Kotlin Nativeでクロスプラットフォーム開発 / Cross-platform development with Kotlin Native

Transcript

1. Kotlin/NativeͰ
   ΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   

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2. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Who is?
   ౎ཱ࢈ۀٕज़ߴઐ(ຊՊ/ઐ߈Պ)
   ిؾ௨৴େֶେֶӃ
   CAʹ2017೥৽ଔͰೖࣾ
   AbemaTV ։ൃہ/AndroidνʔϜ
   ஛ా ஐʢ͚ͨͩ ͞ͱ͠ʣ
   satsukies
   satsukies
   Takeda Satoshi
   

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3. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   ΨδΣοτ ΫϧϚ εϙʔπ
   My hobby
   

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4. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Try Kotlin/Native
   What’s Kotlin
   Agenda
   Conclusion
   

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5. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Try Kotlin/Native
   What’s Kotlin
   Agenda
   Conclusion
   5
   

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6. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   What’s
   • JetBrains͕։ൃͨ͠੩తܕ෇͚ݴޠ
   • JavaΛΑΓ؆ܿɾ҆શʹ
   • Null҆શ / ֦ுؔ਺ / Ϋϩʔδϟ / etc..
   • OSඇґଘɺJVM্Ͱಈ࡞
   • Javaͱͷ૬ޓӡ༻ੑ͕֬อ͞Ε͍ͯΔ
   • Javaͷࢿ࢈͕׆͔ͤΔ
   

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7. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Kotlin 1.3
   Kotlin/Native Beta release
   Google I/O 2017
   Android Official Support
   Kotlin 1.0
   Feb 2016
   May 2017
   Oct 2018
   History
   

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8. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Kotlin/Native
   • Kotlin͔Βλʔήοτ؀ڥͰಈ࡞͢ΔωΠςΟϒ

   όΠφϦΛੜ੒͢ΔίϯύΠϥ
   • ಺෦Ͱ͸LLVMΛܦ༝͍ͯ͠Δ
   • αϙʔτͯ͠ΔϓϥοτϑΥʔϜ͸ҎԼͷ௨Γ
   • iOS, Android, Windows, MacOS, Linux, WebAssembly
   

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9. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
   α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
   Μʁ
   

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10. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Kotlin/Native
    • Kotlin͔Βλʔήοτ؀ڥͰಈ࡞͢ΔωΠςΟϒ

    όΠφϦΛੜ੒͢ΔίϯύΠϥ
    • ಺෦Ͱ͸LLVMΛܦ༝͍ͯ͠Δ
    • αϙʔτͯ͠ΔϓϥοτϑΥʔϜ͸ҎԼͷ௨Γ
    • iOS, Android, Windows, MacOS, Linux, WebAssembly
    

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11. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Kotlin/Native
    • Kotlin͔Βλʔήοτ؀ڥͰಈ࡞͢ΔωΠςΟϒ

    όΠφϦΛੜ੒͢ΔίϯύΠϥ
    • ಺෦Ͱ͸LLVMΛܦ༝͍ͯ͠Δ
    • αϙʔτͯ͠ΔϓϥοτϑΥʔϜ͸ҎԼͷ௨Γ
    • iOS, Android, Windows, MacOS, Linux, WebAssembly
    

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12. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    KotlinͰiOSΞϓϦ͕
    ࡞ΕΔʂ
    

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13. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    ૣ଎ೖ໳ͯ͠ΈΔ
    

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14. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Try Kotlin/Native
    What’s Kotlin
    Agenda
    Conclusion
    

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15. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Task Overview
    • ϕʔεϓϩδΣΫτͷ࡞੒ / ઃఆ
    • ڞ༗͢Δίʔυͷ࣮૷
    • AndroidΞϓϦͷઃఆ / ࣮૷
    • iOSΞϓϦͷઃఆ / ࣮૷
    

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16. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Preparing
    • MacOS͕ಈ࡞͢ΔPC
    • Android Studioʢ3.4 Preview Canary 3ʣ
    • ϕʔεͱͳΔProjectΛੜ੒ͨ͠Γ͠·͢
    • Xcodeʢ10.1 10B61ʣ
    • iOSΞϓϦͷͨΊͷઃఆ΍࣮૷ʹ࢖͍·͢
    • Τϥʔʹෛ͚ͳ͍΍Δؾ΍޷ح৺
    

