How to convert String to JSON Object in Kotlin Android

Question

I need help to convert String in JSON object.

This is the response I am getting from WebView

 webView.evaluateJavascript(
                    "document.getElementById('formio-submitted-data').textContent"
            ) { value ->

The response is

  value = ""{\"data\":{\"plantName\":\"Bhanu\",\"address\":\"Abcd\",\"totalCapacity\":25},\"isValid\":true}""

The response I have got is in a string. I have to convert it into JSON. How can I achieve this?

Does this help https://www.bezkoder.com/kotlin-parse-json-gson/? — Bharat, Aug 05 '21 at 05:39
My JSON contain \ I have to convert value into a JSON object and forward it. I Don't know how to achieve it. — Bhanu Nautiyal, Aug 05 '21 at 05:43
It is like this . ""{\"data\":{\"FIRSTFIELD\":\"1\",\"FIRSTFIELD2\":\"2}"" This is the JSON I AM GETTING — Bhanu Nautiyal, Aug 05 '21 at 05:49
may be replace \" with just single quote and then try to use the same function — Bharat, Aug 05 '21 at 05:53
webView.evaluateJavascript( "document.getElementById('formio-submitted-data').textContent" ) { value -> This is my code. and I am getting value = "{\"data\":{\"plantName\":\"1\",\"address\":\"3\",\"totalCapacity\":2},\"isValid\":true}" now I have to convert it to json object. but idk how to remove this \ — Bhanu Nautiyal, Aug 05 '21 at 06:14
Does this answer your question? [Kotlin escaping forward slashes usign Gson](https://stackoverflow.com/questions/56258077/kotlin-escaping-forward-slashes-usign-gson) — Altariwing, Aug 05 '21 at 06:25

score 1 · Answer 1 · answered Aug 05 '21 at 06:26

1

Try this

val jsonParser = JsonParser()
val jsonObject = jsonParser.parse("your jsonString with backslash").asJsonObject

answered Aug 05 '21 at 06:26

Bharat

1,192
7
14

I was doing this before val resp: JsonObject = JsonParser().parse(value).asJsonObject val jsonObject = JsonObject() . but my app crashes and it is giving me error A/chromium: [FATAL:jni_android.cc(249)] Please include Java exception stack in crash report A/libc: Fatal signal 5 (SIGTRAP), code -6 (SI_TKILL) in tid 4443 – Bhanu Nautiyal Aug 05 '21 at 06:41
Just to narrow down the problem, can you please try without \. I mean manually remove them and see if you still get this error. Just to find out this exception is because of \ – Bharat Aug 05 '21 at 06:45
I am trying to remove \ manually but this value.replace("//","") is not working. Or I should Iterate one by one. Kotlin does not have replaceAll function – Bhanu Nautiyal Aug 05 '21 at 07:04

score 0 · Accepted Answer · edited Aug 06 '21 at 11:23

I have got the solution.

The problem was in my script in webview.

What I did was

doneButton.setOnClickListener{
            var view=it
            webView.evaluateJavascript(
                    "JSON.parse(document.getElementById('formio-submitted-data').textContent)"
            ) { value ->
                if(value.length!=2){

                    val resp: JsonObject = JsonParser().parse(value).asJsonObject
                    val jsonObject = JsonObject()
                    jsonObject.add("data", resp)

I have changed the code inside evaluateJavaScript.

How to convert String to JSON Object in Kotlin Android

2 Answers2