CODEWITHSUNDEEP
androidkotlin
Gayan Hewa
Gayan Hewa

Reputation: 2397

Access nested JSON value first element

I am trying to figure out how to access a nested JSON attributes, first element. Basically, my data looks like the following:

{ 
  "message": "Error scenario",
  "errors": {
   "error_one": "error_one_message",
   "error_two": "error_two"
  }
}

Within my code, I am doing something like:

// it is an instance of HttpException
val message = JsonParser().parse(it.response().errorBody()?.string())
                           .asJsonOject["message"]
                           .asString

What should I change in my code to make the variable message have the value error_one_message

Upvotes: 0

Views: 1397

Answers (3)

Haider Malik
Haider Malik

Reputation: 1771

//the whole json object
val baseJsonResponse = JSONObject("JSON response")
//the error json object
val errorObject = baseJsonResponse.getJSONObject("error")

//get the string
val location = errorObject.getString("error_one")

edit: since you need the first element of the base object you will need to iterate through the keys to get the 1st key. In java it would be:

String keyForFirstJsonbject = errorObject.keySet().iterator().next();

im guessing in Kotlin it will be:

val keyForFirstJsonbject = errorObject.keys.elementAt(0)

then finish off with:

//get the string
val location = errorObject.getString(keyForFirstJsonbject)

Upvotes: 1

Wilson Sim
Wilson Sim

Reputation: 521

Try this?

val obj = JSONObject("ur Json string")
val error1 = obj.getJSONObject("errors").getString("error_one")

Upvotes: 1

Ahmed Jamal
Ahmed Jamal

Reputation: 201

I think this way will work 

    val message = JsonParser().parse(it.response().errorBody()?.string())
                       .asJsonObject["errors"]["error_one"]
                       .asString

but its better to use converting library like Gson here is GitHub Link

Upvotes: 2

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