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how to get and display json array data from our auto generated pojo class?

I have searched all over the internet but i am not able to parse my json array from pojo class.Application is getting crashed again and again.Please can anyone tell me how to parse and display json array from a complex json response.This is my JSON response.
From this i want to parse my department name,description, product name and category list.
{ "departmentAndCategory": [
{
"departmentName": "Apparels",
"departmentDescription": "Apparels",
"storeId": null,
"categoryList": [],
"id": 1
},
{
"departmentName": "Footwear",
"departmentDescription": "footwear for men,women and kids",
"storeId": null,
"categoryList": [
{
"departmentId": 10,
"categoryName": "Footwear",
"categoryDescription": "Footwear for men,women and kids",
"parentCategoryId": null
},
{
"departmentId": 10,
"categoryName": "Vehicles",
"categoryDescription": "Two and Four wheelers",
"parentCategoryId": null
}
],
"id": 10
},
{
"departmentName": "Appliances",
"departmentDescription": "TV,Washing Machines,Refrigerators etc.",
"storeId": null,
"categoryList": [
{
"departmentId": 11,
"categoryName": "Appliances",
"categoryDescription": "Appliances for home like TV,Washing Machines,Refrigerators etc.",
"parentCategoryId": null
},
{
"departmentId": 11,
"categoryName": "Vehicles",
"categoryDescription": "Two and Four wheelers",
"parentCategoryId": null
}
],
"id": 11
},
{
"departmentName": "Electronics",
"departmentDescription": "Mobile Phones,Routers etc.",
"storeId": null,
"categoryList": [
{
"departmentId": 12,
"categoryName": "Electronics",
"categoryDescription": "Electrnocs for personal use like Mobile Phones,Routers etc.",
"parentCategoryId": null
}
],
"id": 12
},
{
"departmentName": "Home & Furniture",
"departmentDescription": "All your Home & Furniture needs",
"storeId": null,
"categoryList": [],
"id": 2
},
{
"departmentName": "test",
"departmentDescription": "test",
"storeId": null,
"categoryList": [],
"id": 14
},
{
"departmentName": "apparels",
"departmentDescription": "apparels",
"storeId": null,
"categoryList": [],
"id": 15
},
{
"departmentName": "Levi`s Tshirt",
"departmentDescription": "Levi`s Tshirt",
"storeId": null,
"categoryList": [],
"id": 16
}],"productsAndDeals": [ {
"imageName": null,
"smallImage": null,
"productName": "Levis T-shirt",
"productDescription": "A good fabric from levis",
"productPrice": 2000,
"productInStock": 7,
"productAvailability": "Product is available",
"title": "Clothes",
"dealList": [],
"id": 1
},
{
"imageName": null,
"smallImage": null,
"productName": "skin-fit",
"productDescription": "best blue jeans",
"productPrice": 1000,
"productInStock": 15,
"productAvailability": "Product is available",
"title": "Jeans",
"dealList": [
{
"dealImage": "dev.beacon.interrait.com/resources/deal-1.jpg",
"productsId": 2,
"categoryId": 1,
"expiryDate": null,
"discountPercentage": 60,
"discountAmount": 600,
"isActive": "False",
"dealNotes": null,
"dealName": "Massive discount on skin fit jeans",
"id": 1
}
],
"id": 2
},
{
"imageName": null,
"smallImage": null,
"productName": "bell-bottoms",
"productDescription": "best blue jeans",
"productPrice": 1200,
"productInStock": 15,
"productAvailability": "Product is available",
"title": "Jeans",
"dealList": [
{
"dealImage": "dev.beacon.interrait.com/resources/deal-1.jpg",
"productsId": 3,
"categoryId": 1,
"expiryDate": null,
"discountPercentage": 40,
"discountAmount": 480,
"isActive": "False",
"dealNotes": null,
"dealName": "Massive discount on bell bottoms",
"id": 2
}
],
"id": 3
},
{
"imageName": null,
"smallImage": null,
"productName": "curve-jeans",
"productDescription": "best blue jeans",
"productPrice": 1200,
"productInStock": 15,
"productAvailability": "Product is available",
"title": "Jeans",
"dealList": [
{
"dealImage": "dev.beacon.interrait.com/resources/deal-1.jpg",
"productsId": 4,
"categoryId": 1,
"expiryDate": null,
"discountPercentage": 50,
"discountAmount": 600,
"isActive": "False",
"dealNotes": null,
"dealName": "Massive discount on curve jeans",
"id": 3
}
],
"id": 4
},
{
"imageName": null,
"smallImage": null,
"productName": "Aman",
"productDescription": "",
"productPrice": 1000,
"productInStock": 12,
"productAvailability": "Product is available",
"title": "Tshirt",
"dealList": [],
"id": 6
},
{
"imageName": null,
"smallImage": null,
"productName": "T-shirts for Men",
"productDescription": "New T-shirt collection",
"productPrice": 599,
"productInStock": 0,
