droidkaigi-2017-renovation

େن໛ΞϓϦͷ Ϧϊϕʔγϣϯ ๺ଜɹྋ

๺ଜྋ 5XJUUFS!FYQFSPQFSP )BUFOBGVOOFMCJU ͜Μʹͪ͸

ژ౎ΦϑΟε

(PPHMF*0 ߦ͖·͢ w ߦ͘ਓ͍ͨΒ͓࿩͍ͤͯͩ͘͞͞!

ࠓ೔࿩͢͜ͱ w ڊେͳΞϓϦͷϦϑΝΫλϦϯάʹ͍ͭͯ w ਐΊํ w ઃܭ

ࠓ೔࿩͢͜ͱ w ๲େ͕͗ͯ࣌ؒ͢଍Γ·ͤΜ! w ͋ͱͰ͓࿩͠·ͤΜ͔ w εςοΧʔ্ࠩ͛͠·͢ʢઌண໊ʣ

େن໛

"OEPSJE "OEPSJE

"OEPSJE "OEPSJE ݹ͍ίʔυ͕࢒Γଓ͚͍ͯΔ

ϦϑΝΫλϦϯά ͍ͨ͠

ϦϑΝΫλϦϯά͍ͨ͠ w ୯७ʹίʔυ͕େ͖͍ ઃܭ͕౷Ұ͞Ε͍ͯͳ͍ w ػೳ௥ՃͰίʔυΛ௥͏࣌ؒˠ૿Ճ w pYͰίʔυΛ௥͏࣌ؒˠ૿Ճ w কདྷͷηΩϡϦςΟ͕৺഑

ϦϑΝΫλϦϯά͍ͨ͠ w ยखؒͰ΍͍ͬͯͨࠒ΋͋ͬͨ w ઃܭΛे෼ʹͱΔ͕࣌ؒͳ͔ͬͨ w ஔ͖׵͖͑Εͳ͍ʂ

ϦϑΝΫλϦϯά͍ͨ͠ w ϦϑΝΫλϦϯάʹઐ೦͢Δظ͕ؒඞཁ w ϦϑΝΫλϦϯάվΊϦϊϕʔγϣϯ

ϦϊϕʔγϣϯͷྲྀΕ

ϦϊϕʔγϣϯͷྲྀΕ w υϝΠϯ஌ࣝͷ֫ಘ w ઃܭ w ࣮૷ʢϦϑΝΫλϦϯάʣ

υϝΠϯ஌ࣝͷ֫ಘ

υϝΠϯ஌ࣝͷ֫ಘ w ੲ͔Β։ൃ͠ଓ͚͍ͯΔਓ͸͍ͳ͍ w ׬ᘳͳυϝΠϯ஌ࣝΛ୭΋͍࣋ͬͯͳ͍ w νʔϜϝϯόڞ௨ͷυϝΠϯ஌͕ࣝඞཁ

υϝΠϯ஌ࣝͷ֫ಘ ը໘Λ஌Δ

ը໘Λ஌Δ w ྺ࢙ͱͱ΋ʹը໘͕૿͑ͨ w Ͳͷը໘͔Βىಈ͞ΕɺͲΜͳը໘͕ग़Δͷ͔Λ ஌Δ w ֎෦ΞϓϦ͔Βىಈ͞Εͨ࣌༻ͷը໘ w ϩάΠϯͯ͠Δͱ಺༰͕มΘΔը໘
w Τϥʔ࣌ͷը໘

