Blocks and Managers - ADC Brazil - 2017

Transcript

1. BLOCKS AND MANAGERS Reactive UI Pattern Ygor Barboza Thales Machado
2. • ~80 Activities • ~70 Fragments • 5k Unit tests • 800 Instrumental tests INTRODUCTION Nubank Jan 2017 Jan 2015 350 k 100 k Jan 2016 200 k 1 2 3 5 6 8
3. MVP Model View Presenter
4. • Model - the data layer. Responsible for handling the business logic and communication with the network and database layers. • View - the UI layer. Displays the data and notifies the Presenter about user actions. • Presenter - retrieves the data from the Model, applies the UI logic and manages the state of the View, decides what to display and reacts to user input notifications from the View. MVP Roles
5. class FeedRepository(feedConnector: FeedConnector, feedDB: FeedDB) { public Single<List<FeedItem>> getFeed(){ ... } } MVP Model Implementation
6. class FeedActivity(): Activity, FeedView { override fun showFeed(feedList: List<FeedItem>){ ... } override fun onRefreshListener() = refreshBtn.clicks() } MVP View Implementation
7. class FeedPresenter(feedRepository: FeedRepository, feedView: FeedView) { init { feedView.onRefreshListener.subscribe { ... } feedRepository.getFeed().subscribe { feedView.showFeed(it) } } } MVP Presenter Implementation
8. MVP Diagram Presenter Model Request View Data User interactions UI Logic
9. MVP Problem Presenter Model Request View Data User interactions UI Logic
10. MVP Problem Presenter Model Request View Data User interactions UI Logic
11. MVVM Model View ViewModel
12. MVVM Diagram Presenter Model Request View Data User interactions UI Logic
13. MVVM Diagram Model Request View Data User interactions Observable<State> ViewModel
14. • Model - the data layer. Responsible for handling the business logic and communication with the network and database layers. • View - the UI layer. Listen to a stream of data and notifies the ViewModel about user actions. • ViewModel - Abstracts the data source and reacts to user input notifications from the View. Its like a Model for the View (Like the name suggests). MVVM Roles
15. MVVM Model Implementation class FeedRepository(feedConnector: FeedConnector, feedDB: FeedDB) { public Single<List<FeedItem>> getFeed(){ ... } }
16. <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"> <data> <variable name="viewModel" type="com.nubank.FeedViewModel"/> </data> <TextView android:text=“@{viewModel.feedDataObservable.listSize}”/> <Button android:onClick="@{() -> viewModel.refresh()}"/> </layout> MVVM View Implementation (Data binding way)
17. <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"> <data> <variable name="viewModel" type="com.nubank.FeedViewModel"/> </data> <TextView android:text=“@{viewModel.feedDataObservable.listSize}”/> <Button android:onClick="@{() -> viewModel.refresh()}"/> </layout> MVVM View Implementation (Data binding way)
18. <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"> <data> <variable name="viewModel" type="com.nubank.FeedViewModel"/> </data> <TextView android:text=“@{viewModel.feedDataObservable.listSize}”/> <Button android:onClick="@{() -> viewModel.refresh()}"/> </layout> MVVM View Implementation (Data binding way)
19. class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() init { feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) } } fun refresh() { ... } } MVVM ViewModel Implementation (Data binding way)
20. MVVM ViewModel Implementation (Data binding way) class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() init { feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) } } fun refresh() { ... } }
21. class FeedActivity(): Activity { override fun onResume() { viewModel.feedDataSubject .subscribe(this::updateView) } fun onRefreshListener() = refreshBtn.clicks() } MVVM View Implementation (Reactive way)
22. MVVM ViewModel Implementation (Reactive Way) class FeedViewModel(private val feedRepository: FeedRepository) { val feedDataSubject = PublishSubject.create<FeedData>() init { feedView.onRefreshListener.subscribe { ... } feedRepository .getFeed() .map { feedData(it) } .subscribe { feedDataSubject.onNext(it) } } }
23. MVVM ViewModel Implementation (Reactive Way) class FeedViewModel(private val feedRepository: FeedRepository) { val feedDataSubject = PublishSubject.create<FeedData>() init { feedView.onRefreshListener.subscribe { ... } feedRepository .getFeed() .map { feedData(it) } .subscribe { feedDataSubject.onNext(it) } } }
24. BLOCKS Our MVVM version
25. BLOCKS Problem with original MVVM pattern ViewModel
26. BLOCKS Problem with original MVVM pattern ViewModel
27. BLOCKS Problem with original MVVM pattern ViewModel
28. BLOCKS Problem with original MVVM pattern ViewModel
29. BLOCKS Problem with original MVVM pattern (show me the code) class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() init { feedView.onRefreshListener.subscribe { ... } feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) } } }
