💪🏻Activityを改善した話 at DroidKaigi 2017

DroidKaigi2017

TwitterID変えました。@lvla0805 -> @MoyuruAizawa

1. !ActivityΛվળͨ͠࿩ @lvla0805
2. MWMB
   MWMB Ѫᖒ
   ๖ (Moyuru Aizawa) - Lead Kotlin engineer of Pairs Div. Eureka, Inc.
3. - Pairs - Couples - a member of IAC/Match Group
4. Pairs
5. Pairs
6. ·ͣ͸ཧ૝ͷ͓૬खΛ୳͠·͢
7. ؾʹͳΔ͓૬खʹ͍͍Ͷ!ΛૹΔ
8. Ϛονϯάޙɺϝοηʔδަ׵
9. αϯϓϧίʔυʹؔͯ͠
10. Pairs͸Java/Kotlin͕ࠞࡏ͍ͯ͠·͢ɻ Αͬͯɺαϯϓϧίʔυʹ͓͍ͯ΋྆ ݴޠ͕ར༻͞Ε͍ͯ·͢ɻ
11. Kotlin͕ۤखͳϑϨϯζ ͷΈͳ͞Μ
12. ͱ͠ΐ͔ΜͰKotlinʹ͍ͭ ͯ͠Β΂·͠ΐʔ!
13. Instanceੜ੒ final Serval serval = new Serval(); Kaban kaban = new Kaban(); val serval = Serval() var kaban = Kaban()
14. Instanceੜ੒ final Serval serval = new Serval(); Kaban kaban = new Kaban(); val serval = Serval() var kaban = Kaban()
15. Instanceੜ੒ final Serval serval = new Serval(); Kaban kaban = new Kaban(); val serval = Serval() var kaban = Kaban()
16. Instanceੜ੒ final Serval serval = new Serval(); Kaban kaban = new Kaban(); val serval = Serval() var kaban = Kaban()
17. Class public class JapariBus { private final Trailer trailer; private final Container container; public JapariBus(Trailer trailer, Container container) { this.trailer = trailer; this.container = container; } } class JapariBus(private val trailer: Trailer, private val container: Container) Έ͔͡ʔ͍
18. Class public class JapariBus { private final Trailer trailer; private final Container container; public JapariBus(Trailer trailer, Container container) { this.trailer = trailer; this.container = container; } } class JapariBus(private val trailer: Trailer, private val container: Container) Έ͔͡ʔ͍
19. Class public class JapariBus { private final Trailer trailer; private final Container container; public JapariBus(Trailer trailer, Container container) { this.trailer = trailer; this.container = container; } } class JapariBus(private val trailer: Trailer, private val container: Container) Έ͔͡ʔ͍
20. Lambda observable.map(new Func1<Foo, Bar>() { @Override public Bar call(Foo foo) { return foo.toBar(); } }); observable.map(foo -> foo.toBar()); observable.map { foo -> foo.toBar() }
21. Lambda observable.map(new Func1<Foo, Bar>() { @Override public Bar call(Foo foo) { return foo.toBar(); } }); observable.map(foo -> foo.toBar()); observable.map { foo -> foo.toBar() }
22. Lambda observable.map(new Func1<Foo, Bar>() { @Override public Bar call(Foo foo) { return foo.toBar(); } }); observable.map(foo -> foo.toBar()); observable.map { foo -> foo.toBar() }
23. Lambda observable.map(new Func1<Foo, Bar>() { @Override public Bar call(Foo foo) { return foo.toBar(); } }); observable.map(foo -> foo.toBar()); observable.map { foo -> foo.toBar() }
24. ຊ୊
25. Pairsʹ͸
    !Activity͕͍ͬͺ͍ ͩͬͨ  ͢͝ʔ͍
26. ར༻ٕज़ʹ͍ͭͯ
27. ٕज़֓ཁ Languages Java/Kotlin Network Retrofit2, OkHttp3 O/R Mapper Orma Reactive Programming RxJava1 Dependency Injection Dagger2
28. !Activity?
