);
}
```
**iOS Player (Swift):**
```swift
import DotLottie
import UIKit
class ThemedViewController: UIViewController {
var animationView: DotLottieView!
override func viewDidLoad() {
super.viewDidLoad()
// Initialize player
animationView = DotLottieView()
animationView.frame = view.bounds
view.addSubview(animationView)
// Load with theme
if let url = Bundle.main.url(forResource: "icon", withExtension: "lottie") {
animationView.loadAnimation(from: url, themeId: "light")
}
// Detect system theme
if traitCollection.userInterfaceStyle == .dark {
animationView.setTheme("dark")
}
animationView.play()
}
override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
super.traitCollectionDidChange(previousTraitCollection)
// Respond to system theme changes
if traitCollection.hasDifferentColorAppearance(comparedTo: previousTraitCollection) {
let themeId = traitCollection.userInterfaceStyle == .dark ? "dark" : "light"
animationView.setTheme(themeId)
}
}
func switchToBrandTheme(_ brandId: String) {
// Switch to brand-specific theme
animationView.setTheme("brand_\(brandId)")
}
func getAvailableThemes() -> [String] {
return animationView.getThemes()
}
}
```
**Android Player (Kotlin):**
```kotlin
import com.lottiefiles.dotlottie.core.DotLottiePlayer
import android.content.res.Configuration
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
class ThemedActivity : AppCompatActivity() {
private lateinit var player: DotLottiePlayer
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Initialize player
player = DotLottiePlayer(this)
// Load with theme based on system
val themeId = if (isSystemInDarkMode()) "dark" else "light"
player.load("icon.lottie", themeId = themeId)
player.play()
}
override fun onConfigurationChanged(newConfig: Configuration) {
super.onConfigurationChanged(newConfig)
// Respond to theme changes
val themeId = if (isSystemInDarkMode()) "dark" else "light"
player.setTheme(themeId)
}
private fun isSystemInDarkMode(): Boolean {
return resources.configuration.uiMode and
Configuration.UI_MODE_NIGHT_MASK ==
Configuration.UI_MODE_NIGHT_YES
}
fun switchTheme(themeId: String) {
player.setTheme(themeId)
}
fun getAvailableThemes(): List