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droidkaigi2016
funnelbit
February 18, 2016
Technology
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droidkaigi2016
funnelbit
February 18, 2016
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Transcript
%BHHFSͱ3FBMNΛ ར༻ͨ͠Ϟμϯͳ։ൃ ଜɹྋ
ࣗݾհ w ଜɹྋ w ͯͳJEGVOOFMCJU w 5XJUUFSJEFYQFSPQFSP
None
ͯͳϒοΫϚʔΫ
ژ
ࠓ͢͜ͱ w ϑϨʔϜϫʔΫ͔ΒϩδοΫΛΓ͢ w ӬଓԽ w αʔόαΠυͱฒߦͨ͠։ൃ w ϓϩμΫτνΣοΫ
ϑϨʔϜϫʔΫ͔Βϩ δοΫΛΓ͢
ϑϨʔϜϫʔΫ w "OESPJE4%,͕ఏڙ͢ΔɺΞϓϦը໘ͷϥΠ ϑαΠΫϧͱڧ݁͘ͼ͍ͭͨΫϥε
ϩδοΫΛͲ͜ʹॻ͔͘ w º"DUJWJUZ 'SBHNFOUʹॻ͘ w ංେԽɺςετෆՄೳ w ˛$VTUPN7JFXʹॻ͘ w 7JFXͷϩδοΫ͜͜ʹॻ͚ྑ͍
w ͦΕҎ֎ͷॴ
ͦΕҎ֎ͷॴʁ w ϩδοΫΛநԽͯ͠Γग़͢ w d$POUSPMMFS d.BOBHFSͳͲɺϩδοΫ୲ ΫϥεΛ࡞Δ
ϩδοΫͷநͷ*OTUBODFΛ Ͳ͜Ͱ࡞Δ͔ʁ w ˛ར༻͢Δ"DUJWJUZʹॻ͘ w ݁ͼ͖͕ͭڧ͘ͳΔ w ςετͷ࣌ʹڍಈΛม͍͑ͨͱ͖ʁ w ˓ར༻͢Δͷ֎෦Ͱੜɾཧ
w ґଘͤ͞ͳ͍ w ςετ࣌ʹΓସ͑Δɺͱ͍ͬͨ͜ͱ͕༰қ w %*
ૉͳ%* public EntryManager(APIClient apiClient) { this.mAPIClient = apiClient; ... }
ૉͳ%*͑ͳ͍ w "DUJWJUZͱ'SBHNFOUʹରͯ͠ແྗ w ίϯετϥΫλͰΠϯελϯεͤͳ͍ w 1BSDFMBCMFʹͯ͠ؤுΕͰ͖ͳ͍͜ͱͳ͍͕ ؤுΓͨ͘ͳ͍ w ͜ͷ%*ίϯςφ͕͋Εղܾ͢Δ
%*ίϯςφ w ґଘೖΛߦ͏ϑϨʔϜϫʔΫ w खಈͰΈΛ༻ҙ͠ͳͯ͘ྑ͍ w Πϯελϯεཧߦͳ͑Δ
Ͳͷ%*ίϯςφΛ͏͖ ͔ʁ w 3PCP(VJDF w %BHHFS w %BHHFS
%BHHFS
%BHHFS w IUUQTHJUIVCDPNHPPHMFEBHHFS w %*ίϯςφ w 4RVBSF͕։ൃͯͨ͠%BHHFSͷHPPHMFGPSL
%BHHFSͷར w ίϯύΠϧ࣌ʹίʔυੜ͠ґଘղܾ w ࣮ߦதͷύϑΥʔϚϯεʹӨڹ͠ͳ͍ w σόοάͰίʔυΛ͍͍͢
%*ͷߏ w .PEVMF w *OTUBODFͷੜํ๏Λهड़ w $PNQPOFOU w .PEVMFͷ*OTUBODFΛͲ͜ʹJOKFDU͢Δ͔ه ड़
w ֊ߏΛׂͨͤͯΛ୲͠໌֬Խ
.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()); } }
$PNQPOFOUͷ͚ํ w "DUJWJUZ'SBHNFOUຖʹ͚Δʁ w ͕υϯυϯ૿͍͑ͯ͘ w ׂ͝ͱʹ͚Δ w ֊ߏΛ࡞ͬͯࡉԽ
4VC$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
ӬଓԽ͢Δత w 8FC"1*͔ΒͷϨεϙϯεΛӬଓԽ w ΦϑϥΠϯ༻ͷΩϟογϡσʔλͷͨΊ w "DUJWJUZ'SBHNFOUͷ࠶ੜ࣌ʹ෮ؼ͢ΔͨΊ w ෳͷը໘Ͱಉ͡σʔλΛදࣔ͢Δͱ͖ͷҰ؏ ੑΛอͪ͘͢͢ΔͨΊ
ӬଓԽ͢Δखஈ w º4IBSFE1SFGFSFODFTʹೖΕΔ w ˛'JMFʹॻ͖ͩ͢ w ˓42-JUFʹೖΕΔ w ˓3FBMNΛ͏
42-JUF w "OESPJEඪ४ͳͷͰ҆৺ײ͕͋Δ w ࣗྗͰॻ͘ͷগʑ໘͍͘͞ w 03.͏ʁ w ͍͢͞ɺૣ͞ɺ҆ఆɺকདྷੑʜ
3FBMN w ։ൃ͕׆ൃ w 42-JUFͷΑ͏ͳ໘ͳ͜ͱΛ͠ͳͯ͘ྑ͍ w ˛όʔδϣϯະຬ
3FBMNΛ͏ w J04ΞϓϦͱ ՄೳͳݶΓ ڞ௨ͷϞσϧΛ࣋ͪͨ ͍ͨΊ w ։ൃ׆ൃ͔ͩΒԿ͔͋ͬͯରॲ͞ΕΔͰ͋Ζ ͏