29. ‣ ϏδωεϩδοΫΛ͍࣋ͬͯΔ ‣ IOॲཧ͕͕ͬͭΓॻ͔Ε͍ͯΔ ‣ ͱʹ͔͘ߦ਺͕ଟ͍ !
30. ϏδωεϩδοΫ
31. ϏδωεϩδοΫ if (isPaidUser) { // ༗ྉձһͷΈѻ͑ΔػೳΛ༗ޮԽ͢Δ } else { // ༗ྉձһͷΈѻ͑ΔػೳΛແޮԽ͢Δ }
32. ϏδωεϩδοΫ if (isLikedByPartner) { // ͓૬ख͔Β͍͍Ͷ!Λ΋Β͍ͬͯΔঢ়ଶ } else if (isLikedByMe) { // ͍͍Ͷ!Λ͍ͯ͠Δঢ়ଶ } else if (isLikedWithMessage) { // ϝοηʔδ෇͖͍͍Ͷ!Λ͍ͯ͠Δঢ়ଶ } else if (isLooked) { // ΈͯͶ!Λ͍ͯ͠Δঢ়ଶ } else if (isLookedWithMessage) { // ϝοηʔδ෇͖ΈͯͶ!Λ͍ͯ͠Δঢ়ଶ } else if (isHidden) { // ඇදࣔઃఆΛͨ͠௚ޙ } else if (isBlocked) { // ϒϩοΫઃఆΛͨ͠௚ޙ } else if (...) { ... }
33. ‣ ͜Ε͚ͩͳΒ໰୊͸খͦ͞͏ʹΈ͑Δ͕… ‣ ϏδωεϩδοΫ͕ॏͳΓ߹ͬͯɺΞϓϦέʔγϣ ϯ͕࡞ΒΕΔ ‣ ෳ਺ͷϏδωεϩδοΫ͕Activity/Fragment/Adapter ʹ͋;Εͯ͘ΔͱɺίʔυΛ௥͏ͷ͕ࠔ೉ʹ… ϏδωεϩδοΫ
34. IO
35. IO userClient.fetchMathingUsers() .subscribeOnIo() .doOnNex { users -> userDao.insertAll(users) } .onError { userDao.findAll() } .observeOnMain() .subscribe( { users -> showUsers(users) }, { ... })
36. ͱʹ͔͘ߦ਺͕ଟ͍ɺͭΒ͍
37. ఢ͸!ActivityͷΈͳΒͣ
38. ‣ ΊͪΌͪ͘Όͳ੹຿ ‣ ਆΫϥε ‣ static͓͡͞Μ ͭΒΈ
39. ΊͪΌͪ͘Όͳ੹຿
40. ‣ Converter ‣ JsonΛϚοϐϯάͨ͠Ϋϥε͔ΒɺΞϓϦ಺Ͱ࢖ ͍΍͍͢σʔλΫϥεʹม׵Λߦ͏Ϋϥε ‣ ม׵Λߦ͏͜ͱͷΈ͕੹຿ͷ͸ͣ ΊͪΌͪ͘Όͳ੹຿ class UserConverter { fun convert(res: MatchingUsersResponse): List<User> { return res.users.map { resUser -> User(resUser.name, …) } } }
41. ͳͷ͕ͩ….
