Выполнение всех заданий

app/build.gradle

@@ -40,4 +40,7 @@ dependencies {
     implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
     implementation 'com.google.dagger:dagger:2.42'
     kapt 'com.google.dagger:dagger-compiler:2.42'
+
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.0'
 }

app/src/main/AndroidManifest.xml

@@ -1,16 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="ru.otus.daggerhomework">
 
     <application
+        android:name=".App"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         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

@@ -1,6 +1,17 @@
 package ru.otus.daggerhomework
 
 import android.app.Application
+import ru.otus.daggerhomework.di.components.ApplicationComponent
+import ru.otus.daggerhomework.di.components.DaggerApplicationComponent
 
-class App :Application() {
+class App : Application() {
+    lateinit var appComponent: ApplicationComponent
+
+    override fun onCreate() {
+        super.onCreate()
+
+        appComponent = DaggerApplicationComponent
+            .factory()
+            .create(this)
+    }
 }

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

@@ -1,20 +1,27 @@
 package ru.otus.daggerhomework
 
 import android.graphics.Color
+import android.util.Log
 import androidx.annotation.ColorInt
-import androidx.annotation.ColorRes
 import java.util.*
+import javax.inject.Inject
 
 interface ColorGenerator {
 
     @ColorInt
     fun generateColor(): Int
 }
 
-class ColorGeneratorImpl : ColorGenerator {
+class ColorGeneratorImpl @Inject constructor() : ColorGenerator {
 
     override fun generateColor(): Int {
         val rnd = Random()
-        return Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256))
+        val color = Color.argb(
+            255,
+            rnd.nextInt(256),
+            rnd.nextInt(256),
+            rnd.nextInt(256)
+        )
+        return color
     }
 }

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

@@ -6,21 +6,56 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.launch
+import ru.otus.daggerhomework.di.components.DaggerFragmentProducerComponent
+import ru.otus.daggerhomework.di.components.FragmentProducerComponent
+import javax.inject.Inject
+import javax.inject.Provider
 
 class FragmentProducer : Fragment() {
 
+    @Inject
+    lateinit var dataKeeper: Provider<IDataKeeper>
+
+    @Inject
+    lateinit var colorGenerator: Provider<ColorGenerator>
+
+    lateinit var viewModelProducer: ViewModelProducer
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val activityComponent = (requireActivity() as MainActivity).activityComponent
+        val fragmentProducerComponent = DaggerFragmentProducerComponent
+            .builder()
+            .activityComponent(activityComponent)
+            .build()
+
+        fragmentProducerComponent.inject(this)
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        return inflater.inflate(R.layout.fragment_a, container, true)
+
+        viewModelProducer = ViewModelProducer(
+            colorGenerator.get(),
+            requireContext(),
+            dataKeeper.get()
+        )
+
+        return inflater.inflate(R.layout.fragment_a, container, false)
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         view.findViewById<Button>(R.id.button).setOnClickListener {
-            //отправить результат через livedata в другой фрагмент
+            lifecycleScope.launch {
+                //отправить результат через livedata в другой фрагмент
+                viewModelProducer.generateColor()
+            }
         }
     }
 }

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

@@ -4,28 +4,62 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Button
 import androidx.annotation.ColorInt
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
+import ru.otus.daggerhomework.di.components.DaggerFragmentReceiverComponent
+import javax.inject.Inject
+import javax.inject.Provider
+
 
 class FragmentReceiver : Fragment() {
 
+    @Inject
+    lateinit var dataKeeper: Provider<IDataKeeper>
+
     private lateinit var frame: View
+    private lateinit var viewModelReceiver: ViewModelReceiver
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val activityComponent = (requireActivity() as MainActivity).activityComponent
+        val fragmentReceiverComponent = DaggerFragmentReceiverComponent
+            .builder()
+            .activityComponent(activityComponent)
+            .build()
+        fragmentReceiverComponent.inject(this)
+    }
 
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        return inflater.inflate(R.layout.fragment_b, container, true)
+        viewModelReceiver = ViewModelReceiver(
+            requireContext().applicationContext,
+            dataKeeper.get()
+        )
+        lifecycleScope.launch {
+            viewModelReceiver.observeColors()
+        }
+
+        return inflater.inflate(R.layout.fragment_b, container, false)
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         frame = view.findViewById(R.id.frame)
+
+        lifecycleScope.launch {
+            viewModelReceiver.colorData.collect { colorCode ->
+                populateColor(colorCode)
+            }
+        }
     }
 
