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Android
DroidKaigi 2019
Tomoya Miwa, Yuri Hondo
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$ #
tomoya0x00
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Kiosk
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&%RX-8(
*)
Twitter : @tomoya0x00
Pokemon GO (%Lv.40): 1024 1615 6009
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URI
(
)
Android @DeNA - MOV
Twitter : URI - @yuyuyuyuyuri
Pokemon GO : 05URI28 - 0188 7196 1789
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c
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(Android)
BLE Logger
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➡
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OK
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310
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310
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310
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1000
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•
•
•
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•
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https://dena.com/jp/press/003459
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● 20179 "2 %
○ $
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'*
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BLE Logger
BLE
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,+,
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BLE Logger
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+.
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•
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⬇
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• ➡
• OK
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#
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●
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14
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●
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→
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/
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!14
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https://dena.com/jp/press/004421
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https://dena.com/jp/press/004421
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+
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MOV or
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Before
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After
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"!
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● Singleton & mutableclass
●
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!
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MOV
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(
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LED
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stateMachine(initial = NOT_LOANED) {
state(NOT_LOANED) {
edge(LOCK)
}
state(ON_LOAN, entry = { /* LED ON */ }, exit = { /* LED OFF */ }) {
state(LOCK) {
edge(UNLOCK)
edge(NOT_LOANED, guard = { it.isLongPress })
}
state(UNLOCK) {
edge(LOCK, guard = { !it.isLongPress })
}
}
}
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stateMachine(initial = NOT_LOANED) {
state(NOT_LOANED) {
edge(LOCK)
}
state(ON_LOAN, entry = { /* LED ON */ }, exit = { /* LED OFF */ }) {
state(LOCK) {
edge(UNLOCK)
edge(NOT_LOANED, guard = { it.isLongPress })
}
state(UNLOCK) {
edge(LOCK, guard = { !it.isLongPress })
}
}
}
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stateMachine(initial = NOT_LOANED) {
state(NOT_LOANED) {
edge(LOCK)
}
state(ON_LOAN, entry = { /* LED ON */ }, exit = { /* LED OFF */ }) {
state(LOCK) {
edge(UNLOCK)
edge(NOT_LOANED, guard = { it.isLongPress })
}
state(UNLOCK) {
edge(LOCK, guard = { !it.isLongPress })
}
}
}
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stateMachine(initial = NOT_LOANED) {
state(NOT_LOANED) {
edge(LOCK)
}
state(ON_LOAN, entry = { /* LED ON */ }, exit = { /* LED OFF */ }) {
state(LOCK) {
edge(UNLOCK)
edge(NOT_LOANED, guard = { it.isLongPress })
}
state(UNLOCK) {
edge(LOCK, guard = { !it.isLongPress })
}
}
}
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stateMachine(initial = NOT_LOANED) {
state(NOT_LOANED) {
edge(LOCK)
}
state(ON_LOAN, entry = { /* LED ON */ }, exit = { /* LED OFF */ }) {
state(LOCK) {
edge(UNLOCK)
edge(NOT_LOANED, guard = { it.isLongPress })
}
state(UNLOCK) {
edge(LOCK, guard = { !it.isLongPress })
}
}
}
✌
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"
●
● $#
!
●
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Tablet
Phone
Maps API
A
B
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Tablet
Phone
Maps API
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Tablet
Phone
Maps API
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Tablet
Phone
Maps API
UI
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UI
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Tablet
Phone
Maps API
A
B
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Tablet(
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(& $
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Logic / Data
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Logic / Data
UI / External
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GUI System
MVP MVVM
Flux Redux
MVI Hexagonal
Onion
Clean
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!
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MVP
GUI
MVI
Redux
MVVM
Flux
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GUI"
Flux vs MVVM
• View
! %7
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System
Hexagonal Onion
Clean
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System( %
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.6 ( #
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- UI
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- UI
View
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- external
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- external
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- infrastructure
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- infrastructure
API
DataBase
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- service
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- service
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- model
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- model
UIService
Action
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View
Action
Dispatcer
Store
Flux
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Infra
Service
Model
UI
External
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StateMachine
Dispatcher
Action
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View
IF
Event
Service IF
ActionDispatcher StateMachine
Flux
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①
UI
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①
1.
1.
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1.
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A
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State
↓
State
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State
focus = SELF
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SELF
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310
2.
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②
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②
1.
1.
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’
.
B
IF
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StateMachine
new
2.
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...!
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...
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Core
Sub
StateMachine
Sub
Event
Event
StateMachine
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✏
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No content
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1.