"productAvailability": "Product not in stock",
"title": "T-shirts",
"dealList": [],
"id": 7
},
{
"imageName": null,
"smallImage": null,
"productName": "abvgc",
"productDescription": "askkkdd",
"productPrice": null,
"productInStock": 1,
"productAvailability": "Product is available",
"title": "dddrr",
"dealList": [],
"id": 19
},
{
"imageName": null,
"smallImage": null,
"productName": "top",
"productDescription": "askkkdd",
"productPrice": null,
"productInStock": 1,
"productAvailability": "Product is available",
"title": "dddrr",
"dealList": [],
"id": 20
},
{
"imageName": null,
"smallImage": null,
"productName": "topsss",
"productDescription": "askkkdfffd",
"productPrice": null,
"productInStock": 1,
"productAvailability": "Product is available",
"title": "dddrr",
"dealList": [],
"id": 21
},
{
"imageName": null,
"smallImage": null,
"productName": "topsss",
"productDescription": "askkkdfffd",
"productPrice": null,
"productInStock": 1,
"productAvailability": "Product is available",
"title": "dddrr",
"dealList": [],
"id": 22
},
{
"imageName": null,
"smallImage": null,
"productName": "sample",
"productDescription": "sample",
"productPrice": null,
"productInStock": 10,
"productAvailability": "Product is available",
"title": "Product",
"dealList": [],
"id": 23
},
{
"imageName": null,
"smallImage": null,
"productName": "sample",
"productDescription": "sample",
"productPrice": null,
"productInStock": 10,
"productAvailability": "Product is available",
"title": "Product",
"dealList": [],
"id": 24
},
{
"imageName": null,
"smallImage": null,
"productName": "sample",
"productDescription": "sample",
"productPrice": null,
"productInStock": 10,
"productAvailability": "Product is available",
"title": "Product",
"dealList": [],
"id": 25
},
{
"imageName": null,
"smallImage": null,
"productName": "mobile",
"productDescription": "smartphones",
"productPrice": null,
"productInStock": 1,
"productAvailability": "Product is available",
"title": "dddrr",
"dealList": [],
"id": 30
},
{
"imageName": null,
"smallImage": null,
"productName": "Apples",
"productDescription": "fresh apples from farm",
"productPrice": 150,
"productInStock": 90,
"productAvailability": "Product is available",
"title": "Red apples",
"dealList": [],
"id": 31
},
{
"imageName": null,
"smallImage": null,
"productName": "slippers and jackets",
"productDescription": "Slip Ons",
"productPrice": 210,
"productInStock": 45,
"productAvailability": "Product is available",
"title": "Liberty slippes",
"dealList": [],
"id": 110
},
{
"imageName": null,
"smallImage": null,
"productName": "glucose",
"productDescription": "glucone D",
"productPrice": 60,
"productInStock": 123,
"productAvailability": "Product is available",
"title": "Glucose for health",
"dealList": [],
"id": 117
},
{
"imageName": null,
"smallImage": null,
"productName": "jackets",
"productDescription": "rugged jackets",
"productPrice": 210,
"productInStock": 45,
"productAvailability": "Product is available",
"title": "Liberty slippes",
"dealList": [],
"id": 121
},
{
"imageName": null,
"smallImage": null,
"productName": "Stationary",
"productDescription": "pens,pencil",
"productPrice": 10,
"productInStock": 100,
"productAvailability": "Product is available",
"title": "--",
"dealList": [],
"id": 127
},
{
"imageName": null,
"smallImage": null,
"productName": "bat",
"productDescription": "cricket bats",
"productPrice": 500,
"productInStock": 20,
"productAvailability": "Product is available",
"title": "games for kids",
"dealList": [],
"id": 128
},
{
"imageName": null,
"smallImage": null,
"productName": "ball",
"productDescription": "cricket bats",
"productPrice": 500,
"productInStock": 20,
"productAvailability": "Product is available",
"title": "games for kids",
"dealList": [],
"id": 130
},
{
"imageName": null,
"smallImage": null,
"productName": "sports",
"productDescription": "cricket bats",
"productPrice": 500,
"productInStock": 20,
"productAvailability": "Product is available",
"title": "games for kids",
"dealList": [],
"id": 131
},
{
"imageName": null,
"smallImage": null,
"productName": "garden",
"productDescription": "axe",
"productPrice": 500,
"productInStock": 20,
"productAvailability": "Product is available",
"title": "-",
"dealList": [],
"id": 132
}
]
}

Here you can use following classes to parse your Response:
Create Two classes:
1. DepartmentAndCategory
2. ProductsAndDeals
//DepartmentAndCategory class
public class DepartmentAndCategory {
private List<CategoryList> categoryList;
private String departmentDescription;