-    fun populateColor(@ColorInt color: Int) {
+    private fun populateColor(@ColorInt color: Int) {
         frame.setBackgroundColor(color)
     }
 }

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

@@ -0,0 +1,28 @@
+package ru.otus.daggerhomework
+
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import ru.otus.daggerhomework.di.ActivityScope
+import javax.inject.Inject
+
+interface IDataKeeper {
+
+    suspend fun saveData(newData: Int)
+
+    fun getFlow(): StateFlow<Int>
+}
+
+class DataKeeper @Inject constructor() : IDataKeeper {
+
+    private val _colorData = MutableStateFlow<Int>(0)
+    private val colorData: StateFlow<Int> = _colorData
+
+    override suspend fun saveData(newData: Int) {
+        _colorData.emit(newData)
+    }
+
+    override fun getFlow(): StateFlow<Int> {
+        return colorData
+    }
+
+}

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

@@ -1,12 +1,36 @@
 package ru.otus.daggerhomework
 
-import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentContainerView
+import ru.otus.daggerhomework.di.components.ActivityComponent
+import ru.otus.daggerhomework.di.components.DaggerActivityComponent
+import javax.inject.Inject
+import javax.inject.Provider
 
 class MainActivity : AppCompatActivity() {
 
+    lateinit var activityComponent: ActivityComponent
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
+        val appComponent = (application as App).appComponent
+        activityComponent = DaggerActivityComponent
+            .factory()
+            .create(
+                appComponent,
+                this
+            )
+
         setContentView(R.layout.activity_main)
+
+        supportFragmentManager
+            .beginTransaction()
+            .add(R.id.fragmentContainer, FragmentReceiver())
+            .add(R.id.fragmentContainer, FragmentProducer())
+            .commit()
     }
-}
+}
+

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

@@ -1,16 +1,19 @@
 package ru.otus.daggerhomework
 
 import android.content.Context
+import android.util.Log
 import android.widget.Toast
 import androidx.fragment.app.FragmentActivity
 
 class ViewModelProducer(
     private val colorGenerator: ColorGenerator,
-    private val context: Context
+    private val context: Context,
+    private val dataKeeper: IDataKeeper
 ) {
-
-    fun generateColor() {
+    suspend fun generateColor() {
         if (context !is FragmentActivity) throw RuntimeException("Здесь нужен контекст активити")
         Toast.makeText(context, "Color sent", Toast.LENGTH_LONG).show()
+
+        dataKeeper.saveData(colorGenerator.generateColor())
     }
 }

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

@@ -3,13 +3,25 @@ package ru.otus.daggerhomework
 import android.app.Application
 import android.content.Context
 import android.widget.Toast
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.collect
 
 class ViewModelReceiver(
-    private val context: Context
+    private val context: Context,
+    dataKeeper: IDataKeeper
 ) {
+    private val _colorData = MutableStateFlow<Int>(0)
+    val colorData: StateFlow<Int> = _colorData
 
-    fun observeColors() {
+    private val colorFlow = dataKeeper.getFlow()
+
+    suspend fun observeColors() {
         if (context !is Application) throw RuntimeException("Здесь нужен контекст апликейшена")
-        Toast.makeText(context, "Color received", Toast.LENGTH_LONG).show()
+        colorFlow.collect { colorCode ->
+            Toast.makeText(context, "Color received", Toast.LENGTH_LONG).show()
+
+            _colorData.emit(colorCode)
+        }
     }
 }

app/src/main/java/ru/otus/daggerhomework/di/Qualifiers.kt

@@ -0,0 +1,9 @@
+package ru.otus.daggerhomework.di
+
+import javax.inject.Qualifier
+
+@Qualifier
+annotation class ApplicationContext
+
+@Qualifier
+annotation class ActivityContext

app/src/main/java/ru/otus/daggerhomework/di/Scopes.kt

@@ -0,0 +1,12 @@
+package ru.otus.daggerhomework.di
+
+import javax.inject.Scope
+
+@Scope
+annotation class ApplicationScope
+
+@Scope
+annotation class ActivityScope
+
+@Scope
+annotation class FragmentScope