1. Реализовать ApplicationComponent и связать с FragmentProducerComponent и FragmentReceiverComponent для передачи ApplicationContext

Author: GeorgeBozon

app/src/main/AndroidManifest.xml

@@ -10,7 +10,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.DaggerHomework">
-        <activity android:name=".MainActivity">
+        <activity android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/ru/otus/daggerhomework/App.kt

@@ -3,4 +3,14 @@ package ru.otus.daggerhomework
 import android.app.Application
 
 class App :Application() {
+    lateinit var appCompoment: ApplicationComponent
+    override fun onCreate() {
+        super.onCreate()
+        appCompoment = DaggerApplicationComponent.factory().newAppComponent(applicationContext)
+    }
+
+}
+
+fun Application.asApp(): App {
+    return this as App
 }

app/src/main/java/ru/otus/daggerhomework/ApplicationComponent.kt

@@ -1,4 +1,22 @@
 package ru.otus.daggerhomework
 
+import android.content.Context
+import dagger.BindsInstance
+import dagger.Component
+import javax.inject.Qualifier
+
+@Component
 interface ApplicationComponent {
-}
+
+   @ApplicationContext
+   fun provideContext(): Context
+
+   @Component.Factory
+   interface Factory{
+
+      fun newAppComponent(@ApplicationContext @BindsInstance context: Context): ApplicationComponent
+   }
+}
+
+@Qualifier
+annotation class ApplicationContext

app/src/main/java/ru/otus/daggerhomework/FragmentProducerComponent.kt

@@ -0,0 +1,19 @@
+package ru.otus.daggerhomework
+
+import dagger.Component
+import javax.inject.Singleton
+
+@Singleton
+@Component(
+    modules = [FragmentProducerModule::class],
+    dependencies = [ApplicationComponent::class]
+)
+interface FragmentProducerComponent {
+
+    companion object {
+        fun getFragmentProducerComponent(applicationComponent: ApplicationComponent): FragmentProducerComponent {
+            return DaggerFragmentProducerComponent.builder()
+                .applicationComponent(applicationComponent).build()
+        }
+    }
+}

app/src/main/java/ru/otus/daggerhomework/FragmentProducerModule.kt

@@ -0,0 +1,17 @@
+package ru.otus.daggerhomework
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+
+@Module
+interface FragmentProducerModule {
+    companion object{
+
+        @Provides
+        fun provideContext(@ApplicationContext context: Context): Context{
+            return context
+        }
+
+    }
+}

app/src/main/java/ru/otus/daggerhomework/FragmentReceiverComponent.kt

@@ -0,0 +1,17 @@
+package ru.otus.daggerhomework
+
+import dagger.Component
+
+@Component(
+    modules = [FragmentReceiverModule::class],
+    dependencies = [ApplicationComponent::class]
+)
+interface FragmentReceiverComponent {
+
+    companion object {
+        fun getFragmentReceiverComponent(applicationComponent: ApplicationComponent): FragmentReceiverComponent {
+            return DaggerFragmentReceiverComponent.builder()
+                .applicationComponent(applicationComponent).build()
+        }
+    }
+}

app/src/main/java/ru/otus/daggerhomework/FragmentReceiverModule.kt

@@ -0,0 +1,17 @@
+package ru.otus.daggerhomework
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+
+@Module
+interface FragmentReceiverModule {
+    companion object{
+
+        @Provides
+        fun provideContext(@ApplicationContext context: Context): Context{
+            return context
+        }
+
+    }
+}

app/src/main/java/ru/otus/daggerhomework/ViewModelReceiver.kt

@@ -3,8 +3,9 @@ package ru.otus.daggerhomework
 import android.app.Application
 import android.content.Context
 import android.widget.Toast
+import javax.inject.Inject
 
-class ViewModelReceiver(
+class ViewModelReceiver @Inject constructor(
     private val context: Context
 ) {