private String departmentName;
public DepartmentAndCategory(String departmentName,String departmentDescription,
List<CategoryList> categoryList){
this.departmentName = departmentName;
this.departmentDescription = departmentDescription;
this.categoryList = categoryList;
}
public List<CategoryList> getCategoryList() {
return categoryList;
}
public void setCategoryList(List<CategoryList> categoryList) {
this.categoryList = categoryList;
}
public String getDepartmentDescription ()
{
return departmentDescription;
}
public void setDepartmentDescription (String departmentDescription)
{
this.departmentDescription = departmentDescription;
}
public String getDepartmentName ()
{
return departmentName;
}
public void setDepartmentName (String departmentName)
{
this.departmentName = departmentName;
}
#Override
public String toString()
{
return "ClassPojo [ categoryList = "+categoryList+", departmentDescription = "+departmentDescription+", departmentName = "+departmentName+"]";
}
}
//ProductsAndDeals class
public class ProductsAndDeals {
private String productName;
public ProductsAndDeals(){}
public ProductsAndDeals(String productName){
this.productName = productName;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
#Override
public String toString()
{
return "ClassPojo [productName = "+productName+"]";
}
}
// Then main class to parse the response
public class MainActivity extends AppCompatActivity {
List<DepartmentAndCategory> departmentAndCategoryList = new ArrayList<>();
List<ProductsAndDeals> productsAndDealsList = new ArrayList<>();
private static final String TAG = "MainActivity";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int i=0;
//Pass your response String here
ParseResponse(Response.RESPONSE);
String[] departNameArray = new String[departmentAndCategoryList.size()];
//printing Department Name, Department Description and Category List
for (DepartmentAndCategory list : departmentAndCategoryList){
Log.e(TAG,"Departname : "+list.getDepartmentName());
Log.e(TAG,"DepartDesc :"+list.getDepartmentDescription());
departNameArray[i] = list.getDepartmentName();
i++;
for (CategoryList list1 : list.getCategoryList()){
Log.e(TAG,"departmentId "+list1.getDepartmentId());
Log.e(TAG,"categoryName "+list1.getCategoryName());
Log.e(TAG,"categoryDescription "+list1.getCategoryDescription());
Log.e(TAG,"parentCategoryId "+list1.getParentCategoryId());
}
}
//departName array
for (int j=0;j<departNameArray.length;j++){
Log.e(TAG,"DepartName : "+departNameArray[j]);
}
//printing Product Name
for (ProductsAndDeals dealsList : productsAndDealsList){
Log.e(TAG,"Product name : "+dealsList.getProductName());
}
}
private void ParseResponse(String response){
try {
JSONObject rootObj = new JSONObject(response);
JSONArray department = rootObj.optJSONArray("departmentAndCategory");
for (int i=0;i<department.length();i++){
List<CategoryList> mCategoryList = new ArrayList<>();
JSONObject departmentObj = department.getJSONObject(i);
String departName = departmentObj.getString("departmentName");
String departDesc = departmentObj.getString("departmentDescription");
JSONArray categoryArray = departmentObj.optJSONArray("categoryList");
for (int j=0;j<categoryArray.length();j++){
JSONObject categoryObj = categoryArray.getJSONObject(j);
String departId = categoryObj.getString("departmentId");
String categoryName = categoryObj.getString("categoryName");
String categoryDescription = categoryObj.getString("categoryDescription");
String parentCategoryId = categoryObj.getString("parentCategoryId");
CategoryList categoryList = new CategoryList(categoryName,categoryDescription,
departId,parentCategoryId);
mCategoryList.add(categoryList);
}
DepartmentAndCategory departmentAndCategory = new DepartmentAndCategory(
departName,departDesc,mCategoryList
);
departmentAndCategoryList.add(departmentAndCategory);
}
JSONArray product = rootObj.optJSONArray("productsAndDeals");
for (int i=0;i<product.length();i++){
JSONObject productObj = product.getJSONObject(i);
String productName = productObj.getString("productName");
ProductsAndDeals productsAndDeals = new ProductsAndDeals(productName);
productsAndDealsList.add(productsAndDeals);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}

Have spinner dependent on item selected on other spinner

I want to show the number of days depending on the month chosen. Like if month chosen is January show dates till 31 but if it is february show until 29. I saw and tried some solutions but they didn't work out for me.
