JSONException: Value in kotlin

Question

I want to fetch json data in my app . l used recycle view for displaying data . when l run app l got FATAL EXCEPTION

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.iraqairoirt.iraqairports, PID: 29757
    java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1386)
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1496)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1386) 
E/AndroidRuntime: Caused by: org.json.JSONException: Value [{"_id":"5c0ba2a7ab233e8499463a95","id":"A0466\/18","entity":"MR","status":"LC","Qcode":"MRLC","Area":"AGA","SubArea":"Movement and landing area","Condition":"Limitations","Subject":"Runway","Modifier":"Closed","message":"RWY 15L\/33R CLSD DUE TO MAINT DURING VMC ONLY.\nCREATED: 05 Dec 2018 06:59:00 \nSOURCE: ORBIYNYX","startdate":"2018-12-07T11:00:00.000Z","enddate":"2018-12-17T13:00:00.000Z","all":"A0466\/18 NOTAMN\nQ) ORBB\/QMRLC\/IV\/NBO\/A\/000\/999\/3316N04414E005\nA) ORBI\nB) 1812071100\nC) 1812171300\nD) MON FRI 1100-1300\nE) RWY 15L\/33R CLSD DUE TO MAINT DURING VMC ONLY.\nCREATED: 05 Dec 2018 06:59:00 \nSOURCE: ORBIYNYX","location":"ORBI","isICAO":true,"Created":"2018-12-05T06:59:00.000Z","key":"A0466\/18-ORBI","type":"airport","StateCode":"IRQ","StateName":"Iraq"},{"_id":"5c0ba2a7ab233e8499463a96","id":"A0409\/18","entity":"MX","status":"LC","Qcode":"MXLC","Area":"AGA","SubArea":"Movement and landing area","Condition":"Limitations","Subject":"Taxiway(s)","Modifier":"Closed","message":"TWY M-NORTH CLSD FOR MAINT BETWEEN SPOT 3 AND TWY M6. UAVS CAN\nOPERATE AT THEIR OWN DISCRETION.\n)\nUNITED STATES NOF DISCLAIMS FOREIGN NOTAM ACCURACY OR COMPLETENESS\nCREATED: 01 Dec 2018 11:44:00 \nSOURCE: LIIAYNYX","startdate":"2018-11-23T04:00:00.000Z","enddate":"2018-12-21T16:00:00.000Z","all":"A0409\/18 NOTAMN\nQ) ORBB\/QMXLC\/IV\/M\/A\/000\/999\/3316N04414E005\nA) ORBI B) 1811230400 C) 1812211600\nD) FRI 0400-1600\nE) TWY M-NORTH CLSD FOR MAINT BETWEEN SPOT 3 AND TWY M6. UAVS CAN\nOPERATE AT THEIR OWN DISCRETION.\n)\nUNITED STATES NOF DISCLAIMS FOREIGN NOTAM ACCURACY OR COMPLETENESS\nCREATED: 01 Dec 2018 11:44:00 \nSOURCE: LIIAYNYX","location":"ORBI","isICAO":true,"Created":"2018-12-01T11:44:00.000Z","key":"A0409\/18-ORBI","type":"airport","StateCode":"IRQ","StateName":"Iraq"},{"_id":"5c0ba2a7ab233e8499463a97","id":"A0386\/18","entity":"FA","status":"TT","Qcode":"FATT","Area":"AGA","SubArea":"Facilities and services","Condition":"Other","Subject":"Aerodrome","Modifier":"AIRAC AIP Amendments","message":"TRIGGER NOTAM - PERM AIRAC AIP AMDT 07\/18 WEF 06 DEC 2018.\nOMNIDIRECTIONAL DEPARTURE CHART UPDATED.\n)\nUNITED STATES NOF DISCLAIMS FOREIGN NOTAM ACCURACY OR COMPLETENESS\nCREATED: 01 Dec 2018 11:44:00 \nSOURCE: LIIAYNYX","startdate":"2018-12-06T00:00:00.000Z","enddate":"2018-12-19T23:59:00.000Z","all":"A0386\/18 NOTAMN\nQ) ORBB\/QFATT\/IV\/BO\/A\/000\/999\/3316N04414E005\nA) ORBI B) 1812060000 C) 1812192359\nE) TRIGGER NOTAM - PERM AIRAC AIP AMDT 07\/18 WEF 06 DEC 2018.