ը໘Λ஌Δ εΫϦʔϯγϣοτΛࡱΓ·͘Δ

ը໘Λ஌Δ w (SBQIWJ[ͰભҠΛՄࢹԽ

ը໘Λ஌Δ w େ͖͗͢ΔͷͰࢴʹҹ࡮

ը໘Λ஌Δ w ը໘໊ w .PEFM w 7JFX

ը໘Λ஌Δ w ը໘ͷ৘ใΛυΩϡϝϯτԽ

υϝΠϯ஌ࣝͷ֫ಘ σβΠϯҙਤͷ֬ೝ

σβΠϯҙਤͷ֬ೝ w ը໘Ұཡ͸σβΠφ΋ݟΔ w ֤෦ͷσβΠϯͷཧ༝Λ஌Δ w ඞཁͳ͍ͱ͜Ζ͸࡟Δ

σβΠϯҙਤͷ֬ೝ

ઃܭ w ϥΠϒϥϦબఆ w ΞʔΩςΫνϟͷܾఆ w αϯϓϧΞϓϦͷ࡞੒ w υΩϡϝϯτԽ w
ϦϑΝΫλϦϯά։࢝

ઃܭ ϥΠϒϥϦબఆ

ϥΠϒϥϦબఆ w ࢖ͬͯ΋ྑͦ͞͏ɺͱ͍͏ͷΛ্͍͛ͯ͘ w ઃܭͰมΘΔͨΊɺ֬ఆ͢Δͷ͕໨తͰ͸ͳ͍ w 3FUSPpU 3Y+BWB 3Y-JGFDZDMF
%BUBCJOEJOH 3FBMNʜ

ઃܭ ΞʔΩςΫνϟͷܾఆ

ΞʔΩςΫνϟͷܾఆ w ͲΜͳύϥμΠϜʹ͢Δ͔ߟ͑Δ w .7$ .71 .77. w ϥΠϒϥϦͱ΋૊Έ߹Θ͍ͤͯ͘
w ΞʔΩςΫνϟΛकΔͷ͕໨తͰ͸ͳ͍ w ඞཁʹԠͯ͡ண่͢

ઃܭ αϯϓϧΞϓϦͷ࡞੒

αϯϓϧΞϓϦͷ࡞੒ w ग़དྷ্͕ͬͨઃܭΛࢼ͢मਖ਼

ઃܭ ग़དྷ্͕ͬͨઃܭ

ओͳϥΠϒϥϦ w %BHHFS w 3FBMN w 3FUSPpU w 3FUSPMBNCEB w
3Y"OESPJE w 3Y+BWB w 3Y-JGFDZDMF

ओͳϨΠϠʔ 3FQPTJUPSZ *OUFSBDUPS 7JFX.PEFM 7JFX

લఏ w ԼͷϨΠϠʔ͸্ͷϨΠϠʔΛ஌Βͳ͍ w ϨΠϠʔͷॲཧΛ֎ʹ࿙Β͞ͳ͍ w ԼͷϨΠϠʔ্͕ͷϨΠϠʔʹ݁ՌΛ఻͑Δͱ ͖͸0CTFSWBCMFΛ࢖͏ w %BHHFSͰ*OKFDU͢Δ

3FQPTJUPSZ

3FQPTJUPSZ w &OUSZ3FQPTJUPSZͳΒ&OUSZʹؔΘΔॲཧΛ୲ ౰͢Δ w *OUFSGBDFͱͦͷ࣮૷Λ༻ҙ͢Δ w ςετ͕༰қʹ w 3FQPTJUPSZΛఏڙ͢Δ%BHHFSͷ.PEVMFΛ
ಉ͡ύοέʔδ಺ʹ࣋ͭ

3FQPTJUPSZ QBDLBHFߏ੒ w CPPLNBSLEPNBJO w &OUSZ w &OUSZKBWB .PEFM
w &OUSZ3FQPTJUPSZKBWB *OUFSGBDF w &OUSZ3FQPTJUPSZ*NQMKBWB w &OUSZ.PEVMFKBWB

3FQPTJUPSZ *OUFSGBDF public interface EntryRepository {  Single<List<Entry>> getGalleryEntries(Category category);  }

3FQPTJUPSZ *NQM public class EntryRepositoryImpl implements EntryRepository {  BookmarkAPI mBookmarkAPI; 
@Inject  public EntryRepositoryImpl(BookmarkAPI bookmarkAPI) {  mBookmarkAPI = bookmarkAPI;  } @Override  public Single<List<Entry>> getGalleryEntries(Category category) {  return mBookmarkAPI  .getEntryListGallery(category.getId())  .map(entries -> Lists.transform(entries, e -> new Entry(e, true)));  }  }

3FQPTJUPSZ .PEVMF @Module  public abstract class EntryModule {  @Singleton  @Binds 
public abstract EntryRepository provideEntryRepository(EntryRepositoryImpl impl);  }

*OUFSBDUPS

*OUFSBDUPS w ಺෦ʹ3FQPTJUPSZΛ࣋ͭ w ඞͣ3YͰฦ͢ w มߋՄೳͳঢ়ଶΛ࣋ͨͳ͍ w εϨουΛܾఆ͢Δ w
࠷ޙʹ͸ඞͣϝΠϯεϨουʹ໭͢ w *OUFSBDUPSΛ૊Έ߹Θͤͳ͍લఏͷઃܭ

