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Kotlin in Google I/O 2017 2017.05.25 APP DOJO @satorufujiwara

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About me Satoru Fujiwara (@satorufujiwara) Android Engineer @CyberAgent ,Inc Shibuya.apk

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Kotlin & Me FRESH! (KotlinͰ։ൃ 2015೥3݄ʙ) 2016೥ɺKotlinͰAndroid։ൃ͢Δํ΁ @Qiita - goo.gl/0medax CA.kt #1 6/15(໦)

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Google Keynote

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Kotlin in Keynote • KotlinΛAndroidʹ͓͚Δެࣜݴޠͱͯ͠αϙʔτ • JetBrainsࣾΛύʔτʔφʔͱͯ͠Kotlinࡒஂͷઃཱ • طଘͷίʔυ(Java)ʹ΋͞ΒͳΔ౤ࢿΛ͢Δ

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Why Kotlin? • Kotlin͸Androidͷ։ൃऀίϛϡχςΟ͕طʹٻΊ͍ͯ ͨݴޠͰɺ։ൃऀͷੜ࢈ੑΛߴΊΔ͜ͱ͕ग़དྷΔ • AndroidͷϥϯλΠϜͱͷ׬શͳޓ׵ੑ͕͋Γɺطଘͷ ίʔυͱͷ૬ޓӡ༻͕ՄೳͰ͋Δ • ૉ੖Β͍͠IDEʹΑΔαϙʔτ • ݴޠ͕੒ख़͠ɺ੡඼൛ͱͯ͠ϦϦʔεՄೳͳঢ়ଶͰ͋Δ

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Developer Keynote

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4 big themes in Android • Kotlin • Android Studio & Libraries • App Quality & Success • Android Instant App

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Kotlin in Developer Keynote • First-class Language ʹ • γϯλοΫεϊΠζͷগͳ͍ඒ͍͠ݴޠ • Android Studio 3.0 ʹ૊Έࠐ·ΕΔ • Java8 ͷ͞ΒͳΔαϙʔτ(Android O)

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Android Studio 3.0

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buid.gradle buildscript { ext.kotlin_version = '1.1.2-4' dependencies { classpath 'com.android.tools.build:gradle:3.0.0-alpha1' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } app/build.gradle apply plugin: ‘kotlin-android' dependencies { compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version" }

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Why Kotlin? in Developer Keynote • Kotlin͸Javaͱͷ׬શͳ૬ޓӡ༻͕ग़དྷɺ1Ϋϥε͔ΒKotlinԽͰ͖Δ • ։ൃ͔Β5೥ܦͪɺݴޠ͕੒ख़͠ɺ੡඼൛ͱͯ͠ϦϦʔεՄೳͳঢ়ଶ Ͱ͋Γɺ࣮ࡍʹ࢖ΘΕ͍ͯΔ • Flipboard,Pinterest ,Square Cash, Expedia • ݴޠ͕ૉ੖Β͍͠ͷʹՃ͑ɺIDEαϙʔτ͕ૉ੖Β͍͠ • Android Studioͷϕʔεͱͳ͍ͬͯΔIntelliJͱಉ͡νʔϜ • Kotlin͸طʹApache2ϥΠηϯεͷΦʔϓϯιʔε͕ͩɺ͜Ε͔Β΋ ΦʔϓϯιʔεϓϩδΣΫτͱͯ͠ඇӦརࡒஂ͕։ൃ͍ͯ͘͠

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Sessions about Kotlin • Introduction to Kotlin • Life is Great and Everything Will Be Ok, Kotlin is Here

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Introduction to Kotlin Google I/O 2017 : Introduction to Kotlin (࿨༁/ཁ໿) @Qiita goo.gl/U24xkw

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Life is Great and Everything Will Be Ok, Kotlin is Here • KotlinͰAndroidΛ։ൃ͢Δ্ͰͷTips • by Jake Wharton (Square) @JakeWharton • KotlinΛ͍͔ʹͯ͠ಋೖ͔ͨ͠ʁ • by Christina Lee (Pinterest) @RunChristinaRun • https://speakerdeck.com/jakewharton/life-is-great-and- everything-will-be-ok-kotlin-is-here-google-io-2017 • https://www.youtube.com/watch?v=fPzxfeDJDzY

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Kotlin͕ެࣜݴޠʹͳͬͯ • Android։ൃͰʮKotlinΛબͿ͜ͱʯ͕ग़དྷΔ • Ҿ͖ଓ͖Javaͷ஌ࣝ͸ඞཁ • Swiftͱ͸ࣅͯඇͳΔݴޠɺڞ௨Խ͸ग़དྷͳ͍ • Kotlin͸ࣗ༝౓͕ߴ͘ɺ͜Ε·ͰҎ্ʹֶशɾ νʔϜͰͷٞ࿦͕ඞཁ

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How to start Kotlin • Official Site : kotl.in/ , kotl.in/android • Kotlin is awesome! (kotlin.link/) • Kotlin ελʔτϒοΫ(ஶ:௕ᖒଠ࿠) • Kotlin Advent Calendar (2015/2016)

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Thank you ! Let’s enjoy Kotlin