RxJava 入門

RxJava ೖ໳ Droid Girls Meetup #6 ࠇ઒ ༸ (@hydrakecat)

3Y+BWBהכ ▸ 3Y 3FBDUJWF&YUFOTJPO ך+BWB㹋鄲 ▸ ➭ח׮$װ+4זוד㹋鄲ָ֮׷ ▸ 嚊䙀װ欽铂ָ♧筰זךד鎉铂ָ㢌׻׏ג׮椚鍑׃ װְׅ

3Y+BWBהכ ▸ ꬊず劍Ⳣ椚׾䪔ֲ׋׭ךٓ؎ـٓٔ ▸ طحزٙ٦ؙ鸐⥋ծ%#㉏ְさ׻ׇ ▸ 6*؎كٝز

3Y+BWB ▸ 3Y+BWBכY禸הY禸ד㣐ֹֻ麩ְתׅ ▸ 欽铂ծⵖꣲծؔلٖ٦ةזו ▸ ➙㔐כ3Y+BWB׾⢪ְתׅ ▸ ָծ׉ֿתד麩ְ׾孡ח׃זֻג㣐♱㣗דׅ

3Yך嚊䙀

؎كٝزח⿾䘔ׅ׷׌ֽ# service.contributors(new NetworkCall.Listener<List<Contributor >>() {  @Override public void success(List<Contributor> data)
{  runOnUiThread(() -> {  if (!isDestroyed()) {  adapter.setContributors(data);  }  });  }    @Override public void failure(Throwable t) {}  }); 3Yך؝خ أٖحس䭷㹀 ٓ؎ؿ؟؎ؙٕثؑحؙ

؎كٝزח⿾䘔ׅ׷׌ֽ# 3Yך؝خ service.contributors()  …  .subscribe(  data -> adapter.setContributors(data),  throwable
-> Log.e(TAG, throwable.getMessage())  ); וֲ⿾䘔ׅ׷ַ׌ֽ剅ֻ

؎كٝزח⿾䘔ׅ׷׌ֽ# 3Yך؝خ service.contributors()  …  .subscribe(  data -> adapter.setContributors(data),  throwable
-> Log.e(TAG, throwable.getMessage())  ); ֿֿחאְגכ䖓鶢

3Yך嚊䙀 { Observable # Observer subscribe emit emit emit Event
subscribeঢ়گΛ؅ཧ͢Δ΋ͷ = Disposable

0CTFSWBCMF ‣ &WFOU׾וֲFNJUׅ׷ַ׾㹀׭׷ ‣ 荈ⴓד⡲׷ֿהכ֮ת׶זְ ‣ طحزٙ٦ؙ鸐⥋̔3FUSPU ‣ 6*؎كٝز̔3Y#JOEJOH //
1ඵ͝ͱʹLongܕͷΠϕϯτ͕emit͞ΕΔʢ1, 2, 3, …ʣ Observable.interval(1, TimeUnit.SECONDS);   // Ϧετͷཁૉ͕1ͭͣͭemit͞ΕΔ Observable.fromIterable(list);

0CTFSWFS ‣ ؎كٝز׾「ֽ《׏גוֲ⿾䘔ׅ׷ַ׾㹀׭׷ ‣ 0CTFSWBCMFTVCTDSJCF ך䒷侧ח♷ִ׷ ‣ ؎كٝز׀הח؝٦ٕغحًؙاحسָㄎל׸׷

0CTFSWFS service.contributors(owner, repository)  .subscribe(new Observer<List<Contributor >>() {  @Override public void
onSubscribe(Disposable d) {  }    @Override public void onNext(List<Contributor> contributors) {  }    @Override public void onError(Throwable e) {  }    @Override public void onComplete() {  }  });  TVCTDSJCFׁ׸׋ FWFOU׾「ֽ《׏׋ ؒٓ٦ָ饯ֹ׋ ֿ׸⟃♳FWFOUָזְ

service.contributors(owner, repository)  .subscribe(new DefaultObserver<List<Contributor >>() {  @Override public void onNext(List<Contributor>
contributors) {  ‌}    @Override public void onError(Throwable e) {  ‌}    @Override public void onComplete() {  ‌}  });  0CTFSWFS

service.contributors(owner, repository)  .subscribe( contributors -> {},  throwable -> {},  ()
-> {} );    0CTFSWFS