Here's my SignUpActivity class:
public class SignupActivity extends AppCompatActivity {
EditText first;
EditText last;
TextView birth;
Spinner month;
Spinner date;
Spinner year;
EditText email;
EditText phone;
EditText username;
EditText password;
Button done;
String[] dayOptions = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31"
};
String[] dayOptions2 = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30"
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
first = (EditText) findViewById(R.id.firstName);
last = (EditText) findViewById(R.id.lastName);
birth = (TextView) findViewById(R.id.birthText);
month = (Spinner) findViewById(R.id.birthMonth);
date = (Spinner) findViewById(R.id.birthDate);
year = (Spinner) findViewById(R.id.birthYear);
email = (EditText) findViewById(R.id.email);
phone = (EditText) findViewById(R.id.phoneNumber);
username = (EditText) findViewById(R.id.usernameEdit);
password = (EditText) findViewById(R.id.passwordEdit);
done = (Button) findViewById(R.id.done);
// month dropdown
final Spinner monthDrop = (Spinner) findViewById(R.id.birthMonth);
String[] monthOptions = new String[]{
"January", "February", "March", "April", "June", "July", "August", "September", "October", "November", "December"
};
ArrayAdapter<String> monthAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, monthOptions);
monthDrop.setAdapter(monthAdapter);
// days dropdown
Spinner dateDrop = (Spinner) findViewById(R.id.birthDate);
String[] dayOptions = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, dayOptions);
dateDrop.setAdapter(adapter);
// year dropdown
Spinner yearDrop = (Spinner) findViewById(R.id.birthYear);
String[] yearOptions = new String[]{
"1990", "1991", "1992", "1993", "1994", "1995", "1996", "1997", "1998", "1999", "2000", "2001", "20012", "2003", "2004", "2005", "2006"
};
ArrayAdapter<String> yearAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, yearOptions);
yearDrop.setAdapter(yearAdapter);
// CharSequence[] dateOptions = new CharSequence[] {
// };
done.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (first.getText().toString().equals("") || last.getText().toString().equals("") ||
email.getText().toString().equals("") || phone.getText().toString().equals("") ||
username.getText().toString().equals("") || password.getText().toString().equals("") || first.getText().toString().startsWith(" ") ||
last.getText().toString().startsWith(" ") || email.getText().toString().startsWith(" ") || phone.getText().toString().startsWith(" ") ||
username.getText().toString().startsWith(" ") || password.getText().toString().startsWith(" ")) {
Toast.makeText(getApplicationContext(), "Please fill all blanks", Toast.LENGTH_SHORT).show();
} else {
Intent intent = new Intent(SignupActivity.this, MainActivity.class);
startActivity(intent);
Toast.makeText(getApplicationContext(), "You have been signed up as " + first.getText().toString() + " " + last.getText().toString() + " (" + username.getText().toString() + ")", Toast.LENGTH_SHORT).show();
}
}
});
}
Any help would be appreciated! Thanks in advance!
UPDATE: I tried #siva35's answer but then the date dropdown options are all gone. My code is:
month.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// int intPosition = position;
if(position == 0 || position == 2 || position == 4 || position == 5 || position == 7 || position == 9 ||position == 11) {
// Spinner date = (Spinner) findViewById(R.id.birthDate);
String[] dayOptions = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplication(), android.R.layout.simple_spinner_dropdown_item, dayOptions);
date.setAdapter(adapter);
} else if(position == 3 || position == 5 || position == 6 || position == 9 || position == 11 ) {
String[] dayOptions = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplication(), android.R.layout.simple_spinner_dropdown_item, dayOptions);
date.setAdapter(adapter);
} else if(position == 1) {
String[] dayOptions = new String[]{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplication(), android.R.layout.simple_spinner_dropdown_item, dayOptions);
date.setAdapter(adapter);
} else {
Toast.makeText(getApplicationContext(), "Not working", Toast.LENGTH_LONG).show();
}
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
Toast.makeText(getApplicationContext(), "Please select something", Toast.LENGTH_LONG).show();
}
});

use OnItemSelectedListener() method.
month.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// your code here to display date options
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
})
;

Thanks #siva35 for your answer! I got an answer to my own question. My code for it is:
month.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view,
int pos, long id) {
List<String> s = Arrays.asList(getResources().getStringArray(R.array.item_day));
if (pos == 0 || pos == 2 || pos == 4 || pos == 8 || pos == 9
|| pos == 11) {
ArrayAdapter<String> dayadapter = new ArrayAdapter<String>(SignupActivity.this, android.R.layout.simple_spinner_item,s);
date.setAdapter(dayadapter);
} else if (pos == 1) {
s = s.subList(0,28);
ArrayAdapter<String> dayadapter = new ArrayAdapter<String>(SignupActivity.this, android.R.layout.simple_spinner_item,s);
date.setAdapter(dayadapter);
} else {
s = s.subList(0,30);
ArrayAdapter<String> dayadapter = new ArrayAdapter<String>(SignupActivity.this, android.R.layout.simple_spinner_item,s);
date.setAdapter(dayadapter);
}
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
Toast.makeText(getApplicationContext(), "Please select something", Toast.LENGTH_SHORT).show();
}
});

How to parse Array of Objects in Android

I am parsing the following json response but there is some problem in parsing,the code I'm trying is not parsing and I am not getting any exception or response.
