bonfire android #2

Transcript

1. ͋ΕɺࠓͬͯiOSΑΓAndroidΞϓϦͷ΄͏͕
   ࡞ͬͨ΄͏͕Α͘ͳ͍ʁ
   #POpSF"OESPJE
   

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3. δϟϯϘ@jumboOrNot
   Kentaro Haneda
   Mobile Engineer@RareJob
   Tech Lead@LandSkip

   Swift/kotlin/golang/WebRTC
   

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4. ͋ΕɺࠓͬͯiOSΑΓAndroidΞϓϦͷ΄͏͕
   ࡞ͬͨ΄͏͕Α͘ͳ͍ʁ
   #POpSF"OESPJE
   

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5. ࠓ೔ͷ͓࿩
   ·ͩkotlinʢAndroidʣΛ΍ͬͯͳ͍ਓ޲͚ʹ
   ʮͦΖͦΖkotlin࢝ΊΑ͏Αʯͬͯ࿩Λ͍ͨ͠
   ↓
   ʮͦΕ͸ͳͥʯ
   ʮͲΜͳαʔϏεɾϑΣʔζͰͦ͏ͳͷ͔ʯ
   ↓
   ʮJavaΑΓ͜Μ͚͍͍ͩͧʂʯ
   ʮ࡞ΔͳΒ͜ͷลؾΛ͚ͭͯ͜ʯ
   

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6. ಋೖ
   “ͳͥAndroidΞϓϦΛ࡞Δͷʁ”
   

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7. 2017೥಄ͷσόΠεγΣΞ
   Ҿ༻: http://www.idc.com/promo/smartphone-market-share/os
   http://www.ai-bibo.net/entry/2017/02/10/113350, https://www.kantarworldpanel.com/global/smartphone-os-market-share/
   14.7
   49.5
   16.4
   42
   4.3
   85
   49
   83.5
   56.4
   94.4
   0.2 0.95 1.42 1.61 1.3
   0
   20
   40
   60
   80
   100
   120
   
   
   ios android
   

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8. 2016೥ͷϚʔέοτऩӹϥϯΩϯά
   ■ iOS
   1Ґ China
   2Ґ Unites States
   3Ґ Japan
   Android

   1Ґ Japan
   2Ґ United States
   3Ґ South Korea
   Ҿ༻: https://www.appannie.com/jp/insights/market-data/app-annie-2016-retrospective/
   ೔ຊ͸DL਺ͱऩӹֹ͕͍ۚۙਪҠͰ
   ಈ͍͍ͯΔɻ
   ୯ՁͰݟΔͱؖࠃͱ͔͸DL਺͕গͳׂ͍ʹ
   ऩӹֹ͕ଟ͍ͷͰ୯Ձ͕େ͖͍ɻ
   ଞࠃϦʔδϣϯ΁ͷల։Λ͍ͯ͠Δ
   ΞϓϦʹؔ܎͍ͯ͠Δਓ͸ͥͻAppAnnieͷ
   2016೥ͷϨϙʔτΛݟ͍ͯͩ͘͞ɺ
   ௒໘ന͍Ͱ͢
   

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9. ͱ͸͍͑
   ݱ࣮໰୊ͱͯ͠େମͷ৽نαʔϏεͷλʔήοτʹͳΔ
   ϘϦϡʔϜκʔϯʹ͸iOSϢʔβʔ͕ଟ͍
   → iOS͔Β࢝ΊΔαʔϏε͸ඇৗʹଟ͍
   

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10. Ͱ͸ͦΜͳதɺͲΜͳαʔϏε͕΍Δ΂͖ʁ
    • ๏ਓ޲͚ʹରԠ͢Δ৔߹
    - ๏ਓ୺຤΍҆ՁͳλϒϨοτͰͷల։͕ݟࠐ·ΕΔͨΊ

    • ւ֎΁ͷϦϦʔε͕ܾ·͍ͬͯΔɺείʔϓʹ͋Δ৔߹
    - ଟ͘ͷࠃ͸AndroidγΣΞ͕େ͖͍ͨΊ

    • webαʔϏε͕͢Ͱʹ͋Δ৔߹
    - طଘސ٬ͷधཁͷݕূͱαʔϏε༏Ґੑͱͯ͠ͷҐஔ෇͚

    σόΠε͕૿͑Δ͜ͱ͸୯७ʹίετͳͷͰɺλΠϛϯάͱ
    Ϧιʔε͸ࣄۀαΠυͰ૬ஊͯ͠΍Γ·͠ΐ͏
    

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11. ྫʣฐࣾ
    • ๏ਓ޲͚ʹରԠ͢Δ৔߹
    - ๏ਓ୺຤΍҆ՁͳλϒϨοτͰͷల։͕ݟࠐ·ΕΔͨΊ

