how to display first two value from json data

Question

i have the json data like below

[
{
    "user": "sam",
    "comment": "jjjjjj",


},
{
    "user": "vishnu",
    "comment": "hello",


},
{
    "user": "ijas",
    "comment": "hello  bachanji ",

},
{
    "user": "kiran",
    "comment": "bye",
  }
]

i display all the data in recycle view using adapter, actualy i want to display the first two data that is

{
"user": "sam",
"comment": "jjjjjj",
}
{
"user": "vishnu",
"comment": "hello",
}

i fetch data using the below code

List<Data> data=new ArrayList<>();
for(int i=0;i<jArray.length();i++){
                    JSONObject json_data = jArray.getJSONObject(i);
                    Data current= new Data();
                    current.user=json_data.getString("user");
                    current.comment= json_data.getString("comment");
                    data.add(current);

how can display the first two data

i didn't face any issue i just want to display the first two data i don't know how to implement it. — Sam, Nov 23 '16 at 08:49
This is simple my friend just use ur logic u got lots of answer. Just google this before u ask question. This question may some duplicate — Nithinlal, Nov 23 '16 at 08:51
@Nithinlal sorry for late for the reply, i got answer for this — Sam, Jun 12 '17 at 10:28

score 2 · Answer 1 · answered Nov 23 '16 at 08:41

List<Data> data=new ArrayList<>();
int length = jArray.length() > 2 ? 2: jArray.length()
for(int i=0;i<length;i++){
                    JSONObject json_data = jArray.getJSONObject(i);
                    Data current= new Data();
                    current.user=json_data.getString("user");
                    current.comment= json_data.getString("comment");
                    data.add(current);

score 1 · Answer 2 · answered Nov 23 '16 at 08:42

1

List<Data> data=new ArrayList<>();
for(int i=0;i<2;i++){
                JSONObject json_data =     jArray.getJSONObject(i);
                Data current= new Data();
                    current.user=json_data.getString("user");
                current.comment=     json_data.getString("comment");
                data.add(current);
}

answered Nov 23 '16 at 08:42

Rishabh Maurya

1,448
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got a exception when size is less than 2 .handle that – Nithinlal Nov 23 '16 at 08:45
int i = (jArray.length()>2)?2:jArray.length(); – Rishabh Maurya Nov 23 '16 at 08:48
In place of 2 write n; – Rishabh Maurya Nov 23 '16 at 08:49
Its just use of ternary operator . – Rishabh Maurya Nov 23 '16 at 08:50
If you will put the whole for loop part in try catch block it won't cause error . – Rishabh Maurya Nov 23 '16 at 08:50
Rishabh @Nithinlal is so curious about this issue. I wish he could post an answer here. :-) – Nabin Nov 23 '16 at 08:53
if u add int arraylength = (jArray.length()>2)?2:jArray.length(); there is no chance for exception. So don't put unnecessary try catch block – Nithinlal Nov 23 '16 at 08:54
I was giving him an alternate option with least modification of code . Try catch comes in handy . – Rishabh Maurya Nov 23 '16 at 08:56

score 1 · Answer 3 · edited May 23 '17 at 10:33

1

Simply you can iterate the list two times and render in UI.

for(int i =0; i< 2; i++){
   Data current = data.get(i);//But we need to check if there is less than 2 entries
   String userName = current.user;
   String comment = current.comment;
   //Now display them
   //Also you can show them in different TextViews
   userNameTextView[i].setText(userName);
   comment[i].setText(comment);
}

That way you can show any number of data.

But usually we use different Adapters to show in list.

edited May 23 '17 at 10:33

Community

1
1

answered Nov 23 '16 at 08:42

Nabin

11,216
8
63
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got a exception when size is less than 2 .handle that – Nithinlal Nov 23 '16 at 08:45
@Nithinlal Please see the comment. Not doing all homework here. – Nabin Nov 23 '16 at 08:46

how to display first two value from json data

3 Answers3