*OUFSBDUPS QBDLBHFߏ੒ w CPPLNBSLJOUFSBDUPS w TDIFEVMFS w 4DIFEVMFS4XJUDIKBWB w 4DIFEVMFS4XJUDI5SBOTGPSNFSKBWB
w (FU6TFS1BHFKBWB w (FU&OUSZKBWB w ʜ

*OUFSBDUPS   public class GetUserPage {  private final UserRepository mUserRepository; 
private final SchedulerSwitch mSchedulerSwitch;    @Inject  public GetUserPage(UserRepository repository, SchedulerSwitch schedulerSwitch) {  mUserRepository = repository;  mSchedulerSwitch = schedulerSwitch;  }    public Single<UserPage> execute(HatenaId hatenaId, int limit) {  return mUserRepository  .getUserPage(hatenaId, limit)  .compose(mSchedulerSwitch.fromIOtoUI());  }  }

*OUFSBDUPS 4DIFEVMFS4XJUDI w *05ISFBE.BJO5ISFBE public class SchedulerSwitch {  private final
Scheduler mIOScheduler;  private final Scheduler mUIScheduler;    @Inject  public SchedulerSwitch(@IOScheduler Scheduler ioScheduler, @UIScheduler Scheduler uiScheduler) {  mIOScheduler = ioScheduler;  mUIScheduler = uiScheduler;  }    public <T> SchedulerSwitchTransformer<T> fromIOtoUI() {  return new SchedulerSwitchTransformer<>(mIOScheduler, mUIScheduler);  }  }

*OUFSBDUPS 4DIFEVMFS4XJUDI5SBOTGPSNFS public class SchedulerSwitchTransformer<T> implements  ObservableTransformer<T, T>,  FlowableTransformer<T, T>, 
SingleTransformer<T, T>,  MaybeTransformer<T, T>,  CompletableTransformer  { …  public SchedulerSwitchTransformer(Scheduler from, Scheduler to) {  mFromScheduler = from;  mToScheduler = to;  }    @Override  public ObservableSource<T> apply(Observable<T> upstream) {  return upstream.subscribeOn(mFromScheduler).observeOn(mToScheduler);  } …

7JFX.PEFM

7JFX.PEFM w ಺෦ʹ*OUFSBDUPSΛ࣋ͭ w 7JFX͸7JFX.PEFMͷ͜ͱΛ஌ͬͯΔ w 7JFX.PEFMͷϝιουΛୟ͍ͯྑ͍ w 7JFX.PEFM͸7JFXΛ஌Βͳ͍ w
"DUJWJUZ'SBHNFOU΋7JFXͱΈͳ͢

7JFX.PEFM w ಺෦ʹ௨஌༻0CTFSWBCMFΛ࣋ͭ w ঢ়ଶ͕มΘΔͱ௨஌ w %BUB#JOEJOHͰࣗ਎͕-BZPVUʹηοτ͞ΕΔ ͜ͱ΋૝ఆ w ʢ͋Δఔ౓͸ʣ࢖͍·Θ͞ΕΔલఏ

7JFX.PEFM w $PNNFOUT'SBHNFOU$PNNFOUT7JFX.PEFM

7JFX.PEFM QBDLBHFߏ੒ w CPPLNBSLQSFTFOUBUJPO w WJFXNPEFM w $PNNFOUT7JFX.PEFMKBWB w ʜ

$PNNFOUT7JFX.PEFM public class CommentsViewModel { … private final BehaviorSubject<Page<BookmarkCommentViewModel>> mPages
= BehaviorSubject.create();  public final Observable<Page<BookmarkCommentViewModel>> pages = mPages.hide();    private final PublishSubject<Throwable> mErrors = PublishSubject.create();  public final Observable<Throwable> errors = mErrors.hide();   @Inject  public CommentsViewModel(Observable<FragmentEvent> lifecycle,  GetEntryCommentList getEntryCommentList,  AddStar addStar,  Target target) {  mLifecycle = lifecycle;  mGetEntryCommentList = getEntryCommentList;  mAddStar = addStar; …

$PNNFOUT7JFX.PEFM public void getNextPage() {  mPager  .next()  .subscribe(  mPages::onNext,  mErrors::onNext 
);  } w 'SBHNFOU͔ΒϝιουΛݺͿ

