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!ActivityΛվળͨ͠
@lvla0805
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MWMB
MWMB
Ѫᖒ๖ (Moyuru Aizawa)
- Lead Kotlin engineer of Pairs Div. Eureka, Inc.
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- Pairs
- Couples
- a member of IAC/Match Group
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Pairs
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Pairs
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·ͣཧͷ͓૬खΛ୳͠·͢
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ؾʹͳΔ͓૬खʹ͍͍Ͷ!ΛૹΔ
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Ϛονϯάޙɺϝοηʔδަ
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αϯϓϧίʔυʹؔͯ͠
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PairsJava/Kotlin͕ࠞࡏ͍ͯ͠·͢ɻ
Αͬͯɺαϯϓϧίʔυʹ͓͍ͯ྆
ݴޠ͕ར༻͞Ε͍ͯ·͢ɻ
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Kotlin͕ۤखͳϑϨϯζ
ͷΈͳ͞Μ
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ͱ͠ΐ͔ΜͰKotlinʹ͍ͭ
ͯ͠Β·͠ΐʔ!
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Instanceੜ
final Serval serval = new Serval();
Kaban kaban = new Kaban();
val serval = Serval()
var kaban = Kaban()
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Instanceੜ
final Serval serval = new Serval();
Kaban kaban = new Kaban();
val serval = Serval()
var kaban = Kaban()
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Instanceੜ
final Serval serval = new Serval();
Kaban kaban = new Kaban();
val serval = Serval()
var kaban = Kaban()
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Instanceੜ
final Serval serval = new Serval();
Kaban kaban = new Kaban();
val serval = Serval()
var kaban = Kaban()
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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
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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
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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
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Lambda
observable.map(new Func1() {
@Override
public Bar call(Foo foo) {
return foo.toBar();
}
});
observable.map(foo -> foo.toBar());
observable.map { foo -> foo.toBar() }
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Lambda
observable.map(new Func1() {
@Override
public Bar call(Foo foo) {
return foo.toBar();
}
});
observable.map(foo -> foo.toBar());
observable.map { foo -> foo.toBar() }
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Lambda
observable.map(new Func1() {
@Override
public Bar call(Foo foo) {
return foo.toBar();
}
});
observable.map(foo -> foo.toBar());
observable.map { foo -> foo.toBar() }
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Lambda
observable.map(new Func1() {
@Override
public Bar call(Foo foo) {
return foo.toBar();
}
});
observable.map(foo -> foo.toBar());
observable.map { foo -> foo.toBar() }
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ຊ
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Pairsʹ
!Activity͕͍ͬͺ͍ ͩͬͨ
͢͝ʔ͍
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ར༻ٕज़ʹ͍ͭͯ
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ٕज़֓ཁ
Languages Java/Kotlin
Network Retrofit2, OkHttp3
O/R Mapper Orma
Reactive Programming RxJava1
Dependency Injection Dagger2
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!Activity?
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‣ ϏδωεϩδοΫΛ͍࣋ͬͯΔ
‣ IOॲཧ͕͕ͬͭΓॻ͔Ε͍ͯΔ
‣ ͱʹ͔͘ߦ͕ଟ͍
!
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ϏδωεϩδοΫ
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ϏδωεϩδοΫ
if (isPaidUser) {
// ༗ྉձһͷΈѻ͑ΔػೳΛ༗ޮԽ͢Δ
} else {
// ༗ྉձһͷΈѻ͑ΔػೳΛແޮԽ͢Δ
}
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ϏδωεϩδοΫ
if (isLikedByPartner) {
// ͓૬ख͔Β͍͍Ͷ!ΛΒ͍ͬͯΔঢ়ଶ
} else if (isLikedByMe) {
// ͍͍Ͷ!Λ͍ͯ͠Δঢ়ଶ
} else if (isLikedWithMessage) {
// ϝοηʔδ͖͍͍Ͷ!Λ͍ͯ͠Δঢ়ଶ
} else if (isLooked) {
// ΈͯͶ!Λ͍ͯ͠Δঢ়ଶ
} else if (isLookedWithMessage) {
// ϝοηʔδ͖ΈͯͶ!Λ͍ͯ͠Δঢ়ଶ
} else if (isHidden) {
// ඇදࣔઃఆΛͨ͠ޙ
} else if (isBlocked) {
// ϒϩοΫઃఆΛͨ͠ޙ
} else if (...) {
...
