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%BHHFSͱ3FBMNΛ ར༻ͨ͠Ϟμϯͳ։ൃ ๺ଜɹྋ

ࣗݾ঺հ w ๺ଜɹྋ w ͸ͯͳJEGVOOFMCJU w 5XJUUFSJEFYQFSPQFSP

͸ͯͳϒοΫϚʔΫ

ࠓ೔࿩͢͜ͱ w ϑϨʔϜϫʔΫ͔ΒϩδοΫΛ੾Γ཭͢ w ӬଓԽ w αʔόαΠυͱฒߦͨ͠։ൃ w ϓϩμΫτνΣοΫ

ϑϨʔϜϫʔΫ͔Βϩ δοΫΛ੾Γ཭͢

ϑϨʔϜϫʔΫ w "OESPJE4%,͕ఏڙ͢ΔɺΞϓϦ΍ը໘ͷϥΠ ϑαΠΫϧͱڧ݁͘ͼ͍ͭͨΫϥε

ϩδοΫΛͲ͜ʹॻ͔͘ w º"DUJWJUZ 'SBHNFOUʹ௚઀ॻ͘ w ංେԽɺςετෆՄೳ w ˛$VTUPN7JFXʹ௚઀ॻ͘ w 7JFXͷϩδοΫ͸͜͜ʹॻ͚͹ྑ͍
w ͦΕҎ֎ͷ৔ॴ

ͦΕҎ֎ͷ৔ॴʁ w ϩδοΫΛந৅Խͯ͠੾Γग़͢ w d$POUSPMMFS d.BOBHFSͳͲɺϩδοΫ୲౰ ΫϥεΛ࡞Δ

ϩδοΫͷந৅ͷ*OTUBODFΛ Ͳ͜Ͱ࡞Δ͔ʁ w ˛ར༻͢Δ"DUJWJUZʹ௚઀ॻ͘ w ݁ͼ͖͕ͭڧ͘ͳΔ w ςετͷ࣌ʹڍಈΛม͍͑ͨͱ͖͸ʁ w ˓ར༻͢Δͷ֎෦Ͱੜ੒ɾ؅ཧ
w ґଘͤ͞ͳ͍ w ςετ࣌ʹ͸੾Γସ͑Δɺͱ͍ͬͨ͜ͱ͕༰қ w %*

ૉ๿ͳ%* public EntryManager(APIClient apiClient) { this.mAPIClient = apiClient;  ... }

ૉ๿ͳ%*࢖͑ͳ͍໰୊ w "DUJWJUZͱ'SBHNFOUʹରͯ͠͸ແྗ w ίϯετϥΫλͰΠϯελϯε౉ͤͳ͍ w 1BSDFMBCMFʹͯ͠ؤுΕ͹Ͱ͖ͳ͍͜ͱ͸ͳ͍͕ ؤுΓͨ͘ͳ͍ w ͜ͷ໰୊͸%*ίϯςφ͕͋Ε͹ղܾ͢Δ

%*ίϯςφ w ґଘ஫ೖΛߦ͏ϑϨʔϜϫʔΫ w खಈͰ࢓૊ΈΛ༻ҙ͠ͳͯ͘ྑ͍ w Πϯελϯε؅ཧ΋ߦͳ͑Δ

Ͳͷ%*ίϯςφΛ࢖͏΂͖ ͔ʁ w 3PCP(VJDF w %BHHFS w %BHHFS

%BHHFS

%BHHFS w IUUQTHJUIVCDPNHPPHMFEBHHFS w %*ίϯςφ w 4RVBSF͕։ൃͯͨ͠%BHHFSͷHPPHMFGPSL

%BHHFSͷར఺ w ίϯύΠϧ࣌ʹίʔυੜ੒͠ґଘղܾ w ࣮ߦதͷύϑΥʔϚϯεʹӨڹ͠ͳ͍ w σόοάͰίʔυΛ௥͍΍͍͢

%*ͷߏ੒ w .PEVMF w *OTUBODFͷੜ੒ํ๏Λهड़ w $PNQPOFOU w .PEVMF಺ͷ*OTUBODFΛͲ͜ʹJOKFDU͢Δ͔ه ड़
w ֊૚ߏ଄Λ΋ͨͤͯ໾ׂΛ෼୲͠໌֬Խ

.PEVMF @Module   public class MainModule { ... @Provides  EntryManager
provideEntryManager() { return new EntryManager(mService); } ...

