My goal is to configure my app so that upon first start, it grabs parcelable “Contact” items from Firebase and loads them into an arraylist.

My contact is defined as follows:

data class Contact(
    val contactName: String?,
    val contactNumber:Long,
    val contactEventList: ArrayList<Event?>
) : Parcelable{
    constructor(parcel: Parcel) : this(
        parcel.readString(),
        parcel.readLong(),
        parcel.readArrayList(Event::class.java.classLoader) as ArrayList<Event?>
    )
    override fun writeToParcel(parcel:Parcel, flags: Int) {
        parcel.writeString(contactName)
        parcel.writeLong(contactNumber)
        parcel.writeList(contactEventList)
    }
    override fun describeContents(): Int {
        return 0
    }
    companion object CREATOR : Parcelable.Creator<Contact> {
        override fun createFromParcel(parcel: Parcel): Contact {
            return Contact(parcel)
        }
        override fun newArray(size: Int): Array<Contact?> {
            return arrayOfNulls(size)
        }
    }
}

And the call to Firebase:

val contactUpdateListener = object: ValueEventListener{
        override fun onDataChange(snapshot: DataSnapshot) {
            for(postSnapshot in snapshot.children){
                val savedContact = postSnapshot.getValue(Contact::class.java)
                if (savedContact != null) {
                    contactList.add(savedContact)
                }
            }
                Log.println(Log.ASSERT, "", "UPDATING CONTACTS")
                contactDisplayAdapter.notifyDataSetChanged()
            }
        override fun onCancelled(error: DatabaseError) {
        }
    }
    dbRef.child("User").child(auth.currentUser?.uid.toString()).child("Contacts").addValueEventListener(contactUpdateListener)

Yet when running the code, I get the error “Class does not define a no-argument constructor.“

I have tried adding constructor():this(){} to the Contact, but that results in an error message saying “There’s a cycle in the delegation calls chain“

Very new to Android development and still learning OOP in general, couldn’t find much information on this elsewhere, would appreciate any suggestions!