}
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‣ ͜Ε͚ͩͳΒখͦ͞͏ʹΈ͑Δ͕…
‣ ϏδωεϩδοΫ͕ॏͳΓ߹ͬͯɺΞϓϦέʔγϣ
ϯ͕࡞ΒΕΔ
‣ ෳͷϏδωεϩδοΫ͕Activity/Fragment/Adapter
ʹ͋;Εͯ͘ΔͱɺίʔυΛ͏ͷ͕ࠔʹ…
ϏδωεϩδοΫ
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IO
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IO
userClient.fetchMathingUsers()
.subscribeOnIo()
.doOnNex { users -> userDao.insertAll(users) }
.onError { userDao.findAll() }
.observeOnMain()
.subscribe(
{ users -> showUsers(users) },
{ ... })
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ͱʹ͔͘ߦ͕ଟ͍ɺͭΒ͍
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ఢ!ActivityͷΈͳΒͣ
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‣ ΊͪΌͪ͘Όͳ
‣ ਆΫϥε
‣ static͓͡͞Μ
ͭΒΈ
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ΊͪΌͪ͘Όͳ
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‣ Converter
‣ JsonΛϚοϐϯάͨ͠Ϋϥε͔ΒɺΞϓϦͰ
͍͍͢σʔλΫϥεʹมΛߦ͏Ϋϥε
‣ มΛߦ͏͜ͱͷΈ͕ͷͣ
ΊͪΌͪ͘Όͳ
class UserConverter {
fun convert(res: MatchingUsersResponse): List {
return res.users.map { resUser -> User(resUser.name, …) }
}
}
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ͳͷ͕ͩ….
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‣ Convert͢ΔաఔͰϢʔβʔͷϑΟϧλϦϯάΛߦ͏
Converter
ΊͪΌͪ͘Όͳ
class UserConverter {
fun convert(res: MatchingUsersResponse): List {
return res.users.map { user -> User(user.name, user.age, ...) }
.filter { … }
}
}
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No content
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ਆΫϥε
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XxxManager
ਆΫϥε
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‣ SearchManager
‣ ݕࡧ݅ͷอ࣋
‣ ݕࡧ݁Ռͷอ࣋
‣ ݕࡧ݁ՌΛऔಘ͢Δॲཧͷཧ
‣ …
ਆΫϥε
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‣ ਆʹک͑
‣ ਆʹفΓ
‣ ਆʹ໋Λ๋͛Δʑ
ਆΫϥε
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Static͓͡͞Μ
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‣ APIDatabaseΛૢ࡞͢ΔϝιουͳͲɺ͍ͨΔͱ͜
ΖͰstaticϝιουΛར༻࣮ͨ͠ʹͳ͍ͬͯͨɻ
static͓͡͞Μ
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static͓͡͞Μ
public static Observable> fetchMatchingUsers() {
return PairsClient.getRetrofit()
.create(MatchingUsersService.class)
.fetch()
...
}
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static͓͡͞Μ
public static Observable> fetchMatchingUsers() {
return PairsClient.getRetrofit()
.create(MatchingUsersService.class)
.fetch()
...
}
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static͓͡͞Μ
public static Observable> fetchMatchingUsers() {
return PairsClient.getRetrofit()
.create(MatchingUsersService.class)
.fetch()
...
}
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static͓͡͞Μ
public static Observable> fetchMatchingUsers() {
return PairsClient.getRetrofit()
.create(MatchingUsersService.class)
.fetch()
...