42. ‣ Convert͢ΔաఔͰϢʔβʔͷϑΟϧλϦϯάΛߦ͏ Converter ΊͪΌͪ͘Όͳ੹຿ class UserConverter { fun convert(res: MatchingUsersResponse): List<User> { return res.users.map { user -> User(user.name, user.age, ...) } .filter { … } } }
44. ਆΫϥε
45. XxxManager ਆΫϥε
46. ‣ SearchManager ‣ ݕࡧ৚݅ͷอ࣋ ‣ ݕࡧ݁Ռͷอ࣋ ‣ ݕࡧ݁ՌΛऔಘ͢Δॲཧͷ؅ཧ ‣ … ਆΫϥε
47. ‣ ਆʹک͑ ‣ ਆʹفΓ ‣ ਆʹ໋Λ๋͛Δ೔ʑ ਆΫϥε
48. Static͓͡͞Μ
49. ‣ API΍DatabaseΛૢ࡞͢ΔϝιουͳͲɺ͍ͨΔͱ͜ ΖͰstaticϝιουΛར༻࣮ͨ͠૷ʹͳ͍ͬͯͨɻ static͓͡͞Μ
50. static͓͡͞Μ public static Observable<List<User>> fetchMatchingUsers() { return PairsClient.getRetrofit() .create(MatchingUsersService.class) .fetch() ... }
51. static͓͡͞Μ public static Observable<List<User>> fetchMatchingUsers() { return PairsClient.getRetrofit() .create(MatchingUsersService.class) .fetch() ... }
52. static͓͡͞Μ public static Observable<List<User>> fetchMatchingUsers() { return PairsClient.getRetrofit() .create(MatchingUsersService.class) .fetch() ... }
53. static͓͡͞Μ public static Observable<List<User>> fetchMatchingUsers() { return PairsClient.getRetrofit() .create(MatchingUsersService.class) .fetch() ... }
54. ‣ ύϑΥʔϚϯε͕ΑΖ͘͠ͳ͍ ‣ “staticϝιου಺ͰstaticϝιουΛ࢖ͬͯRetrofitΛ औಘ͠ɺInterfaceͷ࣮૷ͷੜ੒Λߦ͏”ͱ͍͏ӅΕͨ ೖྗ஋͕͋Δɻ ‣ ӅΕ͍ͯͯ͸ϞοΫ͕Ͱ͖ͳ͍ ‣ UnitςετΉ͔͍ͣ͠… static͓͡͞Μ
55. static͓͡͞Μ class MatchingUsersClient( private val service: MatchingUsersService) { fun fetch(): Observable<List<User>> { return service.fetch()..... } }
56. ΍͹͍!Ͳ͏ʹ͔͠ͳ͍ͱ!
57. EMERGENCY!!
58. ‣ Retrofit1->2΁ͷҠߦ࣌ ‣ ຊདྷPOST͢΂͖ͱ͜ΖΛGETʹ͍ͯͨ͠ ‣ ॏཁͳػೳ͕࢖͑ͳ͍ঢ়ଶʹ Emergency
59. ‣ ࠓޙಉࣦ͡ഊΛ܁Γฦ͞ͳ͍ͨΊʹ͸? ‣ खಈͷςετ૿΍͢ͷ͸ҙຯ͕ແ͍ΑͶ ‣ ςετίʔυॻ͍ͯࣗಈԽ͍ͨ͠ΑͶɻ Emergency
60. ςετίʔυ
 ॻ͖·͠ΐ͏!
61. …
62. ॻ͚ͳ͘ͳ͍?
