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iOSDC 2018 Reject Conference days2
Manual DI
With ReactorKit
20.Oct.2018 Masakazu sano
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Masakazu Sano
(@kz56cd)
- iOS Developer
- Freelance
- like:
-
-
-
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Masakazu Sano
(@kz56cd)
- iOS Developer
- Freelance
- like:
- snowboard …
- DbD (ps4) …
- ཪϚοαʔδ …
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"
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01:
ಋೖ
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DIɺͬͯ·͔͢ʁ
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ґଘੑͷೖʢ͍ͦΜ͍ͤͷͪΎ͏ʹΎ͏ɺ
ӳ: Dependency injectionʣͱɺ
ίϯϙʔωϯτؒͷґଘؔΛϓϩάϥϜͷ
ιʔείʔυ͔Βഉআ͠ɺ֎෦ͷઃఆϑΝΠ
ϧͳͲͰೖͰ͖ΔΑ͏ʹ͢ΔιϑτΣΞ
ύλʔϯͰ͋Δɻӳޠͷ಄จࣈ͔ΒDIͱུ͞
ΕΔɻ
ґଘੑͷೖ - Wikipedia
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iOSΞϓϦʹ͓͚Δ
Manual DIͱ
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iOSΞϓϦʹ͓͚ΔManual DIͱ
• Πϯελϯεੜͷॴ / λΠϛϯά͕ཧͰ͖ɺ
҆৺ײ͕͋Δ
• segueΛΘͳͯ͘ࡁΉ
• ςετ͘͢͠ͳΔ (DIViewଆ)
• ಋೖ؆୯
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ಋೖͨ͠ಈػʹ͍ͭͯ
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ʢׂѪʣ
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DIͷجຊ֓೦
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DIͷجຊ֓೦
• Έ߹Θͤͯ࡞Δ
• Coordinator pattern
• Factory pattern
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App Architecture by Manual DI (@yoshikuni_kato)
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Coordinatorύλʔϯͷ࣮ફ (@yoshikuni_kato)
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02:
ͬͯΈΔ (DIฤ)
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DIͷߏʹ͍ͭͯ
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֤DIύʔπͷʹ͍ͭͯ
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֤DIύʔπͷʹ͍ͭͯ
ViewControllerFactory
• ֤ViewController / Reactor ΛΠχγϟϥΠζɺฦ͢
• ComponentsΛอ࣋
• ΠχγϟϥΠζ࣌ʹඞཁͳServiceΛηοτ͢Δ
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֤DIύʔπͷʹ͍ͭͯ
ViewControllerFactory
func favoriteTop() -> FavoritesViewController {
let viewController =
StoryboardScene.FavoritesViewController.initialScene.instantiate()
viewController.reactor = FavoritesViewReactor(
favoriteService: components.favoriteService,
userDefaultsService: components.userDefaultsService,
errorHandler: components.errorHandler
)
return viewController
}
protocol ViewControllerFactoryType {
func favoriteTop() -> FavoritesViewController
}
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֤DIύʔπͷʹ͍ͭͯ
CoordinatorFactory
• ֤Coordinator ΛΠχγϟϥΠζ͠ɺฦ͢
• ComponentsɺViewControllerFactoryΛอ࣋
• ʢViewControllerFactoryͱࣅͨߏʣ
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֤DIύʔπͷʹ͍ͭͯ
CoordinatorFactory
func favoriteCoordinator() -> FavoriteCoordinator {
return FavoriteCoordinator(
viewControllerFactory: viewControllerFactory
)
}
protocol CoordinatorFactoryType {
func favoriteCoordinator() -> FavoriteCoordinator
}
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֤DIύʔπͷʹ͍ͭͯ
Components
• ֤ServiceΛอ࣋
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֤DIύʔπͷʹ͍ͭͯ
Service
• ΞϓϦͷ֤ػೳΛΓग़ͨ͠ͷ
• ʮ͓ؾʹೖΓʯʮࣸਅߘʯػೳͳͲ…
• APIͱͷΓͱΓServiceΛܦ༝͢Δ
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֤DIύʔπͷʹ͍ͭͯ
Coordinator
• ը໘άϧʔϓͷॳظը໘දࣔɺϧʔςΟϯάΛ୲͏
• άϧʔϓλϒφϏήʔγϣϯຖʹ۠ΔͱΑ͍
• ViewControllerFactory, ʢՕॴʹΑͬͯʣ
CoordinatorFactoryΛอ࣋
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֤DIύʔπͷʹ͍ͭͯ
Coordinator
protocol ViewControllerCoordinator {
var presenter: UIViewController { get }
func start()
}
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Coordinator
func start() {
let viewController = viewControllerFactory.favoriteTop()
navigationController.pushViewController(viewController,
animated: true)
_ = viewController.reactor?