}
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‣ ύϑΥʔϚϯε͕ΑΖ͘͠ͳ͍
‣ “staticϝιουͰstaticϝιουΛͬͯRetrofitΛ
औಘ͠ɺInterfaceͷ࣮ͷੜΛߦ͏”ͱ͍͏ӅΕͨ
ೖྗ͕͋Δɻ
‣ ӅΕ͍ͯͯϞοΫ͕Ͱ͖ͳ͍
‣ UnitςετΉ͔͍ͣ͠…
static͓͡͞Μ
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static͓͡͞Μ
class MatchingUsersClient(
private val service: MatchingUsersService) {
fun fetch(): Observable> {
return service.fetch().....
}
}
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͍!Ͳ͏ʹ͔͠ͳ͍ͱ!
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EMERGENCY!!
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‣ Retrofit1->2ͷҠߦ࣌
‣ ຊདྷPOST͖͢ͱ͜ΖΛGETʹ͍ͯͨ͠
‣ ॏཁͳػೳ͕͑ͳ͍ঢ়ଶʹ
Emergency
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‣ ࠓޙಉࣦ͡ഊΛ܁Γฦ͞ͳ͍ͨΊʹ?
‣ खಈͷςετ૿͢ͷҙຯ͕ແ͍ΑͶ
‣ ςετίʔυॻ͍ͯࣗಈԽ͍ͨ͠ΑͶɻ
Emergency
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ςετίʔυ
ॻ͖·͠ΐ͏!
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…
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ॻ͚ͳ͘ͳ͍?
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‣ ӅΕͨೖྗग़ྗ
‣ ؔΘΓ߹͏staticϝιου
‣ DBʹґଘ͍ͯ͠ΔClient
‣ ෳͷׂΛ࣋ͪɺ༷ʑͳঢ়ଶΛ࣋ͭਆʑ
‣ Activityʹॻ͔ΕͨϏδωεϩδοΫୡ
ςετͰ͖ͳ͍ΑͶ
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‣ ͷׂ
‣
!Activityͷվળ
‣ ϏδωεϩδοΫͷഉআ
‣ IOͷഉআ
‣ Staticϝιου܈ͱਆʑʹҾୀ͍ͯͨͩ͘͠
՝
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େʑతϦϑΝΫλϦϯά
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Before
Entity/Dao
Database API
Client
Activity / Fragment
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‣ ͝ͱʹϨΠϠʔΛ͚Δ
‣ Retrofit͕ੜ͢ΔInterfaceͷ࣮Λհͯ͠ɺServerͱΓऔΓ
Λߦ͏Client
‣ DatabaseͱΓऔΓΛߦ͏Dao
‣ σʔλιʔεΛӅṭ͠ɺσʔλͷอଘ/औಘΛߦ͏Repository
‣ ϏδωεϩδοΫΛ࣮ݱ͢ΔUseCase
‣ UseCaseͱViewΛͭͳ͙Presenter
‣ ֤ϨΠϠʔObservableΛհͯ͠ΓऔΓΛߦ͏
ͷׂ
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After
Dao
Database API
Client
Repository
UseCase
Presenter
Activity / Fragment
Service
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After
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Retrofit͕࣮͢ΔInterface
Database API
Service
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After
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Serverͱͷσʔλૹड৴
Database API
Service
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After
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
DBͱͷσʔλૹड৴
Database API
Service
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After
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
σʔλऔಘ/อଘ
Database API
Service
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After
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
ϏδωεϩδοΫ
Database API
Service
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After
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
ϏδωεϩδοΫͷར༻
Activity/Fragmentͷૢ࡞
Database API
Service
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After
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
Viewͷૢ࡞
Activityґଘͷػೳͷૢ࡞
Database API
Service
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After
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Observable
Observable
Observable
Observable
Observable
Observable
Database API
Service
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Matching
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Client
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Database API
Service
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‣ Retrofitʹੜͤͨ͞Interfaceͷ࣮Λར༻ͯ͠௨৴Λ
ߦ͏
‣ JsonͷϚοϐϯάΫϥεΛΞϓϦͰར༻͍͢͠
σʔλΫϥεʹม͢Δ
Client
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Client
class UserClient(private val service: UserService) {
fun fetchMatchingUsers(offset: Int):Observable> {
return service.fetchMatchingUsers(offset)
.map { response -> UserConverter.convert(response) }
}
}
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Client
class UserClient(private val service: UserService) {
fun fetchMatchingUsers(offset: Int):Observable> {
return service.fetchMatchingUsers(offset)
.map { response -> UserConverter.convert(response) }
}
}
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Client
class UserClient(private val service: UserService) {
fun fetchMatchingUsers(offset: Int):Observable> {
return service.fetchMatchingUsers(offset)
.map { response -> UserConverter.convert(response) }
}
}
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Client Test
val userService = mock()
val client = UserClient(userService)
userService.invoked.thenReturn(...)
