KOINかわいいよ、KOIN

Kotlin愛好会 Vol.4 2018/09/20 #love_kotlin

Transcript

1. ©2018 Wantedly, Inc.
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   2018.9.20 -
   

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2. ©2018 Wantedly, Inc.
   Ryo Sakaguchi
   • Wantedly People
   • Android
   • Kotlin/Sake/Beer/Guitar…
   • Twitter/GitHub: @wakwak3125
   

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3. ©2018 Wantedly, Inc.
   Koin 1.0.0
   Page Title Page Subtitle
   

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4. ©2018 Wantedly, Inc.
   1. Lightweight
   2. No Proxy/No Code Generation/(No)Reflection
   3. Simple DSL
   4. Multi Platform
   • Kotlin/Java Android(with AAC ViewModel support)
   • Standalone application
   • Spark
   • Ktor
   About Koin
   

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5. ©2018 Wantedly, Inc.
   How to use?
   Let’s convert from the DI declaration of google/dagger to Koin
   

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6. ©2018 Wantedly, Inc.
   Dagger
   

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7. ©2018 Wantedly, Inc.
   google/Dagger
   @Module
   class DaggerModule {
   @Provides
   fun provideBeer(): IBeer = Beer("BREWDOG, PUNK IPA")
   @Provides
   fun provideSake(): ISake = Sake("ُઘ")
   @Provides
   fun provideGuitar(): IGuitar = Guitar("Fender, Stratocaster")
   @Provides
   @Singleton
   fun provideWakWak(beer: IBeer,
   sake: ISake,
   guitar: IGuitar): WakWak = WakWak(beer, sake, guitar)
   }
   Module
   

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8. ©2018 Wantedly, Inc.
   google/Dagger
   @Component(modules = [DaggerModule::class])
   interface AppComponent {
   fun inject(activity: MainActivity)
   }
   Component
   

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9. ©2018 Wantedly, Inc.
   google/Dagger
   class KoinDaggerApp : Application() {
   lateinit var component: AppComponent
   private set
   override fun onCreate() {
   super.onCreate()
   component = DaggerAppComponent.create()
   }
   }
   Your Application class
   

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10. ©2018 Wantedly, Inc.
    google/Dagger
    class MainActivity : AppCompatActivity() {
    @Inject
    lateinit var daggerWakWak: WakWak
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    (application as KoinDaggerApp).component.inject(this)
    text1.text = daggerWakWak.getMyFavorites()
    }
    }
    Your Activity or Fragment
    

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11. ©2018 Wantedly, Inc.
    KOIN
    

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12. ©2018 Wantedly, Inc.
    KOIN
    class KoinDaggerApp : Application() {
    override fun onCreate() {
    super.onCreate()
    startKoin(this, listOf(appModule))
    }
    private val appModule = module {
    factory { Guitar("Fender, Telecaster") as IGuitar }
    factory { Beer("αοϙϩࠇϥϕϧ") as IBeer }
    factory { Sake("ਲՆ") as ISake }
    single { WakWak(get(), get(), get()) }
    }
    }
    Your Application class
    

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13. ©2018 Wantedly, Inc.
    class KoinDaggerApp : Application() {
    override fun onCreate() {
    super.onCreate()
    startKoin(this, listOf(appModule))
    }
    private val appModule = module {
    factory { Guitar("Fender, Telecaster") as IGuitar }
    factory { Beer("αοϙϩࠇϥϕϧ") as IBeer }
    factory { Sake("ਲՆ") as ISake }
    single { WakWak(get(), get(), get()) }
    }
    }
    KOIN Your Application class
    

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14. ©2018 Wantedly, Inc.
    class MainActivity : AppCompatActivity() {
    private val koinWakWak by inject()
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    text2.text = koinWakWak.getMyFavorites()
    }
    }
    Your Activity or Fragment
    KOIN
    

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15. ©2018 Wantedly, Inc.
    More complex examples
    Sub module, Combined module, Namespace
    

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16. ©2018 Wantedly, Inc.
    class KoinDaggerApp : Application() {
    inner class Message(val message: String)
    override fun onCreate() {
    super.onCreate()
    startKoin(this, listOf(appModule))
    }
    private val appModule = module {
    module("A") { // Submodule
    factory { Beer("αοϙϩࠇϥϕϧ") }
    factory { Sake("ਲՆ") }
    factory { Guitar("Fender, Telecaster") }
    module("user") {
    single { WakWak(get(), get(), get()) }
    }
    }
    }
    KOIN Submodule
    

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17. ©2018 Wantedly, Inc.
    class KoinDaggerApp : Application() {
    inner class Message(val message: String)
    override fun onCreate() {
    super.onCreate()
    startKoin(this, listOf(messageModule, appModule))
    }
    private val messageModule = module {
    factory { Message("Hello :)") }
    }
    private val appModule = module {
    module("A") {
    ɹɹ //…
    module("user") {
    single { WakWak(get(), get(), get()) }
    }
    }
    }
    }
    KOIN Combined module
    

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18. ©2018 Wantedly, Inc.
    KOIN Namespace
    class MainActivity : AppCompatActivity() {
    private val aWakWak by inject(name = "A.user.WakWak")
    private val bWakWak by inject(name = "B.user.WakWak")
    private val hello by inject(name = "Hello.Message")
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    text1.text = aWakWak.getMyFavorites()
    text2.text = bWakWak.getMyFavorites()
    • A.user.WakWak = ModuleName.ModuleName.ClassName
    • Hello.Message = ModuleName.ClassName
    

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19. ©2018 Wantedly, Inc.
    InsertKoinIO/koin
    

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20. ©2018 Wantedly, Inc.
    ͓ΘΓ
    

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