Delivered to Store
Slide 13
Slide 13 text
Action
View
Dispatcher
Store
Action
Creator
• Central Hub for all of the data
flows
• Dispatches Actions to Stores
• Has no states
Slide 14
Slide 14 text
Action
View
Dispatcher
Store
Action
Creator
• State manager
• Changes its states and data
only by receiving Actions
• Has states / internal logic
Slide 15
Slide 15 text
Store
The ONLY
state manager
Slide 16
Slide 16 text
Why?
Action View
Dispatcher Store
Action
Creator
Slide 17
Slide 17 text
DRY
Slide 18
Slide 18 text
Construct Flux Dataflow
Action View
Dispatcher Store
Action
Creator
Slide 19
Slide 19 text
image: https://material.io/guidelines/components/lists.html#lists-specs
Slide 20
Slide 20 text
Libraries in this Example
•RxJava
•Dagger
•Data Binding
•greenrobot/EventBus
•uber/AutoDispose
•trello/navi
Slide 21
Slide 21 text
No content
Slide 22
Slide 22 text
View
View
Slide 23
Slide 23 text
Activity
Fragment
Views(e.g. RecyclerView)
Custom View
View
Slide 24
Slide 24 text
onCreate(savedInstanceState: Bundle?)
View
Slide 25
Slide 25 text
class UserListActivity : BaseActivity() {
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
Slide 26
Slide 26 text
class UserListActivity : BaseActivity() {
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
Slide 27
Slide 27 text
…
…
Slide 28
Slide 28 text
class UserListActivity : BaseActivity() {
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
Slide 29
Slide 29 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
Slide 30
Slide 30 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var userListStore: UserListStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
1. Initialize View
2. Subscribe State
3. Call ActionCreator’s functions
View
3 Steps in Activity / Fragment
Slide 31
Slide 31 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var userListStore: UserListStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
1.
Initialize View
View
Slide 32
Slide 32 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize View
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
}
Slide 33
Slide 33 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize View
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
}
View
2.
Subscribe State
Slide 34
Slide 34 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize View
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
}
View
2.
Subscribe
“Loading” State
Slide 35
Slide 35 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize View
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
// Subscribe State
loadingStore.loadingState.autoDisposable(scope)
.subscribe { binding.isLoading = it }
}
Slide 36
Slide 36 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize View
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
// Subscribe State
loadingStore.loadingState.autoDisposable(scope)
.subscribe { binding.isLoading = it }
}
Slide 37
Slide 37 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// initView()
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
// subscribeState()
loadingStore.loadingState.autoDisposable(scope)
.subscribe { binding.isLoading = it }
}
Slide 38
Slide 38 text
class UserListActivity : Activity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
}
…
Slide 39
Slide 39 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
}
…
View
3.
Call ActionCreators’ functions
Slide 40
Slide 40 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
// Create & Dispatch Action
actionCreator.showUserList()
}
…
Slide 41
Slide 41 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
// Create & Dispatch Action
actionCreator.showUserList()
}
…
View
Slide 42
Slide 42 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
// Create & Dispatch Action
actionCreator.showUserList()
}
…
Action View
Dispatcher Store
Action
Creator
Slide 43
Slide 43 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
// Create & Dispatch Action
actionCreator.showUserList()
}
…
Action View
Dispatcher Store
Action
Creator
Slide 44
Slide 44 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
// Create & Dispatch Action
actionCreator.showUserList()
}
…
Action
Creator
Slide 45
Slide 45 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Action View
Dispatcher Store
Action
Creator
Slide 46
Slide 46 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Action View
Dispatcher Store
Action
Creator
Slide 47
Slide 47 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Slide 48
Slide 48 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Slide 49
Slide 49 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Slide 50
Slide 50 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Slide 51
Slide 51 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
LoadingAction
Action
Slide 52
Slide 52 text
Action
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Slide 53
Slide 53 text
Action
sealed class LoadingAction(activity: Activity) {
val activityKey: String = activity.componentName.className
class Idle(activity: Activity) : LoadingAction(activity)
class Loading(activity: Activity) : LoadingAction(activity)
}
Slide 54
Slide 54 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
UserListAction
Action
Slide 55
Slide 55 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Slide 56
Slide 56 text
Action
sealed class UserListAction {
class ShowUserList(val userList: UserList) : UserListAction()
class Error(val error: Throwable) : UserListAction()
}
Slide 57
Slide 57 text
Action
sealed class UserListAction {
class ShowUserList(val userList: UserList) : UserListAction()
class Error(val error: Throwable) : UserListAction()
}
Action View
Dispatcher Store
Action
Creator
Slide 58
Slide 58 text
Action
sealed class UserListAction {
class ShowUserList(val userList: UserList) : UserListAction()
class Error(val error: Throwable) : UserListAction()
}
Action View
Dispatcher Store
Action
Creator
Slide 59
Slide 59 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Action
Creator
Slide 60
Slide 60 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 61
Slide 61 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 62
Slide 62 text
Dispatcher
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Slide 63
Slide 63 text
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Dispatcher
For Broadcasting Actions:
• RxJava
• EventBus
… and more?