client.fetchMathingUsers().test().run {
...
}
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Dao
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Database API
Service
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‣ OrmaDatabaseΛར༻ͯ͠Database͔Βσʔλͷऔಘ
Λߦ͏
‣ OrmaDatabaseΛར༻ͯ͠DatabaseσʔλΛอଘ͢
Δ
Dao
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Dao
class UserDao(private val orma: OrmaDatabase) {
fun insert(users: List) {
orma.transactionSync {
orma.prepareInsertIntoUser(OnConflict.REPLACE)
.executeAll(contributors)
}
}
fun findAll(): Observable> {
return orma.selectFromUser()
.executeAsObservable()
.toList()
}
}
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Dao
class UserDao(private val orma: OrmaDatabase) {
fun insert(users: List) {
orma.transactionSync {
orma.prepareInsertIntoUser(OnConflict.REPLACE)
.executeAll(contributors)
}
}
fun findAll(): Observable> {
return orma.selectFromUser()
.executeAsObservable()
.toList()
}
}
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Dao
class UserDao(private val orma: OrmaDatabase) {
fun insert(users: List) {
orma.transactionSync {
orma.prepareInsertIntoUser(OnConflict.REPLACE)
.executeAll(contributors)
}
}
fun findAll(): Observable> {
return orma.selectFromUser()
.executeAsObservable()
.toList()
}
}
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Dao
class UserDao(private val orma: OrmaDatabase) {
fun insert(users: List) {
orma.transactionSync {
orma.prepareInsertIntoUser(OnConflict.REPLACE)
.executeAll(contributors)
}
}
fun findAll(): Observable> {
return orma.selectFromUser()
.executeAsObservable()
.toList()
}
}
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Dao Test
val dao = UserDao(orma)
dao.insert(...)
orma.selectFromUser()
.executeAsObservable()
.toList()
.test()
.run {
...
}
orma.insertIntoUser()…
dao.findAll().test().run {
...