3FBMN
3FBMN w 42-JUFΛஔ͖͑͏Δ.PCJMFEBUBCBTF w 03.ͷػೳ࣋ͭ w ߴ w J04Ͱར༻Մೳ
3FBMNΛ͏ new RealmConfiguration.Builder(context) .name("realm") .schemaVersion(1L) .build();
3FBMNΛ͏ RealmResults<Entry> followingEntries = mRealm.where(Entry.class) .equalTo("isFollowing",true) .findAllSortedAsync( "createdAt", Sort.DESCENDING);
"DUJWJUZੜ࣌ʹҾ͘ public class MainActivity extends AppCompatActivity { … public void
onCreate(Bundle savedInstanceState) { mRealmResults = mRealm.where().findAllAsync() … } w ͙͢͞·3FBMN3FTVMUTΛಘΔ w ਖ਼͘͠෮ݩ͢ΔͨΊʹ͏
"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); } …
"DUJWJUZؒͷσʔλड͚͠ Intent intent = new Intent(context, EpisodeActivity.class); intent.putExtra(EXTRA_ID, Id); w
3FBMNͷ*%Λ͢͜ͱʹͯ͠͠·͏ w ࠶ੜʹඋ͑ΕΔ͜ͱʹͳΔ
3FBMN Λ %BHHFS Ͱ εϨου͝ͱʹ*OKFDU
εϨου·ͨ͛ͳ͍ w 3FBMN*OTUBODF͕࡞͞ΕͨεϨου͔Βଞͷ εϨουͰ͑ͳ͍ w ͔͠͠*OKFDUPO$SFBUF Ͱߦ͍͍ͨ w ʮผεϨου͕ཉ͍࣌͠ʹ*OKFDU͢ΔΈʯ͕ ඞཁ
%BHHFSͷ1SPWJEFSΛ͏ … @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*͕ඞͣ͠ઌߦ͢ΔͱݶΒͳ͍ w μϛʔσʔλΛΞϓϦ෦ʹ͔࣋ͭʁ w "1*ʹมߋ͕͋ͬͨ࣌ʹ໘ w J04ଆಉ࣌ʹมߋ͢Δඞཁ͕ग़ͯ͘Δ
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> ^
ςετͰ4UVC4FSWFSΛ ͏ w ˛μϛʔͷ+40/Λ෦ʹ࣋ͬͯςετʹར༻ w "1*มΘΔͨͼʹมߋͤͶͳΒͳ͍ w "1*ͷมߋʹςετ͕ؾ͚ͳ͍ w ̋"1*ͷαʔόΛୟ͘
w μϛʔσʔλෆཁ w มߋʹςετ͕ؾ͕ͭ͘
ϓϩμΫτνΣοΫ
ϓϩμΫτνΣοΫ w ژɾ౦ژʹΦϑΟε͕͋Δ w ౦ژʹσβΠφʔ͕͍Δ w ख৮Γ৮Εͳ͍ͱΘ͔Βͳ͍
#FUB#Z$SBTIMZUJDT KFOLJOT GBTUMBOF
#FUB w #FUB#Z$SBTIMZUJDTΛͬͯ#FUB৴ w ৴ͷλΠϛϯάKFOLJOTʹͤΔ
KFOLJOT w ϒϥϯνΛݟͯͯɺNBTUFSʹϚʔδ͞ΕͨΒ #FUBΛඈ͢ w εΫϦʔϯγϣοτΛࡱͬͯ؆қతͳσβΠϯ֬ ೝ w "1*ຖͷࠩҟΛ֬ೝ 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 NFTTBHFSPDLFUϏϧυ͕ྃ͠·ͨ͠SPDLFU DIBOOFMBQQ TVDDFTTUSVF
QBZMPBE\ #VJME%BUF5JNFOFXUP@T ^ EFGBVMU@QBZMPBET<HJU@CSBODI HJU@BVUIPS>
ςετ࣮ߦ EFTD3VOTBMMUIFUFTUT MBOFUFTUEP HSBEMF UBTLD$ FOE
·ͱΊ w ϑϨʔϜϫʔΫ͔ΒϩδοΫΛΓ͢ w ϩδοΫͷநԽɺ%BHHFSͰ*OKFDU w ӬଓԽ w 3FBMNΛར༻ w
αʔόαΠυͱฒߦͨ͠։ൃ w 4UVC4FSWFSΛར༻ w ϓϩμΫτνΣοΫ w #FUB#Z$SBTIMZUJDT KFOLJOT GBTUMBOF
͋Γ͕ͱ͏͍͟͝·ͨ͠