\nOMNIDIRECTIONAL DEPARTURE CHART UPDATED.\n)\nUNITED STATES NOF DISCLAIMS FOREIGN NOTAM ACCURACY OR COMPLETENESS\nCREATED: 01 Dec 2018 11:44:00 \nSOURCE: LIIAYNYX","location":"ORBI","isICAO":true,"Created":"2018-12-01T11:44:00.000Z","key":"A0386\/18-ORBI","type":"airport","StateCode":"IRQ","StateName":"Iraq"},{"_id":"5c0ba2a7ab233e8499463a98","id":"A0445\/18","entity":"MT","status":"CM","Qcode":"MTCM","Area":"AGA","SubArea":"Movement and landing area","Condition":"Changes","Subject":"Threshold","Modifier":"Displaced","message":"THR RWY 33L DISPLACED BY 400M. RWY 15R\/33L DECLARED DISTANCES\nCHANGED AS FOLLOWS: TORA, TODA, ASDA, LDA = 2901M. THE FIRST 400M \nOF\nRWY 33L IS NOT AVAILABLE FOR TAXYING ACFT. ALL ACFT DEPARTING FROM\nRWY 33L CAN EXPECT TO ENTER VIA TWY P2 TO P6 OR M6 AND BACKTRACK \nFOR\nDEPARTURE. ALL ACFT ARRIVING ON RWY 15R CAN EXPECT TO BACKTRACK \nAFTER\nLANDING AND VACATE VIA TWY P2 TO P6 OR M6. RWY 15R\/33L INSTRUMENT\nAPPROACHES SUSPENDED. ONLY VISUAL APPROACHES AVAILABLE. CIVILIAN\nAIRCRAFT MAY ONLY USE RWY 15R\/33L DURING DAYLIGHT HOURS AND VMC.\nCREATED: 29 Nov 2018 10:54:00 \nSOURCE: ORBIYNYX","startdate":"2018-11-29T11:00:00.000Z","enddate":"2019-02-28T10:59:00.000Z","all":"A0445\/18 NOTAMN\nQ) ORBB\/QMTCM\/IV\/NBO\/A\/000\/999\/3316N04414E005\nA) ORBI\nB) 1811291100\nC) 1902281059\nE) THR RWY 33L DISPLACED BY 400M. RWY 15R\/33L DECLARED DISTANCES\nCHANGED AS FOLLOWS: TORA, TODA, ASDA, LDA = 2901M. THE FIRST 400M \nO
    F\nRWY 33L IS NOT AVAILABLE FOR TAXYING ACFT. ALL ACFT DEPARTING FROM\nRWY 33L CAN EXPECT TO ENTER VIA TWY P2 TO P6 OR M6 AND BACKTRACK \nFOR\nDEPARTURE. ALL ACFT ARRIVING ON RWY 15R CAN EXPECT TO BACKTRACK \nAFTER\nLANDING AND VACATE VIA TWY P2 TO P6 OR M6. RWY 15R\/33L INSTRUMENT\nAPPROACHES SUSPENDED. ONLY VISUAL APPROACHES AVAILABLE. CIVILIAN\nAIRCRAFT MAY ONLY USE RWY 15R\/33L DURING DAYLIGHT HOURS AND VMC.\nCREATED: 29 Nov 2018 10:54:00 \nSOURCE: ORBIYNYX","location":"ORBI","isICAO":true,"Created":"2018-11-29T10:54:00.000Z","key":"A0445\/18-ORBI","type":"airport","StateCode":"IRQ","StateName":"Iraq"}] of type org.json.JSONArray cannot be converted to JSONObject
        at org.json.JSON.typeMismatch(JSON.java:111)
        at org.json.JSONObject.<init>(JSONObject.java:160)
        at org.json.JSONObject.<init>(JSONObject.java:173)
        at com.iraqairoirt.iraqairports.NotamOrbi$Arr.handleJson(NotamOrbi.kt:90)
        at com.iraqairoirt.iraqairports.NotamOrbi$Arr.onPostExecute(NotamOrbi.kt:77)
        at com.iraqairoirt.iraqairports.NotamOrbi$Arr.onPostExecute(NotamOrbi.kt:45)
        at android.os.AsyncTask.finish(AsyncTask.java:660)
        at android.os.AsyncTask.-wrap1(AsyncTask.java)
        at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:677)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6776)