The code that I had applied to parse it is:
ArrayList<Model_BarcodeDetail> DownloadBarcode(String api_token) {
ArrayList<Model_BarcodeDetail> barcodeList = new ArrayList<Model_BarcodeDetail>();
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost(Utility.BASE_URL
+ "?q=webservice/barcode_list&token=" + api_token +"&page="+"1"
+ "&return=json");
String url = Utility.BASE_URL
+ "?q=webservice/barcode_list&token=" + api_token +"&page="+"1"
+ "&return=json";
System.out.println("======url::"+url);
String result = "";
ArrayList<Model_BarcodeDetail> group_list = null;
ArrayList<Model_BarcodeList_Child> child_list = null;
try {
group_list = new ArrayList<Model_BarcodeDetail>();
ResponseHandler<String> responseHandler = new BasicResponseHandler();
result = httpClient.execute(postRequest, responseHandler);
JSONObject root = new JSONObject(result);
JSONObject obj = root.getJSONObject("");
System.out.println("====objjjj: "+obj.toString());
JSONArray arraylist=obj.names();
for (int i = 0; i < arraylist.length(); i++) {
child_list = new ArrayList<Model_BarcodeList_Child>();
JSONObject jsonObj = arraylist.getJSONObject(i);
System.out.println("---json" + jsonObj);
Model_BarcodeDetail data = new Model_BarcodeDetail();
data.setReference((jsonObj.getString("ref")));
System.out.println("======refinprsing--"+data.getReference());
// data.setName((jsonObj.getString("name")));
// data.setDescription((jsonObj.getString("desc")));
// data.setPrice((jsonObj.getString("price")));
// data.setTotal(data.getPrice().trim());
// data.setFixedTotal(data.getPrice().trim());
JSONArray obj2 = jsonObj.getJSONArray("barcodes");
for (int j = 0; j < obj2.length(); j++) {
JSONObject json = obj2.getJSONObject(j);
System.out.println("---json" + json);
Model_BarcodeList_Child data2 = new Model_BarcodeList_Child();
data2.setBarcode((json.getString("barcode")));
System.out.println("=======barcodeinparsing: "+data2.getBarcode());
data2.setColor((json.getString("color")));
data2.setSize((json.getString("size")));
data2.setPrice(json.getString("price"));
data2.setStock(json.getString("stock"));
data2.setAlis_code(json.getString("alias_code"));
child_list.add(data2);
}
data.setChildItems(child_list);
group_list.add(data);
}
for (int k = 0; k < group_list.size(); k++) {
System.out.println("-----==data itemref "
+ group_list.get(k).getReference());
for (int y = 0; y < group_list.get(k).getChildItems().size(); y++) {
System.out.println("-----====data color "
+ group_list.get(k).getChildItems().get(y)
.getColor());
}
}
} catch (Exception e) {
Log.i("Exception in DownloadBarcodechanges method: ", e.getMessage());
return null;
}
return group_list;
}
Here is the json:
{
"000002": {
"ref": "000002",
"barcodes": [
{
"barcode": "000002014001",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "S",
"stock": "0"
},
{
"barcode": "000002014002",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "M",
"stock": "2"
},
{
"barcode": "000002014003",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "L",
"stock": "1"
},
{
"barcode": "000002014004",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "XL",
"stock": "0"
},
{
"barcode": "000002014005",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "XXL",
"stock": "1"
},
{
"barcode": "000002014006",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "13.50",
"size": "2XL",
"stock": "3"
},
{
"barcode": "000002014007",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "13.50",
"size": "3XL",
"stock": "5"
},
{
"barcode": "000002014008",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "13.50",
"size": "4XL",
"stock": "6"
},
{
"barcode": "000002014009",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "13.50",
"size": "5XL",
"stock": "5"
},
{
"barcode": "000002014010",
"path": null,
"alias_code": null,
"color": "GREY",
"price": "10.50",
"size": "6XL",
"stock": "2"
}
]
},
"000012": {
"ref": "000012",
"barcodes": [
{
"barcode": "000012030001",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "S",
"stock": "1"
},
{
"barcode": "000012030002",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "M",
"stock": "3"
},
{
"barcode": "000012030003",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "L",
"stock": "4"
},
{
"barcode": "000012030004",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "XL",
"stock": "2"
},
{
"barcode": "000012030005",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "XXL",
"stock": "0"
},
{
"barcode": "000012030006",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "2XL",
"stock": "0"
},
{
"barcode": "000012030007",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "3XL",
"stock": "0"
},
{
"barcode": "000012030008",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "4XL",
"stock": "0"
},
{
"barcode": "000012030009",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "5XL",
"stock": "0"
},
{
"barcode": "000012030010",
"path": null,
"alias_code": null,
"color": "BLUE",
"price": "19.99",
"size": "6XL",
"stock": "0"
}
]
},
"pager": {
"current_page": 1,
"start": 0,
"limit": 50,
"total": "354",
"pages": 8
}
}

According to your json Response do parsing like below
JSONObject root = new JSONObject(result);
JSONArray array = root.getJSONArray("array");
String boolean = root.getString("boolean");
String null= root.getString("null");
String number= root.getString("number");
String string = root.getString("string");
JSONArray array_1 = root.getJSONArray("object");
first check your result is not getting null ? please check log.