Slide 64
Slide 64 text
Dispatcher
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Action View
Dispatcher Store
Action
Creator
Slide 65
Slide 65 text
Dispatcher
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Action View
Dispatcher Store
Action
Creator
Slide 66
Slide 66 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 67
Slide 67 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatch
LoadingAction
Dispatcher
Slide 68
Slide 68 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 69
Slide 69 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 70
Slide 70 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 71
Slide 71 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 72
Slide 72 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
For Observing Lifecycle Events:
• AAC: Lifecycle
• RxLifecycle: Navi
… and more?
Store
Slide 73
Slide 73 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 74
Slide 74 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 75
Slide 75 text
@PerActivity class LoadingStore
@Inject constructor(private val activityKey: String,
dispatcher: Dispatcher, navi: NaviComponent) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
…
}
Store
Slide 76
Slide 76 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 77
Slide 77 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 78
Slide 78 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 79
Slide 79 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 80
Slide 80 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatch
UserListAction
Dispatcher
Slide 81
Slide 81 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 82
Slide 82 text
@PerActivity class UserListActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi,
private val activity: Activity) {
fun showUserList() {
dispatcher.dispatch(LoadingAction.Loading(activity))
api.fetchUserList().subscribeBy(
onSuccess= { userList ->
dispatcher.dispatch(UserListAction.ShowUserList(userList))
dispatcher.dispatch(LoadingAction.Idle(activity))
},
onError = { e ->
dispatcher.dispatch(UserListAction.Error(e))
dispatcher.dispatch(LoadingAction.Idle(activity))
})
}
}
Dispatcher
Slide 83
Slide 83 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 84
Slide 84 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 85
Slide 85 text
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
…
fun addOnListChangedCallback(callback:
ObservableList.OnListChangedCallback>) {
userList.addOnListChangedCallback(callback)
}
fun removeOnListChangedCallback(callback:
ObservableList.OnListChangedCallback>) {
userList.removeOnListChangedCallback(callback)
}
Store
Slide 86
Slide 86 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 87
Slide 87 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 88
Slide 88 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 89
Slide 89 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val listSubject = PublishSubject.create>()
val listState: Observable> = listSubject.hide()
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
listSubject.onNext(action.userList.data)
}
}
}
}
Action View
Dispatcher Store
Action
Creator
Slide 90
Slide 90 text
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val listSubject = PublishSubject.create>()
val listState: Observable> = listSubject.hide()
init {
Streaming
Loading State Change
Using RxJava
Store
Slide 91
Slide 91 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 92
Slide 92 text
@PerActivity class LoadingStore
@Inject constructor( … ) {
private val loadingSubject = PublishSubject.create()
val loadingState: Observable = loadingSubject.hide()
init { … }
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
Slide 93
Slide 93 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// initView()
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
// subscribeState()
loadingStore.loadingState.autoDisposable(scope)
.subscribe { binding.isLoading = it }
}
View
Slide 94
Slide 94 text
class UserListActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserListActionCreator
@Inject lateinit var loadingStore: LoadingStore
@Inject lateinit var userListAdapter: UserListAdapter
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_list)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// initView()
binding.fab.setOnClickListener { doSomething() }
binding.userList.adapter = userListAdapter
binding.userList.layoutManager = LinearLayoutManager(this)
// subscribeState()
loadingStore.loadingState.autoDisposable(scope)
.subscribe { binding.isLoading = it }
}
View
Slide 95
Slide 95 text
…
…
Slide 96
Slide 96 text
…
…
Slide 97
Slide 97 text
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val listSubject = PublishSubject.create>()
val listState: Observable> = listSubject.hide()
init {
Streaming
UserList Change
Using Data Binding
Store
Slide 98
Slide 98 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init {
navi.addListener(Event.CREATE, { dispatcher.register(this)})
navi.addListener(Event.DESTROY, { dispatcher.unregister(this)})
}
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserListAction) {
when (action) {
is UserListAction.ShowUserList -> {
userList.addAll(action.userList.data)
}
is UserListAction.Error -> {
…
}
}
…
Slide 99
Slide 99 text
@PerActivity class UserListAdapter
@Inject constructor(
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
private val listChangeCallback = …
init {
navi.addListener(Event.CREATE, {
store.addOnListChangedCallback(listChangeCallback) })
navi.addListener(Event.DESTROY, {
store.removeOnListChangedCallback(listChangeCallback) })
}
…
View
Slide 100
Slide 100 text
@PerActivity class UserListAdapter
@Inject constructor(
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
private val listChangeCallback = …
init {
navi.addListener(Event.CREATE, {
store.addOnListChangedCallback(listChangeCallback) })
navi.addListener(Event.DESTROY, {
store.removeOnListChangedCallback(listChangeCallback) })
}
…
View
Slide 101
Slide 101 text
@PerActivity class UserListAdapter
@Inject constructor(
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
private val listChangeCallback = …
init {
navi.addListener(Event.CREATE, {
store.addOnListChangedCallback(listChangeCallback) })
navi.addListener(Event.DESTROY, {
store.removeOnListChangedCallback(listChangeCallback) })
}
…
View
Slide 102
Slide 102 text
@PerActivity class UserListAdapter
@Inject constructor(
private val store: UserListStore
navi: NaviComponent):
RecyclerView.Adapter() {
private val listChangeCallback = …
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.binding.executePendingBindings()
}
override fun getItemCount() = store.userListSize
…
View
Slide 103
Slide 103 text
Constructed Flux Dataflow
Action View
Dispatcher Store
Action
Creator
Slide 104
Slide 104 text
No content
Slide 105
Slide 105 text
‘Favorite’?