main activity hold all data with recycle view

class NotamOrbi : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.notam_orbi)

        val recyclerView = findViewById<RecyclerView>(R.id.recyclerDate)
        val data = ArrayList<NOTAMORBI>()
        val adapter = NotamOrbiAdapter(data)
        recyclerView.adapter = adapter

        val url =
            "/locations=orbi"
        Arr().execute(url)


    }


    inner class Arr : AsyncTask<String, String, String>() {


        override fun onPreExecute() {
            super.onPreExecute()


        }

        //        for build connection
        override fun doInBackground(vararg url: String?): String {

            var text: String
            val connection = URL(url[0]).openConnection() as HttpURLConnection
            connection.connectTimeout = 700

            try {
                connection.connect()
                text = connection.inputStream.use { it.reader().use { reader -> reader.readText() } }


            } finally {

                connection.disconnect()

            }
            return text
        }

        override fun onPostExecute(result: String?) {

            super.onPostExecute(result)
            handleJson(result)


        }

        override fun onProgressUpdate(vararg text: String?) {


        }

        @SuppressLint("WrongViewCast")
        private fun handleJson(jsonString: String?) {

            val jsonObj = JSONObject(jsonString)
//        val result = jsonObj.getJSONObject("result")
//        val response = result.getJSONObject("response")
//        val jsonArray = JSONArray(response.get("data").toString())


            val list = ArrayList<NOTAMORBI>()
            var x = 0
            while (x < jsonObj.length()) {

                val jsonObject = jsonObj.getJSONObject(x.toString())


                list.add(NOTAMORBI(

                        jsonObject.getString("id")

                    )
                )


                x++
            }
            list.forEach(::println)


        }


    }


    class NotamOrbiAdapter(val list: ArrayList<NOTAMORBI>) : RecyclerView.Adapter<NotamOrbiAdapter.ViewHolder>() {
        override fun onCreateViewHolder(p0: ViewGroup, p1: Int): ViewHolder {

            val v = LayoutInflater.from(p0.context).inflate(R.layout.notam_reclycer_card, p0, false)
            return ViewHolder(v)
        }

        override fun getItemCount(): Int {
            return list.size
        }

        override fun onBindViewHolder(p0: ViewHolder, p1: Int) {

            val data: NOTAMORBI = list[p1]

            p0.id_notam.text = data.idNotam

        }


        class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

            val id_notam = itemView.findViewById<TextView>(R.id.id_notam)

        }

    }
}

data class

data class NOTAMORBI (val idNotam : String)

data json

[
  {
    "_id": "5c0b4ed2ab233e849941925c",
    "id": "A0466/18",
    "entity": "MR",
    "status": "LC",
    "Qcode": "MRLC",
    "Area": "AGA",
    "SubArea": "Movement and landing area",
    "Condition": "Limitations",
    "Subject": "Runway",
    "Modifier": "Closed",
    "message": "RWY 15L/33R CLSD DUE TO MAINT DURING VMC ONLY.\nCREATED: 05 Dec 2018 06:59:00 \nSOURCE: ORBIYNYX",
    "startdate": "2018-12-07T11:00:00.000Z",
    "enddate": "2018-12-17T13:00:00.000Z",
    "all": "A0466/18 NOTAMN\nQ) ORBB/QMRLC/IV/NBO/A/000/999/3316N04414E005\nA) ORBI\nB) 1812071100\nC) 1812171300\nD) MON FRI 1100-1300\nE) RWY 15L/33R CLSD DUE TO MAINT DURING VMC ONLY.\nCREATED: 05 Dec 2018 06:59:00 \nSOURCE: ORBIYNYX",
    "location": "ORBI",
    "isICAO": true,
    "Created": "2018-12-05T06:59:00.000Z",
    "key": "A0466/18-ORBI",
    "type": "airport",
    "StateCode": "IRQ",
    "StateName": "Iraq"
  }
]

does any one have solution please ?

Have you read the error message of the exception? What does it say? The solution is right there, in the error message. But you need to read it. — JB Nizet
– JB Nizet, Commented Dec 8, 2018 at 14:21
@JBNizet l read it but l dont know how to fix . l try but not result — Ali Ghassan
– Ali Ghassan, Commented Dec 8, 2018 at 14:23

Blue Jones · Accepted Answer · 2018-12-08 14:31:30Z

1

Your json is an array, it must be an object; remove the [ and ] wrapping your json

Or use JSONArray instead of JSONObject

edited Dec 8, 2018 at 14:31

answered Dec 8, 2018 at 14:30

Blue Jones

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11 Comments

Ali Ghassan Over a year ago

do you think my RecyclerView view okay ?

Blue Jones Over a year ago

Your recyclerview needs a layout manager(unless you've set it in XML). The current issue however is because trying to map an array(your json) to JSONObject.

Ali Ghassan Over a year ago

l update my code from JSONObject to JSONArray and he is work fine . but no data display in activity l think the problem the RecyclerView can you check it please RecyclerView ? l am junior

Blue Jones Over a year ago

Add a layout manager to recylcerview recyclerView.layoutManager = LinearLayoutManager(context)

Ali Ghassan Over a year ago

l added but its same recyclerView.layoutManager = LinearLayoutManager(this,LinearLayout.VERTICAL,false)

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