圫ղז0CTFSWBCMF ‣ PO/FYU ָ⡦㔐׮ㄎל׸גPO$PNQMFUFE כ宕黅 חㄎל׸זְ ‣ PO/FYU ָ㔐׌ֽㄎל׸ג湫䖓חPO$PNQMFUFE DPNQMFUFE

圫ղז0CTFSWBCMF ‣ PO/FYU ָ㔐׮ㄎל׸׆חPO&SSPS ָㄎל׸׷ FSSPS

%JTQPTBCMF ‣ TVCTDSJCFך朐䡾׾盖椚 ‣ 0CTFSWBCMFTVCTDSJCF ך䨱׶⦼ ‣ %JTQPTBCMFEJTQPTF ׾ㄎעהծ  ׉׸⟃꣬כ0CTFSWFSכ؎كٝز׾「ֽ《׵זְ

%JTQPTBCMF @Override protected void onCreate(Bundle savedInstanceState) {  …  disposable =
service.contributors(owner, repository)  .subscribe(  contributors -> {},  throwable -> {},  () -> {}  ); }    @Override protected void onDestroy() {  super.onDestroy();  if (disposable != null) {  disposable.dispose();  }  } ֿ׸⟃꣬כ؎كٝز׾「ֽ《׵זְ

%JTQPTBCMF ‣ "OESPJEדכTVCTDSJCFהEJTQPTFך㜥䨽ָٓ؎ ؿ؟؎ؙٕ♳ד㼎獥חז׷״ֲחׅ׷ ‣ TVCTDSJCFPO$SFBUF EJTQPTFPO%FTUSPZ ‣ TVCTDSJCFPO4UBSU
EJTQPTFPO4UPQ ‣ TVCTDSJCFPO"UUBDIFE5P8JOEPX   EJTQPTFPO%FUBDIFE'SPN8JOEPX

3Yך؝خ 0CTFSWBCMF׾㢌䳔׃גְֻؔلٖ٦ة׾黝欽ׅ׷ ֿהדծ実׭׷0CTFSWBCMFחׅ׷

تـٕةحف׾嗚⳿׃׋ְ = Operator 0QFSBUPS ྡΓ߹͏Πϕϯτ͕Ұఆ࣌ؒҎ಺  ͩͬͨΒΠϕϯτΛemit͢ΔΑ͏ͳObservable  ʹม׵͢Δ

圫ղז0QFSBUPS ▸ MUFS ▸ 勴⟝ח֮׏׋؎كٝز׌ֽ鸐ׅ

圫ղז0QFSBUPS ▸ UBLF ▸ ؎كٝز׾⯓걧ַ׵䭷㹀ׁ׸׋侧׌ֽ鸐ׅ

圫ղז0QFSBUPS ▸ NBQ ▸ ؎كٝز׾㢌䳔ׅ׷

圫ղז0QFSBUPS ▸ BU.BQ ▸ ؎كٝزאאַ׵倜׋ח0CTFSWBCMF׾⡲ ׶ծ׉ַֿ׵FNJUׁ׸׷؎كٝز׾תה׭׷

NBQהBU.BQך⢪ְⴓֽ ‣ ♧菙涸ח㢌䳔䖓ך؎كٝزָ0CTFSWBCMFחז׷ז ׵BU.BQ׾⢪ֲ ‣ ⢽Ⰵ׸㶨ךطحزٙ٦ؙ鸐⥋ ‣ ⢽ٔأز׾㾜Ꟛׅ׷ service.items()  .flatMap(item
-> service.user(item.getUser())) service.usersList()  .flatMap(users -> Observable.fromIterable(users))

NBQהBU.BQך⢪ְⴓֽ ‣ ׉ֲדזְז׵NBQ׾⢪ֲ ‣ ⢽ٔأزך"EBQUFS欽חؔـآؙؑز׾㢌䳔 service.users()  .map(user -> new Contributor(user.getLogin(),
user.getName()))

圫ղז0QFSBUPS ▸ DPNCJOF-BUFTU ▸ 醱侧ך0CTFSWBCMFךֲ׍ծוַָֿ؎كٝز׾ FNJU׃׋׵ծ➭ך0CTFSWBCMFך剑倜ך؎كٝ زהさ׻ׇ׋؎كٝز׾FNJUׅ׷

