How to parse JSON Array of String in android

Question

this is the response from the server

{"route":[1,2,3,4,5,6]}

This is my code:

try{
String d = json.getString("route");
}
}catch(JSONException je){
}

and im getting NullPointerException. please help me.

This is my Server Response, Now Give me the solution Link -> http://ajax.tpksym.cloudbees.net/route/route14

the answer is given please have a look, fully pared and tested, add try/catch block with yourself — Jitesh Upadhyay
– Jitesh Upadhyay, Commented May 2, 2014 at 11:22

Nermeen · Accepted Answer · 2014-05-02 11:18:06Z

1

It should be like:

JSONObject jsonResult = new JSONObject("{\"route\":[1,2,3,4,5,6]}");
JSONArray array = jsonResult.getJSONArray("route");
for (int i = 0; i < array.length(); i++) {
     int data = array.getInt(i);
}
....

answered May 2, 2014 at 11:18

Nermeen

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Comments

Shivam Verma · Accepted Answer · 2014-05-02 11:22:28Z

1

try {
        String jsonString = "{\"route\":[1,2,3,4,5,6]}";
        JSONObject jsonObject = new JSONObject(jsonString);
        JSONArray jsonArray = jsonObject.getJSONArray("route");
        for (int i = 0; i < jsonArray.length(); i++) {
           System.out.println(jsonArray.getInt(i));
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

answered May 2, 2014 at 11:22

Shivam Verma

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Comments

Jitesh Upadhyay · Accepted Answer · 2014-05-02 11:47:24Z

1

Hi as yours json is as follows

{
  "route": [
    1,
    2,
    3,
    4,
    5,
    6
  ]
}

so do as follows

String jsondata = "{\"route\":[1,2,3,4,5,6]}";
        JSONObject primaryObject = new JSONObject(jsondata);

        JSONArray jarray = primaryObject.getJSONArray("route");

        for (int i = 0; i < jarray.length(); i++) {

            Integer data = jarray.getInt(i);
            System.out.println("data=="+data);
        }

as you gave the link http://ajax.tpksym.cloudbees.net/route/route14

and data seems there coming as in double i.e. 13.56 etc

so use as follows

String jsondata = "JSON DATA FROM SERVER";
        JSONObject primaryObject = new JSONObject(jsondata);

        JSONArray jarray = primaryObject.getJSONArray("route");

        for (int i = 0; i < jarray.length(); i++) {

            Double data = jarray.getDouble(i);

        }

edited May 2, 2014 at 11:47

answered May 2, 2014 at 11:20

Jitesh Upadhyay

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3 Comments

pankaj Over a year ago

sorry i'm getting NullPointerException :(

Jitesh Upadhyay Over a year ago

where ? can you send the log? if double is having a problem that treat it as string and later you can conver it to double or else

Jitesh Upadhyay Over a year ago

i do not think nullpointer exception is in parsing as if the exception will be there than it will be of type JSONException not nullpointer, please check log, have a debug and than solve

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