Find unique data from json using android

First, json is malformated:

{ "lastyear": [ { "order": "96 36 08", "year": "2015", "Text": "No" }, { "order": "03 59 03", "year": "2014", "Text": "No" }, { "order": "16 50 58", "year": "2014", "Text": "No" } ]}

To parse this array, you need implement like this

import org.json.*;
import java.util.ArrayList;

public class MyObject {

private ArrayList<Lastyear> lastyear;


public MyObject () {

}   

public MyObject (JSONObject json) {


    this.lastyear = new ArrayList<Lastyear>();
    JSONArray arrayLastyear = json.optJSONArray("lastyear");
    if (null != arrayLastyear) {
        int lastyearLength = arrayLastyear.length();
        for (int i = 0; i < lastyearLength; i++) {
            JSONObject item = arrayLastyear.optJSONObject(i);
            if (null != item) {
                this.lastyear.add(new Lastyear(item));
            }
        }
    }
    else {
        JSONObject item = json.optJSONObject("lastyear");
        if (null != item) {
            this.lastyear.add(new Lastyear(item));
        }
    }


}

public ArrayList<Lastyear> getLastyear() {
    return this.lastyear;
}

public void setLastyear(ArrayList<Lastyear> lastyear) {
    this.lastyear = lastyear;
}



}

And the sub-object:

import org.json.*;


public class Lastyear {

private String order;
private String year;
private String text;


public Lastyear () {

}   

public Lastyear (JSONObject json) {

    this.order = json.optString("order");
    this.year = json.optString("year");
    this.text = json.optString("Text");

}

public String getOrder() {
    return this.order;
}

public void setOrder(String order) {
    this.order = order;
}

public String getYear() {
    return this.year;
}

public void setYear(String year) {
    this.year = year;
}

public String getText() {
    return this.text;
}

public void setText(String text) {
    this.text = text;
}



}

How to use it:

MyObject object = new MyObject(new JSONObject("YOUR_JSON"));
//Verifiy if object.getLastyear != null
int sizeList = object.getLastyear().size;

for(int i = 0; i < sizeList;i++){
    LastYear lastYear = object.getLastyear().get(i)
    Log.e("App",lastYear.getYear);
}

To have only unique value, you can use :

private static String[] arrRemove(String[] strArray) {
    Set<String> set = new HashSet<String>();
    set.addAll((List<String>) Arrays.asList(strArray));
    return (String[]) set.toArray(new String[set.size()]);
} 

pls try this code

    private void readJson(JSONObject jobj) {
    ArrayList<String> list=new ArrayList<String>();
    JSONArray jsonArray = jobj.getJSONArray("lastyear");
    for (int i = 0; i < jsonArray.length(); i++) {
        JSONObject obj = jsonArray.getJSONObject(i);
        String year=obj.getString("year");
        if (!list.contains(year)) {
            list.add(year);
        }
    }
    System.out.println("FirstActivity.readJson()"+list);
}

parse the json into java and then use HashSet yearHashSet to store your years value.

traverse your array and then store it the yearHashSet.

In the end you will have only unique year values.