Based on the json provided change this:
JSONObject root = new JSONObject(result);
JSONObject obj = root.getJSONObject("");
System.out.println("====objjjj: "+obj.toString());
JSONArray arraylist=obj.names();
To this:
JSONObject root = new JSONObject(result);
JSONArray arraylist= root.names();
for (int i = 0; i < arraylist.length(); i++) {
child_list = new ArrayList<Model_BarcodeList_Child>();
JSONObject jsonObj = root.getJSONObject(arrayList.getString(i));
I would also add a check to see if the name equals pager, in that case continue;

Here is solution
JSONObject root = new JSONObject(result);
if(root != null){
Iterator iter = root.keys();
while (iter.hasNext()){
try {
String key = (String) iter.next();
JSONObject itemObject = root.getJSONObject(key);
} catch (JSONException e) {
}
}
}

java.lang.NullPointerException on using Retrofit v2 Library

I am using Retrofit v2 library compile 'com.squareup.retrofit:retrofit:2.0.0-beta2' for making network requests .While posting data to server,i am getting null response .I am sending the JSON data to server.
1.MyAPI.java
public interface MyAPI {
#GET("{roomID}")
Call<List<Message>>loadMessages(#Path("roomID") String roomID);
#POST("almabay_oauth/authorize")
Call<Example>login(#Body String str);
}
2.UserLogin.java
public class UserLogin {
#SerializedName("email")
String email;
#SerializedName("password")
String password;
public UserLogin(String email, String password) {
this.email = email;
this.password = password;
}
public String toString() {
return "UserLogin {email =" + email + ",password = " + password + "}";
}
}
3.MainActivity.java
Retrofit retrofit1 = new Retrofit.Builder()
.baseUrl("http://phpstack-11819-25991-62288.cloudwaysapps.com/")
.addConverterFactory(GsonConverterFactory.create())
.build();
MyAPI myPostApi = retrofit1.create(MyAPI.class);
UserLogin userLogin = new UserLogin("j#yahoo.com", "Admin123#");
Gson gson = new Gson();
String json = gson.toJson(userLogin);
Log.e("json",json);
Call<Example> call1 = myPostApi.login(json);
call1.enqueue(new Callback<Example>() {
#Override
public void onResponse(Response<Example> response, Retrofit retrofit) {
Log.e("Response", String.valueOf(response.body()));
Example example = response.body();
Detail detail = example.getDetail();
Log.e("Access Token", detail.getAccessToken());
}
#Override
public void onFailure(Throwable t) {
Log.e("Failure", String.valueOf(t));
}
});
This is the segment of code using Retrofit Library for Posting email ID and Password to server.Here u can see,I am converting the object containing emailID and password into JSON using GSON library and posting the JSON string to server.
4.Expected Response
{
"detail": {
"id": "249",
"user_id": "479",
"access_token": "TwxqCJvgYfNeh6AeEZvjHWpjJMtH9va22ItErYVqeIEvOeKsegLWcbgVYJD7fOai",
"added_on": "2015-10-17 16:39:55",
"updated_on": "2015-10-17 16:39:55",
"status": "1",
"success": true,
"userInfo": {
"userInfo": {
"timeline": {
"wall_user_id": "479"
},
"logged": true,
"user": {
"id": "479",
"birthday": "2016-01-24",
"comment_privacy": "everyone",
"confirm_followers": "1",
"current_city": "",
"follow_privacy": "everyone",
"gender": "male",
"hometown": null,
"message_privacy": "everyone",
"timeline_post_privacy": "a:1:{i:0;s:1:\"5\";}",
"feed_section": "1",
"post_privacy": "a:1:{i:0;s:1:\"5\";}",
"current_city_id": "",
"userSkills": "",
"birth": {
"date": "24",
"month": "01",
"year": "2016"
},
"about": "jhjjkk\nhjjhjkj\nhjj",
"active": "1",
"avatar_id": "397",
"cover_id": "403",
"cover_position": "35",
"email": "nishantkango#yahoo.co.in",
"email_verification_key": null,
"email_verified": "0",
"language": null,
"last_logged": "1453645993",
"name": "Nishant Kango",
"time": "0",
"timestamp": "2016-01-24 14:33:13",
"timezone": null,
"type": "user",
"username": null,
"verified": false,
"user_id": "479",
"first_name": "Nishant",
"middle_name": null,
"last_name": "Kango",
"dob": "2016-01-24",
"mobile": "8699022278",
"title": null,
"marital_status": "",
"childrens": "0",
"hobbies": "Travelling",
"interests": "Technology",
"feed_back": null,
"status": "approved",
"profile_pic": null,
"date_created": "2014-10-29 00:00:00",
"date_modified": "2016-01-24 14:28:24",
"activation_code": null,
"social_login_type": "facebook",
"facebook_id": "10205077190793111",
"linked_in_id": null,
