.gitignore

+*.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

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/.name

+My Application
\ No newline at end of file

.idea/compiler.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file

.idea/gradle.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/drawable/recipe_item_background.xml" value="0.2265" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/drawable/step_background.xml" value="0.124" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/activity_cook_mode.xml" value="0.11302083333333333" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/activity_cooking_mode.xml" value="0.2" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/activity_main.xml" value="0.2" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/activity_recipe_detail.xml" value="0.264" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/activity_settings.xml" value="0.2" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/dialog_add_recipe.xml" value="0.2" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/fragment_cook_mode.xml" value="0.11302083333333333" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/fragment_dashboard.xml" value="0.2269021739130435" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/fragment_home.xml" value="0.264" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/item_recipe.xml" value="0.5117466802860061" />
+        <entry key="..\:/Studium/MobileComputing/MyApplication/app/src/main/res/layout/recipe_list_item.xml" value="0.4" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="Android Studio default JDK" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file

app/.gitignore

+/build
\ No newline at end of file

app/build.gradle

+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.myapplication"
+        minSdk 21
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    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 {
+        viewBinding true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.4.1'
+    implementation 'com.google.android.material:material:1.6.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.5'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation "androidx.recyclerview:recyclerview:1.2.1"
+    implementation 'androidx.preference:preference:1.1.1'
+
+}
\ No newline at end of file

app/proguard-rules.pro

+# 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
\ No newline at end of file

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

+package com.example.myapplication
+
+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.myapplication", appContext.packageName)
+    }
+}
\ No newline at end of file

app/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.myapplication">
+
+    <application
+        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.myapplication">
+
+        <activity android:name=".SettingsActivity" />
+        <activity
+            android:name="com.example.myapplication.MainActivity"
+            android:exported="true"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".RecipeDetailActivity" />
+        <activity android:name="com.example.myapplication.CookingModeActivity" />
+
+    </application>
+
+</manifest>
\ No newline at end of file

app/src/main/java/com/example/myapplication/AddRecipeDialogFragment.kt

+package com.example.myapplication
+
+import android.app.Dialog
+import android.os.Bundle
+import android.widget.Button
+import android.widget.EditText
+import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+
+class AddRecipeDialogFragment(
+    private val onRecipeAdded: (Recipe) -> Unit // Callback für das Hinzufügen eines Rezepts
+) : DialogFragment() {
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        // Dialog-Builder initialisieren
+        val builder = AlertDialog.Builder(requireContext())
+
+        // Dialog-Layout inflaten
+        val dialogView = requireActivity().layoutInflater.inflate(R.layout.dialog_add_recipe, null)
+
+        // UI-Elemente aus dem Layout referenzieren
+        val nameEditText = dialogView.findViewById<EditText>(R.id.recipeNameInput)
+        val ingredientsEditText = dialogView.findViewById<EditText>(R.id.recipeIngredientsInput)
+        val instructionsEditText = dialogView.findViewById<EditText>(R.id.recipeInstructionsInput)
+        val addButton = dialogView.findViewById<Button>(R.id.saveRecipeButton)
+
+        // Dialog-Layout setzen
+        builder.setView(dialogView)
+        val dialog = builder.create()
+
+        // Hinzufügen-Button Logik
+        addButton.setOnClickListener {
+            val name = nameEditText.text.toString().trim()
+            val ingredients = ingredientsEditText.text.toString().trim()
+            val instructions = instructionsEditText.text.toString().trim()
+
+            // Schritte aus den Anweisungen extrahieren
+            val steps = instructions.split(",").map { it.trim() }.filter { it.isNotEmpty() }
+
+            if (name.isNotEmpty() && ingredients.isNotEmpty() && instructions.isNotEmpty()) {
+                // Neues Rezept erstellen und übergeben
+                val newRecipe = Recipe(name, ingredients, instructions, steps)
+                onRecipeAdded(newRecipe)
+                dialog.dismiss()
+
+                // Erfolgsmeldung
+                Toast.makeText(requireContext(), "Rezept wurde erfolgreich gespeichert!", Toast.LENGTH_SHORT).show()
+            } else {
+                // Fehlerhinweis, wenn nicht alle Felder ausgefüllt wurden
+                Toast.makeText(requireContext(), "Bitte füllen Sie alle Felder aus", Toast.LENGTH_SHORT).show()
+            }
+        }
+
+        return dialog
+    }
+}

