Question 127585 in Android Studio Question posted in
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Android Studio – JSONArray converts response null elements to "null"

Trying to handle the response from API in Android Studio by using Kotlin. When converting the response of server from string to json the null values are converted as "null". If the value is null I want it as null. How to solve this problem?

Volley portion of the code:

val stringRequest = StringRequest(Request.Method.GET, url,
                Response.Listener<String> { response ->
                jsonList = JSONArray(response) }

Response of the server:

[
    {
        "id": 213,
        "dummy": null
    }
]

Call as Json

jsonList.getJSONObject(0).get("dummy")

Result of call:

Result of call

As a result the below code will return "null" which is totally useless.

jsonList.getJSONObject(0).get("dummy")?.toSting()
Tags:

2

Answers


  1. 0

    You can use like

    jsonList.getJSONObject(0).get("dummy")?:""

    if the result value is null it return empty string,

    and if you want to get null you should remove .toString()

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  2. 0

    You can check

    jsonList.getJSONObject(0).get("dummy") == JSONObject.NULL

    It will hold true in your case

    So you could do something like this

    val dummy = jsonList.getJSONObject(0).get("dummy")
val dummyString = if (dummy == JSONObject.NULL) null else dummy.toString()
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