🎯 Goal

This PR implements the Android 12+ SplashScreen API to provide a consistent branded launch experience that matches the red background theme of the original XML-based Pokédex app. The compose version now has the same visual branding and smooth launch experience as the XML version, ensuring brand consistency across both implementations.

Key objectives:

• Match the iconic red background from the XML Pokédex version
• Provide smooth app launch experience with proper splash screen
• Maintain Pokemon/Pokédex branding during app startup
• Implement modern Android 12+ splash screen standards

🛠 Implementation details

• Added SplashScreen API dependency to core:designsystem module for theme access
• Created custom Pokemon-themed splash screen with red background in styles.xml
• Added Pokemon logo/icon for splash screen branding
• Updated AndroidManifest.xml to use the new splash theme
• Implemented splash screen handling in MainActivity.kt with proper transition
• Maintained backward compatibility with pre-Android 12 devices

Architecture decisions:

• Splash dependency in core:designsystem to keep all themes centralized
• Used api configuration to expose splash functionality to app module
• Followed multi-module best practices for theme organization

✍️ Explain examples

Files modified/added:

1. Dependency addition:

// core/designsystem/build.gradle.kts
dependencies {
    api(libs.androidx.core.splashscreen) // Added for theme access
    // ... existing dependencies
}

2. Splash theme creation:

<!-- core/designsystem/src/main/res/values/styles.xml -->
<style name="Theme.Pokedex.SplashScreen" parent="Theme.SplashScreen">
    <item name="windowSplashScreenBackground">@color/pokemon_red</item>
    <item name="windowSplashScreenAnimatedIcon">@drawable/ic_splash</item>
    <item name="windowSplashScreenIconBackground">@color/white</item>
</style>

3. MainActivity implementation:

// app/src/main/kotlin/.../MainActivity.kt
override fun onCreate(savedInstanceState: Bundle?) {
    val splashScreen = installSplashScreen()
    super.onCreate(savedInstanceState)
    
    // Splash screen will automatically transition to main content
    setContent {
        PokedexTheme {
            // Main app content
        }
    }
}

4. Manifest configuration:

<!-- app/src/main/AndroidManifest.xml -->
<activity
    android:name=".MainActivity"
    android:theme="@style/Theme.Pokedex.SplashScreen"
    android:exported="true">

Visual result:

• Launch: Users see red background with Pokemon branding (matching XML version)
• Transition: Smooth animation to main Pokédex interface
• Consistency: Both XML and Compose versions now have matching launch experience
• Modern: Follows Android 12+ design guidelines while maintaining brand identity

This implementation ensures that users get the same iconic red Pokédex launch experience whether they're using the XML or Compose version of the app, while leveraging modern Android splash screen capabilities.