63. ‣ ӅΕͨೖྗ஋΍ग़ྗ஋ ‣ ؔΘΓ߹͏staticϝιου ‣ DBʹґଘ͍ͯ͠ΔClient ‣ ෳ਺ͷ໾ׂΛ࣋ͪɺ༷ʑͳঢ়ଶΛ࣋ͭਆʑ ‣ Activityʹॻ͔ΕͨϏδωεϩδοΫୡ ςετͰ͖ͳ͍ΑͶ
64. ‣ ੹຿ͷ෼ׂ ‣ !Activityͷվળ ‣ ϏδωεϩδοΫͷഉআ ‣ IOͷഉআ ‣ Staticϝιου܈ͱਆʑʹҾୀ͍ͯͨͩ͘͠ ՝୊
65. େʑతϦϑΝΫλϦϯά
66. Before Entity/Dao Database API Client Activity / Fragment
67. ‣ ੹຿͝ͱʹϨΠϠʔΛ෼͚Δ ‣ Retrofit͕ੜ੒͢ΔInterfaceͷ࣮૷Λհͯ͠ɺServerͱ΍ΓऔΓ Λߦ͏Client ‣ Databaseͱ΍ΓऔΓΛߦ͏Dao ‣ σʔλιʔεΛӅṭ͠ɺσʔλͷอଘ/औಘΛߦ͏Repository ‣ ϏδωεϩδοΫΛ࣮ݱ͢ΔUseCase ‣ UseCaseͱViewΛͭͳ͙Presenter ‣ ֤ϨΠϠʔ͸ObservableΛհͯ͠΍ΓऔΓΛߦ͏ ੹຿ͷ෼ׂ
68. After Dao Database API Client Repository UseCase Presenter Activity / Fragment Service
69. After Dao Client Repository UseCase Presenter Activity / Fragment Retrofit͕࣮૷͢ΔInterface Database API Service
70. After Dao Client Repository UseCase Presenter Activity / Fragment Serverͱͷσʔλૹड৴ Database API Service
71. After Dao Client Repository UseCase Presenter Activity / Fragment DBͱͷσʔλૹड৴ Database API Service
72. After Dao Repository UseCase Presenter Activity / Fragment Client σʔλऔಘ/อଘ Database API Service
73. After Dao Repository UseCase Presenter Activity / Fragment Client ϏδωεϩδοΫ Database API Service
74. After Dao Repository UseCase Presenter Activity / Fragment Client ϏδωεϩδοΫͷར༻
 Activity/Fragmentͷૢ࡞ Database API Service
75. After Dao Repository UseCase Presenter Activity / Fragment Client Viewͷૢ࡞
 Activityґଘͷػೳͷૢ࡞ Database API Service
76. After Dao Client Repository UseCase Presenter Activity / Fragment Observable Observable Observable Observable Observable Observable Database API Service
77. Matching
78. Client Dao Client Repository UseCase Presenter Activity / Fragment Database API Service
79. ‣ Retrofitʹੜ੒ͤͨ͞Interfaceͷ࣮૷Λར༻ͯ͠௨৴Λ ߦ͏ ‣ JsonͷϚοϐϯάΫϥεΛΞϓϦ಺Ͱར༻͠΍͍͢ σʔλΫϥεʹม׵͢Δ Client
80. Client class UserClient(private val service: UserService) { fun fetchMatchingUsers(offset: Int):Observable<List<User>> { return service.fetchMatchingUsers(offset) .map { response -> UserConverter.convert(response) } } }
81. Client class UserClient(private val service: UserService) { fun fetchMatchingUsers(offset: Int):Observable<List<User>> { return service.fetchMatchingUsers(offset) .map { response -> UserConverter.convert(response) } } }
82. Client class UserClient(private val service: UserService) { fun fetchMatchingUsers(offset: Int):Observable<List<User>> { return service.fetchMatchingUsers(offset) .map { response -> UserConverter.convert(response) } } }
83. Client Test val userService = mock<UserService>() val client = UserClient(userService) userService.invoked.thenReturn(...) client.fetchMathingUsers().test().run { ... }