.routeSelected
.subscribe(onNext: { [weak self] route in
guard let self = self,
let route = route else {
return
}
switch route {
case .photoDetail(let photoId):
self.pushPhotoDetail(photoId: photoId)
}
})
}
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֤DIύʔπͷʹ͍ͭͯ
Presentable
ΞϓϦΛઃܭ͍ͯ͘͠ͱɺ
ෳͷCoordinatorͰॏෳͯ͠ද͍ࣔͨ͠ը໘ ͕Ͱͯ͘Δ
• ͦΕΒPresentableܦ༝Ͱݺͼग़͢
• ͍͍ͨCoordinatorʹର͠ɺProtocol-Orientedʹͯର
Ԡͤ͞Δ
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03:
ͬͯΈΔ (ϧʔςΟϯάฤ)
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ͦͷલʹ
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ReactorKit
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Routing
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ViewController
final class FavoritesViewController: UIViewController, StoryboardView {
@IBOutlet weak var tableView: UITableView!
var disposeBag = DisposeBag()
override func viewDidLoad() {
super.viewDidLoad()
}
}
// MARK: - ReactorKit
extension FavoritesViewController {
func bind(reactor: FavoritesViewReactor) {
// Action
self.tableView.rx.itemSelected
.map { Reactor.Action.tapFavoritePhoto(row: $0.row) }
.bind(to: reactor.action)
.disposed(by: disposeBag)
// State
}
}
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protocol FavoritesViewRouting {
var routeSelected: Observable { get }
}
enum FavoritesViewRouter {
case photoDetail(photoId: Int)
}
extension FavoritesViewReactor: FavoritesViewRouting {
}
Reactor
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final class FavoritesViewReactor: Reactor {
enum Action {
case tapFavoritePhoto(row: Int)
}
enum Mutation {
}
struct State {
var favoriteIds: [Int]
}
let routeSelected: Observable
let initialState: State
private let userDefaultsService: UserDefaultsService
private var routeSelectedSubject =
PublishSubject()
init(userDefaultsService: UserDefaultsService) {
self.userDefaultsService = userDefaultsService
initialState = State(favoriteIds:
userDefaultsService.getFavoriteIds())
routeSelected = routeSelectedSubject.asObservable()
}
}
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final class FavoritesViewReactor: Reactor {
func mutate(action: Action) -> Observable {
switch action {
case .tapFavoritePhoto(let row):
routeSelectedSubject.onNext(
.spaceDetail(photoId: currentState.favoriteIds[row]!)
)
return Observable.empty()
}
}
func reduce(
state: State,
mutation: Mutation
) -> State {
switch mutation {
// no mutation cases
}
return state
}
}
extension FavoritesViewReactor: FavoritesViewRouting {
}
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DI(v1) ͷʂ
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ຊʹ͜ΕͰΑ͍ͷ͔ʁ
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04:
ߋʹൃలͤͯ͞ΈΔ
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ReactorKitΒ͍͠DIͱ
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ݱঢ়
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ʢຊͬͪ͜ͷํ͕ྑ͘ͳ͍ͩΖ͏͔ʣ
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ReactorKitΒ͍͠DIͱ
վྑͷྲྀΕ
1. Reactor ͷมߋ
2. ViewController ͷมߋ
3. ରԠ͢ΔCoordinator ͷมߋ (ϧʔςΟϯάՕॴ)
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1. Reactor ͷมߋ
final class FavoritesViewReactor: Reactor {
enum Action {
case actViewWillAppear
case tapFavoritePhoto(row: Int)
}
enum Mutation {
case setRoute(FavoriteViewRouter?)
}
struct State {
var favoriteIds: [Int]
}
let routeSelected: Observable
let initialState: State
private let userDefaultsService: UserDefaultsService
private var routeSelectedSubject =
PublishSubject()
// initলུ
}
Add
Add
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1. Reactor ͷมߋ
final class FavoritesViewReactor: Reactor {
enum Action {
case actViewWillAppear
case tapFavoritePhoto(row: Int)
}
enum Mutation {
case setRoute(FavoriteViewRouter?)
