ViewModel Factory

Use ViewModel Factory when you need to pass a value into a ViewModel.

Example: passing context to PlayerModel via viewmodel factory

class PlayerViewModelFactory(private val context: Context) : ViewModelProvider.Factory {
    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        if (modelClass.isAssignableFrom(PlayerModel::class.java)) {
            @Suppress("UNCHECKED_CAST")
            return PlayerModel(context) as T
        }
        throw IllegalArgumentException("Unknown ViewModel class")
    }
}