Kotlin Multiplatform

Transcript

1. Kotlin Multiplatform

2. @allymcleangames

3. Hello

4. • Kevin Galligan, President of Touchlab • I’ve been coding

   Android since before the G1, run a mobile dev shop, and since late 2015 have been largely focused on mobile code sharing • I’m going to tell you about Kotlin Multiplatform
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6. Kotlin?

7. • Static “Better Java” by Jetbrains • 2011 - Announced

   • 2016 - v1.0 • 2017 - Google++
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9. JVM JS Native

10. JVM JS Native Common

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12. Native

13. Native Not Native

14. Native Not Native - Me(h)tal Not Native - Rock

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16. –Lemmy Kilmister “It’s Little Richard’s fault, all of it. Little

    Richard is directly responsible for Motorhead.”
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27. • Shared, testable architecture (not UI) • Smooth interop, optional

    code sharing • Active community • Good tools • Bonus! One platform 100% native K O T L I N M U L T I P L A T F O R M
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31. I Can’t See The Future

32. safe bets

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36. JVM JS Native Common

37. JVM JS Native Common

38. JVM Native Common

39. JVM Native Common Android Stuff Framework iOS Stuff

40. Common

41. Common mainThread?

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49. Typealias

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52. Expected a method, was actually there!

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62. Status

63. Kotlin/Native at .9

64. Tooling

65. Speed

66. Libraries

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81. • 5 React Native • 3 Flutter • 4 Kotlin

    Multiplatform • ~20% of the content! Cross Platform Droidcon

82. • Serialization • Ktor • I/O • Coroutines Jetbrains

83. Threads

84. State

85. all the code you’ve ever written not frozen frozen

86. all the code you’ve ever written not frozen frozen

87. Frozen is • A special runtime state • Like super-immutable

    • Only way to share data between threads

88. Data OtherMutable OtherShared Stuff MoreStuff

89. Data OtherMutable OtherShared Stuff MoreStuff

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97. It works!

98. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

    v0.8 v0.8.2

99. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

    v0.8 v0.8.2 v0.9 Coroutines (and other libs)

100. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

     v0.8 v0.8.2 v0.9 Coroutines (and other libs)

101. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

     v0.8 v0.8.2 v0.9 Coroutines (and other libs)

102. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

     v0.8 v0.8.2 v0.9 Coroutines (and other libs) v1

103. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

     v0.8 v0.8.2 v0.9 Coroutines (and other libs) v1 Major reactive lib Date/other libs Improved tooling Faster builds

104. Q3 Q2 Q4 Q1 Q2 2018 2019 0 .6 v0.7

     v0.8 v0.8.2 v0.9 Coroutines (and other libs) v1 Major reactive lib Date/other libs Improved tooling Faster builds “Mainstream” Big apps Wasm threads

105. 2010 ORMLite ActiveAndroid

106. 2010 ORMLite ActiveAndroid :P

107. 2010 ORMLite ActiveAndroid :P 2018 ORMLite SQLBright SQLDelight Storeio Room

     Cupboard SugarORM GreenDAO DBFlow Squeeky Ollie Requery Squidb

108. 2018 Knarch.db SQLDelight 2025? MPSettings Jetbrains stuff

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110. kevin@touchlab.co @kpgalligan

111. kevin@touchlab.co @kpgalligan Discount code: AndroidSummit