AndroidでJava8

Transcript

1. "OESPJE
   Ͱ+BWB !O@NPSJPLB
   ؔ੢ϞόΠϧΞϓϦݚڀձ
   
   

2. "CPVU
   NF w ੝Ԭ
   ঘه !O@NPSJPLB
   w ϑϦϡʔגࣜձࣾͰ৭ʑͳ։ൃ΍ͬͯ·͢ αʔό αΠυ+BWB
   "OESPJE

   
   J04
   FUD
   w Ҏલʹۀ຿ͰϖϯΪϯࣂ͍ͬͯͨ͜ͱ͕͋Γ·͢

3. 'JSTU ,PUMJOߦ͚Δਓ͸,PUMJO΍Ζ͏ʂ

4. "OESPJE
   +BWB w +BWB·ͰରԠ
   4%,
   W
   w USZXJUISFTPVSDFߏจ͸NJO4EL7FSTJPO
   Ҏ߱ Ͱར༻Մೳ
   

5. "OESJE
   +BWB
   1SPCMFNT w ಗ໊ΫϥεΛΑ͘࢖͏"OESPJE։ൃͰ͸ίʔυ͕৑ ௕
   w 3Y"OESPJEΛ࢖͍ͬͯΔͱ͞ΒʹݦஶʹՄಡੑ͕ Լ͕Δ
   w 

6. ͚ͩͲ+BWB΋ͳΒ
   ·ͩ΍ΕΔ͸ͣ

7. … final Button button = new Button(this); button.setOnClickListener(new OnClickListener() {

   public void onClick(View v) { // ΫϦοΫॲཧ } }); … … final Button button = new Button(this); button.setOnClickListener(view -> { // ΫϦοΫॲཧ }); … +BWB +BWB +BWB
   $PEF

8. +BWB
   /FX
   'FBUVSFT w ϥϜμࣜ
   w ΠϯλʔϑΣΠεͷ࢓༷มߋ
   w ετϦʔϜ"1*
   w 0QUJPOBMͷಋೖ
   w

   +BWB'9
   w ೔෇ͱ࣌ࠁͷ৽ͨͳ"1*
   w /BTIPSO
   +BWB4DSJQU
   Τϯδϯ
   w ฒߦॲཧͷػೳڧԽ

9. ݁ߏଟ͍

10. 8IZ
    +BWB
    JT
    OPU
    TVQQPSUFE w ͦ΋ͦ΋"OESPJEΞϓϦ͸+BWB7.Ͱಈ͍͍ͯΔΘ ͚Ͱ͸ͳ͍
    w +BWBͷόΠτίʔυzJOWPLFEZOBNJDz +43 ʹ ͍ͭͯEY͕ରԠ͍ͯ͠ͳ͍ͷͰ͸ͳ͍͔
    w

    +BWB࢓༷΋׬શʹ͸ຬ͍ͨͯ͠ͳ͍ʁ

11. Ͳ͏ʹ͔ͳΒΜ͔ʁ

12. 3FUSPMBNCEB IUUQTHJUIVCDPNPSGKBDLBMSFUSPMBNCEB
    ϥϜμࣜͳͲͷ+BWB
    ͰίϯύΠϧ͞ΕͨόΠτίʔ υΛ+BWB
    
    
    PS
    ʹ࣮ͯߦग़དྷΔΑ͏ʹ͠·͢

13. .FDIBOJTN +BWB
    KBWBϑΝΠϧ +BWB
    DMBTTϑΝΠϧ +BWB
    DMBTTϑΝΠϧ "OESPJE
    EFYϑΝΠϧ KBWBD⾣

    BTN⾣
    SFUSPMBNCEB EY⾣

14. JOWPLFEZOBNJD
    ˣ
    JOWPLFWJSUVBM
    FUD

15. 'FBUVSFT w -BNCEB
    FYQSFTTJPOT
    w .FUIPE
    SFGFSFODFT
    w %FGBVMU
    NFUIPET
    
    4UBUJD
    NFUIPET
    PO
    JOUFSGBDFT W
    d
    

    w 5SZXJUISFTPVSDFT
    TUBUFNFOUT

16. *OUSPEVDUJPO buildscript { repositories { jcenter() } dependencies { classpath

    'me.tatarka:gradle-retrolambda:3.2.3' } } repositories { jcenter() } apply plugin: 'com.android.application' apply plugin: 'me.tatarka.retrolambda' CVJMEHSBEMF

17. *NQSFTTJPO w ϓϩμΫτʹ૊ΈࠐΜͰ໰୊ͳ͘ಈ࡞͍ͯ͠Δ
    w গਓ਺νʔϜͰͷར༻͕ਪ঑͞Εͦ͏ɻར༻ग़དྷͳ ͍+BWB
    "1*ʹ͍ͭͯࣄલʹڞ༗ͳͲඞਢ
    w ίʔυϨϏϡʔ͕େ෼ḿ͍ͬͯΔؾ͕͢Δ

18. 0UIFS w 0QUJPOBMͷಋೖ
    ⾣
    3Y+BWB0QUJPOBM
    'VODUJPOBM
    +BWB
    HVBWB
    w ετϦʔϜ"1*
    ⾣
    TUSFBNTVQQPSU
    'VODUJPOBM
    +BWB

    
    (4$PMMFDUJPO
    w +BWB'9
    ⾣
    +BWB'91PSUT
    w ೔෇ͱ࣌ࠁͷ৽"1*
    ⾣
    5ISFF5FO
    +PEB5JNF
    "OESPJE

19. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