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| 行1: |
行1: |
| − | ==サンプル==
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| − | プロジェクト直のbuild.gradleに以下追加
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| − | <pre>
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| − | buildscript {
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| − | dependencies {
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| − | classpath "com.android.tools.build:gradle:4.1.1"
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| − | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
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| − | def dagger_hilt_version = "2.31-alpha"
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| − | classpath "com.google.dagger:hilt-android-gradle-plugin:${dagger_hilt_version}"
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| − | }
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| − | }
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| − | </pre>
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| | | | |
| − | app/build.gradleに以下追加
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| − | <pre>
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| − | plugins {
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| − | id 'kotlin-kapt'
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| − | id 'dagger.hilt.android.plugin'
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| − | }
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| − | dependencies {
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| − | def dagger_hilt_version = "2.31.2-alpha"
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| − | implementation "com.google.dagger:hilt-android:${dagger_hilt_version}"
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| − | kapt "com.google.dagger:hilt-android-compiler:${dagger_hilt_version}"
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| − | def dagger_hilt_view_model_version = "1.0.0-alpha03"
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| − | implementation "androidx.hilt:hilt-lifecycle-viewmodel:${dagger_hilt_view_model_version}"
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| − | kapt "androidx.hilt:hilt-compiler:${dagger_hilt_view_model_version}"
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| − | }
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| − | </pre>
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| − |
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| − | applicationを追加
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| − |
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| − | MainApplication.kt
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| − | <pre>
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| − | import android.app.Application
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| − | import dagger.hilt.android.HiltAndroidApp
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| − |
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| − | @HiltAndroidApp
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| − | class MainApplication : Application()
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| − | </pre>
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| − |
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| − | AndoridManifest.xml のandroid:nameにpathを追加
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| − | <pre>
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| − | <?xml version="1.0" encoding="utf-8"?>
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| − | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
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| − | package="com.example.daggerhiltapplication">
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| − | <application
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| − | android:name="com.example.daggerhiltapplication.MainApplication"
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| − | </pre>
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| − |
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| − | MainActivity.kt
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| − | <pre>
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| − | import androidx.appcompat.app.AppCompatActivity
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| − | import android.os.Bundle
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| − | import dagger.hilt.android.AndroidEntryPoint
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| − | import javax.inject.Inject
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| − |
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| − | @AndroidEntryPoint
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| − | class MainActivity : AppCompatActivity() {
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| − | @Inject
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| − | lateinit var usecase: HogeUsecase
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| − | override fun onCreate(savedInstanceState: Bundle?) {
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| − | super.onCreate(savedInstanceState)
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| − | setContentView(R.layout.activity_main)
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| − |
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| − | Log.v("MainActivity", "onCreate!!")
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| − | usecase.print("MainActivity", "usecase.print!!")
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | サービスとユースケースの読み込みモジュール
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| − |
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| − | ApplicationBindsModule.kt
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| − | <pre>
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| − | import dagger.Binds
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| − | import dagger.Module
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| − | import dagger.hilt.InstallIn
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| − | import dagger.hilt.components.SingletonComponent
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| − |
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| − | @Module
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| − | @InstallIn(SingletonComponent::class)
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| − | abstract class ApplicationBindsModule {
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| − | @Binds
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| − | abstract fun bindHogeService(hogeServiceImpl: HogeServiceImpl) : HogeService
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| − | }
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| − | </pre>
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| − |
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| − | ApplicationProvidesModule.kt
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| − | <pre>
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| − | import dagger.Module
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| − | import dagger.Provides
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| − | import dagger.hilt.InstallIn
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| − | import dagger.hilt.components.SingletonComponent
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| − |
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| − | @Module
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| − | @InstallIn(SingletonComponent::class)
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| − | object ApplicationProvidesModule {
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| − | @Provides
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| − | fun provideHogeUseCase(hogeService: HogeService) : HogeUsecase {
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| − | Log.v("ApplicationProvides", "provideHogeUseCase!!")