7JFX.PEFMͷ֊૚ w 7JFX.PEFM͸֊૚Λ࣋ͭʢ͜ͱ΋͋Δʣɻ w $PNNFOUT7JFX.PEFM w $PNNFOU7JFX.PEFM w $PNNFOU7JFX.PEFM w
$PNNFOU7JFX.PEFM

$PNNFOU7JFX.PEFM public final class CommentViewModel {  public final String profileImageUrl; 
public final String username;  public final String comment;  public final List<String> tags;  public final String timestamp;   public ObservableList<HatenaStar> stars;  private final AddStar mAddStar;    private final PublishSubject<Throwable> mErrors;    public CommentViewModel(  String entryId,  BookmarkComment bookmarkComment,  AddStar addStar,  PublishSubject<Throwable> errorsSubject)  {  …  }

$PNNFOU7JFX.PEFM   public void addStar() {  // ελʔ௥Ճதͷදࣔɻ  HatenaStar requesting
= new HatenaStar(HatenaStar.Color.REQUESTING, null, null, true);  stars.add(requesting);    mAddStar.execute(mEntryStarInfo)  .subscribe(  () -> {  stars.set(stars.size() - 1, new HatenaStar(HatenaStar.Color.YELLOW, null, null, true));  },  e -> {  mErrors.onNext(new AddStarFailed());  stars.remove(requesting);  }  );  }

$PNNFOU-BZPVU … <FrameLayout  android:id=“@+id/add_star_button” …  android:onClick="@{() -> viewModel.addStar()}">  </FrameLayout> <com.hatena.android.view.star.HatenaStarsView 
android:id=“@+id/star_view" …  app:hatenaStars=“@{viewModel.stars}"/> …

7JFX.PEFM /BWJHBUPS

7JFX.PEFM /BWJHBUPS w ભҠΛද͢Ϋϥε w 7JFX.PEFMͷதͰ࡞Βͣɺ֎෦͔Β౉͞ΕΔ w PO$MJDL࣌౳ͷભҠͰ࢖ΘΕΔ

7JFX.PEFM /BWJHBUPS QBDLBHFߏ੒ w CPPLNBSLQSFTFOUBUJPO w OBWJHBUPS w -PHJO/BWJHBUPSKBWB

7JFX.PEFM /BWJHBUPS public interface LoginNavigator {  void openLogin();  }

7JFX.PEFM /BWJHBUPS public interface LoginNavigator {  void openLogin();    @dagger.Module 
class Module {  private final LoginNavigator mNavigator;    public Module(LoginNavigator navigator) {  mNavigator = navigator;  }    @Provides  public LoginNavigator provideNavigator() {  return mNavigator;  }  }  }

7JFX.PEFM /BWJHBUPS public class TopicFragment extends BaseFragment { private final
LoginNavigator mNavigator = () -> startActivity( new Intent(getActivity(), LoginActivity.class) ); …

7JFX.PEFM /BWJHBUPS @Nullable  @Override  public View onCreateView(...) {  ((App) getActivity().getApplication())
…  .topicFragmentComponent()  .loginNavigatorModule( new LoginNavigator.Module(mNavigator) )  .build()  .inject(this);

7JFX.PEFM /BWJHBUPS public class TopicViewModel { …  private final LoginNavigator
mNavigator;  public final ObservableField<View.OnClickListener> onClickListener = new ObservableField<>(  new View.OnClickListener(){  @Override  public void onClick(View view) {  mNavigator.openLogin();  }  });

7JFX.PEFM /BWJHBUPS <TextView  android:id="@+id/login"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:onClick="@{viewModel.onClickListener}"  android:text="ϩάΠϯը໘΁"/>

ઃܭͷ υΩϡϝϯτԽ

ઃܭͷυΩϡϝϯτԽ w ࡞Δલʹߏ੒ΛυΩϡϝϯτԽ͢Δ w ਓͷೖΕସΘΓʹඋ͑Δ w ઃܭΛϒϨͤ͞ͳ͍

ઃܭͷυΩϡϝϯτԽ w ͜ͷઃܭʹͳͬͨཧ༝΋ॻ͘ w ೲಘͯ͠΋Β͏ͨΊ

ઃܭͷυΩϡϝϯτԽ w 7JFX.PEFM w ֓ཁ w 7JFX.PEFM͸දࣔʹඞཁͳσʔλΛอ࣋͠ɺ0CTFSWBCMFͰ ͦΕͧΕͷ7JFXʹ఻͑·͢ɻͦΕ͸5FYU7JFX͔΋͠Ε·ͤ Μ͠ɺ3FDZDMFS7JFXͰද͍ࣔͯ͠Δ*UFNୡɺ͸ͨ·ͨ 'SBHNFOU͔΋͠Ε·ͤΜɻ
w 7JFX.PEFM͸ɺܾͯ͠7JFXʹ͍ͭͯ஌ͬͯ͸ͳΓ·ͤΜɻ ྫ͑͹ɺҎԼͷྫΛݟ͍ͯͩ͘͞ʜ

