DroidKaigi2019 Day 01 11:20~ 「マルチモジュールプロジェクトでの Dagger2を用いた Dependency Injection」 での発表資料です
サンプルコード https://github.com/kgmyshin/Multi-Module-Project-With-Dagger
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X© DMM.comᶃ.PEVMFΛ༻ҙ͢Δ@Moduleinternal abstract class CounterModule {@Singleton@Bindsabstract fun provideCounter(impl: CounterImpl): Counter}@Moduleinternal abstract class GreetingModule {@Bindsabstract fun provideGreeter(impl: GreeterImpl): Greeter}
X© DMM.comᶄ'SBHNFOU.PEVMFΛ༻ҙ͢Δ@Moduleinternal abstract class GreetingFragmentModule {@ContributesAndroidInjectorabstract fun greetingFragment(): GreetingFragment}@Moduleinternal abstract class CounterFragmentModule {@ContributesAndroidInjectorabstract fun counterFragment(): CounterFragment}
X© DMM.comᶅ*OKFDUPSΛ༻ҙ͢Δclass CounterInjector : HasDispatchingInjector {@Injectlateinit var supportFragmentInjector: DispatchingAndroidInjectoroverride fun dispatchingAndroidInjector(): DispatchingAndroidInjector =supportFragmentInjector}class GreetingInjector : HasDispatchingInjector {@Injectlateinit var supportFragmentInjector: DispatchingAndroidInjectoroverride fun dispatchingAndroidInjector(): DispatchingAndroidInjector =supportFragmentInjector}
X© DMM.comᶆ$PNQPOFOUΛ༻ҙ͢Δ@Singleton@Component(modules = [AndroidInjectionModule::class,CounterModule::class,CounterFragmentModule::class])interface CounterComponent : AndroidInjector@Singleton@Component(modules = [AndroidInjectionModule::class,GreetingModule::class,GreetingFragmentModule::class])interface GreetingComponent : AndroidInjector
X© DMM.comᶇ"QQMJDBUJPOPO$SFBUFͰ$PNQPOFOUΛॳظԽ͢Δclass Application : android.app.Application(), HasSupportFragmentInjector {private val fragmentInjector = ModuleInjector()override fun supportFragmentInjector(): AndroidInjector = fragmentInjectoroverride fun onCreate() {super.onCreate()val counterInjector = CounterInjector()DaggerCounterComponent.create().inject(counterInjector)val greetingInjector = GreetingInjector()DaggerGreetingComponent.create().inject(greetingInjector)fragmentInjector.addInjector(counterInjector)fragmentInjector.addInjector(greetingInjector)}}
X© DMM.comclass Application : android.app.Application(), HasSupportFragmentInjector {private val fragmentInjector = ModuleInjector()override fun supportFragmentInjector(): AndroidInjector = fragmentInjectoroverride fun onCreate() {super.onCreate()val counterInjector = CounterInjector()DaggerCounterComponent.create().inject(counterInjector)val greetingInjector = GreetingInjector()DaggerGreetingComponent.create().inject(greetingInjector)fragmentInjector.addInjector(counterInjector)fragmentInjector.addInjector(greetingInjector)}}ᶇ"QQMJDBUJPOPO$SFBUFͰ$PNQPOFOUΛॳظԽ͢Δ
X© DMM.comᶈ֤ॴͰ*OKFDUclass CounterFragment : Fragment() {@Injectlateinit var counter: Counteroverride fun onAttach(context: Context?) {AndroidSupportInjection.inject(this)super.onAttach(context)}…}class GreetingFragment : Fragment() {@Injectlateinit var greeter: Greeteroverride fun onAttach(context: Context?) {AndroidSupportInjection.inject(this)super.onAttach(context)}…}
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X© DMM.comྲྀΕclass Application :…, HasSupportFragmentInjector {private val moduleFragmentInjector…}
X© DMM.comྲྀΕclass Application :…, HasSupportFragmentInjector {private val moduleFragmentInjector…}class CounterFragment : Fragment() {ɹɹ…AndroidSupportInjection.inject(this)…}
X© DMM.comྲྀΕclass Application :…, HasSupportFragmentInjector {private val moduleFragmentInjector…}class CounterFragment : Fragment() {ɹɹ…AndroidSupportInjection.inject(this)…}class MainActivity : AppCompatActivity() {…}HasSupportFragmentInjectorΛ࣮ͯ͠Δ͔ʁ
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X© DMM.comͨͱ͑ɺ͜ΜͳؔΛ࡞Δobject GreetingInjection {fun inject(fragment: Fragment) {val application = fragment.requireActivity().application as Applicationif (application.moduleFragmentInjector.injectors().all { it !is GreetingInjector }) {val injector = GreetingInjector()val component =DaggerGreetingComponent.builder().counter(application.counterComponent().counter()).build()component.inject(injector)application.addFragmentInjector(injector)}AndroidSupportInjection.inject(fragment)}}
X© DMM.comͨͱ͑ɺ͜ΜͳؔΛ࡞Δobject GreetingInjection {fun inject(fragment: Fragment) {val application = fragment.requireActivity().application as Applicationif (application.moduleFragmentInjector.injectors().all { it !is GreetingInjector }) {val injector = GreetingInjector()val component =DaggerGreetingComponent.builder().counter(application.counterComponent().counter()).build()component.inject(injector)application.addFragmentInjector(injector)}AndroidSupportInjection.inject(fragment)}} "DUJWJUZʹNPEVMF*OKFDUPS͕͋Δ߹Λߟྀͯ͠ɺ"OESPJE4VQQPSU*OKFDUJPOͱಉ͡Α͏ͳ࣮ʹ͢ΔͷՄ
X© DMM.comͨͱ͑ɺ͜ΜͳؔΛ࡞Δobject GreetingInjection {fun inject(fragment: Fragment) {val application = fragment.requireActivity().application as Applicationif (application.moduleFragmentInjector.injectors().all { it !is GreetingInjector }) {val injector = GreetingInjector()val component =DaggerGreetingComponent.builder().counter(application.counterComponent().counter()).build()component.inject(injector)application.addFragmentInjector(injector)}AndroidSupportInjection.inject(fragment)}} ˞"DUJWJUZͰ*OKFDUPSΛ࣋ͭͱ͖͜ͷํ๏ͩͱ͏·͍͔͘ͳ͍ͷͰ݅ذ͢Δඞཁ͕͋Γ·͢ʂ
X© DMM.comͦ͏͢ΔͱɺJOKFDUઌ͜ͷมߋ͚ͩͰࠓ·Ͱ௨Γಈ͘Α͏ʹͳΔclass GreetingFragment : Fragment() {@Injectlateinit var greeter: Greeteroverride fun onAttach(context: Context?) {GreetingInjection.inject(this)super.onAttach(context)}…}class GreetingFragment : Fragment() {@Injectlateinit var greeter: Greeteroverride fun onAttach(context: Context?) {AndroidSupportInjection.inject(this)super.onAttach(context)}…}
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