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17. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Generating
    base project
    Android StudioΛ࢖ͬͯϕʔεϓϩδΣΫτΛ࡞੒
    ීஈͷΞϓϦ৽ن࡞੒ͱಉ͡
    

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18. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Generating
    base project
    Android StudioΛ࢖ͬͯϕʔεϓϩδΣΫτΛ࡞੒
    ීஈͷΞϓϦ৽ن࡞੒ͱಉ͡
    

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19. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Creating
    common module
    ڞ௨ͷίʔυΛ࣮૷͢Δ৔ॴΛ࡞੒
    File > New > New Module
    

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20. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Creating
    common module
    ڞ௨ͷίʔυΛ࣮૷͢Δ৔ॴΛ࡞੒
    Java LibraryΛબ୒
    

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21. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Creating
    common module
    ڞ௨ͷίʔυΛ࣮૷͢Δ৔ॴΛ࡞੒
    Java LibraryΛબ୒ > Α͠ͳʹ໊લΛ͚ͭΔ
    Class໊͸ద౰ͰOK
    

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22. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Creating
    common module
    moduleͱඞཁͳϑΝΠϧ͕௥Ճ͞Ε
    settings.gradleʹԿ΍Β௥ه͞Ε͍ͯΔ
    ɹɹɹɹɹɹɹɹ
    ௥Ճͨ͠moduleΛgradleʹೝࣝͤ͞ΔͨΊʹඞཁ
    include ':app', ':ShareCode'
    

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23. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes
    srcʹڞ௨ίʔυ༻ͷσΟϨΫτϦΛ࡞੒
    commonMain/kotlin/{ύοέʔδ໊}/common
    

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24. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes
    ੜ੒ͨ͠σΟϨΫτϦʹ
    ڞ௨ίʔυΛهड़͢ΔΫϥεΛ௥Ճ࣮͠૷
    package net.ddns.satsukies.diveintokotlinnative.common
    expect fun platformName(): String
    fun createApplicationScreenMessage(): String {
    return "Kotlin Rocks on ${platformName()}"
    }
    

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25. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes (android)
    ઌͱಉ͡खॱͰandroid޲͚ͷσΟϨΫτϦΛ௥Ճ
    androidMain/kotlin/{ύοέʔδ໊}/common
    

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26. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes (android)
    ੜ੒ͨ͠σΟϨΫτϦʹΫϥεΛ࡞੒͠
    Android޲͚ͷίʔυΛ࣮૷
    package net.ddns.satsukies.diveintokotlinnative.common
    actual fun platformName(): String = "android"
    

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27. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes (iOS)
    ઌͱಉ͡खॱͰiOS޲͚ͷσΟϨΫτϦΛ௥Ճ
    iosMain/kotlin/{ύοέʔδ໊}/common
    

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28. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    common codes (iOS)
    ੜ੒ͨ͠σΟϨΫτϦʹΫϥεΛ࡞੒͠
    iOS޲͚ͷίʔυΛ࣮૷
    package net.ddns.satsukies.diveintokotlinnative.common
    actual fun platformName(): String {
    return UIDevice.currentDevice.systemName() +
    " " +
    UIDevice.currentDevice.systemVersion
    }
    

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29. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    

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30. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: ‘kotlin-multiplatform'
    kotlin {
    targets {
    final def iOSTarget = System.getenv('SDK_NAME') ?.startsWith("iphoneos")\
    ? presets.iosArm64 : presets.iosX64
    fromPreset(iOSTarget, 'iOS') {
    compilations.main.outputKinds('FRAMEWORK')
    }
    fromPreset(presets.jvm, 'android')
    }
    sourceSets {
    commonMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib-common'
    }
    androidMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib'
    }
    }
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    

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31. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: ‘kotlin-multiplatform'
    kotlin {
    targets {
    final def iOSTarget = System.getenv('SDK_NAME') ?.startsWith("iphoneos")\
    ? presets.iosArm64 : presets.iosX64
    fromPreset(iOSTarget, 'iOS') {
    compilations.main.outputKinds('FRAMEWORK')
    }
    fromPreset(presets.jvm, 'android')
    }
    sourceSets {
    commonMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib-common'
    }
    androidMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib'
    }
    }
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    iOSλʔήοτͷઃఆ
    

