Transition at RxJava 1.x to 2.x

5SBOTJUJPOBU3Y+BWBYUPY 3Y+BWBYַ׵3Y+BWBYפך獳遤

3ZVUBSP.JZBTIJUB $IBU8PSL !SZVHPP@

3Y+BWB 3FBDUJWF&YUFOTJPOTGPSUIF+7. "OESPJEꟚ涪ַ׵鋅גծ葿ղדֹ׷ ؝ؙٖءّٝ乼⡲ "TZOD5BTLך➿׻׶
%BUBCJOEJOH +BWB"1*ך➿׻׶ 4USFBN 0QUJPOBM &WFOU#VT

3Y+BWBY 㸜㹀晛ٔٔ٦أ 3FBDUJWF4USFBNTך➬圫彊䬿 ➭ך㹋鄲חכ"LLB4USFBNTהַ 3Y+BWBYַ׵㢌刿ָ׉ֿ׉ֿ֮׷

3Y+BWBYח獳遤ׅ׷ (JU)VCך8IBUˏTEJFSFODFJO׾铣׬ ׮ֻ׮ֻה"1*׾刿倜ׅ׷ 3Y+BWB鸬䵿ٓ؎ـٓٔ׾،حفر٦زׅ׷ ⹛⡲然钠

/POOVMM Observable.<Void>create(emitter -> { emitter.onNext(null); // NPE });

/POOVMM enum Notification { INSTANCE; } Observable.<Object>create(emitter -> { emitter.onNext(Notification.INSTANCE);
});

/POOVMM OVMM׾FNJUׅ׷ֿהכדֹזְ 0CTFSWBCMF7PJEכ0CTFSWBCMF0CKFDUד  FOVNך⦼׾FNJUׅ׷״ֲח㢌ִ׷ NBQؔلٖ٦ة٦זודSFUVSOOVMM׍ׯ׏ג׋׵  ⢽ִל/VMM0CKFDUػة٦ٝד㼎䘔ׅ׷
-JHIUXFJHIU4USFBN"1*ה穈׫さ׻ׇג  ⦼׾0QUJPOBMדٓحفׅ׷ך׮葺ְַ׮

,JDLTUBSUFSBOESPJEPTT

#BDLQSFTTVSF Y List<Integer> nums; // Huge list Observable<Integer>create(emitter -> {
for (int i : nums) { emitter.onNext(i); } }) .onBackPressureBuffer() .subscribe(i -> { /* ignored */ });

#BDLQSFTTVSF Y List<Integer> nums; // Huge list Flowable<Integer>create(emitter -> {
for (int i : nums) { emitter.onNext(i); } }, BackpressureStrategy.BUFFER) .subscribe(i -> { /* ignored */ });

#BDLQSFTTVSF 0CTFSWBCMFד#BDLQSFTTVSFכ《׶䪔ִזְ 'MPXBCMF׾⢪ֲ 0CTFSWBCMFה'MPXBCMF׾幉㖈ׇׁ׷הֹכ岣䠐 0CTFSWBCMFUP'MPXBCMF
'MPXBCMFUP0CTFSWBCMF 'MPXBCMFח㺔ׇ׋倯ָ#BDLQSFTTVSFח㼎䘔דֹ׉ֲ

4VCKFDU Y Subject<String, String> subject =  new SerializedSubject(  PublishSubject.create());

4VCKFDU Y Subject<String> subject =  PublishSubject.<String>create()  .toSerialized(); Processor<String, String> processor
=  PublishProcessor.<String>create()  .toSerialized();

4VCKFDU 4FSJBMJ[FE4VCKFDUכOFXדכזֻ  傀㶷ך4VCKFDUַ׵UP4FSJBMJ[FEًاحسד⡲׷ 4VCKFDUדכ#BDLQSFTTVSFכ《׶䪔ִזְ 1SPDFTTPS׾⢪ֲ

4DIFEVMFST Y .subscribeOn(Schedulers.immediate())

4DIFEVMFST Y .subscribeOn(Schedulers.trampoline())

4DIFEVMFST 4DIFEVMFSTJNNFEJBUFכYדכ㶷㖈׃זְ ➿׻׶חUSBNQPMJOF׾⢪ֲ 5ISFBE-PDBMחُؗ٦؎ؚٝ׃ג鷵如Ⳣ椚

3Y#JOEJOH 3Y#JOEJOHכ7JFXך؎كٝز׾  0CTFSWBCMFח㢌䳔׃גֻ׸׷ ⥋걾ה㸜䗰ך+BLF8IBSUPO⯓欰⡲ㅷ 植㖈NBTUFSـٓٝثָ3Y+BWBYח  㼎䘔׃גְ׷ָծ姻䒭ٔٔ٦أָת׌

3Y#JOEJOH allprojects {  repositories {  maven { url 'https://jitpack.io' } 
}  } compile 'com.github.JakeWharton.RxBinding:rxbinding:71f3a1b' CVJMEHSBEMF SPPU CVJMEHSBEMF BQQ ˟SYCJOEJOHBQQDPNQBUWװSYCJOEJOHTVQQPSUW׮ず圫ךغ٦آّٝ䭷㹀ד0,

