init commit

app/build.gradle

@@ -5,12 +5,12 @@ plugins {
 }
 
 android {
-    compileSdkVersion 31
+    compileSdkVersion 32
 
     defaultConfig {
         applicationId "ru.otus.daggerhomework"
         minSdkVersion 23
-        targetSdkVersion 31
+        targetSdkVersion 32
         versionCode 1
         versionName "1.0"
 
@@ -35,9 +35,14 @@ android {
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation 'androidx.core:core-ktx:1.6.0'
-    implementation 'androidx.appcompat:appcompat:1.3.1'
-    implementation 'com.google.android.material:material:1.4.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    implementation 'androidx.appcompat:appcompat:1.4.2'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.0-rc02'
+    implementation 'androidx.fragment:fragment-ktx:1.4.1'
+
     implementation 'com.google.dagger:dagger:2.42'
     kapt 'com.google.dagger:dagger-compiler:2.42'
 }

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"
-    package="ru.otus.daggerhomework">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="otus.homework.dagger">
 
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
+        android:name=".App"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.DaggerHomework">
-        <activity android:name=".MainActivity">
+        android:theme="@style/Theme.Flow" >
+        <activity android:name="otus.homework.dagger.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/otus/homework/dagger/App.kt

@@ -0,0 +1,16 @@
+package otus.homework.dagger
+
+import android.app.Application
+import otus.homework.dagger.di.*
+
+class App : Application() {
+
+    lateinit var appComponent: AppComponent
+
+    override fun onCreate() {
+        super.onCreate()
+        appComponent = DaggerAppComponent
+                .factory()
+            .create(applicationContext)
+    }
+}

app/src/main/java/ru/otus/daggerhomework/ColorGenerator.kt → app/src/main/java/otus/homework/dagger/ColorGenerator.kt

@@ -1,17 +1,17 @@
-package ru.otus.daggerhomework
+package otus.homework.dagger
 
 import android.graphics.Color
 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()

app/src/main/java/ru/otus/daggerhomework/FragmentProducer.kt → app/src/main/java/otus/homework/dagger/FragmentProducer.kt

@@ -1,14 +1,22 @@
-package ru.otus.daggerhomework
+package otus.homework.dagger
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import otus.homework.dagger.di.DaggerFragmentProducerComponent
+import javax.inject.Inject
 
 class FragmentProducer : Fragment() {
 
+    @Inject
+    lateinit var viewModelFactory: VMFactoryProducer
+    private val viewModel: ViewModelProducer by viewModels { viewModelFactory }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -20,7 +28,15 @@ class FragmentProducer : Fragment() {
     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
+            viewModel.generateColor()
         }
     }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        DaggerFragmentProducerComponent
+            .factory()
+            .create((requireActivity() as MainActivity).activityComponent)
+            .inject(this)
+    }
 }

app/src/main/java/otus/homework/dagger/FragmentReceiver.kt

@@ -0,0 +1,53 @@
+package otus.homework.dagger
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.annotation.ColorInt
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import otus.homework.dagger.di.DaggerFragmentReceiverComponent
+import javax.inject.Inject
+
+class FragmentReceiver : Fragment() {
+
+    private lateinit var frame: View
+
+    @Inject
+    lateinit var viewModelFactory: VMFactoryReceiver
+    private val viewModel: ViewModelReceiver by viewModels { viewModelFactory }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_b, container, true)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        frame = view.findViewById(R.id.frame)
+        viewModel.observer.observe(viewLifecycleOwner) {
+            populateColor(it)
+            viewModel.observeColors()
+        }
+    }
+
+    private fun populateColor(@ColorInt color: Int) {
+        frame.setBackgroundColor(color)
+    }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        DaggerFragmentReceiverComponent
+            .factory()
+            .create(
+                (requireActivity().applicationContext as App).appComponent,
+                (requireActivity() as MainActivity).activityComponent
+            )
+            .inject(this)
+    }
+}

app/src/main/java/ru/otus/daggerhomework/MainActivity.kt → app/src/main/java/otus/homework/dagger/MainActivity.kt