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32. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: ‘kotlin-multiplatform'
    kotlin {
    targets {
    final def iOSTarget = System.getenv('SDK_NAME') ?.startsWith("iphoneos")\
    ? presets.iosArm64 : presets.iosX64
    fromPreset(iOSTarget, 'iOS') {
    compilations.main.outputKinds('FRAMEWORK')
    }
    fromPreset(presets.jvm, 'android')
    }
    sourceSets {
    commonMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib-common'
    }
    androidMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib'
    }
    }
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    Androidλʔήοτͷઃఆ
    

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33. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: ‘kotlin-multiplatform'
    kotlin {
    targets {
    final def iOSTarget = System.getenv('SDK_NAME') ?.startsWith("iphoneos")\
    ? presets.iosArm64 : presets.iosX64
    fromPreset(iOSTarget, 'iOS') {
    compilations.main.outputKinds('FRAMEWORK')
    }
    fromPreset(presets.jvm, 'android')
    }
    sourceSets {
    commonMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib-common'
    }
    androidMain.dependencies {
    api 'org.jetbrains.kotlin:kotlin-stdlib'
    }
    }
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    ϥΠϒϥϦͷಡΈࠐΈઃఆ
    

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34. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    What’s happen?
    commonϞδϡʔϧʹ͸ڞ௨ར༻͢ΔίʔυΛ࣮૷
    Common
    fun platformName(): String
    

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35. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    What’s happen?
    Common
    fun platformName(): String
    Android
    iOS 12.1
    λʔήοτຖʹ݁ՌΛม͍͑ͨͱ͖͸Ͳ͏͠Α͏
    

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36. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    expected, actual
    ͪΐ͏ͲabstractͱoverrideΈ͍ͨͳؔ܎[1]
    • ڞ௨ίʔυͰ͸ϝιουʹexpectedΛ෇༩
    • ֤λʔήοτσΟϨΫτϦͷίʔυͰactualΛ࣮૷
    [1]https://aakira.app/blog/2018/10/kotlin-native/
    

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37. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    expected, actual
    [1]https://aakira.app/blog/2018/10/kotlin-native/
    expect fun platformName(): String
    actual fun platformName(): String {
    return UIDevice.currentDevice.systemName() +
    " " +
    UIDevice.currentDevice.systemVersion
    }
    actual fun platformName(): String = "android"
    Android
    iOS
    Common
    

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38. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    AndroidΞϓϦͷίʔυ͔Βڞ௨࣮૷Λ࢖ͬͯΈΔ
    ※AndroidΞϓϦͷ࣮૷͸appϞδϡʔϧ಺Ͱ͢
    

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39. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    app/build.gradleʹڞ௨Ϟδϡʔϧͷݺग़Λ௥ه
    dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    // ڞ௨Ϟδϡʔϧ
    implementation project(':ShareCode')
    …
    }
    

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40. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    android:id="@+id/text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
    activity_main.xmlΛमਖ਼
    TextViewʹίʔυ͔ΒΞΫηεͰ͖ΔΑ͏ʹ͢Δ
    

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41. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    activity_main.xmlΛमਖ਼
    TextViewʹίʔυ͔ΒΞΫηεͰ͖ΔΑ͏ʹ͢Δ
    android:id="@+id/text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
    IDΛׂΓ౰͍ͯͯ͋͛ͯΔ
    

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42. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    MainActivity.ktͰදࣔจࣈྻͱจࣈαΠζΛηοτ
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val textView = findViewById(R.id.text_view)
    textView.text = createApplicationScreenMessage()
    textView.textSize = 24f
    }
    

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43. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    Android App
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val textView = findViewById(R.id.text_view)
    textView.text = createApplicationScreenMessage()
    textView.textSize = 24f
    }
    viewΛ͖ͬ͞ͷID͔Βݟ͚ͭग़͍ͯ͠Δ
    MainActivity.ktͰදࣔจࣈྻͱจࣈαΠζΛηοτ
    

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44. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    MainActivity.ktͰදࣔจࣈྻͱจࣈαΠζΛηοτ
    Implement
    Android App
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val textView = findViewById(R.id.text_view)
    textView.text = createApplicationScreenMessage()
    textView.textSize = 24f
    }
    จࣈྻͱจࣈαΠζΛηοτ
    

