How to parse json data using Gson from the given link

Question

Link :- http://api.androidhive.info/contacts/ problem :- from the given link i am able to parse contact attribute value but not able to parse phone attribute value. Code :-

class GetGSONdata extends AsyncTask<String, Integer, String> {

        @Override
        protected String doInBackground(String... params) {
            try {
                URL url = new URL("http://api.androidhive.info/contacts/");
                HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
                int responsecode = urlConnection.getResponseCode();
                Log.e("responsecode", responsecode + "");
                InputStreamReader inputStreamReader = new InputStreamReader(urlConnection.getInputStream(), "UTF-8");
                Gson gson = new Gson();
                JsonReader reader = new JsonReader(inputStreamReader);
                reader.beginObject();
                while (reader.hasNext()) {
                    String aname = reader.nextName();
                    Log.e("Array name", aname);
                    if (aname.equalsIgnoreCase("contacts")) {
                        reader.beginArray();
                        while (reader.hasNext()) {
                            Contacts contacts = gson.fromJson(reader, Contacts.class);
                            list.add(contacts);
                        }
                    }
                }
                reader.endObject();
                reader.close();
            } catch (Exception e) {
                Log.e("Exception test", e.toString());
            }

for (int i = 0; i < list.size(); i++) {
                Log.e("json data", list.get(i).getId() + " " + list.get(i).getName());

            }
            return null;
        }
    }


    public class Contacts {
        private String id;
        private String name;
        private String email;

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getEmail() {
            return email;
        }

        public void setEmail(String email) {
            this.email = email;
        }

        class Phone{
            private String mobile;
            private String home;
            private String office;

            public String getMobile() {
                return mobile;
            }

            public void setMobile(String mobile) {
                this.mobile = mobile;
            }

            public String getHome() {
                return home;
            }

            public void setHome(String home) {
                this.home = home;
            }

            public String getOffice() {
                return office;
            }

            public void setOffice(String office) {
                this.office = office;
            }
        }

    }

Thanks .

Keep the Phone class as a separate class and add a getter method for Phone in your Contacts class, since phone is a separate object inside Contacts object. So, getPhone will return you the phone object entirely. Hope this helps — Santhana
– Santhana, Commented Nov 2, 2015 at 5:13

fluffyBatman · Accepted Answer · 2015-11-02 05:18:52Z

1

Have an instance of Phone class in your Contacts class.

public class Contacts{
   private Phone phone;  
   private String id;
   private String name;
   private String email;
   private String address;
   private String gender;

   // Getters & Setters

}  
public class Phone{
        private String mobile;
        private String home;
        private String office;

       // Getters & Setters
  }

This should work.

edited Nov 2, 2015 at 5:18

answered Nov 2, 2015 at 5:11

fluffyBatman

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Comments

Dhulaji Pandhare · Accepted Answer · 2015-11-02 05:38:28Z

1

        result  // result is string Json data which is get from sever(Async Task post Execute result)

            Gson gson = new Gson();

            Reader reader;

            try {
                reader = new InputStreamReader(new ByteArrayInputStream(
                        result.getBytes("UTF-8")));
                Type Collectiontype = new TypeToken<Contact>() {
                }.getType();
        Contact lstContact = gson.fromJson(reader, Collectiontype);
        //Contact is pojo class

Use this link for create pojo file and then refer this code

answered Nov 2, 2015 at 5:38

Dhulaji Pandhare

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1 Comment

Dhulaji Pandhare Over a year ago

if it not work then change two line of code reader = new InputStreamReader(new ByteArrayInputStream( result.getBytes("UTF-8"))); Type Collectiontype = new TypeToken<ArrayList<Contact>>() { }.getType(); ArrayList<Contact> lstContact = gson.fromJson(reader, Collectiontype);

N Jay · Accepted Answer · 2015-11-02 05:13:56Z

0

I would recommend using this Website to create your POJO classes so you do not face any issues in the future http://www.jsonschema2pojo.org/

answered Nov 2, 2015 at 5:13

N Jay

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2 Comments

pankaj gupta Over a year ago

@N jay Thanks, very use-full link

N Jay Over a year ago

No worries @pankaj gupta feel free to mark as answer if you believe it helped u.

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