Get specific index of JSON Nested objects in java Android

Question

How I can get only the "name" string of every object under "fields" Array, of main Array index at 0 & then next index using loop or with something super idea

[
    {
        "name": "Bank1",
        "fields": [
            {
                "name": "Email",
                "slug": "email",
                "type": "input"
            },
            {
                "name": "City",
                "slug": "city",
                "type": "input"
            },
            {
                "name": "Screenshot",
                "slug": "screenshot",
                "type": "file"
            },
            {
                "name": "Full Name",
                "slug": "full-name",
                "type": "input"
            }
        ],
        "status": "Active"
    },
    {
        "name": "Bank2",
        "fields": [
            {
                "name": "Email",
                "slug": "email",
                "type": "input"
            },
            {
                "name": "City",
                "slug": "city",
                "type": "input"
            },
            {
                "name": "Screenshot",
                "slug": "screenshot",
                "type": "file"
            },
            {
                "name": "Submitted Date",
                "slug": "submitted-date",
                "type": "calendar"
            }
        ],
        "status": "Active"
    }
]

Output I want:
Email
City
Screenshot
Full Name

Means in the output, I have got index 0, first object array data...

What I have done yet

public void onResponse(String response) {
                        try {
                            JSONArray jsonArray = new JSONArray(response);


                            for (int i = 0; i < jsonArray.length(); i++) {
                                JSONObject jsonObject = jsonArray.getJSONObject(i);

                               
                                String p_name = jsonObject.getString("name");

                                 ArrayList<String> arr = new ArrayList<>();

                                JSONArray ja = jsonObject.getJSONArray("fields");
                                int len = ja.length();

                                for (int j = 0; j < len; j++) {
                                    JSONObject json = ja.getJSONObject(j);
                                    arr.add(json.getString("name"));
                                }


}}catch block...

this gives me all indexes name data i want only specific index data
My Current Output:
Email
City
Screenshot
Full Name
Email
City
Screenshot
Submitted Date

Use Hash map for storing both index and its value name

Piyush
– Piyush

2021-08-25 05:25:45 +00:00
Commented Aug 25, 2021 at 5:25 — Piyush
– Piyush, Commented Aug 25, 2021 at 5:25
how can you show me an example? @Piyush

AndroWaqar
– AndroWaqar

2021-08-25 05:35:36 +00:00
Commented Aug 25, 2021 at 5:35 — AndroWaqar
– AndroWaqar, Commented Aug 25, 2021 at 5:35

Vatsal Dholakiya · Accepted Answer · 2021-08-25 04:58:15Z

1

If you want to get specific index data then you should pass if condition in for loop.

EX: to get output of index 0 like,

Email

City

Screenshot

Full Name

Your code would be like below.

public void onResponse(String response) {
                    try {
                        JSONArray jsonArray = new JSONArray(response);


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

                            JSONObject jsonObject = jsonArray.getJSONObject(i);

                           
                            String p_name = jsonObject.getString("name");

                             ArrayList<String> arr = new ArrayList<>();

                            JSONArray ja = jsonObject.getJSONArray("fields");
                            int len = ja.length();

                            for (int j = 0; j < len; j++) {
                                JSONObject json = ja.getJSONObject(j);
                                arr.add(json.getString("name"));
                            }

                           }
 }}catch block...

answered Aug 25, 2021 at 4:58

Vatsal Dholakiya

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6 Comments

AndroWaqar Over a year ago

but there will be infinite index 0,1,2,3.... so how can i do for that?

Vatsal Dholakiya Over a year ago

but I think you said that you want only specific index data.(So, I mean your problem is when you add into list there you need to determine particular index)

Vatsal Dholakiya Over a year ago

So, for that you may need to create model class.

AndroWaqar Over a year ago

No I want only specific data on specific index do you have any solution pls help me

Vatsal Dholakiya Over a year ago

you want to get all data but on other side you want only specific index data when you need right?

|

Ajay K S · Accepted Answer · 2021-08-25 05:19:46Z

0

               int i=gotIndex;//here you can give your exact index that you want
                            JSONObject jsonObject = jsonArray.getJSONObject(i);

                           
                            String p_name = jsonObject.getString("name");

                             ArrayList<String> arr = new ArrayList<>();

                            JSONArray ja = jsonObject.getJSONArray("fields");
                            int len = ja.length();

                            for (int j = 0; j < len; j++) {
                                JSONObject json = ja.getJSONObject(j);
                                arr.add(json.getString("name"));
                            }

here you used the loop you can use the json object out side the loop with using the index number i (jsonObject = jsonArray.getJSONObject(i))

edited Aug 25, 2021 at 5:19

answered Aug 25, 2021 at 4:43

Ajay K S

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9 Comments

AndroWaqar Over a year ago

but i want next array data which means index 1 after 0 data thats why i used loop any solution? @AjayKS

Ajay K S Over a year ago

what is your real problem?

AndroWaqar Over a year ago

see question I want specific index "fields" array data, under that only name string of objects

AndroWaqar Over a year ago

see now you will understand i have updated my question @AjayKS

Ajay K S Over a year ago

I think the code is correct, and your printing method or something is incorrect, the logic you mentioned is correct. the implementation method is incorrect.

|

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