    • ւ֎΁ͷϦϦʔε͕ܾ·͍ͬͯΔɺείʔϓʹ͋Δ৔߹
    - ଟ͘ͷւ֎Ϧʔδϣϯ͸AndroidγΣΞ͕େ͖͍ͨΊ

    • webαʔϏε͕͢Ͱʹ͋Δ৔߹
    - طଘސ٬ͷधཁͷݕূͱαʔϏε༏Ґੑͱͯ͠ͷҐஔ෇͚

    ্هͷཧ༝͔ΒͳΔૣͰඞཁɺ݁Ռ
    Ϣʔβʔൺ͸ iOS:Android Ͱ 4:1͘Β͍
    Ͱ΋ߋ৽ස౓͸ಉ͘͡Β͍
    

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12. ϨΞδϣϒӳձ࿩ΞϓϦ
    Ͱ͖͕͋Γ͕ͪ͜Β
    

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13. 3BSF+PCΞϓϦ J04 "OESPJE
    ։ൃݴޠ 4XJGU LPUMJO
    ։ൃ؀ڥ 9DPEF "OESPJE4UVEJP
    ΞʔΩςΫνϟ 3Y4XJGU.77. 3Y+BWB.77.
    ओͳϥΠϒϥϦ
    3Y4XJGU "1*,JU
    )JNPUPLJ 3FBMN
    3Y+BWB 3FUSpU 

    0L)551 3YCJOE
    Ξοϓσʔτස౓ গ ଟ
    ໰͍߹Θͤ݅਺ ଟ গ
    Ϋϥογϡ গ ଟ
    Ϣʔβʔൺ཰
    ͦͯ͠1೥΄Ͳӡ༻ͯͨ݁͠Ռ
    

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14. ϦϦʔεαΠΫϧ
    ɾΫϦΤΠςΟϒվળ

    εΫγϣɺνϡʔτϦΞϧɺಈըɺϔομʔը૾ͳͲ͸GooglePlayͷ
    ABςετͷػೳͰݕূ͔ͯ͠ΒiOSʹ൓ө͢Δ
    ɾ΍ͬͨ΄͏͕͍͍͚Ͳɺͪΐͬͱࣗ৴ͳ͍΋ͷ
    ·ͣAndroidͰϦϦʔεͯ͠ɺظؒΛઃ͚ͯݕূͯ͠iOSͰϦϦʔε

    ͳ͘͢΋ͷ΋͋Δ
    ɾϏδωεཁ݅ͰϚετͳ΋ͷ
    Android͔Βઌʹग़͚͢ͲɺͦΕͰAPI΍࢓্༷໰୊ͳ͚Ε͹
    iOS͙͢ϦϦʔε
    

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15. ʮ΍͍͖ͬͯʯΛߟ͑Δ
    “͡Ό͋Ͳ͏࡞Δͷ͔ɾ࡞ΕΔͷ͔”
    

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16. kotlin͸਺ଟͷαΠίʔʹܙ·Ε͍ͯΔ
    ɾExtension
    ɾScope Function(let/apply/with/run)
    ɾEnum
    ͦͷଞॾʑ
    

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17. kotlin͸਺ଟͷαΠίʔʹܙ·Ε͍ͯΔ
    ɾExtension
    ɾScope Function(let/apply/with/run)
    ɾEnum
    ͜ΕΒͷศརػೳ΋ͪΌΜͱ࢖͏ɺ

    ϝϦοτΛ೺Ѳͯ͠ਐΊͳ͍ͱ΋͍ͬͨͳ͍ʂ
    iOSΤϯδχΞ͕͢Ͱʹ౿ΜͰ͖ͨ

    Ξϯνύλʔϯ/ྫΛݩʹ࿩͢
    

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18. Extension ʢΞϯνύλʔϯʣ
    fun String.encrypt():String{
    //...
    return encrypted
    }
    fun String.toDeviceDate():Date{
    //...
    return date
    }
    fun String.toJPDate():Date{
    //...
    return date
    }
    fun String.convertRJTDateString():String{
    //…
    return converted
    }
    StringExt.kt
    

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19. Extension ʢΞϯνύλʔϯʣ
    fun String.encrypt():String{
    //...
    return encrypted
    }
    fun String.toDeviceDate():Date{
    //...
    return date
    }
    fun String.toJPDate():Date{
    //...
    return date
    }
    fun String.convertRJTDateString():String{
    //…
    return converted
    }
    StringExt.kt
    ࣗ༝౓͕ߴ͍Ώ͑ʹ
    • ϑΝΠϧ໊͕த਎Λද͞ͳ͍
    • είʔϓΛ෼͚ʹ͍͘
    • ࢓༷͕Ṗϝιουͭ͘Γ͕ͪ
    Ξϯν
    