app/src/main/java/com/example/myapplication/CookingModeActivity.kt

+package com.example.myapplication
+
+import android.os.Bundle
+import android.os.CountDownTimer
+import android.widget.Button
+import android.widget.TextView
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+
+class CookingModeActivity : AppCompatActivity() {
+
+    private var currentStepIndex = 0
+    private var timer: CountDownTimer? = null
+    private var remainingTime: Long = 60_000 // Standardzeit pro Schritt: 1 Minute
+    private var isPaused = true
+    private lateinit var steps: List<String> // Liste der Schritte für das Rezept
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Theme basierend auf Einstellungen setzen
+        val preferences = getSharedPreferences("appSettings", MODE_PRIVATE)
+        val savedColorOption = preferences.getInt("colorOption", 1)
+        setTheme(if (savedColorOption == 1) R.style.Theme_myapplication else R.style.Theme_MyApp_BlueTheme)
+
+        setContentView(R.layout.activity_cooking_mode)
+
+        // Rezept und Schritte aus Intent abrufen
+        val recipe = intent.getParcelableExtra<Recipe>("RECIPE")
+        steps = recipe?.steps ?: emptyList()
+
+        // UI-Elemente initialisieren
+        val currentStepText = findViewById<TextView>(R.id.currentStepText)
+        val timerText = findViewById<TextView>(R.id.timerText)
+        val startPauseButton = findViewById<Button>(R.id.startPauseButton)
+        val nextStepButton = findViewById<Button>(R.id.nextStepButton)
+
+        // Button-Text basierend auf dem Timer-Zustand setzen
+        startPauseButton.text = if (isPaused) "Pause" else "Start"
+
+        // UI initialisieren
+        updateUI(currentStepText, timerText, startPauseButton, nextStepButton)
+
+        // Start/Pause-Button Logik
+        startPauseButton.setOnClickListener {
+            if (isPaused) {
+                startTimer(timerText)
+                startPauseButton.text = "Pause"
+                Toast.makeText(this, "Zeit läuft weiter", Toast.LENGTH_SHORT).show()
+            } else {
+                pauseTimer()
+                startPauseButton.text = "Start"
+                Toast.makeText(this, "Zeit angehalten", Toast.LENGTH_SHORT).show()
+            }
+        }
+
+        // Nächster Schritt-Button Logik
+        nextStepButton.setOnClickListener {
+            pauseTimer()
+            currentStepIndex++
+            updateUI(currentStepText, timerText, startPauseButton, nextStepButton)
+            startPauseButton.text = "Pause"
+        }
+    }
+
+    private fun startTimer(timerText: TextView) {
+        timer?.cancel() // Vorherigen Timer abbrechen
+        timer = object : CountDownTimer(remainingTime, 1_000) {
+            override fun onTick(millisUntilFinished: Long) {
+                remainingTime = millisUntilFinished
+                val minutes = millisUntilFinished / 60_000
+                val seconds = (millisUntilFinished / 1_000) % 60
+                timerText.text = String.format("%02d:%02d", minutes, seconds)
+            }
+
+            override fun onFinish() {
+                currentStepIndex++
+                updateUI(
+                    findViewById(R.id.currentStepText),
+                    findViewById(R.id.timerText),
+                    findViewById(R.id.startPauseButton),
+                    findViewById(R.id.nextStepButton)
+                )
+            }
+        }.start()
+        isPaused = false
+    }
+
+    private fun pauseTimer() {
+        timer?.cancel()
+        isPaused = true
+    }
+
+    private fun updateUI(
+        currentStepText: TextView,
+        timerText: TextView,
+        startPauseButton: Button,
+        nextStepButton: Button
+    ) {
+        if (currentStepIndex < steps.size) {
+            currentStepText.text = steps[currentStepIndex]
+            remainingTime = 60_000
+            startTimer(timerText)
+        } else {
+            // Alle Schritte abgeschlossen
+            currentStepText.text = "Alle Schritte abgeschlossen!"
+            timer?.cancel()
+            startPauseButton.isEnabled = false
+            nextStepButton.isEnabled = false
+            timerText.text = "00:00"
+        }
+    }
+}
\ No newline at end of file