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45. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Run Android App
    ࣮ߦͯ͠ΈΔͱ
    ʮKotlin Rocks on Androidʯ
    ͱදࣔ͞Ε·͢ʂ
    

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46. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement
    iOS App
    XcodeΛ࢖ͬͯiOSΞϓϦΛ࡞੒͍͖ͯ͠·͢
    

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47. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Generating
    Xcode project
    Xcodeͷॳظը໘͔Β
    Create a new Xcode project
    

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48. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Generating
    Xcode project
    Single View AppΛબ୒
    

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49. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Generating
    Xcode project
    ໊લΛܾΊɺอଘઌ͸rootϑΥϧμ௚ԼΛࢦఆ
    

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50. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    iOS޲͚ͷϑΝΠϧ͕ੜ੒͞ΕΔΑ͏ʹमਖ਼͢Δ
    

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51. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: 'kotlin-multiplatform'
    kotlin {
    …
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    task packForXCode(type: Sync) {
    final File frameworkDir = new File(buildDir, "xcode-frameworks")
    final String mode = project.findProperty("XCODE_CONFIGURATION") ?.toUpperCase() ?: 'DEBUG'
    inputs.property "mode", mode
    dependsOn kotlin.targets.iOS.compilations.main.linkTaskName("FRAMEWORK", mode)
    from { kotlin.targets.iOS.compilations.main.getBinary("FRAMEWORK", mode).parentFile }
    into frameworkDir
    doLast {
    new File(frameworkDir, 'gradlew').with {
    text = " #!/bin/bash\nexport 'JAVA_HOME=${System.getProperty("java.home")}'\ncd '$
    {rootProject.rootDir}'\n./gradlew \$@\n"
    setExecutable(true)
    }
    }
    }
    tasks.build.dependsOn packForXCode
    

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52. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Fix build.gradle
    CommonϞδϡʔϧ಺ʹ͋Δbuild.gradleΛमਖ਼͠
    ෳ਺ͷϓϥοτϑΥʔϜʹରԠͤ͞Δ
    apply plugin: 'kotlin-multiplatform'
    kotlin {
    …
    }
    // workaround for https: //youtrack.jetbrains.com/issue/KT-27170
    configurations {
    compileClasspath
    }
    task packForXCode(type: Sync) {
    final File frameworkDir = new File(buildDir, "xcode-frameworks")
    final String mode = project.findProperty("XCODE_CONFIGURATION") ?.toUpperCase() ?: 'DEBUG'
    inputs.property "mode", mode
    dependsOn kotlin.targets.iOS.compilations.main.linkTaskName("FRAMEWORK", mode)
    from { kotlin.targets.iOS.compilations.main.getBinary("FRAMEWORK", mode).parentFile }
    into frameworkDir
    doLast {
    new File(frameworkDir, 'gradlew').with {
    text = " #!/bin/bash\nexport 'JAVA_HOME=${System.getProperty("java.home")}'\ncd '$
    {rootProject.rootDir}'\n./gradlew \$@\n"
    setExecutable(true)
    }
    }
    }
    tasks.build.dependsOn packForXCode
    iOSͰඞཁͳϑΝΠϧͷੜ੒λεΫ
    

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53. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Build from
    terminal
    iOS༻ͷϑΝΠϧΛੜ੒ͤ͞ΔͨΊʹbuild
    1. terminalͳͲͰϓϩδΣΫτϧʔτ΁Ҡಈ
    2. ./gradlew build Λ࣮ߦ
    3. ੒ޭ͢Δͱxcode-frameworks͕ੜ੒͞ΕΔ
    

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54. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    .frameworkϑΝΠϧΛಡΈࠐΉઃఆΛߦ͏
    General > Embedded Binaries
    

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55. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    .frameworkϑΝΠϧΛಡΈࠐΉઃఆΛߦ͏
    + > Add Other… > .frameworks΁ͷύεΛࢦఆ
    

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56. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    XcodeͷBitcodeػೳΛOFFʹ͢Δ
    Kotlin/Native͸ωΠςΟϒίʔυΛੜ੒ͯ͠Δ͔Β
    

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57. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    FrameworkݕࡧύεΛ௥Ճ͢Δ
    BuildSettings > Framework Search Path > +
    

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58. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    XcodeͰͷbuild࣌ʹgradle buildΛ࣮ߦ͢Δઃఆ
    Build Phase > + > New Run Script Phase
    