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20. //region encrypt/decrypt
    fun String.encrypt():String{
    //...
    return encrypted
    }
    //endregion
    //region convert string
    fun String.convertSpecificType():String{
    //…
    return converted
    }
    //endregion
    String+Convert.kt
    String+Date.kt
    fun String.toJPDate():Date{
    //...
    return date
    }
    fun String.convertRJTDateString():String{
    //…
    return converted
    }
    ผ͚Δɾςετॻ͘
    • ϑΝΠϧ໊Λ{{class}}+{{category}}.kt
    • regionͰϝιουΛ੔ཧ
    • ͳΔ΂͘ςετΛॻ͜͏
    ͜͏͠Α͏
    Extension ʢղʣ
    

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21. είʔϓؔ਺ʢΞϯνύλʔϯʣ
    check1?.let{ c1 ->
    check2?.let{ c2 ->
    check3.let{ c3 ->
    // ...
    }
    }
    }
    ifͱletΛࠞಉ͢Δ
    • ωετ͕ͪ͠
    • είʔϓؔ਺ͱ͍͏͔ifจΈ͍ͨʹ࢖ΘΕΔ
    Ξϯν
    

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22. είʔϓؔ਺ʢղʣ
    if (check1 != null && check2 != null && check3 != null){
    // ...
    }
    val ok:OK? = check1?.let{ it.toOK() }
    ࢖͍Ͳ͜Λ෼͚Δ
    • جຊతʹifจͰnull൑ఆ
    • ͦΕҎ֎ͷcast΍஋Λࢀরͨ͠Ωϟετͷ࣌ʹ࢖͏
    ͜͏͠Α͏
    

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23. Enum
    // SwiftͱҟͳΔϙΠϯτ1. ෳ਺ͷॳظ஋ͷઃఆͱΞΫηε
    enum class Student(val firstName:String, val lastName:String, val age:Int){
    STUDNET1(firstName = "tarou", lastName = "tanaka", age = 10),
    STUDNET2(firstName = "jirou", lastName = "suzuki", age = 12)
    }
    print(Student.STUDNET1.firstName) // tarou
    print(Student.STUDNET2.firstName) // jirou
    print(Student.STUDNET1.toString()) // STUDNET1
    // SwiftͱҟͳΔϙΠϯτ2. ྻڍܕఆ਺ͷར༻ʹΑΓfilter΍foreach͕࢖͑Δ
    Student.values().forEach { student ->
    print(student.firstName)
    }
    kotlinʹ͓͚Δenum͸classͰ͋ΔͷͰɺෳ਺ͷॳظ஋Λ࣋ͬͨΓ

    Java४ڌͳͷͰͰ͖Δ͜ͱ͕ଟ͍˕
    ࢀߟ: https://dogwood008.github.io/kotlin-web-site-ja/docs/reference/enum-classes.html
    

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24. EnumʢΞϯνύλʔϯʣ
    enum class TestType{
    case1,
    case2,
    case3
    }
    val type = TestType.case1
    when (type){
    TestType.case1 -> {}
    }
    SwiftͰ࣮૷͞ΕͨΑ͏ͳwhenͰʮશྻڍ͞Εͯͳ͍ʯ͔ͭʮelse͕ͳ͍ʯ৔߹Ͱ΋
    Τϥʔ͕ग़ͳ͍ͷͰɺྻڍ࿙ΕΛੜΉ
    ྻڍ࿙ΕͰCompile Errorग़ͯ΄͍͠
    • Πϕϯτϩάͷ࣮૷࿙Εͱ͔๷͙ͷʹ

    iOSͰ͔ͭͬͯͨΓͨ͠
    Ξϯν
    

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25. Enumʢղʣ
    fun needCallAllTestCase(type:TestCase){
    val res = when (type){
    is TestCase.Case1 -> {
    }
    is TestCase.Case2 -> {
    }
    is TestCase.Case3 -> {
    }
    }
    }
    sealed class TestCase {
    class Case1(val params:Any) : TestCase()
    class Case2(val params:Any) : TestCase()
    class Case3(val params:Any) : TestCase()
    }
    ࢀߟ: https://medium.com/@da_pacheco/using-kotlins-sealed-class-to-approximate-swift-s-enum-with-associated-
    data-7e0abac88bbf
    Sealed Class࢖͏
    • ͪΌΜͱCompile Errorग़Δͧʂ
    ͜͏͠Α͏
    

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26. ·ͱΊ
    ແཧ΍Γಋೖ͢Δͷ͸ྑ͘ͳ͍͚Ͳɺ
    ଟ͘ͷελʔτΞοϓ΍αʔϏε͸AndroidΞϓϦΛ࡞Δ
    Մೳੑ͕͋Δ͠ɺࠓճͷΑ͏ͳΞϯνύλʔϯʹߦ͖ண͘ͷͰ͸ʁ
    null҆શͳͲͷઌഐͰ͋ΔiOSΤϯδχΞ͕౿ΜͰདྷͨ஍ཕΛ

    ·ͨ౿·ͳ͍Α͏ʹφϨοδΛऔΓೖΕͯߦ͖·͠ΐ͏
    Enum
    Scope
    Function
    Extension
    

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27. https://pixta-inc.connpass.com/event/70049/
    

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