I have a list in my POJO class:
"userQuoteTravellers": [
{
"id": 1354,
"quoteId": 526,
"travellerId": null
}
]
I want to pass this list as it is in JSONArray and passing it as:
JSONArray.put(list)
It is being sent as:
"userQuoteTravellers": [ "[]" ]
But I want to send it as
"userQuoteTravellers": []
How can I achieve this in Kotlin without using any loop?
put adds the list as an element to the JSONArray. Thats not what you want. You want your JSONArray to represent the list.
JSONArray offers a constructor for that:
val jsonArray = JSONArray(listOf(1, 2, 3))
But there is a much easier way. You don't need to worry about single properties. Just pass the whole POJO.
Let's say you have this:
class QuoteData(val id: Int, val quoteId: Int, travellerId: Int?)
class TravelerData(val userQuoteTravellers: List<QuoteData>)
val travelerData = TravelerData(listOf(QuoteData(1354, 546, null)))
You just have to pass travelerData to the JSONArray constructor:
val travelerDataJson = JSONArray(travelerData)
and it will be represented like this:
"userQuoteTravellers": [ { "id": 1354, "quoteId": 526, "travellerId": null } ]
With Dependencies
Add to your gradle:
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
Convert ArrayList to JsonArray
val jsonElements = (JsonArray) new Gson().toJsonTree(itemsArrayList)
Without Dependencies
val jsonElements = JSONArray(itemsArrayList)
If I read the JSONArray constructors correctly, you can build them from any Collection (arrayList is a subclass of Collection) like so:
val list = ArrayList<String?>()
list.add("jigar")
list.add("patel")
val jsArray = JSONArray(list)
You can also use GSON for read json see below example:
import com.google.gson.annotations.Expose
import com.google.gson.annotations.SerializedName
class userQuoteTravellers {
@SerializedName("id")
@Expose
var id: Int? = null
@SerializedName("quoteId")
@Expose
var quoteId: Int? = null
@SerializedName("travellerId")
@Expose
var travellerId: Any? = null
}
You can achieve this by using this
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
var gson = Gson()
var jsonData = gson.toJson(PostPojo::class.java)
try this:
val userQuote = response.getJSONArray("userQuoteTravellers")
then call the data inside like this:
for (i in 0 until userQuote.length()) {
val quotes = userQuote.getJSONObject(i)
// then call the other data here
}