Arrange the array depending on the order android?

Question

I have a webservice and I get this response when I call the webservice.

[
    {
        "ProjectID": 1,
        "SLNO": 1,
        "ID": 1,
        "Type": "Text",
        "Name": "First Name",
        "**Order**": 1,
        "Flag": "F"
    },
    {
        "ProjectID": 1,
        "SLNO": 3,
        "ID": 2,
        "Type": "Text",
        "Name": "Company",
        "**Order**": 5,
        "Flag": "F"
    },
    {
        "ProjectID": 1,
        "SLNO": 4,
        "ID": 4,
        "Type": "Text",
        "Name": "Personal Email",
        "**Order**": 3,
        "Flag": "F"
    },
    {
        "ProjectID": 1,
        "SLNO": 2,
        "ID": 8,
        "Type": "Text",
        "Name": "Last Name",
        "**Order**": 2,
        "Flag": "F"
    }
]

Now I want to sort this complete array depending on the order which I get inside this array? How can I achieve this?

I have parsed the json and got the values of Name and Order. — user2699728, Jan 20 '14 at 09:40
you can take a look at this link http://stackoverflow.com/questions/12901742/android-how-to-sort-jsonarray-of-jsonobjects — LeMoN.xaH, Jan 20 '14 at 09:40
If you use your own API then try to sort array server side using OREDER BY query and if not then do it in Android side with array sorting function... — Chirag Ghori, Jan 20 '14 at 09:42

Digvesh Patel · Answer 1 · 2014-01-20T09:48:24.890

1

array = JSONUtil.sort(array, new Comparator(){
               public int compare(Object a, Object b){
                  JSONObject    ja = (JSONObject)a;
                  JSONObject    jb = (JSONObject)b;
                  return Integer.valueOf(ja.getString("**Order**")).compareTo(Integer.valueOf(jb.getString("**Order**")));
               }
            });

edited Jan 20 '14 at 09:48

answered Jan 20 '14 at 09:40

Digvesh Patel

6,503
1
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what will come under object1 and object2? – user2699728 Jan 20 '14 at 09:44

score 0 · Answer 2 · edited Jan 20 '14 at 09:59

0

First of all, add these data in list like an ArrayList or HashMap. Then use the below code to sort your list data based on order.

class HashMapComparator implements Comparator<HashMap<String, String>> {
        private final String key;

        public HashMapComparator(String key) {
            this.key = key;
        }

        @Override
        public int compare(HashMap<String, String> lhs,
                HashMap<String, String> rhs) {
            String firstValue = lhs.get(key);
            String secondValue = rhs.get(key);
            return firstValue.compareTo(secondValue);
        }
    }

and call it as:

 Collections.sort(yourlistDTO, new HashMapComparator("order"));

edited Jan 20 '14 at 09:59

Alberto Solano

7,972
3
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answered Jan 20 '14 at 09:56

Vijju

3,458
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20

It is showing me classcast exception on Collections.sort() method – user2699728 Jan 20 '14 at 10:34
what parameter you are passing ? – Vijju Jan 20 '14 at 10:36
I have added the json array in arraylist. and then called this fuction. – user2699728 Jan 20 '14 at 10:38
JSONArray jsonArray; try { jsonArray= new JSONArray(result); // Log.e("ARRAY IS", jsonArray.toString()); ArrayList listdata = new ArrayList(); for (int i=0;i – user2699728 Jan 20 '14 at 10:40
this is wrong way, by this way you are saving whole jason string in arrayList element. – Vijju Jan 20 '14 at 10:43
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/45629/discussion-between-user2699728-and-jay) – user2699728 Jan 20 '14 at 10:43
your json array will not get sorted, list will sorted. – Vijju Jan 21 '14 at 06:17

Arrange the array depending on the order android?

2 Answers2