30. BLOCKS Problem with original MVVM pattern (show me the code) class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() init { feedView.onRefreshListener.subscribe { ... } val hasValue = feedRepository.hasValue() feedContentObservable.set(hasValue) shimmerObservable.set(!hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) } } }
31. class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() init { feedView.onRefreshListener.subscribe { ... } val hasValue = feedRepository.hasValue() feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) } } }
32. class FeedViewModel(private val feedRepository: FeedRepository) { val feedObservable = ObservableField<FeedData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() init { feedView.onRefreshListener.subscribe { ... } retryObservable.set(false) val hasValue = feedRepository.hasValue() feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } }
33. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() init { feedView.onRefreshListener.subscribe { ... } retryObservable.set(false) var hasValue = feedRepository.hasValue() feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } }
34. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } }
35. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } } And it goes on
36. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun addSearch() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } } And it goes on Adding Search
37. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun addSearch() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun paginate() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } } And it goes on Adding Search Pagination
38. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun addSearch() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun paginate() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } fun collapse() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } } And it goes on Adding Search Pagination Collapsable Toolbar
39. class FeedViewModel( private val feedRepository: FeedRepository, private val bannerRepository: BannerRepository ) { val feedObservable = ObservableField<FeedData>() val bannerObservable = ObservableField<BannerData>() val bannerShimmerObservable = ObservableField<BannerData>() val bannerRetryObservable = ObservableField<BannerData>() val feedContentObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() val shimmerObservable = ObservableField<Boolean>() val retryObservable = ObservableField<Boolean>() var hasValue = feedRepository.hasValue() init { feedView.onRefreshListener.subscribe { ... } feedView.retryListener.subscribe { loadFeed() } feedView.bannerRetryListener.subscribe { loadBanners() } } fun loadFeed() { retryObservable.set(false) feedContentObservable.set(hasValue) shimmerObservable.set(! hasValue) feedRepository .getFeed() .map { feedData(it) } .subscribe { feedObservable.set(it) shimmerObservable.set(false) retryObservable.set(false) hasValue = true }, { feedContentObservable.set(false) shimmerObservable.set(false) retryObservable.set(!hasValue) } } fun loadBanners() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it) } else { (. show some toast) } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun addSearch() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerRetryObservable.set(false) if (!hasValue) { bannerObservable.set(it } }, { bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } fun paginate() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() .map { bannerData(it) } .subscribe { bannerShimmerObservable.set(false) bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } fun collapse() { bannerShimmerObservable.set(hasValue) bannerRetryObservable.set(false) bannerRepository .getData() bannerShimmerObservable.set(false) if (!hasValue) { bannerRetryObservable.set(true) } else { (. show some toast) } } } } And it goes on Adding Search Pagination Collapsable Toolbar
40. BLOCKS Solution Search Rewards Banner Card Banner Stats Banner Feed
41. BLOCKS Solution Search Rewards Banner Card Banner Stats Banner Feed
42. BLOCKS Solution Search Rewards Banner Card Banner Stats Banner Feed
43. BLOCKS Solution Search Rewards Banner Card Banner Stats Banner Feed
44. BLOCKS Solution Search Rewards Banner Card Banner Stats Banner Feed
45. BLOCKS Diagram
46. BLOCKS Diagram
47. BLOCKS Diagram
48. BLOCKS Diagram
49. data class FeedViewModel( private val feedItems: List<FeedItem> ) { val feedItemCells = feedItems.map{ FeedItemCell(it) } } BLOCKS ViewModel
50. class FeedViewBinder( root: ViewGroup ) { private val feedRV = root.feeRV fun bindViews(vm: FeedViewModel) { val adapter = FeedAdapter() feedRV.setAdapter(adapter) adapter.setItems(vm.feedItemCells) } } BLOCKS ViewBinder
