MVPアーキテクチャ使いたい

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UIςετݮΒ͍ͨ͠ =MVPΞʔΩςΫνϟ࢖͍͍ͨ hisaichi5518

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஫ҙ

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ϩδοΫͱ͸ • ϏδωεϩδοΫ • ϓϨθϯςʔγϣϯϩδοΫ

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ϓϨθϯςʔγϣϯϩδοΫ Ϣʔβʔ͔ΒೖྗΛड͚ औΓɺϏδωεϩδοΫ ʹ౉͢

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ϏδωεϩδοΫ APIΛୟ͍ͯɺ஋Λฦ͢

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ϏδωεϩδοΫ σʔλϕʔεΛୟ͍ͯɺ ஋Λฦ͢

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ϓϨθϯςʔγϣϯϩδοΫ ͦΕ͔Βฦ͖ͬͯͨ஋Λ ੔ܗͯ͠දࣔ͢Δ

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๻͕ʮϩδοΫʯͱݴ͏࣌͸ɺ ͜ͷ2छྨΛࢦ͠·͢ɻ

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! ?

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ͳͥΞʔΩςΫνϟΛ࠾༻͢Δͷ͔?

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ݱঢ়ͱཧ૝ͷΪϟοϓΛ ຒΊΔͨΊͷํ๏ͱ͠ ͯɺΞʔΩςΫνϟΛ࠾ ༻͍ͨ͠

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ݱঢ়

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UIςετ͹͔Γॻ͍͍ͯ ͯർฐ͕ͪ͠

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ཧ૝

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୯ମςετΛॻ͘ UIςετগͳΊ

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ͳͥUIςετ͹͔Γॻ͔͟ΔΛ͑ͳ͍͔?

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androidTestͰͳ͍ͱಈ ͔ͳ͍Ϋϥεͷதʹςε τ͍ͨ͠΋ͷ͕͋Δ

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ͳͥ୯ମςετͰಈ͔ͳ͍Ϋϥεͷதʹςετ͍ͨ͠΋ͷ͕͋Δ?

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ͻͱͭͷΫϥεͷ੹຿͕ େ͖͗͢ɻΫϥεͷ੹຿ Λখ͘͞ग़དྷ͍ͯͳ͍ɻ

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ͳͥ੹຿Λখ͘͞ग़དྷ͍ͯͳ͍ͷ͔?

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Ϋϥε͕ԿΛ୲౰͢΂͖ ͔ɺܾ·͍ͬͯͳ͍͔Β

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ͭ·Γ ཧ૝ͱݱ࣮ͷΪϟοϓΛ ຒΊΔʹ͸

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֤Ϋϥεͷ੹຿Λখ͘͞ ͯ͋͛͠Δඞཁ͕͋Γ

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ͦͷͨΊʹ ܾ·ΓࣄΛ࡞Δࣄ͕ඞཁ

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ͦͷܾ·Γࣄ͕ ΞʔΩςΫνϟ

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ʮMVPΞʔΩςΫνϟʯͱ͸?

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MVCͷ೿ੜܥ

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MVC

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Model-View-Controller

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݁࿦: Androidʹ޲͍ͯ ͳ͍

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Model = ;ͭ͏ͷΫϥε

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View = Activity

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Controller = Activity

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View + Controller = Activity

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ActivityʹϓϨθϯςʔ γϣϯϩδοΫ͕ೖͬͯ ͠·͏

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݁࿦: Androidʹ޲͍ͯ ͳ͍

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MVP

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Model-View-Presenter

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Model

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Model • ϏδωεϩδοΫΛॻ͘ • Presenterʹґଘ͠·ͤΜ • Viewʹґଘ͠·ͤΜ

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View

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View • ը໘ͷදࣔ/ߋ৽ɾϢʔβʔͷೖྗͷड͚ޱ • Ϣʔβʔೖྗ͸ɺPresenterʹ౉͢ • ෳ਺ͷViewΛ·ͱΊΔ܅Ͱ͋Δ • TextView, Toolbar ...

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Presenter

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Presenter • ϓϨθϯςʔγϣϯϩδοΫΛॻ͘ • View͔Β౉͞ΕͨϢʔβʔ͔ΒͷೖྗΛModelʹ౉͢ • Model͔Βฦ͖ͬͯͨ஋Λ΋ͱʹViewͷߋ৽Λߦ͏ • Viewͷߋ৽͸ɺInterfaceΛܦ༝ͯ͠ߦ͏

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MVPΞʔΩςΫνϟ͸ɺ Activity͔ΒϓϨθʔς ʔγϣϯϩδοΫΛ Presenterʹൈ͖ग़ͤΔ

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จࣈ͡ΌΘ͔ΒΜ!ਤͰ!

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Ҿ༻: https://github.com/rallat/EffectiveAndroid/tree/mvp

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ਤ͡ΌΘ͔ΒΜ!ίʔυͰ!

