How to convert String to JSON Object in Kotlin Android [duplicate]

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?

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
– Bhanu Nautiyal, Commented Aug 5, 2021 at 5:43
It is like this . ""{\"data\":{\"FIRSTFIELD\":\"1\",\"FIRSTFIELD2\":\"2}"" This is the JSON I AM GETTING — Bhanu Nautiyal
– Bhanu Nautiyal, Commented Aug 5, 2021 at 5:49
may be replace \" with just single quote and then try to use the same function — Bharat
– Bharat, Commented Aug 5, 2021 at 5:53

Bharat · Accepted Answer · 2021-08-05 06:26:41Z

2

Try this

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

answered Aug 5, 2021 at 6:26

Bharat

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4 Comments

Bhanu Nautiyal Over a year ago

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

Bharat Over a year ago

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 \

Bhanu Nautiyal Over a year ago

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

CaptainNemo Over a year ago

Deprecated. Use static function instead - val jsonObject = JsonParser.parseString("your jsonString with backslash")

Mark Rotteveel · Accepted Answer · 2021-08-06 11:23:58Z

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.

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