3Y+BWBYח獳遤׃ג ׮ֻ׮ֻה堣唒涸ח縧ֹ䳔ִגְֻ OVMM׾FNJU׃ג׷ה/1&חז׷ךד岣䠐ָ䗳銲ずׄせ⵸ך"1*ד׮䮙⹛ָ㢌׻׏ג׷׮ך׮،ٔ ⢽ִל0CTFSWBCMFUP-JTUכ4JOHMF׾鵤ׅ
4JOHMF.BZCF$PNQMFUBCMF׾鵤ׅ㢌刿כ㢳ְ 8IBUTEJFSFOUJO׾擾铣ׅץ׃ ㉏겗搀ֻ麊欽דֹגְ׷

&OKPZ3Y4USFBN-JGF

Transition at RxJava 1.x to 2.x

Transition at RxJava 1.x to 2.x

Ryutaro Miyashita

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5SBOTJUJPOBU3Y+BWBYUPY 3Y+BWBYַ׵3Y+BWBYפך獳遤

3ZVUBSP.JZBTIJUB $IBU8PSL !SZVHPP@

3Y+BWB 3FBDUJWF&YUFOTJPOTGPSUIF+7. "OESPJEꟚ涪ַ׵鋅גծ葿ղדֹ׷ ؝ؙٖءّٝ乼⡲ "TZOD5BTLך➿׻׶

3Y+BWBY 㸜㹀晛ٔٔ٦أ 3FBDUJWF4USFBNTך➬圫彊䬿 ➭ך㹋鄲חכ"LLB4USFBNTהַ 3Y+BWBYַ׵㢌刿ָ׉ֿ׉ֿ֮׷

3Y+BWBYח獳遤ׅ׷ (JU)VCך8IBUˏTEJFSFODFJO׾铣׬ ׮ֻ׮ֻה"1*׾刿倜ׅ׷ 3Y+BWB鸬䵿ٓ؎ـٓٔ׾،حفر٦زׅ׷ ⹛⡲然钠

/POOVMM Observable.<Void>create(emitter -> { emitter.onNext(null); // NPE });

/POOVMM enum Notification { INSTANCE; } Observable.<Object>create(emitter -> { emitter.onNext(Notification.INSTANCE);

/POOVMM OVMM׾FNJUׅ׷ֿהכדֹזְ 0CTFSWBCMF7PJEכ0CTFSWBCMF0CKFDUד  FOVNך⦼׾FNJUׅ׷״ֲח㢌ִ׷ NBQؔلٖ٦ة٦זודSFUVSOOVMM׍ׯ׏ג׋׵  ⢽ִל/VMM0CKFDUػة٦ٝד㼎䘔ׅ׷

,JDLTUBSUFSBOESPJEPTT

#BDLQSFTTVSF Y List<Integer> nums; // Huge list Observable<Integer>create(emitter -> {

#BDLQSFTTVSF Y List<Integer> nums; // Huge list Flowable<Integer>create(emitter -> {

#BDLQSFTTVSF 0CTFSWBCMFד#BDLQSFTTVSFכ《׶䪔ִזְ 'MPXBCMF׾⢪ֲ 0CTFSWBCMFה'MPXBCMF׾幉㖈ׇׁ׷הֹכ岣䠐 0CTFSWBCMFUP'MPXBCMF

4VCKFDU Y Subject<String, String> subject =  new SerializedSubject(  PublishSubject.create());

4VCKFDU Y Subject<String> subject =  PublishSubject.<String>create()  .toSerialized(); Processor<String, String> processor

4VCKFDU 4FSJBMJ[FE4VCKFDUכOFXדכזֻ  傀㶷ך4VCKFDUַ׵UP4FSJBMJ[FEًاحسד⡲׷ 4VCKFDUדכ#BDLQSFTTVSFכ《׶䪔ִזְ 1SPDFTTPS׾⢪ֲ

4DIFEVMFST Y .subscribeOn(Schedulers.immediate())

4DIFEVMFST Y .subscribeOn(Schedulers.trampoline())

4DIFEVMFST 4DIFEVMFSTJNNFEJBUFכYדכ㶷㖈׃זְ ➿׻׶חUSBNQPMJOF׾⢪ֲ 5ISFBE-PDBMחُؗ٦؎ؚٝ׃ג鷵如Ⳣ椚

3Y#JOEJOH 3Y#JOEJOHכ7JFXך؎كٝز׾  0CTFSWBCMFח㢌䳔׃גֻ׸׷ ⥋걾ה㸜䗰ך+BLF8IBSUPO⯓欰⡲ㅷ 植㖈NBTUFSـٓٝثָ3Y+BWBYח  㼎䘔׃גְ׷ָծ姻䒭ٔٔ٦أָת׌

3Y#JOEJOH allprojects {  repositories {  maven { url 'https://jitpack.io' }

3Y+BWBYח獳遤׃ג ׮ֻ׮ֻה堣唒涸ח縧ֹ䳔ִגְֻ OVMM׾FNJU׃ג׷ה/1&חז׷ךד岣䠐ָ䗳銲ずׄせ⵸ך"1*ד׮䮙⹛ָ㢌׻׏ג׷׮ך׮،ٔ ⢽ִל0CTFSWBCMFUP-JTUכ4JOHMF׾鵤ׅ

&OKPZ3Y4USFBN-JGF