Final

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id "org.jetbrains.kotlin.kapt"
+    id 'dagger.hilt.android.plugin'
+    id 'kotlinx-serialization'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.apipaging"
+        minSdk 27
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
+        buildConfigField("String","API_KEY",API_KEY)
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        compose true
+    }
+
+    composeOptions {
+        kotlinCompilerExtensionVersion compose_version
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
+    }
+    kapt {
+        correctErrorTypes true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:1.0.5"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.activity:activity-compose:1.3.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
+
+
+    implementation "com.google.dagger:hilt-android:2.40.5"
+    kapt "com.google.dagger:hilt-android-compiler:2.38.1"
+    kapt 'androidx.hilt:hilt-compiler:1.0.0'
+    implementation 'androidx.hilt:hilt-navigation-compose:1.0.0'
+
+    // Coil
+    implementation("io.coil-kt:coil-compose:1.4.0")
+    // Compose Navigation
+    implementation("androidx.navigation:navigation-compose:2.4.0-rc01")
+
+    // Retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation("com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:0.8.0")
+
+    // KotlinX Serialization
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2"
+
+    // Room components
+    implementation "androidx.room:room-runtime:2.4.1"
+    kapt "androidx.room:room-compiler:2.4.1"
+    implementation "androidx.room:room-ktx:2.4.1"
+    implementation "androidx.room:room-paging:2.4.1"
+
+    // Paging 3.0
+    implementation 'androidx.paging:paging-compose:1.0.0-alpha14'
+
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/apipaging/ExampleInstrumentedTest.kt

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+package com.example.apipaging
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.apipaging", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.apipaging" >
+<uses-permission android:name="android.permission.INTERNET"/>
+    <application
+        android:name=".MyApplication"
+        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.ApiPaging" >
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.ApiPaging" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/apipaging/MainActivity.kt

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+package com.example.apipaging
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.navigation.compose.rememberNavController
+import androidx.paging.ExperimentalPagingApi
+import coil.annotation.ExperimentalCoilApi
+import com.example.apipaging.navigation.SetupNavGraph
+import com.example.apipaging.ui.theme.ApiPagingTheme
+import dagger.hilt.android.AndroidEntryPoint
+
+@ExperimentalCoilApi
+@ExperimentalPagingApi
+@AndroidEntryPoint
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            ApiPagingTheme {
+                // A surface container using the 'background' color from the theme
+                val navController = rememberNavController()
+                SetupNavGraph(navController = navController)
+
+            }
+        }
+    }
+}
+
+@Composable
+fun Greeting(name: String) {
+    Text(text = "Hello $name!")
+}
+
+@Preview(showBackground = true)
+@Composable
+fun DefaultPreview() {
+    ApiPagingTheme {
+        Greeting("Android")
+    }
+}

app/src/main/java/com/example/apipaging/MyApplication.kt

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+package com.example.apipaging
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class MyApplication: Application()

app/src/main/java/com/example/apipaging/data/local/UnsplashDatabase.kt

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+package com.example.apipaging.data.local
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import com.example.apipaging.data.local.dao.UnsplashImageDao
+import com.example.apipaging.data.local.dao.UnsplashRemoteKeysDao
+
+import com.example.apipaging.model.UnsplashImage
+import com.example.apipaging.model.UnsplashRemoteKeys
+
+@Database(entities = [UnsplashImage::class, UnsplashRemoteKeys::class], version = 1)
+abstract class UnsplashDatabase : RoomDatabase() {
+
+    abstract fun unsplashImageDao(): UnsplashImageDao
+    abstract fun unsplashRemoteKeysDao(): UnsplashRemoteKeysDao
+
+}

app/src/main/java/com/example/apipaging/data/local/dao/UnsplashImageDao.kt

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+package com.example.apipaging.data.local.dao
+
+import androidx.paging.PagingSource
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import com.example.apipaging.model.UnsplashImage
+
+
+@Dao
+interface UnsplashImageDao {
+
+    @Query("SELECT * FROM unsplash_image_table")
+    fun getAllImages(): PagingSource<Int, UnsplashImage>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun addImages(images: List<UnsplashImage>)
+
+    @Query("DELETE FROM unsplash_image_table")
+    suspend fun deleteAllImages()
+
+}