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

+package com.example.myapplication
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.ImageButton
+import androidx.appcompat.app.AppCompatActivity
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+
+class MainActivity : AppCompatActivity() {
+    private val recipes = mutableListOf<Recipe>() // Rezeptliste
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Theme basierend auf Einstellungen setzen
+        val preferences = getSharedPreferences("appSettings", MODE_PRIVATE)
+        val savedColorOption = preferences.getInt("colorOption", 1)
+        setTheme(if (savedColorOption == 1) R.style.Theme_myapplication else R.style.Theme_MyApp_BlueTheme)
+
+        setContentView(R.layout.activity_main)
+
+        // RecyclerView und FloatingActionButton initialisieren
+        val recyclerView = findViewById<RecyclerView>(R.id.recipeRecyclerView)
+        val addButton = findViewById<FloatingActionButton>(R.id.addRecipeButton)
+
+        // Dummy-Rezepte hinzufügen
+        recipes.addAll(
+            listOf(
+                Recipe("Tomatensuppe", "Tomaten, Salz, Pfeffer", "Tomaten kochen und würzen", listOf("Tomaten klein schneiden", "Mit Wasser in einem Topf kochen", "Mit Salz und Pfeffer würzen"), "android.resource://com.example.myapplication/drawable/tomatensuppe"),
+                Recipe("Spaghetti Bolognese", "Spaghetti, Hackfleisch, Tomatensoße", "Spaghetti kochen und Hackfleisch anbraten", listOf("Spaghetti in Salzwasser kochen", "Hackfleisch in einer Pfanne anbraten", "Tomatensauce hinzufügen und würzen"), "android.resource://com.example.myapplication/drawable/spaghetti"),
+                Recipe("Pancakes", "Mehl, Milch, Eier", "Alles verrühren und braten", listOf("Alle Zutaten in einer Schüssel verrühren", "In einer Pfanne Butter schmelzen", "Teig in die Pfanne gießen und 5 min ausbacken"), "android.resource://com.example.myapplication/drawable/pancakes")
+            )
+        )
+
+        recyclerView.layoutManager = LinearLayoutManager(this)
+        recyclerView.adapter = RecipeAdapter(recipes) { recipe ->
+            val intent = Intent(this, RecipeDetailActivity::class.java)
+            intent.putExtra("RECIPE", recipe)
+            startActivity(intent)
+        }
+
+        addButton.setOnClickListener {
+            AddRecipeDialogFragment { newRecipe ->
+                recipes.add(newRecipe)
+                recyclerView.adapter?.notifyItemInserted(recipes.size - 1)
+            }.show(supportFragmentManager, "AddRecipeDialogFragment")
+        }
+
+        findViewById<ImageButton>(R.id.settingsButton).setOnClickListener {
+            startActivity(Intent(this, SettingsActivity::class.java))
+        }
+    }
+}
\ No newline at end of file

app/src/main/java/com/example/myapplication/Recipe.kt

+package com.example.myapplication
+
+import android.os.Parcel
+import android.os.Parcelable
+
+data class Recipe(
+    val name: String,
+    val ingredients: String,
+    val instructions: String,
+    val steps: List<String>,
+    val imageUri: String? = null
+) : Parcelable {
+    constructor(parcel: Parcel) : this(
+        parcel.readString() ?: "",
+        parcel.readString() ?: "",
+        parcel.readString() ?: "",
+        parcel.createStringArrayList() ?: listOf(),
+        parcel.readString(),
+    )
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeString(name)
+        parcel.writeString(ingredients)
+        parcel.writeString(instructions)
+        parcel.writeStringList(steps)
+        parcel.writeString(imageUri)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<Recipe> {
+        override fun createFromParcel(parcel: Parcel): Recipe {
+            return Recipe(parcel)
+        }
+
+        override fun newArray(size: Int): Array<Recipe?> {
+            return arrayOfNulls(size)
+        }
+    }
+}
+