51. class FeedController(viewBinder: FeedViewBinder, 
 manager: FeedManager) { fun onCreate() { manager.getObservable() .subscribe { emitViewModel(FeedViewModel(it.events)) } } } BLOCKS Controller - Here’s the fun
52. class FeedController(viewBinder: FeedViewBinder, manager: FeedManager) { private val filterSubject = BehaviorSubject.createDefault("") fun onCreate() { Observable.combineLatest( manager.getObservable(), filterSubject.hide(), ::filterItemsBySearch ).subscribe { emitViewModel(FeedViewModel(it.events)) } } fun filter(filterObservable: Observable<String>) { filterObservable.subscribe { filterSubject.onNext(it) } } } BLOCKS Controller - Here’s the fun
53. class HighlightsControllerHolder(feedController: FeedController, searchController: SearchController) { fun onCreate() { searchController.onCreate() with(feedController) { onCreate() onFilter(searchController.onTextChanges()) } } } BLOCKS Controller Holder - Link what’s needed
54. class FeedActivity(): Activity { @Inject lateinit var highLightsController: HighlightsControllerHolder override fun onCreate() { highLightsController.onCreate() } } BLOCKS Activity - just there because it need to exist
55. BLOCKS Dependency Rule View Model
56. View Binder BLOCKS Dependency Rule View Model
57. Controller View Binder BLOCKS Dependency Rule View Model
58. Controller Holder Controller View Binder BLOCKS Dependency Rule View Model
59. Activity / Fragment Controller Holder Controller View Binder BLOCKS Dependency Rule View Model
60. MANAGERS Our hero
61. MANAGERS Previous problem Notification
 Handler Notification
62. MANAGERS Previous problem Notification
 Handler Notification
63. • Responsible for a single entity • Centralize all and any way of change the entity in a single place • Spread the model changes using reactive flows in a way that every screen that listen to the changes will be notified • Cache the object in a way that, if needed, we can load the last saved version of the entity MANAGERS Concept
64. abstract class BaseManager<MODEL : Any>() { private abstract val cache: CacheManager fun getObservable(): Observable<MODEL> fun getSingle(): Single<MODEL> . . . fun refresh(): Completable { ... } } MANAGERS Base class
65. abstract class BaseManager<MODEL : Any>() { private abstract val cache: CacheManager fun getObservable(): Observable<MODEL> fun getSingle(): Single<MODEL> . . . fun refresh(): Completable { ... } } MANAGERS Base class
66. abstract class BaseManager<MODEL : Any>() { private abstract val cache: CacheManager fun getObservable(): Observable<MODEL> fun getSingle(): Single<MODEL> . . . fun refresh(): Completable { ... } } MANAGERS Base class
67. abstract class BaseManager<MODEL : Any>() { private abstract val cache: CacheManager fun getObservable(): Observable<MODEL> fun getSingle(): Single<MODEL> . . . fun refresh(): Completable { ... } } MANAGERS Base class
68. MANAGERS Implementation with Manager class FeedController(viewBinder: FeedViewBinder, manager: FeedManager) { fun onCreate() { viewBinder.onRefreshListener.subscribe { refresh() } manager.getObservable() .map { FeedViewModel(it) } .subscribe { emitViewModel(it) } } fun refresh() = manager.refresh().subscribe() }
69. MANAGERS Implementation with Manager class FeedController(viewBinder: FeedViewBinder, manager: FeedManager) { fun onCreate() { viewBinder.onRefreshListener.subscribe { refresh() } manager.getObservable() .map { FeedViewModel(it) } .subscribe { emitViewModel(it) } } fun refresh() = manager.refresh().subscribe() }
70. MANAGERS Implementation with Manager class FeedController(viewBinder: FeedViewBinder, manager: FeedManager) { fun onCreate() { viewBinder.onRefreshListener.subscribe { refresh() } manager.getObservable() .map { FeedViewModel(it) } .subscribe { emitViewModel(it) } } fun refresh() = manager.refresh().subscribe() }
71. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 AccountConnector
72. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 AccountConnector O bservable Observable O bservable Cached Account Cached Account Cached Account
73. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 I want more limit AccountConnector O bservable Observable O bservable
74. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 AccountConnector Request more limit O bservable Observable O bservable
75. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 AccountConnector New Account O bservable Observable O bservable
76. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3 AccountConnector O bservable Observable O bservable NewAccount New Account New Account
77. MANAGERS The result AccountManager Controller 1 Controller 2 Controller 3
78. REFERENCES Android Architecture Patterns - Florina Muntenescu
 https://upday.github.io/blog/model-view-controller/
79. @ygorbarboza @thalescm thalescm ygorbarboza THANK YOU