}
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Repository
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
Database API
Service
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‣ ClientͱDaoͷͲͪΒ͔͔ΒσʔλͷऔಘΛߦ͏
‣ Clientܦ༝ͰAPI͔ΒσʔλͷऔಘΛߦͬͨ߹ʹ
DatabaseʹσʔλΛอଘ͢Δ
Repository
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UserRepository
class UserRepository(
private val dao: UserDao,
private val userClient: UserClient) {
fun getMatchingUsers(offset: Int):Observable> {
return userClient.fetchMatchingUsers(offset)
.doOnNext { users -> dao.insert(users) }
.onErrorResumeNext { dao.findAll() }
}
}
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UseCase
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
Database API
Service
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‣ ϏδωεϩδοΫΛ࣮ݱ͢Δ
UseCase
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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
}
}
}
}
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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
}
}
}
}
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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
}
}
}
}
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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
}
}
}
}
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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
}
}
}
}
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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
}
}
}
}
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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
}
}
}
}
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Presenter
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
Database API
Service
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‣ UseCaseΛར༻ͯ͠ϏδωεϩδοΫΛ࣮ݱ͢Δ
‣ ϏδωεϩδοΫͷөΛActivity/Fragmentʹରͯ͠
ߦ͏
‣ Activity/FragmentͱPresenterͷఏڙ͢ΔContractΠ
ϯλʔϑΣʔεΛհͯ͠ߦ͏
Presenter
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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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)
fun showProgress()
fun hideProgress()
}
}
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Activity,
Fragment
Dao
Repository
UseCase
Presenter
Activity / Fragment
Client
Database API
Service
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‣ Viewͷૢ࡞
‣ Activityʹґଘͨ͠ػೳͷϋϯυϦϯά
‣ ͜ΕΒΛPresenterͷ࣋ͭContractΠϯλʔϑΣʔεΛ
հͯ͠ఏڙ͢Δ
Activity/Fragment
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Activity/Fragment
class MatchingFragment: Fragment(), MatchingPresenter.Contract {
…
override fun onViewCreated(...) {
…
presenter.init()
}
override fun showMatchingUsers(users: List) {
listView.adapter = MatchingUsersAdapter(activity, users)
}
override fun showProgress() {
progress.toVisible()
}
override fun hideProgress() {
progress.toGone()
}
}
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Activity/Fragment
class MatchingFragment: Fragment(), MatchingPresenter.Contract {
…
override fun onViewCreated(...) {
…
presenter.init()
}
override fun showMatchingUsers(users: List) {
listView.adapter = MatchingUsersAdapter(activity, users)
}
override fun showProgress() {
progress.toVisible()
}
override fun hideProgress() {
progress.toGone()
}
}
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Activity/Fragment
class MatchingFragment: Fragment(), MatchingPresenter.Contract {
…
override fun onViewCreated(...) {
…
presenter.init()
}
override fun showMatchingUsers(users: List) {
listView.adapter = MatchingUsersAdapter(activity, users)
}
override fun showProgress() {
progress.toVisible()
}
override fun hideProgress() {
progress.toGone()
}
}
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Dependency Injection
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ґଘؔGraph
Dao Client
Repository
UseCase
Presenter
Activity / Fragment
Orma
Context
Service
Retrofit
OkHttp
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‣ ΫϥεͰґଘ͢ΔΫϥεͷΠϯελϯεੜΛߦ͏
ͷྑ͘ͳ͍
‣ ςετ࣌ʹΓସ͑Δͱ͍ͬͨࣄ͕Ͱ͖ͳ͍
‣ ֎Ͱੜ͠ɺίϯετϥΫλ·ͨϝϯόʔʹରͯ͠
ґଘੑΛ͍ΕΔ
‣ ґଘੑΛཧ͢ΔΫϥεΛ࡞Δ
‣ ґଘੑΛཧ͢ΔΫϥεͷ࣮/ϝϯς͕େม
‣ DIΛ͓͏ -> Dagger2
DI
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Α͠!
͜Μͳײ͡Ͱߦ͜͏!