84. Dao Dao Client Repository UseCase Presenter Activity / Fragment Database API Service
85. ‣ OrmaDatabaseΛར༻ͯ͠Database͔Βσʔλͷऔಘ Λߦ͏ ‣ OrmaDatabaseΛར༻ͯ͠Database΁σʔλΛอଘ͢ Δ Dao
86. Dao class UserDao(private val orma: OrmaDatabase) { fun insert(users: List<User>) { orma.transactionSync { orma.prepareInsertIntoUser(OnConflict.REPLACE) .executeAll(contributors) } } fun findAll(): Observable<List<User>> { return orma.selectFromUser() .executeAsObservable() .toList() } }
87. Dao class UserDao(private val orma: OrmaDatabase) { fun insert(users: List<User>) { orma.transactionSync { orma.prepareInsertIntoUser(OnConflict.REPLACE) .executeAll(contributors) } } fun findAll(): Observable<List<User>> { return orma.selectFromUser() .executeAsObservable() .toList() } }
88. Dao class UserDao(private val orma: OrmaDatabase) { fun insert(users: List<User>) { orma.transactionSync { orma.prepareInsertIntoUser(OnConflict.REPLACE) .executeAll(contributors) } } fun findAll(): Observable<List<User>> { return orma.selectFromUser() .executeAsObservable() .toList() } }
89. Dao class UserDao(private val orma: OrmaDatabase) { fun insert(users: List<User>) { orma.transactionSync { orma.prepareInsertIntoUser(OnConflict.REPLACE) .executeAll(contributors) } } fun findAll(): Observable<List<User>> { return orma.selectFromUser() .executeAsObservable() .toList() } }
90. Dao Test val dao = UserDao(orma) dao.insert(...) orma.selectFromUser() .executeAsObservable() .toList() .test() .run { ... } orma.insertIntoUser()… dao.findAll().test().run { ... }
91. Repository Dao Repository UseCase Presenter Activity / Fragment Client Database API Service
92. ‣ ClientͱDaoͷͲͪΒ͔͔ΒσʔλͷऔಘΛߦ͏ ‣ Clientܦ༝ͰAPI͔ΒσʔλͷऔಘΛߦͬͨ৔߹ʹ͸ DatabaseʹσʔλΛอଘ͢Δ Repository
93. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
94. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
95. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
96. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
97. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
98. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
99. UserRepository class UserRepository( private val dao: UserDao, private val userClient: UserClient) { fun getMatchingUsers(offset: Int):Observable<List<User>> { return userClient.fetchMatchingUsers(offset) .doOnNext { users -> dao.insert(users) } .onErrorResumeNext { dao.findAll() } } }
100. UseCase Dao Repository UseCase Presenter Activity / Fragment Client Database API Service
101. ‣ ϏδωεϩδοΫΛ࣮ݱ͢Δ UseCase
102. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_USER } else { FacebookPublicSetting.NEITHER } } } }
103. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_USER } else { FacebookPublicSetting.NEITHER } } } }
104. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_USER } else { FacebookPublicSetting.NEITHER } } } }
105. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_USER } else { FacebookPublicSetting.NEITHER } } } }
106. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLYE_USER } else { FacebookPublicSetting.NEITHER } } } }
107. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_PARTNER } else { FacebookPublicSetting.NEITHER } } } }
108. MatchingUserUseCase class MatchingUserUseCase(private val repo: UserRepository) { fun getUsers(offset: Int) = repo.getMatchingUsers(offset) fun getFacebookPublicSetting( me: Me, user: User): FacebookPublicSetting { return if (shouldShowMeFacebook(me, user)) { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.BOTH } else { FacebookPublicSetting.ONLY_ME } } else { if (shouldShowPartnerFacebook(user)) { FacebookPublicSetting.ONLY_PARTNER } else { FacebookPublicSetting.NEITHER } } } }
109. Presenter Dao Repository UseCase Presenter Activity / Fragment Client Database API Service
110. ‣ UseCaseΛར༻ͯ͠ϏδωεϩδοΫΛ࣮ݱ͢Δ ‣ ϏδωεϩδοΫͷ൓өΛActivity/Fragmentʹରͯ͠ ߦ͏ ‣ Activity/Fragmentͱ͸Presenterͷఏڙ͢ΔContractΠ ϯλʔϑΣʔεΛհͯ͠ߦ͏ Presenter
111. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
112. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
113. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
114. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
115. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
116. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
117. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
118. Presenter class MatchingPresenter( private val contract: Contract, private val useCase: MatchingUserUseCase) { fun init() { useCase.getUsers().applySchedulers() .doOnSubscribe { contract.showProgress() } .doOnUnsubscribe { contract.hideProgress() } .subscribe( { users -> contract.showMatchingUsers(users) }, { ... } ) } interface Contract { fun showMatchingUsers(users: List<User>) fun showProgress() fun hideProgress() } }
119. Activity,
 Fragment Dao Repository UseCase Presenter Activity / Fragment Client Database API Service
120. ‣ Viewͷૢ࡞ ‣ Activityʹґଘͨ͠ػೳͷϋϯυϦϯά ‣ ͜ΕΒΛPresenterͷ࣋ͭContractΠϯλʔϑΣʔεΛ հͯ͠ఏڙ͢Δ Activity/Fragment
121. Activity/Fragment class MatchingFragment: Fragment(), MatchingPresenter.Contract { … override fun onViewCreated(...) { … presenter.init() } override fun showMatchingUsers(users: List<User>) { listView.adapter = MatchingUsersAdapter(activity, users) } override fun showProgress() { progress.toVisible() } override fun hideProgress() { progress.toGone() } }