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(ྫ)ϢʔβʔΛऔಘ໊ͯ͠લΛදࣔ͢Δ

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View interfaceΛఆٛ͢Δ public interface UserView { void showName(String name); void showError(Exception exception); }

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View PresenterΛݺͼग़͢ public class UserActivity extends AppCompatActivity implements UserView { @Override protected void onCreate(Bundle savedInstanceState) { int userId = ...; (new UserPresenter(this)).fetchUser(userId); } @Override public void showName(String name) { mTextView.setText(name); } @Override public void showError(...) { ... } }

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Presenter public class UserPresenter { UserView mView; public UserPresenter(UserView view) { mView = view; } public void fetchUser(int userId) { ApiClient.getInstance().create(UsersService.class).fetch(userId, new Callback() { @Override public void success(User user, Response response) { mView.showName(user.getName()); } @Override public void failure(RetrofitError error) { mView.showError(error); } }); } }

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Model ࠓͷApiClient.javaͱ࣮૷͕ಉ͡ͳͷͰུ

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ͳͥɺMVPΞʔΩςΫνϟ͸ςετ͕͠΍͍͢ͷ͔?

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Viewͷߋ৽͸Interface Λ௨ͯ͡ߦΘΕΔ

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ͭ·ΓɺInterfaceΛܧ ঝ͍ͯ͠ΔView΋Ͳ͖ ͑͋͞Ε͹ɺPresenter ͷςετ͸Ͱ͖Δɻ

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Test public class UserPresenterTest { @Test public void testFetchUser() throws Exception { final AtomicBoolean called = new AtomicBoolean(); mMockClient.mock("/v4/users/\\d.json").to(200, "user.json"); class UserViewTest implements UserView { @Override public void showName(String name) { called.set(true); assertThat(name).isEqualTo("hisaichi5518"); } } UserPresenter presenter = new UserPresenter(new UserViewTest()); presenter.fetchUser(1); assertThat(called.get()).isEqualTo(true); } }

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Activityʹґଘ͠ͳ͘ͳ ͬͨͷͰɺϓϨθϯςʔ γϣϯϩδοΫΛ୯ମς ετͰॻ͚Δʂʂ̍

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UIςετͰർฐ͠ͳ͍!

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ͳͷͰMVPΞʔΩςΫν ϟΛ࢖͍͍ͨ

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·ͱΊ

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·ͱΊ • ݱঢ়ɺΫϥεͷ੹຿͕େ͖͗ͯ͢ɺϓϨθϯςʔγϣϯϩδ οΫΛUIςετͰςετͤ͟ΔΛ͑ͳ͍ • ཧ૝͸ɺΫϥεͷ੹຿Λখ͘͞͠ɺϩδοΫ͸୯ମςετͰ ςετ͍ͨ͠ • MVPΞʔΩςΫνϟΛ࠾༻͠ɺΫϥεͷ੹຿Λ໌֬ʹܾΊɺ ୯ମςετʹد͍ͤͯ͘

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·ͱΊ • MVPΞʔΩςΫνϟ͸ɺActivity͔ΒϓϨθϯςʔγϣϯϩδ οΫΛ෼཭͢Δ • ϓϨθϯςʔγϣϯϩδοΫΛ୯ମςετͰॻ͚ΔΑ͏ʹͳ ΔͷͰɺUIςετΛॻ͘ྔ͸ݮΔ

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!!!!!!!!!!! ർฐͤͣʹྑ͍΋ͷ࡞Δκʂ !!!!!!!!!!!

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ࢀߟ • hisaichi5518/minne-android • rallat/EffectiveAndroid • AndroidΦʔϧελʔζͰClean Architectureʹ͍ͭͯൃද͠ ͖ͯͨ&ࢀߟϦϯΫू • AndroidͰ͸MVCΑΓMVPͷํ͕͍͍͔΋͠Εͳ͍

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࣭ٙԠ౴

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ͲͷΑ͏ʹMVPΞʔΩςΫνϟΛར༻ ͍͔ͯ͘͠? • ཧ૝: ςετΛॻ͍͔ͯΒˠϦϑΝΫλϦϯά • ݱ࣮: PresenterΛར༻͢ΔΑ͏ʹϦϑΝΫλϦϯάˠςετ Λॻ͘ • ·ͣ͸ɺݴ͍ग़ͬ͠΃ͷ๻͕΍Δͭ΋Γ

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ΞʔΩςΫνϟΛ࠾༻͢Δ্Ͱͷํ਑ • ཧղ͍ͯ͠ͳ͍΋ͷ͸࢖Θͳ͍ • ཧղ͠ʹ͍͘΋ͷ͸࢖Θͳ͍ • ่յͦ͠͏ͳͷ͸࢖Θͳ͍ • ࣮ࡍʹίʔυΛॻ͍ͯ൑அ͢Δ • ݱ࣮త͔ɺ͕ॏཁ • ૣ͗͢Δ࠷దԽ͸͠ͳ͍

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Viewʹ͋ͨΔΫϥε͸? • Activity • Fragment • CustomView ͳͲɻద࣌൑அ͍ͯ͘͠ɻ