app/src/main/java/com/example/myapplication/RecipeAdapter.kt

+package com.example.myapplication
+
+import android.net.Uri
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+
+class RecipeAdapter(
+    private val recipes: List<Recipe>, // Liste der Rezepte
+    private val onRecipeClick: (Recipe) -> Unit // Callback für Klick auf ein Rezept
+) : RecyclerView.Adapter<RecipeAdapter.ViewHolder>() {
+
+    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        fun bind(recipe: Recipe) {
+            val title = itemView.findViewById<TextView>(R.id.recipeTitle)
+            val image = itemView.findViewById<ImageView>(R.id.recipeImage)
+
+            // Rezeptdaten anzeigen
+            title.text = recipe.name
+            if (recipe.imageUri != null) {
+                image.setImageURI(Uri.parse(recipe.imageUri))
+            } else {
+                image.setImageResource(R.drawable.platzhalter) // Platzhalterbild
+            }
+
+            // Klick-Listener für das Rezept
+            itemView.setOnClickListener {
+                onRecipeClick(recipe)
+            }
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_recipe, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.bind(recipes[position])
+    }
+
+    override fun getItemCount() = recipes.size // Gesamtanzahl der Rezepte
+}
\ No newline at end of file

app/src/main/java/com/example/myapplication/RecipeDetailActivity.kt

+package com.example.myapplication
+
+import android.net.Uri
+import android.os.Bundle
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+import android.widget.TextView
+import android.widget.ImageView
+import android.content.Intent
+
+class RecipeDetailActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Theme basierend auf gespeicherten Einstellungen setzen
+        val preferences = getSharedPreferences("appSettings", MODE_PRIVATE)
+        val savedColorOption = preferences.getInt("colorOption", 1)
+        setTheme(if (savedColorOption == 1) R.style.Theme_myapplication else R.style.Theme_MyApp_BlueTheme)
+
+        setContentView(R.layout.activity_recipe_detail)
+
+        // Rezeptdaten aus Intent abrufen
+        val recipe = intent.getParcelableExtra<Recipe>("RECIPE")
+
+        // UI-Elemente initialisieren
+        val recipeNameTextView = findViewById<TextView>(R.id.recipeTitle)
+        val recipeImageView = findViewById<ImageView>(R.id.recipeImage)
+        val recipeIngredientsTextView = findViewById<TextView>(R.id.recipeIngredients)
+        val recipeInstructionsTextView = findViewById<TextView>(R.id.recipeInstructions)
+        val startCookingButton = findViewById<Button>(R.id.startCookingButton)
+
+        // Rezeptinformationen anzeigen
+        recipe?.let {
+            recipeNameTextView.text = it.name
+            recipeIngredientsTextView.text = "Zutaten: ${it.ingredients}"
+            recipeInstructionsTextView.text = "Anleitung: ${it.instructions}"
+
+            if (!it.imageUri.isNullOrEmpty()) {
+                recipeImageView.setImageURI(Uri.parse(it.imageUri))
+            } else {
+                recipeImageView.setImageResource(R.drawable.platzhalter) // Platzhalterbild
+            }
+        }
+
+        // Klick-Listener für den "Kochen starten"-Button
+        startCookingButton.setOnClickListener {
+            val intent = Intent(this, CookingModeActivity::class.java)
+            intent.putExtra("RECIPE", recipe)
+            startActivity(intent)
+        }
+    }
+}

app/src/main/java/com/example/myapplication/SettingsActivity.kt

+package com.example.myapplication
+
+import android.content.SharedPreferences
+import android.os.Bundle
+import android.widget.Button
+import android.widget.RadioButton
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+
+class SettingsActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Theme basierend auf Einstellungen setzen
+        val preferences = getSharedPreferences("appSettings", MODE_PRIVATE)
+        val savedColorOption = preferences.getInt("colorOption", 1)
+        setTheme(if (savedColorOption == 1) R.style.Theme_myapplication else R.style.Theme_MyApp_BlueTheme)
+
+        setContentView(R.layout.activity_settings)
+
+        val colorOption1 = findViewById<RadioButton>(R.id.colorOption1)
+        val colorOption2 = findViewById<RadioButton>(R.id.colorOption2)
+        val saveButton = findViewById<Button>(R.id.saveButton)
+
+        // Aktuelle Einstellungen laden
+        colorOption1.isChecked = savedColorOption == 1
+        colorOption2.isChecked = savedColorOption == 2
+
+        saveButton.setOnClickListener {
+            // Auswahl speichern
+            val newColorOption = if (colorOption1.isChecked) 1 else 2
+            preferences.edit().putInt("colorOption", newColorOption).apply()
+
+            // Rückmeldung an den Nutzer
+            Toast.makeText(this, "Einstellungen erfolgreich gespeichert!", Toast.LENGTH_SHORT).show()
+        }
+    }
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file