first Commit

.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 'kotlin-kapt'
+}
+
+android {
+    namespace 'com.myapp.currencyapp'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.myapp.currencyapp"
+        minSdk 24
+        targetSdk 33
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildFeatures{
+        viewBinding true
+    }
+
+    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'
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.9.0'
+    implementation 'androidx.appcompat:appcompat:1.6.0'
+    implementation 'com.google.android.material:material:1.8.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.core:core-ktx:1.9.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+
+    implementation 'com.google.dagger:hilt-android:2.44.2'
+    kapt 'com.google.dagger:hilt-compiler:2.44.2'
+
+    // For instrumentation tests
+    androidTestImplementation  'com.google.dagger:hilt-android-testing:2.44.2'
+    kaptAndroidTest 'com.google.dagger:hilt-compiler:2.44.2'
+
+    // For local unit tests
+    testImplementation 'com.google.dagger:hilt-android-testing:2.44.2'
+    kaptTest 'com.google.dagger:hilt-compiler:2.44.2'
+
+    // Activity KTX for viewModels()
+    implementation "androidx.activity:activity-ktx:1.6.1"
+
+    // Architectural Components
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+
+    // Lifecycle
+    implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.5.1"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.5.1"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.5.1"
+
+    // Retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation "com.squareup.okhttp3:okhttp:4.9.0"
+
+    // Coroutines
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
+
+    // Coroutine Lifecycle Scopes
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.5.1"
+}
+kapt {
+    correctErrorTypes true
+}

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/myapp/currencyapp/ExampleInstrumentedTest.kt

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+package com.myapp.currencyapp
+
+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.myapp.currencyapp", 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"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <application
+        android:name=".CurrencyApplication"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.CurrencyApp"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <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/myapp/currencyapp/CurrencyApplication.kt

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+package com.myapp.currencyapp
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class CurrencyApplication:Application() {
+}

app/src/main/java/com/myapp/currencyapp/MainActivity.kt

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+package com.myapp.currencyapp
+
+import android.graphics.Color
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.activity.viewModels
+import androidx.core.view.isVisible
+import androidx.lifecycle.lifecycleScope
+import com.myapp.currencyapp.databinding.ActivityMainBinding
+import com.myapp.currencyapp.main.MainViewModel
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.flow.collect
+@AndroidEntryPoint
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+    private val viewModel: MainViewModel by viewModels()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        binding.btnConvert.setOnClickListener {
+            viewModel.convert(
+                binding.etFrom.text.toString(),
+                binding.spFromCurrency.selectedItem.toString(),
+                binding.spToCurrency.selectedItem.toString()
+            )
+        }
+        lifecycleScope.launchWhenStarted {
+            viewModel.conversion.collect { event ->
+                when (event) {
+                    is MainViewModel.CurrencyEvent.Success -> {
+                        binding.progressBar.isVisible = false
+                        binding.tvResult.setTextColor(Color.BLACK)
+                        binding.tvResult.text = event.resultText
+
+                    }
+                    is MainViewModel.CurrencyEvent.Failure -> {
+                        binding.progressBar.isVisible=true
+                        binding.tvResult.setTextColor(Color.RED)
+                        binding.tvResult.text = event.errorText
+
+                    }
+
+                    is MainViewModel.CurrencyEvent.Loading -> {
+                        binding.progressBar.isVisible = true
+                    }
+                    else -> Unit
+
+                }
+            }
+        }
+
+    }
+}

app/src/main/java/com/myapp/currencyapp/constants/Constants.kt

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+package com.myapp.currencyapp.constants
+
+object Constants {
+    const val BASE_URL:String = "https://api.apilayer.com/exchangerates_data"
+    const val API_KEY:String = "KZAeft0STgA8wbIVeAMKWKEBbe6K3bRP"
+
+}

app/src/main/java/com/myapp/currencyapp/data/CurrencyApi.kt

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+package com.myapp.currencyapp.data
+
+import com.myapp.currencyapp.constants.Constants.API_KEY
+import com.myapp.currencyapp.data.models.CurrencyResponse
+import retrofit2.Response
+import retrofit2.http.GET
+import retrofit2.http.Headers
+import retrofit2.http.Query
+
+interface CurrencyApi {
+    @GET("/latest")
+    @Headers("apikey",API_KEY)
+    suspend fun getRates(@Query("base") base:String ):Response<CurrencyResponse>
+
+}

app/src/main/java/com/myapp/currencyapp/data/models/CurrencyResponse.kt

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+package com.myapp.currencyapp.data.models
+
+data class CurrencyResponse(
+    val base: String,
+    val date: String,
+    val rates: Rates,
+    val success: Boolean,
+    val timestamp: Int
+)