Navigation 훑어보기_1

SecondFragmentDirections.kt

// Generated by Navigation Architecture Components.
class SecondFragmentDirections private constructor() {
    private data class ActionToThird(val label: String?) : NavDirections {
        override fun getActionId(): Int = R.id.action_to_third

        @Suppress("CAST_NEVER_SUCCEEDS")
        override fun getArguments(): Bundle {
            val result = Bundle()
            if (Parcelable::class.java.isAssignableFrom(String::class.java)) {
                result.putParcelable("label", this.label as Parcelable?)
            } else if (Serializable::class.java.isAssignableFrom(String::class.java)) {
                result.putSerializable("label", this.label as Serializable?)
            } else {
                throw UnsupportedOperationException(String::class.java.name +" 생략.")
            }
            return result
        }
    }

    companion object {
        fun actionToThird(label: String?): NavDirections = 
            ActionToThird(label)
        }
    }
}