User Detail?
Slide 106
Slide 106 text
No content
Slide 107
Slide 107 text
No content
Slide 108
Slide 108 text
No content
Slide 109
Slide 109 text
No content
Slide 110
Slide 110 text
No content
Slide 111
Slide 111 text
No content
Slide 112
Slide 112 text
No content
Slide 113
Slide 113 text
‘Favorite’?
User Detail?
Slide 114
Slide 114 text
@PerActivity class UserListAdapter
@Inject constructor(
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.binding.executePendingBindings()
}
…
View
Slide 115
Slide 115 text
@PerActivity class UserListAdapter
@Inject constructor(
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 116
Slide 116 text
@PerActivity class UserListAdapter
@Inject constructor(
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 117
Slide 117 text
@PerActivity class UserListAdapter
@Inject constructor(
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 118
Slide 118 text
@PerActivity class UserListAdapter
@Inject constructor(
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 119
Slide 119 text
@PerActivity class UserActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi) {
fun favorite(user: User) {
api.favorite(user.id).subscribeBy(
onComplete = {
dispatcher.dispatch(UserAction.Favorite(user.id))
},
…
}
}
Action
Creator
Slide 120
Slide 120 text
@PerActivity class UserActionCreator
@Inject constructor(private val dispatcher: Dispatcher,
private val api: SomeApi) {
fun favorite(user: User) {
api.favorite(user.id).subscribeBy(
onComplete = {
dispatcher.dispatch(UserAction.Favorite(user.id))
},
…
}
}
Action
Creator
Slide 121
Slide 121 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init { … }
…
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserAction) {
when (action) {
is UserAction.Favorite -> {
userList.find { it.id == action.targetUserId }?.let {
// Update or replace with new user
}
}
}
…
Slide 122
Slide 122 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init { … }
…
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserAction) {
when (action) {
is UserAction.Favorite -> {
userList.find { it.id == action.targetUserId }?.let {
// Update or replace with new user
}
}
}
…
Slide 123
Slide 123 text
No content
Slide 124
Slide 124 text
No content
Slide 125
Slide 125 text
‘Favorite’?
User Detail?