122. Activity/Fragment class MatchingFragment: Fragment(), MatchingPresenter.Contract { … override fun onViewCreated(...) { … presenter.init() } override fun showMatchingUsers(users: List<User>) { listView.adapter = MatchingUsersAdapter(activity, users) } override fun showProgress() { progress.toVisible() } override fun hideProgress() { progress.toGone() } }
123. Activity/Fragment class MatchingFragment: Fragment(), MatchingPresenter.Contract { … override fun onViewCreated(...) { … presenter.init() } override fun showMatchingUsers(users: List<User>) { listView.adapter = MatchingUsersAdapter(activity, users) } override fun showProgress() { progress.toVisible() } override fun hideProgress() { progress.toGone() } }
124. Dependency Injection
125. ґଘؔ܎Graph Dao Client Repository UseCase Presenter Activity / Fragment Orma Context Service Retrofit OkHttp
126. ‣ Ϋϥε಺Ͱґଘ͢ΔΫϥεͷΠϯελϯεੜ੒Λߦ͏ ͷ͸ྑ͘ͳ͍ ‣ ςετ࣌ʹ੾Γସ͑Δͱ͍ͬͨࣄ͕Ͱ͖ͳ͍ ‣ ֎Ͱੜ੒͠ɺίϯετϥΫλ·ͨ͸ϝϯόʔʹରͯ͠ ґଘੑΛ͍ΕΔ ‣ ґଘੑΛ؅ཧ͢ΔΫϥεΛ࡞Δ ‣ ґଘੑΛ؅ཧ͢ΔΫϥεͷ࣮૷/ϝϯς͕େม ‣ DIΛ࢖͓͏ -> Dagger2 DI
127. Α͠!
 ͜Μͳײ͡Ͱߦ͜͏!
128. ‣ Pairs JP AndroidνʔϜ͸౰࣌3ਓ ‣ 2ਓ͸ͦͷ··ࢪࡦͷ࣮૷ ‣ ࢲ͕୲౰ ‣ Pairs Globalͷ@yuyakaidoʹ΋ख఻ͬͯ΋Β͏ ‣ ܭ 1.5ਓ͘Β͍Ͱ࣮૷ Ͳ͏ਐΊ͍ͯͬͨͷ͔
129. ‣ ϝΠϯετϦʔϜͱ͸ผʹrefactorϒϥϯν ‣ ϝΠϯετϦʔϜͱͷίϯϑϦΫτΛආ͚ΔͨΊʹ Activity/Fragment΁ͷมߋ͸ඞཁ࠷௿ݶʹ཈͑ͨ ‣ PresenterΛ࣮૷͠ɺActivity/FragmentʹContractΠ ϯλʔϑΣʔεΛ࣮૷͠Α͏ͱࢥ͏ͱɺมߋ͕๲ େʹͳΔͷͰPresenterͷ࣮૷͸ޙճ͠ʹ ‣ Activity/Fragment͸Ұ୴UseCaseΛ௚Ͱѻ͏͜ͱΛ ڐ༰ Ͳ͏ਐΊ͍ͯͬͨͷ͔
130. Ͳ͏ਐΊ͍ͯͬͨͷ͔ ‣ ґଘؔ܎Graphͷϧʔτ͔Βมߋ ΛՃ͍͑ͯ͘ ‣ ·ͣ͸Dagger2ͷModule/ ComponentΛ࡞੒ɻ ‣ OkHttp, Retrofit, Ormaͷprovideϝ ιουΛ࣮૷
131. ‣ σʔλιʔε͝ͱʹDao, Client, RepositoryΛ࣮૷ ‣ UserDao, UserClient, UserRepository ‣ MeDao, MeClient, MeRepository ‣ … ‣ σʔλιʔε͝ͱʹɺRepository͕࣮૷׬ྃ࣍ୈ UseCaseΛ࣮૷ ‣ Activity/FragmentʹมߋΛՃ͑Δ Ͳ͏ਐΊ͍ͯͬͨͷ͔ ‘͓૬ख’ͷσʔλΫϥε ‘ࣗ෼’ͷσʔλΫϥε
132. ‣ ͍͖ͳΓΰʔϧΛ໨ࢦ͞ͳ͍
     ‣ ग़དྷΔݶΓਖ਼ৗಈ࡞͢Δঢ়ଶΛอͭ
     ‣ খ͍͞มߋΛੵΈॏͶ͍ͯ͘
     ‣ ΠϯλʔϑΣʔε͕มΘΔͱݺͼग़͠ݩͷมߋ΋ඞ ཁʹͳΔͷͰɺҰ୴ճΓಓͯ͠໨తΛୡ੒͢Δ
     ‣ ͦͷޙʹΠϯλʔϑΣʔεΛमਖ਼ͯ͠ݺͼग़͠ݩ΁ ͷมߋΛߦ͍ͬͯ͘ େ੾ͳ͜ͱ
133. ‣ ৽͍͠ઃܭʹؔͯ͠νʔϜϝϯόʔ͕ཧղͰ͖Δ·Ͱ ͬ͘͡Γͱڭ͑Δ ‣ ͍ͭͰ΋ಡΈฦͤΔΑ͏ʹɺQiita:teamͳͲʹ·ͱΊ ͓ͯ͘ େ੾ͳ͜ͱ
134. 1.5ϲ݄ޙ…
135. Release
136. վળޙ
137. ‣ ςετίʔυ͕֨ஈʹॻ͖΍͘͢ͳͬͨ ‣ શମͷݟ௨͕͠ྑ͘ͳͬͨ ‣ ԿॲʹɺԿΛॻ͚͹Α͍ͷ͔͕෼͔Γ΍͍͢ ‣ ԿॲʹɺԿ͕͋Δͷ͔͕෼͔Γ΍͍͢ ‣ ϥΠϒϥϦͷࡌͤସ͕͑༰қʹͳΓͦ͏ ‣ e.g. ORMΛࡌͤସ͍͑ͨͱͳͬͨΒDao΁ͷมߋ ͚ͩͰ׬݁͢Δ ͜ͷ࣮૷ͷϝϦοτ
138. ‣ Ϋϥε਺ɺϝιου਺͕ଟ͍ ‣ Dex Countࢯʙ ‣ ࣮૷ίετ ‣ ֶशίετ ͜ͷ࣮૷ͷσϝϦοτ
139. Conclusion
140. ‣ Dao, Client, Repository, UseCaseͳͲ੹຿͝ͱʹϨΠ ϠʔΛ෼͚ͨ ‣ ModelͱViewͷؒʹPresenterΛઃ͚ͯViewͱModelΛ ໌֬ʹ෼͚Δ ‣ Dagger2ʹґଘੑͷղܾΛҕৡ͢Δ ‣ σʔλιʔε͝ͱʹԼͷϨΠϠʔ͔Βॱʹ࣮૷͍ͯ͠ ͘ ‣ ϝϯόʔ΁ͷϨΫνϟʔ͸͔ܽ͞ͳ͍ ‣ จͱͯ͠࢒͠ɺ͍ͭͰ΋ݟฦ͢Α͏ʹͨ͠ ·ͱΊ
141. Thank you