Use custom JSON serializers with firebase

Question

Is it possible to get JsonObjects or strings in Json format when using DataSnapshot.getValue()? Maybe I wasn\'t thorough enough with my search, but I couldn\'t find a way to

Answer 1

Based on @RominaV answer and in case it may be helpful to someone that's what I have in Kotlin:

 myRef.addValueEventListener(object : ValueEventListener {
        override fun onDataChange(dataSnapshot: DataSnapshot) {

            adapter.clear()

            dataSnapshot.children.forEach {

                val cardMap = it.value
                val json = Gson().toJson(cardMap)
                val card = Gson().fromJson(json, Card::class.java)

                adapter.add(CardItem(card))
            }

        }

And that's my Card class

data class Card(var courseId: String, var cardQuestion: String, var cardAnswer: String) {
     constructor() : this("", "", "")
}

I can also get the same outcome traversing through the dataSnapshot children this way:

dataSnapshot.children.forEach {

        adapter.clear()

        val courseId = it.child("courseId").value as String
        val question = it.child("cardQuestion").value as String
        val answer = it.child("cardAnswer").value as String

        adapter.add(CardItem(Card(courseId, question, answer))
}

Thanks. :)