Slide 126
Slide 126 text
@PerActivity class UserListAdapter
@Inject constructor(
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
init { … }
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 127
Slide 127 text
@PerActivity class UserListAdapter
@Inject constructor(
private val activityActionCreator: ActivityActionCreator,
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
…
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.root.setOnClickListener {
activityActionCreator.startUserDetailActivity(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 128
Slide 128 text
@PerActivity class UserListAdapter
@Inject constructor(
private val activityActionCreator: ActivityActionCreator,
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
…
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.root.setOnClickListener {
activityActionCreator.startUserDetailActivity(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 129
Slide 129 text
@PerActivity class UserListAdapter
@Inject constructor(
private val activityActionCreator: ActivityActionCreator,
private val userActionCreator: UserActionCreator,
private val store: UserListStore,
navi: NaviComponent):
RecyclerView.Adapter() {
…
override fun onBindViewHolder( … ) {
…
holder.binding.user = store.getUserAt(position)
holder.favIcon.setOnClickListener {
userActionCreator.favorite(user)
}
holder.binding.root.setOnClickListener {
activityActionCreator.startUserDetailActivity(user)
}
holder.binding.executePendingBindings()
}
…
View
Slide 130
Slide 130 text
@PerActivity class ActivityActionCreator
@Inject constructor(private val activity: Activity) {
fun startUserDetailActivity(user: User) {
val intent = UserDetailActivity.createIntent(activity, user)
activity.startActivity(intent)
}
fun start…Activity ( … ) { … }
fun start…Activity ( … ) { … }
}
Action
Creator
Slide 131
Slide 131 text
No content
Slide 132
Slide 132 text
No content
Slide 133
Slide 133 text
class UserDetailActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserActionCreator
@Inject lateinit var loadingStore: LoadingStore
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_detail)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
}
…
View
Slide 134
Slide 134 text
class UserDetailActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserActionCreator
@Inject lateinit var loadingStore: LoadingStore
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_detail)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initView()
subscribeState()
}
…
View
Slide 135
Slide 135 text
class UserDetailActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserActionCreator
@Inject lateinit var loadingStore: LoadingStore
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_detail)
}
override fun onCreate(savedInstanceState: Bundle?) {
initView()
…
}
private fun initView() {
binding.fab.setOnClickListener {
userActionCreator.favorite(user)
}
}
…
View
Slide 136
Slide 136 text
class UserDetailActivity : BaseActivity() {
@Inject lateinit var actionCreator: UserActionCreator
@Inject lateinit var loadingStore: LoadingStore
private val binding by lazy {
DataBindingUtil.setContentView(
this, R.layout.activity_user_detail)
}
override fun onCreate(savedInstanceState: Bundle?) {
initView()
…
}
private fun initView() {
binding.fab.setOnClickListener {
userActionCreator.favorite(user)
}
}
…
View
Slide 137
Slide 137 text
No content
Slide 138
Slide 138 text
No content
Slide 139
Slide 139 text
No content
Slide 140
Slide 140 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init { … }
…
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserAction) {
when (action) {
is UserAction.Favorite -> {
userList.find { it.id == action.targetUserId }?.let {
// Update or replace with new user
}
}
}
…
Slide 141
Slide 141 text
Store
@PerActivity class UserListStore
@Inject constructor(dispatcher: Dispatcher, navi: NaviComponent) {
private val userList = ObservableArrayList
init { … }
…
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserAction) {
when (action) {
is UserAction.Favorite -> {
userList.find { it.id == action.targetUserId }?.let {
// Update or replace with new user
}
}
}
…
Slide 142
Slide 142 text
DRY
Slide 143
Slide 143 text
No content
Slide 144
Slide 144 text
Code Consistency
Slide 145
Slide 145 text
1. Initialize View
2. Subscribe State
3. Call ActionCreators’ functions
Steps in Activity / Fragment
View
Slide 146
Slide 146 text
1. initView()
2. subscibeState()
3. actionCreator.doSomething()
Steps in Activity / Fragment
View
Slide 147
Slide 147 text
1. (Create & Dispatch LoadingAction)
2. Create & Dispatch Success / Error Action
3. (Create & Dispatch Idle Action)
Steps in ActionCreator
Action
Creator
Slide 148
Slide 148 text
The logic inside Store
becomes the intuitive
specification
Slide 149
Slide 149 text
• Kotlin sealed classes & “when” keyword
• Actions with descriptive names
Slide 150
Slide 150 text
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: LoadingAction) {
if (action.activityKey == activityKey) {
when (action) {
is LoadingAction.Loading -> {
loadingSubject.onNext(true)
}
is LoadingAction.Idle -> {
loadingSubject.onNext(false)
}
…
Store
When given action is Loading, then the
next loading state is “true”, if the
action is Idle, then “false”.
Slide 151
Slide 151 text
Store
@Subscribe(threadMode = ThreadMode.MAIN)
fun on(action: UserAction) {
when (action) {
is UserAction.Favorite -> {
userList.find { it.id == action.targetUserId }?.let {
// Update or replace with new user
}
}
}
…
When given action is User’s Favorite
Action, then find target user from user
list and update as favorited (if there is).
Slide 152
Slide 152 text
⚠
Slide 153
Slide 153 text
Dispatcher
Slide 154
Slide 154 text
Dispatcher
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Action View
Dispatcher Store
Action
Creator
Slide 155
Slide 155 text
Dispatcher
class Dispatcher {
private val eventBus = EventBus.builder()
.addIndex(DispatcherIndex())
.throwSubscriberException(BuildConfig.DEBUG)
.build()
fun dispatch(event: Any) {
eventBus.post(event)
}
fun register(observer: Any) {
eventBus.register(observer)
}
fun unregister(observer: Any) {
eventBus.unregister(observer)
}
Action View
Dispatcher Store
Action
Creator
Slide 156
Slide 156 text
Store
Action
Creator
Slide 157
Slide 157 text
Store
The ONLY
state manager
Slide 158
Slide 158 text
Tips
Slide 159
Slide 159 text
Tips
• DataBinding
• ✅ Construct feature-based
• Talk / Ask to team members!
Slide 160
Slide 160 text
Thank you!