💪🏻Activityを改善した話 at DroidKaigi 2017

Transcript

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 { … } } }
43. None

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