"google_id": null,
"employment_status": null,
"is_deleted": "0",
"website": "http://www.nishantkango.com",
"reference_institute": "",
"industry": "0",
"proffesion_type": "",
"url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/user/timeline/e6b34e9a0311a7f829e09d2d7c4b313e",
"cover": {
"id": "403",
"active": "1",
"album_id": "0",
"extension": "jpg",
"name": "IMG_3686.JPG",
"post_id": "0",
"temp": "0",
"timeline_id": "0",
"type": "photo",
"url": "common/marvel/photos/2015/09/ofRL7_403_bbf94b34eb32268ada57a3be5062fe7d",
"complete_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/photos/2015/09/ofRL7_403_bbf94b34eb32268ada57a3be5062fe7d.jpg",
"post_url": "/index.php?tab1=story&id=0"
},
"actual_cover_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/photos/2015/09/ofRL7_403_bbf94b34eb32268ada57a3be5062fe7d.jpg",
"cover_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/photos/2015/09/ofRL7_403_bbf94b34eb32268ada57a3be5062fe7d_cover.jpg",
"avatar": {
"id": "397",
"active": "1",
"album_id": "0",
"extension": "jpg",
"name": "IMG_3734.JPG",
"post_id": "0",
"temp": "0",
"timeline_id": "0",
"type": "photo",
"url": "common/marvel/photos/2015/09/2jY3t_397_e46de7e1bcaaced9a54f1e9d0d2f800d",
"complete_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/photos/2015/09/2jY3t_397_e46de7e1bcaaced9a54f1e9d0d2f800d.jpg",
"post_url": "/index.php?tab1=story&id=0"
},
"thumbnail_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/images/default-male-avatar.png",
"avatar_url": "http://phpstack-11819-25991-62288.cloudwaysapps.com/common/marvel/images/default-male-avatar.png",
"online": false
}
},
"totalRecords": "0",
"timelineJobInfo": false,
"privacyArray": [{
"privacy_option_id": "1",
"privacy_option_name": "Only Me"
}, {
"privacy_option_id": "2",
"privacy_option_name": "Friends"
}, {
"privacy_option_id": "3",
"privacy_option_name": "Mentors"
}, {
"privacy_option_id": "4",
"privacy_option_name": "Mentees"
}, {
"privacy_option_id": "5",
"privacy_option_name": "Everyone"
}],
"educationInfo": [{
"user_qualification_id": "35",
"user_id": "479",
"institute_name": "G.S.S.SCHOOL.BHOTA",
"qualification_type": "high school",
"from_month": null,
"to_month": null,
"from_year": "0",
"to_year": "2004",
"other_qualification_type_description": "",
"field_of_study": "",
"date_created": "2015-03-14 16:07:34",
"date_modified": "2015-03-30 12:07:46",
"currently_studing_here": null,
"program_id": null,
"institute_id": "104",
"logo": ""
}, {
"user_qualification_id": "36",
"user_id": "479",
"institute_name": "Himachal Pradesh University",
"qualification_type": "bachelors degree",
"from_month": null,
"to_month": null,
"from_year": null,
"to_year": "2011",
"other_qualification_type_description": null,
"field_of_study": null,
"date_created": "2015-03-14 16:07:35",
"date_modified": "2015-03-14 16:07:35",
"currently_studing_here": null,
"program_id": null,
"institute_id": "105",
"logo": ""
}, {
"user_qualification_id": "69",
"user_id": "479",
"institute_name": "Bhavan Vidyalaya",
"qualification_type": "secondary school",
"from_month": null,
"to_month": null,
"from_year": "2011",
"to_year": "2015",
"other_qualification_type_description": "",
"field_of_study": "",
"date_created": "2015-06-16 14:36:42",
"date_modified": "2015-06-16 14:34:40",
"currently_studing_here": null,
"program_id": null,
"institute_id": "51",
"logo": "1432290512HbMWOd18Do.jpg"
}, {
"user_qualification_id": "70",
"user_id": "479",
"institute_name": "D.A.V College, Chandigarh",
"qualification_type": "secondary school",
"from_month": null,
"to_month": null,
"from_year": "0",
"to_year": "2015",
"other_qualification_type_description": "",
"field_of_study": "",
"date_created": "2015-06-25 18:39:21",
"date_modified": "2015-07-02 11:50:57",
"currently_studing_here": null,
"program_id": null,
"institute_id": "65",
"logo": "1427433797f9zgcZJE5Y.jpg"
}],
"professionalInfo": [{
"user_profession_id": "100",
"user_id": "479",
"industry": null,
"organisation": "VebificTechnologies",
"designation": "CTO",
"city": "Chandigarh, India",
"month_from": "1",
"month_to": "3",
"year_from": "2015",
"year_to": "2015",
"profession_type": null,
"job_profile": "",
"date_created": "2015-03-23 10:50:35",
"date_modified": "2016-01-16 10:38:41",
"org_type": null,
"currently_working_here": null,