$PNQPOFOU @Component(modules = MainModule.class) public interface MainComponent { void inject(MainActivity
mainActivity) …

*OKFDU public class MainActivity extends AppCompatActivity { @Inject EntryManager mEntryManager;
@Override   protected void onCreate(Bundle b) { ... ((App) getApplication()) .component() .inject(this); ...

5FTU༻.PEVMF @Module   public class MainTestModule { ... @Provides  EntryManager
provideEntryManager() { return new EntryManager(mStubService); } ...

ςετ༻$PNQPOFOU @Component(modules = MainTestModule.class) public interface MainTestComponent { void inject(EntryManagerTestCase
testCase) …

*OKFDU ςετ public class EntryManagerTestCase extends InstrumentationTestCase {  …  @Inject 
EntryManager mEntryManager;  … public testGetEntries() { assertEquals( "ΤϯτϦऔಘͰ͖͍ͯΔ", false, mEntryManager.getEntries().isEmpty()); }  }

$PNQPOFOUͷ෼͚ํ w "DUJWJUZ΍'SBHNFOUຖʹ෼͚Δʁ w ਺͕υϯυϯ૿͍͑ͯ͘ w ໾ׂ͝ͱʹ෼͚Δ w ֊૚ߏ଄Λ࡞ͬͯࡉ෼Խ

4VC$PNQPOFOU @Component(modules = MainModule.class)  public interface MainComponent {  void inject(App
app);    // Activities  void inject(RootActivity rootActivity);    // Fragments  void inject(MainSettingsFragment mainSettingsFragment);    // Subcomponents  UserComponent userComponent(UserModule userModule); }

4VC$PNQPOFOU @Subcomponent(modules = UserModule.class)  public interface UserComponent {    //
Fragments  void inject(MyFragment myFragment);    UserController userController();  }

$PNQPOFOUΛऔಘ public class MyFragment extends Fragment { MainComponent mainComponent =
App.get(getActivity())  .getMainComponent();   UserComponent userComponent = mainComponent.userComponent( new UserModule( mainComponent.getRealm(), args.getString(ARGS_USER_ID)));  userComponent.inject(this); }

ӬଓԽ

ӬଓԽ͢Δ໨త w 8FC"1*͔ΒͷϨεϙϯεΛӬଓԽ w ΦϑϥΠϯ༻ͷΩϟογϡσʔλͷͨΊ w "DUJWJUZ΍'SBHNFOUͷ࠶ੜ੒࣌ʹ෮ؼ͢ΔͨΊ w ෳ਺ͷը໘Ͱಉ͡σʔλΛදࣔ͢Δͱ͖ͷҰ؏ ੑΛอͪ΍͘͢͢ΔͨΊ