圫ղז0QFSBUPS ▸ DPNCJOF-BUFTU

圫ղז0QFSBUPS ▸ TVCTDSJCF0O ▸ ؎كٝز׾FNJUׅ׷הֹךأٖحس׾㢌刿ׅ׷ service.contributors(owner, repository)  .subscribeOn(Schedulers.io())  طحزٙ٦ؙ鸐⥋׾ً؎ٝأٖحسהⴽךأٖحسד遤ֲ

圫ղז0QFSBUPS ▸ TVCTDSJCF0O ▸ ؎كٝز׾FNJUׅ׷הֹךأٖحس׾㢌刿ׅ׷ ▸ 姻然חכ׍׳׏ה麩ְתָׅծה׶ִ֮׆כֿ ְֲֲ椚鍑ד$

圫ղז0QFSBUPS ▸ PCTFSWF0O ▸ ؎كٝز׾「ֽ《׷הֹךأٖحس׾㢌刿ׅ׷ service.contributors(owner, repository)  .subscribeOn(Schedulers.io())  .observeOn(AndroidSchedulers.mainThread()) .subscribe(contributors
-> { … }) TVCTDSJCF ⰻד遤ֲⳢ椚׾ً؎ٝأٖحسד遤ֲ

圫ղז0QFSBUPS ▸ GSPN*UFSBCMF ▸ ٔأز*UFSBCMFַ׵0CTFSWBCMF׾⡲׷ FromIterable

圫ղז0QFSBUPS ▸ UP-JTU ▸ ؎كٝز׾Ⰻ鿇תה׭ג-JTUחׅ׷ toList

3Yך؝خ ▸ ؿؑ٦أחⴓֽג罋ִ׷ ▸ ر٦ةך崧׸׾ת׆㹀纏 ▸ 0CTFSWBCMF׾欽䠐׃׋׶ծPQFSBUPS׾籬ְד וֲ㢌䳔ׅ׷ַ䭷爙ׅ׷ ▸
ر٦ة׾崧ׅ ▸ TVCTDSJCFׅ׷

Pipes by Domiriel CC BY-NC 2.0

״ֻ֮׷⹞麩ְ ‣ 0CTFSWBCMF׾⡲׏׋׵ծּׅחFWFOUָFNJUׁ׸׷ Observable<List<Contributor >> o = service.contributors(); ת׌طحزٙ٦ؙ鸐⥋כ  饯ֹזְ

״ֻ֮׷⹞麩ְ ‣ 0CTFSWBCMF׾⡲׏׋׵ծּׅחFWFOUָFNJUׁ׸׷ Observable<List<Contributor >> o = service.contributors(); o.subscribe(contributors ->
{}, throwable -> {}, () -> {}); طحزٙ٦ؙ鸐⥋ָ饯ֹ׷

״ֻ֮׷⹞麩ְ ‣ 0CTFSWBCMF׾⡲׏׋׵ծּׅחFWFOUָFNJUׁ׸׷ ‣ 0CTFSWBCMFָⰟ剣ׁ׸׷ Observable<List<Contributor >> o = service.contributors();
o.subscribe(contributors -> {}, throwable -> {}, () -> {}); o.subscribe(contributors -> {}, throwable -> {}, () -> {}); طحزٙ٦ؙ鸐⥋ָ饯ֹ׷さ鎘㔐

رغحؚך؝خ ▸ EP0O&BDIؔلٖ٦ة׾ⵃ欽ׅ׷ service.contributors(owner, repository)  .doOnEach(event -> Log.d(TAG, "event: "
+ event))  .flatMap(…) .map(…)  … MainActivity D notification: OnNextNotification[[…]] MainActivity D notification: OnCompleteNotification

➙傈鑧ׁזַ׏׋ֿה ▸ 4JOHMF .BZCF $PNQMFUBCMF ▸ )PU0CTFSWBCMFה$PME0CTFSWBCMF ▸ 4VCKFDU ▸
'MPXBCMFה0CTFSWBCMFך麩ְ ▸ #BDLQSFTTVSFהכ ▸ ذأز

⿫罋俑柃 ‣ IUUQSFBDUJWFYJP ‣ IUUQSYXJLJXJLJEPUDPNTBNQMFT ‣ ˑ3FBDUJWF1SPHSBNNJOHXJUI3Y+BWB$SFBUJOH "TZODISPOPVT &WFOU#BTFE"QQMJDBUJPOT˒
5PNBT[/VSLJFXJD[ #FO$ISJTUFOTFO

RxJava 入門

RxJava 入門

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