ઃܭͷυΩϡϝϯτԽ w ن໿ w 7JFX.PEFM͸7JFXʹ͍ͭͯ஌ͬͯ͸ͳΒͳ͍ɻ͜ Ε͸5FYU7JFX΍%JBMPHɺ5PBTUɺ3FDZDMFS7JFXͱ ͦͷ"EBQUFSͳͲΛࢦ͢ɻ w 7JFX.PEFM͸"DUJWJUZ΍'SBHNFOU΋7JFXͱݟ ͳ͢ɻ

ઃܭͷυΩϡϝϯτԽ w 7JFX.PEFM͸ը໘ભҠͷॲཧΛߦ͏͕ɺ௚઀*OUFOU Λ࡞ͬͨΓɺ'SBHNFOU.BOBHFSΛૢ࡞ͨ͠Γ͸ͤͣɺ ͦΕΒͷૢ࡞͕࣮૷͞Εͨ/BWJHBUPSJOUFSGBDFͰߦ ͏ɻ/BWJHBUPS͸"DUJWJUZ΍'SBHNFOUͰ࣮૷͞ Εɺ7JFX.PEFMʹ*OKFDU͞ΕΔɻ

ணख

ணख w ਐΊํ w ը໘ຖʹλεΫΛ੾Δํ๏

ணख w ઢ͕ଟ͍ͱ͜Ζ͸བྷΈ͕ଟͦ͏େม

ணख w ઢ͕গͳ͍ͱ͜Ζ͸ָͦ͏

ը໘ຖʹਐΊΔํ๏ w Ұͭ׬੒͢Δͷʹ͕͔͔࣌ؒΔ w ݟੵ΋Γʹ͍͘ɺ෼୲͠ʹ͍͘

ϨΠϠʔຖʹਐΊΔํ๏ w 3FQPTJUPSZ*OUFSBDUPS7JFX.PEFMͱਐ Ί͍ͯ͘ w มߋͨ͠ͱ͖ͷӨڹΛ࠷খݶʹͰ͖Δ w ൺֱతݟੵ΋Γ͠΍͍͢

ஔ͖׵͑ํ w ͍͖ͳΓશ෦มߋ͠ͳ͍ʢഁ໓͠·͢ʣ w 3Y+BWBԽ͸ޙճ͠ʢ؆୯ͳΒ΍Δʣ w Ҡߦ༻ύοέʔδʹҰ࣌తͳΫϥεΛ࡞ΔʢҠ ߦޙʹফ͢ʣ w $PNQPOFOU΋গͣͭ͠Ҡಈ͍ͯ͘͠

ݟੵ΋Γ

ϦϦʔε

ϦϦʔε w ̍ʙ̎िؒ͝ͱʹϦϦʔε༷ͯ͠ࢠݟΔ

·ͱΊ

·ͱΊ w ணखલʹ w υϝΠϯ஌ࣝΛಘΔ w খ͞ͳΞϓϦΛ࡞ͬͯࢼ͢ w υΩϡϝϯτԽ͢Δ w
४උ͕ॏཁ

·ͱΊ w ணखޙʹ w ϨΠϠʔຖʹ෼͚ͯԼ͔Β΍͍ͬͯ͘ w ඞͣݟੵ΋Δ w ௕ͯ͘΋िؒ͝ͱʹϦϦʔε

·ͱΊ w ઃܭ͸ϓϩμΫτʹΑͬͯઍࠩສผ w ྑ͍ઃܭΛ෦෼తʹऔΓೖΕΔ w ׬ᘳʹಉ͡ʹ͢Δͷ͸ࠔ೉

͋Γ͕ͱ͏͍͟͝·ͨ͠

droidkaigi-2017-renovation

droidkaigi-2017-renovation

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