RxNight

2015-11-19

Transcript

1. Reactive Practices at Kotlin 2015/11/05 RxNight @mattak
2. RxJava+KotlinͰͷ tips঺հ͢ΔΑ
3. 1.notNull() -ɹnullͰͳ͍΋ͷΛ௨͢ -
4. 
   %FpOJUJPO
   GVO
   5
   0CTFSWBCMF5 OPU/VMM 
   0CTFSWBCMF5
   \

   
   
   
   SFUVSO
   UIJTpMUFS
   \
   JU
   
   OVMM
   ^NBQ
   \
   JU
   ^
 ^ 
   6TBHF
   WBM
   PCTFSWBCMF
   
   0CTFSWBCMFKVTU 
   OVMM
    OPU/VMM 
 PCTFSWBCMFTVCTDSJCF
   \

   
   
   
   QSJOUMO JU
   
   
   
 ^
5. 2.retry() -ɹࣦഊͯ͠΋·ͨsubscribe -
6. CVUUPO$MJDL

   
   
   
   
   
   
   
   qBU.BQ
   \
   OFUXPSL3FRVFTU
   ^
   
   ࣦഊ͢Δͱ
   APO&SSPS A

   
   
   
   
   
   
   
   SFUSZ
   
   PO&SSPS͕ݺ͹Εͯ΋SFUSZͰ࠶ͼTVCTDSJCF͞ΕΔ

   
   
   
   
   
   
   
   TVCTDSJCF
   \

   
   
   
   
   
   
   
   
   
   
   
   
   PO/FYU࣌ͷॲཧ

   
   
   
   
   
   
   
   ^
7. 3.doOnNext() -ɹ෭࡞༻Λ༩͑Δ -
8. 0CTFSWBCMFKVTU    

   
   
   
   
   
   
   
   EP0O/FYU
   
   
   
   
   
   \
   -PHW %&#6(
   PO/FYU 
   
   
   JU
   ^

   
   
   
   
   
   
   
   EP0O&SSPS
   
   
   
   
   \
   -PHW %&#6(
   PO&SSPS 
   
   
   JU
   ^

   
   
   
   
   
   
   
   EP0O$PNQMFUFE
   \
   -PHW %&#6(
   PO$PNQMFUFE 
   ^

   
   
   
   
   
   
   
   EP0O&BDI
   
   
   
   
   
   \
   -PHW %&#6(
   PO&BDI 
   
   
   JU
   ^

   
   
   
   TVCTDSJCF
   \
   ^ // σόοΫ͢Δͱ͖ʹศར
9. 4.CompositeSubscription -ɹsubscriptionΛ·ͱΊΔ -
10. WBM
    TVCTDSJQUJPO
    
    0CTFSWBCMFKVTU    TVCTDSJCF
    \^
 WBM
    TVCTDSJQUJPO
    
    0CTFSWBCMFKVTU B C D TVCTDSJCF
    \^
 WBM
    DPNQPTJUF4VCTDSJQUJPO
    
    $PNQPTJUF4VCTDSJQUJPO 
 
 DPNQPTJUF4VCTDSJQUJPOBEE TVCTDSJQUJPO 
 DPNQPTJUF4VCTDSJQUJPOBEE TVCTDSJQUJPO 
 DPNQPTJUF4VCTDSJQUJPOVOTVCTDSJCF // Ұؾʹunsubscribe͢Δͱ͖ʹศར
11. 5.onErrorResumeNext -ɹerrorΛແࢹ͍ͨ͠ -
12. QVCMJD
    PCKFDU
    3FTPVSDFT&SSPS
    \

    
    
    
    WBM
    FSSPS
    1VCMJTI4VCKFDU5ISPXBCMF
    CZ
    MB[Z
    \
    1VCMJTI4VCKFDUDSFBUF5ISPXBCMF
    ^
 ^
 
 GVO
    5
    0CTFSWBCMF5JOUFSDFQU/FUXPSL&SSPS 
    0CTFSWBCMF5
    \

    
    
    
    SFUVSO
    UIJT

    
    
    
    
    
    
    
    
    
    
    
    EP0O&SSPS
    \
    JG
    JU
    JT
    3FUSPpU&SSPS
    3FTPVSDFT&SSPSFSSPSPO/FYU JU
    ^

    
    
    
    
    
    
    
    
    
    
    
    PO&SSPS3FTVNF/FYU
    \
    JG
    JU
    JT
    3FUSPpU&SSPS
    0CTFSWBCMFFNQUZ
    FMTF
    UISPX
    JU
    ^
 ^ // Network errorΛ interceptͯ͠௨஌
13. 6.combineAndDispose -ɹൃՐͤͭͭ͞ແࢹ͍ͨ͠ -
14. GVO
    5
    3
    0CTFSWBCMF5DPNCJOF"OE%JTQPTF TJHOBM0CTFSWBCMF
    0CTFSWBCMF3 
    0CTFSWBCMF5
    \

    
    
    
    SFUVSO
    0CTFSWBCMFDPNCJOF-BUFTU UIJT
    TJHOBM0CTFSWBCMF
    \
    EBUB
    TJHOBM
    
    EBUB
    ^ 
 ^ // Definition GVO
    DIFDL&SSPS 
    0CTFSWBCMF*OU
    \

    
    
    
    SFUVSO
    0CTFSWBCMF

    
    
    
    
    
    
    
    
    
    
    
    FSSPS*OU *MMFHBM4UBUF&YDFQUJPO TUBUF
    JT
    XSPOH 
 ^
 
 GVO
    FYFDVUF 
    0CTFSWBCMF*OU
    \

    
    
    
    SFUVSO
    0CTFSWBCMF

    
    
    
    
    
    
    
    
    
    
    
    KVTU 
    
     

    
    
    
    
    
    
    
    
    
    
    
    DPNCJOF"OE%JTQPTF DIFDL&SSPS 
 ^ // Usage: ΤϥʔνΣοΫ͚͍ͩͨ͠
15. 7.MergeReactiveProperty -ɹmergeͭͭ͠ɺ஋Λอ͍࣋ͨ͠ -
16. // Definition DMBTT
    .FSHF3FBDUJWF1SPQFSUZ5
    
    "OZ QSJWBUF
    WBM
    DPODBU0CTFSWBCMF
    0CTFSWBCMF5
    \

    
    
    
    QSJWBUF
    MBUFJOJU
    WBS
    WBMVF
    5

    
    
    
    QSJWBUF
    WBM
    DIBOOFM
    
    #FIBWJPS4VCKFDUDSFBUF5 

    
    
    
    QSJWBUF
    WBS
    EJSUZ
    
    GBMTF
 

    
    
    
    GVO
    HFU 
    5
    \
    SFUVSO
    WBMVF
    ^

    
    
    
    GVO
    TFU OFX7BMVF
    5
    \

    
    
    
    
    
    
    
    WBMVF
    
    OFX7BMVF

    
    
    
    
    
    
    
    DIBOOFMPO/FYU OFX7BMVF 

    
    
    
    ^
 

    
    
    
    WBM
    PCTFSWBCMF
    0CTFSWBCMF5

    
    
    
    
    
    
    
    HFU
    
    0CTFSWBCMF

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    NFSHF 

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    DPODBU0CTFSWBCMFEP0O/FYU
    \
    EJSUZ
    
    USVF
    ^ 

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    DIBOOFM

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    EP0O/FYU
    \
    JG
    EJSUZ
    WBMVF
    
    JU
    EJSUZ
    
    GBMTF
    ^
 ^