ӬଓԽ͢Δखஈ w º4IBSFE1SFGFSFODFTʹೖΕΔ w ˛'JMFʹॻ͖ͩ͢ w ˓42-JUFʹೖΕΔ w ˓3FBMNΛ࢖͏

42-JUF w "OESPJEඪ४ͳͷͰ҆৺ײ͕͋Δ w ࣗྗͰॻ͘ͷ͸গʑ໘౗͍͘͞ w 03.࢖͏ʁ w ࢖͍΍͢͞ɺૣ͞ɺ҆ఆɺকདྷੑʜ

3FBMN w ։ൃ͕׆ൃ w 42-JUFͷΑ͏ͳ໘౗ͳ͜ͱΛ͠ͳͯ͘ྑ͍ w ˛όʔδϣϯະຬ

3FBMNΛ࢖͏ w J04ΞϓϦͱ ՄೳͳݶΓ ڞ௨ͷϞσϧΛ࣋ͪͨ ͍ͨΊ w ։ൃ׆ൃ͔ͩΒԿ͔͋ͬͯ΋ରॲ͞ΕΔͰ͋Ζ ͏

3FBMN w 42-JUFΛஔ͖׵͑͏Δ.PCJMFEBUBCBTF w 03.ͷػೳ΋࣋ͭ w ߴ଎ w J04Ͱ΋ར༻Մೳ

3FBMNΛ࢖͏ new RealmConfiguration.Builder(context)  .name("realm")  .schemaVersion(1L)  .build();

3FBMNΛ࢖͏ RealmResults<Entry> followingEntries = mRealm.where(Entry.class) .equalTo("isFollowing",true) .findAllSortedAsync( "createdAt", Sort.DESCENDING);

"DUJWJUZੜ੒࣌ʹҾ͘ public class MainActivity extends AppCompatActivity { … public void
onCreate(Bundle savedInstanceState) { mRealmResults = mRealm.where().findAllAsync() … } w ͙͢͞·3FBMN3FTVMUTΛಘΔ w ਖ਼͘͠෮ݩ͢ΔͨΊʹ΋࢖͏

"EBQUFSʹ3FBMN3FTVMU public class EntriesAdapter { public EntriesAdapter(RealmResults<Entry> entries) {  mEntries
= entries;  mRealmChangeListener = new RealmChangeListener() {  @Override  public void onChange() {  mListItems = getItems();  EpisodesAdapter.this.notifyDataSetChanged();  }  }; …  } …

"EBQUFSʹ3FBMN3FTVMU public class EntriesAdapter { … @Override  public void onAttachedToRecyclerView(RecyclerView
recyclerView) {  super.onAttachedToRecyclerView(recyclerView);  mResults.addChangeListener(mRealmChangeListener);  }    @Override  public void onDetachedFromRecyclerView(RecyclerView recyclerView) {  mResults.removeChangeListener(mRealmChangeListener);  super.onDetachedFromRecyclerView(recyclerView);  } …

"DUJWJUZؒͷσʔλड͚౉͠ Intent intent = new Intent(context, EpisodeActivity.class); intent.putExtra(EXTRA_ID, Id); w
3FBMNͷ*%Λ౉͢͜ͱʹͯ͠͠·͏ w ࠶ੜ੒ʹ΋උ͑ΕΔ͜ͱʹͳΔ

3FBMN Λ %BHHFS Ͱ εϨου͝ͱʹ*OKFDU

εϨου·ͨ͛ͳ͍໰୊ w 3FBMN*OTUBODF͕࡞੒͞ΕͨεϨου͔Βଞͷ εϨουͰ࢖͑ͳ͍ w ͔͠͠*OKFDU͸PO$SFBUF Ͱߦ͍͍ͨ w ʮผεϨου͕ཉ͍࣌͠ʹ*OKFDU͢Δ࢓૊Έʯ͕ ඞཁ

%BHHFSͷ1SPWJEFSΛ࢖͏ … @Inject public EntryPrefetcher(Provider<Realm> realmProvider) extends ThreadPoolExecutor { mRealmProvider
= realmProvider; … private static class Task implements Callable<String> { @Override  public String call() throws Exception { Realm realm = mRealmProvider.get(); … } …

αʔόαΠυ ͱ ฒߦͨ͠։ൃ

αʔόαΠυͱฒߦͨ͠։ൃ w "1*͕ඞͣ͠΋ઌߦ͢Δͱ͸ݶΒͳ͍ w μϛʔσʔλΛΞϓϦ಺෦ʹ͔࣋ͭʁ w "1*ʹมߋ͕͋ͬͨ࣌ʹ໘౗ w J04ଆ΋ಉ࣌ʹมߋ͢Δඞཁ͕ग़ͯ͘Δ