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59. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    XcodeͰͷbuild࣌ʹgradle buildΛ࣮ߦ͢Δઃఆ
    cd {.frameworksͷpath} , gradlewϏϧυίϚϯυ
    

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60. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Project setting
    XcodeͰͷbuild࣌ʹgradle buildΛ࣮ߦ͢Δઃఆ
    Run ScriptΛCompile SourcesΑΓલʹฒͼସ͑
    
    

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61. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement 

    iOS App
    Androidͱಉ༷ʹɺจࣈྻΛදࣔͤͯ͞Έ·͢
    

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62. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement 

    iOS App
    Androidͱಉ༷ʹɺจࣈྻΛදࣔͤͯ͞Έ·͢
    ViewController.swift΁ίʔυΛ࣮૷
    

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63. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement 

    iOS App
    Androidͱಉ༷ʹɺจࣈྻΛදࣔͤͯ͞Έ·͢
    import UIKit
    import ShareCode
    class ViewController: UIViewController {
    override func viewDidLoad() {
    super.viewDidLoad()
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 21))
    label.center = CGPoint(x: 160, y: 285)
    label.textAlignment = .center
    label.font = label.font.withSize(24)
    // ڞ௨Ϟδϡʔϧʹ࣮૷ͨ͠function͕ݺͼग़͍ͤͯΔ
    label.text = CommonKt.createApplicationScreenMessage()
    view.addSubview(label)
    }
    }
    

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64. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement 

    iOS App
    Androidͱಉ༷ʹɺจࣈྻΛදࣔͤͯ͞Έ·͢
    import UIKit
    import ShareCode
    class ViewController: UIViewController {
    override func viewDidLoad() {
    super.viewDidLoad()
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 21))
    label.center = CGPoint(x: 160, y: 285)
    label.textAlignment = .center
    label.font = label.font.withSize(24)
    // ڞ௨Ϟδϡʔϧʹ࣮૷ͨ͠function͕ݺͼग़͍ͤͯΔ
    label.text = CommonKt.createApplicationScreenMessage()
    view.addSubview(label)
    }
    }
    ࠷ॳʹ࡞੒ͨ͠ڞ௨ϞδϡʔϧΛimport
    

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65. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Implement 

    iOS App
    Androidͱಉ༷ʹɺจࣈྻΛදࣔͤͯ͞Έ·͢
    import UIKit
    import ShareCode
    class ViewController: UIViewController {
    override func viewDidLoad() {
    super.viewDidLoad()
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 21))
    label.center = CGPoint(x: 160, y: 285)
    label.textAlignment = .center
    label.font = label.font.withSize(24)
    // ڞ௨Ϟδϡʔϧʹ࣮૷ͨ͠function͕ݺͼग़͍ͤͯΔ
    label.text = CommonKt.createApplicationScreenMessage()
    view.addSubview(label)
    }
    }
    ڞ௨Ϟδϡʔϧͷ࣮૷Λݺͼग़͠
    

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66. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Run iOS App
    ࣮ߦͯ͠ΈΔͱ
    ʮKotlin Rocks on iOS 12.1ʯ
    ͱදࣔ͞Ε·͢ʂ
    

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67. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Compare App
    iOS
    Android
    

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68. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Try Kotlin/Native
    What’s Kotlin
    Agenda
    Conclusion
    

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69. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Conclusion
    • Kotlin/Native͸λʔήοτຖͷωΠςΟϒόΠφ
    ϦΛు͖ग़͢ίϯύΠϥ
    • αϙʔτ͍ͯ͠Δλʔήοτ͸෯޿͍
    • ڞ௨෦෼ΛKotlinͰॻ͚Δͱ͍͏രΞυ㽉
    • ·ͩϕʔλͳͷͰࠓޙͷൃలʹظ଴
    

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70. Kotlin/NativeͰΫϩεϓϥοτϑΥʔϜ։ൃ
    α Πό ʔ Τ ʔ δ Σ ϯ τ / ະ དྷ େ L T େ ձ @ വ ؗ ະ དྷ େ
    Slide, Sample Codes
    satsukies/DiveIntoKotlinNative
    TwitterϑΥϩʔͯ͠Ͷ
    Slideshare
    GitHub
    

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71. Thank you!
    

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