@@ -1,11 +1,16 @@
-package ru.otus.daggerhomework
+package otus.homework.dagger
 
-import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import otus.homework.dagger.di.ActivityComponent
+import otus.homework.dagger.di.DaggerActivityComponent
 
 class MainActivity : AppCompatActivity() {
 
+    lateinit var activityComponent: ActivityComponent
+
     override fun onCreate(savedInstanceState: Bundle?) {
+        activityComponent = DaggerActivityComponent.factory().create(this)
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
     }

app/src/main/java/otus/homework/dagger/ViewModelFactories.kt

@@ -0,0 +1,38 @@
+package otus.homework.dagger
+
+import android.content.Context
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import otus.homework.dagger.di.ActivityScope
+import otus.homework.dagger.di.AppScope
+import javax.inject.Inject
+
+class VMFactoryProducer @Inject constructor(
+    private val colorGenerator: ColorGenerator,
+    @ActivityScope private val context: Context,
+    private val observer: MutableLiveData<Int>
+) : ViewModelProvider.Factory {
+
+    override fun <T : ViewModel> create(modelClass: Class<T>): T {
+        return if (modelClass.isAssignableFrom(ViewModelProducer::class.java)) {
+            ViewModelProducer(context = context, colorGenerator = colorGenerator, observer = observer) as T
+        } else {
+            throw IllegalArgumentException("ViewModel Not Found")
+        }
+    }
+}
+
+class VMFactoryReceiver @Inject constructor(
+    @AppScope private val context: Context,
+    private val observer: MutableLiveData<Int>
+) : ViewModelProvider.Factory {
+
+    override fun <T : ViewModel> create(modelClass: Class<T>): T {
+        return if (modelClass.isAssignableFrom(ViewModelReceiver::class.java)) {
+            ViewModelReceiver(context, observer = observer) as T
+        } else {
+            throw IllegalArgumentException("ViewModel Not Found")
+        }
+    }
+}

app/src/main/java/otus/homework/dagger/ViewModelProducer.kt

@@ -0,0 +1,22 @@
+package otus.homework.dagger
+
+import android.content.Context
+import android.widget.Toast
+import androidx.fragment.app.FragmentActivity
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import java.lang.RuntimeException
+import javax.inject.Inject
+
+class ViewModelProducer @Inject constructor (
+    private val colorGenerator: ColorGenerator?,
+    private val context: Context,
+    private val observer: MutableLiveData<Int>
+) : ViewModel() {
+
+    fun generateColor() {
+        if (context !is FragmentActivity) throw RuntimeException("Здесь нужен контекст активити")
+        observer.value = colorGenerator?.generateColor()
+        Toast.makeText(context, "Color sent", Toast.LENGTH_LONG).show()
+    }
+}

app/src/main/java/ru/otus/daggerhomework/ViewModelReceiver.kt → app/src/main/java/otus/homework/dagger/ViewModelReceiver.kt

@@ -1,12 +1,16 @@
-package ru.otus.daggerhomework
+package otus.homework.dagger
 
 import android.app.Application
 import android.content.Context
 import android.widget.Toast
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import javax.inject.Inject
 
-class ViewModelReceiver(
-    private val context: Context
-) {
+class ViewModelReceiver @Inject constructor(
+    private val context: Context,
+    val observer: MutableLiveData<Int>
+) : ViewModel() {
 
     fun observeColors() {
         if (context !is Application) throw RuntimeException("Здесь нужен контекст апликейшена")

app/src/main/java/otus/homework/dagger/di/ActivityComponent.kt

@@ -0,0 +1,43 @@
+package otus.homework.dagger.di
+
+import android.content.Context
+import androidx.lifecycle.MutableLiveData
+import dagger.BindsInstance
+import dagger.Component
+import dagger.Module
+import dagger.Provides
+import javax.inject.Scope
+
+@ActivityScope
+@Component(modules = [MainActivityModule::class])
+interface ActivityComponent {
+
+    @Component.Factory
+    interface Factory {
+        fun create(@BindsInstance context: Context): ActivityComponent
+    }
+
+    fun activityContext(): Context
+
+    val observer: MutableLiveData<Int>
+}
+
+@Module
+class MainActivityModule {
+
+    @Provides
+    @ActivityScope
+    fun provideColorEvent(): MutableLiveData<Int> {
+        return MutableLiveData<Int>()
+    }
+}
+
+@Module
+class ActivityModule {
+    @get:Provides
+    @ActivityScope
+    var observer = MutableLiveData<Int>()
+}
+
+@Scope
+annotation class ActivityScope

app/src/main/java/otus/homework/dagger/di/AppComponent.kt

@@ -0,0 +1,21 @@
+package otus.homework.dagger.di
+
+import android.content.Context
+import dagger.BindsInstance
+import dagger.Component
+import javax.inject.Qualifier
+
+@AppScope
+@Component
+interface AppComponent {
+    @AppScope
+    fun applicationContext(): Context
+
+    @Component.Factory
+    interface Factory {
+        fun create(@AppScope @BindsInstance appContext: Context): AppComponent
+    }
+}
+
+@Qualifier
+annotation class AppScope