4UVC4FSWFS

4UVC4FSWFS w μϛʔͷϨεϙϯεΛฦ͢αʔόΛ࡞Δ w "1*4DIFNB όϦσʔλͱͯ͠ར༻ w IUUQTHJUIVCDPNIJUPEF"1*4DIFNB

4UVC4FSWFS SFTPVSDFMPHJO@SFRVFTU\ UZQFPCKFDU EFTDSJQUJPOϩάΠϯϦΫΤετ QSPQFSUJFT\ FNBJM@BEESFTT\ UZQFTUSJOH
EFTDSJQUJPOϝʔϧΞυϨε FYBNQMFBCD!FYBNQMFDPN ^ QBTTXPSE\ UZQFTUSJOH EFTDSJQUJPObύεϫʔυ FYBNQMF1BTTXSE ^ ^ SFRVJSFE<FNBJM@BEESFTT QBTTXPSE> ^

ςετͰ΋4UVC4FSWFSΛ ࢖͏ w ˛μϛʔͷ+40/Λ಺෦ʹ࣋ͬͯςετʹར༻ w "1*มΘΔͨͼʹมߋͤͶ͹ͳΒͳ͍ w "1*ͷมߋʹςετ͕ؾ෇͚ͳ͍ w ̋"1*ͷαʔόΛ௚઀ୟ͘
w μϛʔσʔλෆཁ w มߋʹςετ͕ؾ͕ͭ͘

ϓϩμΫτνΣοΫ

ϓϩμΫτνΣοΫ w ژ౎ɾ౦ژʹΦϑΟε͕͋Δ w ౦ژʹ΋σβΠφʔ͕͍Δ w ख৮Γ͸௚઀৮Εͳ͍ͱΘ͔Βͳ͍

#FUB#Z$SBTIMZUJDT KFOLJOT GBTUMBOF

#FUB w #FUB#Z$SBTIMZUJDTΛ࢖ͬͯ#FUB഑৴ w ഑৴ͷλΠϛϯά͸KFOLJOTʹ೚ͤΔ

KFOLJOT w ϒϥϯνΛݟͯͯɺNBTUFSʹϚʔδ͞ΕͨΒ #FUBΛඈ͹͢ w εΫϦʔϯγϣοτΛࡱͬͯ؆қతͳσβΠϯ֬ ೝ w "1*ຖͷࠩҟ౳Λ֬ೝ w
4MBDLʹ௨஌

GBTUMBOF (JUIVC࿈ܞ EBUB\TUBUFTUBUF UBSHFU@VSMUBSHFU@VSM DPOUFYUDPOUFYU EFTDSJQUJPO^ IFBEFST\"VUIPSJ[BUJPOUPLFO\UPLFO^^ &YDPOQPTU VSM
IFBEFSTIFBEFST CPEZ EBUBUP@KTPO

GBTUMBOF 4MBDL࿈ܞ TMBDL NFTTBHFSPDLFUϏϧυ͕׬ྃ͠·ͨ͠SPDLFU DIBOOFMBQQ TVDDFTTUSVF
QBZMPBE\ #VJME%BUF5JNFOFXUP@T ^ EFGBVMU@QBZMPBET<HJU@CSBODI HJU@BVUIPS>

ςετ࣮ߦ EFTD3VOTBMMUIFUFTUT MBOFUFTUEP HSBEMF UBTLD$ FOE

·ͱΊ w ϑϨʔϜϫʔΫ͔ΒϩδοΫΛ੾Γ཭͢ w ϩδοΫͷந৅Խɺ%BHHFSͰ*OKFDU w ӬଓԽ w 3FBMNΛར༻ w
αʔόαΠυͱฒߦͨ͠։ൃ w 4UVC4FSWFSΛར༻ w ϓϩμΫτνΣοΫ w #FUB#Z$SBTIMZUJDT KFOLJOT GBTUMBOF

͋Γ͕ͱ͏͍͟͝·ͨ͠

droidkaigi2016

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