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| − | return HogeUsecase(hogeService)
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | HogeService.kt
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| − | <pre>
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| − | import android.util.Log
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| − | import javax.inject.Inject
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| − |
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| − | interface HogeService {
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| − | fun print(tag: String, message: String)
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| − | }
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| − | class HogeServiceImpl @Inject constructor(): HogeService {
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| − | override fun print(tag: String, message: String) {
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| − | Log.v("HogeServiceImpl", "print!! tag=$tag message=$message")
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | HogeUsecase.kt
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| − | <pre>
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| − | import javax.inject.Inject
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| − |
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| − | class HogeUsecase @Inject constructor(private val service: HogeService) {
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| − | fun print(tag: String, message: String) {
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| − | Log.v("HogeUsecase", "print!! tag=$tag message=$message")
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| − | service.print(tag, message)
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | 出力
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| − | <pre>
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| − | V/ApplicationProvides: provideHogeUseCase!!
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| − | V/MainActivity: onCreate!!
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| − | V/HogeUsecase: print!! tag=MainActivity message=usecase.print!!
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| − | V/HogeServiceImpl: print!! tag=MainActivity message=usecase.print!!
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| − | </pre>
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| − |
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| − | ==MainViewModelを追加==
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| − | app/build.gradle
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| − | <pre>
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| − | dependencies {
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| − | implementation "androidx.activity:activity-ktx:1.1.0"
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| − | }
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| − | </pre>
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| − | MainViewModel.kt
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| − | <pre>
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| − | import androidx.lifecycle.SavedStateHandle
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| − | import androidx.lifecycle.ViewModel
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| − | import dagger.hilt.android.lifecycle.HiltViewModel
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| − | import javax.inject.Inject
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| − |
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| − | @HiltViewModel
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| − | class MainViewModel @Inject constructor(
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| − | private val savedState: SavedStateHandle,
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| − | private val usecase: HogeUsecase
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| − | ): ViewModel() {
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| − | fun print() {
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| − | usecase.print("MainViewModel", "print!!")
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | MainActivity.ktを改修
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| − | <pre>
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| − | import androidx.appcompat.app.AppCompatActivity
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| − | import android.os.Bundle
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| − | import android.util.Log
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| − | import androidx.activity.viewModels
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| − | import dagger.hilt.android.AndroidEntryPoint
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| − | import javax.inject.Inject
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| − |
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| − | @AndroidEntryPoint
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| − | class MainActivity : AppCompatActivity() {
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| − |
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| − | @Inject
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| − | lateinit var usecase: HogeUsecase
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| − |
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| − | private val mainViewModel: MainViewModel by viewModels()
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| − |
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| − | override fun onCreate(savedInstanceState: Bundle?) {
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| − | super.onCreate(savedInstanceState)
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| − | setContentView(R.layout.activity_main)
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| − |
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| − | Log.v("MainActivity", "onCreate!!")
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| − | usecase.print("MainActivity", "usecase.print!!")
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| − |
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| − | mainViewModel.print()
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| − |
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| − | }
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| − | }
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| − | </pre>
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| − |
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| − | 出力
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| − | <pre>
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| − | V/ApplicationProvides: provideHogeUseCase!!
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| − | V/MainActivity: onCreate!!
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| − | V/HogeUsecase: print!! tag=MainActivity message=usecase.print!!
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| − | V/HogeServiceImpl: print!! tag=MainActivity message=usecase.print!!
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| − | V/ApplicationProvides: provideHogeUseCase!!
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| − | V/HogeUsecase: print!! tag=MainViewModel message=print!!
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| − | V/HogeServiceImpl: print!! tag=MainViewModel message=print!!
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| − | </pre>
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| − |
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| − | ==参考==
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| − | https://medium.com/kaleidot725/%E8%A9%B1%E9%A1%8C%E3%81%AE-dagger-hilt-%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E3%81%BF%E3%81%9F-13acab8163e0
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