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‣ Pairs JP AndroidνʔϜ࣌3ਓ
‣ 2ਓͦͷ··ࢪࡦͷ࣮
‣ ࢲ͕୲
‣ Pairs Globalͷ@yuyakaidoʹखͬͯΒ͏
‣ ܭ 1.5ਓ͘Β͍Ͱ࣮
Ͳ͏ਐΊ͍ͯͬͨͷ͔
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‣ ϝΠϯετϦʔϜͱผʹrefactorϒϥϯν
‣ ϝΠϯετϦʔϜͱͷίϯϑϦΫτΛආ͚ΔͨΊʹ
Activity/Fragmentͷมߋඞཁ࠷ݶʹ͑ͨ
‣ PresenterΛ࣮͠ɺActivity/FragmentʹContractΠ
ϯλʔϑΣʔεΛ࣮͠Α͏ͱࢥ͏ͱɺมߋ͕
େʹͳΔͷͰPresenterͷ࣮ޙճ͠ʹ
‣ Activity/FragmentҰ୴UseCaseΛͰѻ͏͜ͱΛ
ڐ༰
Ͳ͏ਐΊ͍ͯͬͨͷ͔
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Ͳ͏ਐΊ͍ͯͬͨͷ͔
‣ ґଘؔGraphͷϧʔτ͔Βมߋ
ΛՃ͍͑ͯ͘
‣ ·ͣDagger2ͷModule/
ComponentΛ࡞ɻ
‣ OkHttp, Retrofit, Ormaͷprovideϝ
ιουΛ࣮
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‣ σʔλιʔε͝ͱʹDao, Client, RepositoryΛ࣮
‣ UserDao, UserClient, UserRepository
‣ MeDao, MeClient, MeRepository
‣ …
‣ σʔλιʔε͝ͱʹɺRepository͕࣮ྃ࣍ୈ
UseCaseΛ࣮
‣ Activity/FragmentʹมߋΛՃ͑Δ
Ͳ͏ਐΊ͍ͯͬͨͷ͔
‘͓૬ख’ͷσʔλΫϥε
‘ࣗ’ͷσʔλΫϥε
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‣ ͍͖ͳΓΰʔϧΛࢦ͞ͳ͍
‣ ग़དྷΔݶΓਖ਼ৗಈ࡞͢Δঢ়ଶΛอͭ
‣ খ͍͞มߋΛੵΈॏͶ͍ͯ͘
‣ ΠϯλʔϑΣʔε͕มΘΔͱݺͼग़͠ݩͷมߋඞ
ཁʹͳΔͷͰɺҰ୴ճΓಓͯ͠తΛୡ͢Δ
‣ ͦͷޙʹΠϯλʔϑΣʔεΛमਖ਼ͯ͠ݺͼग़͠ݩ
ͷมߋΛߦ͍ͬͯ͘
େͳ͜ͱ
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‣ ৽͍͠ઃܭʹؔͯ͠νʔϜϝϯόʔ͕ཧղͰ͖Δ·Ͱ
ͬ͘͡Γͱڭ͑Δ
‣ ͍ͭͰಡΈฦͤΔΑ͏ʹɺQiita:teamͳͲʹ·ͱΊ
͓ͯ͘
େͳ͜ͱ
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1.5ϲ݄ޙ…
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Release
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վળޙ
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‣ ςετίʔυ͕֨ஈʹॻ͖͘͢ͳͬͨ
‣ શମͷݟ௨͕͠ྑ͘ͳͬͨ
‣ ԿॲʹɺԿΛॻ͚Α͍ͷ͔͕͔Γ͍͢
‣ ԿॲʹɺԿ͕͋Δͷ͔͕͔Γ͍͢
‣ ϥΠϒϥϦͷࡌͤସ͕͑༰қʹͳΓͦ͏
‣ e.g. ORMΛࡌͤସ͍͑ͨͱͳͬͨΒDaoͷมߋ
͚ͩͰ݁͢Δ
͜ͷ࣮ͷϝϦοτ
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‣ Ϋϥεɺϝιου͕ଟ͍
‣ Dex Countࢯʙ
‣ ࣮ίετ
‣ ֶशίετ
͜ͷ࣮ͷσϝϦοτ
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Conclusion
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‣ Dao, Client, Repository, UseCaseͳͲ͝ͱʹϨΠ
ϠʔΛ͚ͨ
‣ ModelͱViewͷؒʹPresenterΛઃ͚ͯViewͱModelΛ
໌֬ʹ͚Δ
‣ Dagger2ʹґଘੑͷղܾΛҕৡ͢Δ
‣ σʔλιʔε͝ͱʹԼͷϨΠϠʔ͔Βॱʹ࣮͍ͯ͠
͘
‣ ϝϯόʔͷϨΫνϟʔ͔ܽ͞ͳ͍
‣ จͱͯ͠͠ɺ͍ͭͰݟฦ͢Α͏ʹͨ͠
·ͱΊ
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Thank you