}
struct State {
var favoriteIds: [Int]
}
let routeSelected: Observable
let initialState: State
private let userDefaultsService: UserDefaultsService
private var routeSelectedSubject =
PublishSubject()
// initলུ
}
Replace (into VC)
Replace (into VC)
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func mutate(action: Action) -> Observable {
switch action {
case .actViewWillAppear:
return Observable.just(.setRoute(nil))
case .tapFavoritePhoto(let row):
return Observable.just(
.setRoute(
.spaceDetail(
photoId: currentState.favoriteIds[row]!
)
)
)
}
}
func reduce(
state: State,
mutation: Mutation
) -> State {
var newState = state
switch mutation {
case .setRoute(let route):
newState.route = route
}
return state
}
Add
Add
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2. ViewController ͷมߋ
Add
Add
final class FavoritesViewController: UIViewController,
StoryboardView {
@IBOutlet weak var tableView: UITableView!
private let viewWillAppearSubject = PublishSubject()
private var routeSelectedSubject =
PublishSubject()
var disposeBag = DisposeBag()
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
viewWillAppearSubject.onNext(())
}
}
extension FavoritesViewController: FavoritesViewRouting {
var routeSelected: Observable {
return routeSelectedSubject.asObservable()
}
}
Replace (by Reactor)
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2. ViewController ͷมߋ
Add
Add
final class FavoritesViewController: UIViewController,
StoryboardView {
@IBOutlet weak var tableView: UITableView!
private let viewWillAppearSubject = PublishSubject()
private var routeSelectedSubject =
PublishSubject()
var disposeBag = DisposeBag()
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
viewWillAppearSubject.onNext(())
}
}
extension FavoritesViewController: FavoritesViewRouting {
var routeSelected: Observable {
return routeSelectedSubject.asObservable()
}
}
Add
Add
Add
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// MARK: - ReactorKit
extension FavoritesViewController {
func bind(reactor: FavoritesViewReactor) {
// Action
viewWillAppearSubject
.map { Reactor.Action.actViewWillAppear }
.bind(to: reactor.action)
.disposed(by: disposeBag)
self.tableView.rx.itemSelected
.map { Reactor.Action.tapFavoritePhoto(row: $0.row) }
.bind(to: reactor.action)
.disposed(by: disposeBag)
// State
reactor.state.map { $0.route }
.distinctUntilChanged()
.filter { $0 != nil }
.subscribe(onNext: { [weak self] in
self?.routeSelectedSubject.onNext($0!)
})
.disposed(by: disposeBag)
}
}
Add
Add
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3. ରԠ͢ΔCoordinator ͷมߋ (ϧʔςΟϯάՕॴ)
func start() {
let viewController = viewControllerFactory.favoriteTop()
navigationController.pushViewController(viewController,
animated: true)
// NOTE: mod routing (replace reactor -> VC)
_ = viewController
.routeSelected
.subscribe(onNext: { [weak self] route in
guard let self = self else { return }
switch route {
case .photoDetail(let photoId):
self.pushPhotoDetail(photoId: photoId)
}
})
.disposed(by: disposeBag)
}
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3. ରԠ͢ΔCoordinator ͷมߋ (ϧʔςΟϯάՕॴ)
func start() {
let viewController = viewControllerFactory.favoriteTop()
navigationController.pushViewController(viewController,
animated: true)
// NOTE: mod routing (replace reactor -> VC)
_ = viewController
.routeSelected
.subscribe(onNext: { [weak self] route in
guard let self = self else { return }
switch route {
case .photoDetail(let photoId):
self.pushPhotoDetail(photoId: photoId)
}
})
.disposed(by: disposeBag)
}
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DI(v2) ͷʂ
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·ͱΊ
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·ͱΊ
• DIͷಋೖ͘͠ͳ͍
• ϕωϑΟοτ͋ΔͷͰɺҰಋೖΛݕ౼͢ΔͱΑ
͍ͱࢥ͍·͢
• ʢݸਓతͳҙݟͱͯ͠ʣv1͕μϝͱࢥ͍ͬͯͳ͍
• νʔϜͰ߹ҙΛͱΓɺͲͪΒ͔౷ҰͰ͖ΕOK
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·ͱΊ
ReactorKitΛ௨ͯ͠ɺ
ʮઃܭʹ͍ͭͯνʔϜͰ͕ٞ׆ൃʹͳΔʯ
ͱͨ͠Βɺͱͯྑ͍ͱࢥ͏
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͝੩ௌ
͋Γ͕ͱ͏͍͟͝·ͨ͠