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No content
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Device (TaxiMeter)
interface TaxiMeter {
val status: Observable
}
EventHandler
private val sm: StateMachine by lazy {...}
init {
meter.status.subscribe {
handle(MapEvent.ChangeMeterStatus(it))
}.addTo(disposable)
}
fun handle(event: MapEvent) {
sm.dispatch(event)
}
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Device (TaxiMeter)
interface TaxiMeter {
val status: Observable
}
private val sm: StateMachine by lazy {...}
init {
meter.status.subscribe {
handle(MapEvent.ChangeMeterStatus(it))
}.addTo(disposable)
}
fun handle(event: MapEvent) {
sm.dispatch(event)
}
EventHandler
Event#handle
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Device (TaxiMeter)
interface TaxiMeter {
val status: Observable
}
EventHandler
private val sm: StateMachine by lazy {...}
init {
meter.status.subscribe {
handle(MapEvent.ChangeMeterStatus(it))
}.addTo(disposable)
}
fun handle(event: MapEvent) {
sm.dispatch(event)
}
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stateMachine(initial = PickupState.ON_ACCEPT) {
state(PickupState.ON_ACCEPT) {
edge(
next = PickupState.ON_PICKING
)
}
state(PickupState.ON_PICKING,
entry = {
dispatcher.dispatch(MapAction.ChangeCameraFocus(MapAction.Focus.SELF))
launch {
repository.command(ChangeTaxiBusinessStatus.PICK_UP)
}
}
) {
edge {
dispatcher.dispatch(TaxiAction.ArrivePickupArea)
}
}
}
StateMachine
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stateMachine(initial = PickupState.ON_ACCEPT) {
state(PickupState.ON_ACCEPT) {
edge(
next = PickupState.ON_PICKING
)
}
state(PickupState.ON_PICKING,
entry = {
dispatcher.dispatch(MapAction.ChangeCameraFocus(MapAction.Focus.SELF))
launch {
repository.command(ChangeTaxiBusinessStatus.PICK_UP)
}
}
) {
edge {
dispatcher.dispatch(TaxiAction.ArrivePickupArea)
}
}
}
StateMachine
Event
State
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stateMachine(initial = PickupState.ON_ACCEPT) {
state(PickupState.ON_ACCEPT) {
edge(
next = PickupState.ON_PICKING
)
}
state(PickupState.ON_PICKING,
entry = {
launch {
repository.command(ChangeTaxiBusinessStatus.PICK_UP)
dispatcher.dispatch(MapAction.ChangeCameraFocus(MapAction.Focus.SELF))
}
}
) {
edge {
dispatcher.dispatch(TaxiAction.ArrivePickupArea)
}
}
}
StateMachine
Repository
Action
Dispatcher
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Dispatcher
private val subject = PublishSubject.create().toSerialized()
fun dispatch(action: Action) {
subject.onNext(action)
}
fun on(clazz: Class): Observable =
subject.ofType(clazz)
.observeOn(AndroidSchedulers.mainThread())
.hide()
Store
val focusObservable: Observable =
dispatcher.on(MapAction.ChangeCameraFocus::class.
java
)
.scan(Focus.UNKNOWN) { _, action ->
when (action.focus) {
MapAction.Focus.SELF -> Focus.SELF
else -> Focus.DESTINATION
}
}
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Dispatcher
private val subject = PublishSubject.create().toSerialized()
fun dispatch(action: Action) {
subject.onNext(action)
}
fun on(clazz: Class): Observable =
subject.ofType(clazz)
.observeOn(AndroidSchedulers.mainThread())
.hide()
Store
val focusObservable: Observable =
dispatcher.on(MapAction.ChangeCameraFocus::class.
java
)
.scan(Focus.UNKNOWN) { _, action ->
when (action.focus) {
MapAction.Focus.SELF -> Focus.SELF
else -> Focus.DESTINATION
}
}
#dispatch
Action
subject
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Dispatcher
private val subject = PublishSubject.create().toSerialized()
fun dispatch(action: Action) {
subject.onNext(action)
}
fun on(clazz: Class): Observable =
subject.ofType(clazz)
.observeOn(AndroidSchedulers.mainThread())
.hide()
Store
val focusObservable: Observable =
dispatcher.on(MapAction.ChangeCameraFocus::class.
java
)
.scan(Focus.UNKNOWN) { _, action ->
when (action.focus) {
MapAction.Focus.SELF -> Focus.SELF
else -> Focus.DESTINATION
}
}
Store
Action
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UI
// For example
store.focusObservable.toLiveData() //
.observe(this, Observer {
moveCameraToDriver()
})
private fun moveCameraToDriver() {
ownPosition.value?.let {
val latlng = LatLng(it.location.latitude, it.location.longitude)
val cameraPosition = CameraPosition(latlng, ZOOM_LEVEL_DEFAULT, TILT, 0f)
val update = CameraUpdateFactory.newCameraPosition(cameraPosition)
map.moveCamera(update)
}
}
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UI
// For example
store.focusObservable.toLiveData() //
.observe(this, Observer {
moveCameraToDriver()
})
private fun moveCameraToDriver() {
ownPosition.value?.let {
val latlng = LatLng(it.location.latitude, it.location.longitude)
val cameraPosition = CameraPosition(latlng, ZOOM_LEVEL_DEFAULT, TILT, 0f)
val update = CameraUpdateFactory.newCameraPosition(cameraPosition)
map.moveCamera(update)
}
}
LiveData
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310
2.
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!
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- " #,8
);
:.(&
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!