"functional_area": null,
"on_level": null,
"work_meta": null,
"migrated": "1"
}, {
"user_profession_id": "110",
"user_id": "479",
"industry": null,
"organisation": "Microsoft",
"designation": "Software Developer",
"city": "Chandigarh, India",
"month_from": "1",
"month_to": "3",
"year_from": "2015",
"year_to": "2015",
"profession_type": null,
"job_profile": "",
"date_created": "2015-03-30 16:37:28",
"date_modified": "2016-01-16 10:39:30",
"org_type": null,
"currently_working_here": null,
"functional_area": null,
"on_level": null,
"work_meta": null,
"migrated": "1"
}, {
"user_profession_id": "83",
"user_id": "479",
"industry": null,
"organisation": "Intelegain Technology Pvt. Ltd",
"designation": "Sr. Programmer Analyst",
"city": "Chandigarh",
"month_from": "12",
"month_to": "11",
"year_from": "2011",
"year_to": "2014",
"profession_type": null,
"job_profile": "Managing team and projects",
"date_created": "2014-11-29 16:52:27",
"date_modified": "2014-11-29 16:52:27",
"org_type": null,
"currently_working_here": null,
"functional_area": null,
"on_level": null,
"work_meta": null,
"migrated": "0"
}, {
"user_profession_id": "93",
"user_id": "479",
"industry": null,
"organisation": "Freelance",
"designation": "Web Developer",
"city": null,
"month_from": "1",
"month_to": "3",
"year_from": "2011",
"year_to": "2015",
"profession_type": null,
"job_profile": null,
"date_created": "2015-03-14 16:07:35",
"date_modified": "2016-01-16 10:38:41",
"org_type": null,
"currently_working_here": null,
"functional_area": null,
"on_level": null,
"work_meta": null,
"migrated": "1"
}, {
"user_profession_id": "96",
"user_id": "479",
"industry": null,
"organisation": "Freelance",
"designation": "Web Developer",
"city": null,
"month_from": "1",
"month_to": "3",
"year_from": "2011",
"year_to": "2015",
"profession_type": null,
"job_profile": null,
"date_created": "2015-03-19 18:41:46",
"date_modified": "2016-01-16 10:38:41",
"org_type": null,
"currently_working_here": null,
"functional_area": null,
"on_level": null,
"work_meta": null,
"migrated": "1"
}],
"friendWithYou": false,
"mutualFriends": null,
"photos": null
}
},
"statusCode": "200"
}
I have written POJO for the response.
5.Example.java
public class EducationInfo {
#SerializedName("user_qualification_id")
#Expose
private String userQualificationId;
#SerializedName("user_id")
#Expose
private String userId;
#SerializedName("institute_name")
#Expose
private String instituteName;
#SerializedName("qualification_type")
#Expose
private String qualificationType;
#SerializedName("from_month")
#Expose
private Object fromMonth;
#SerializedName("to_month")
#Expose
private Object toMonth;
#SerializedName("from_year")
#Expose
private String fromYear;
#SerializedName("to_year")
#Expose
private String toYear;
#SerializedName("other_qualification_type_description")
#Expose
private String otherQualificationTypeDescription;
#SerializedName("field_of_study")
#Expose
private String fieldOfStudy;
#SerializedName("date_created")
#Expose
private String dateCreated;
#SerializedName("date_modified")
#Expose
private String dateModified;
#SerializedName("currently_studing_here")
#Expose
private Object currentlyStudingHere;
#SerializedName("program_id")
#Expose
private Object programId;
#SerializedName("institute_id")
#Expose
private String instituteId;
#SerializedName("logo")
#Expose
private String logo;
/**
*
* #return
* The userQualificationId
*/
public String getUserQualificationId() {
return userQualificationId;
}
/**
*
* #param userQualificationId
* The user_qualification_id
*/
public void setUserQualificationId(String userQualificationId) {
this.userQualificationId = userQualificationId;
}
/**
*
* #return
* The userId
*/
public String getUserId() {
return userId;
}
/**
*
* #param userId
* The user_id
*/
public void setUserId(String userId) {
this.userId = userId;
}
/**
*
* #return
* The instituteName
*/
public String getInstituteName() {
return instituteName;
}
/**
*
* #param instituteName
* The institute_name
*/
public void setInstituteName(String instituteName) {
this.instituteName = instituteName;
}
/**
*
* #return
* The qualificationType
*/
public String getQualificationType() {
return qualificationType;
}
/**
*
* #param qualificationType
* The qualification_type
*/
public void setQualificationType(String qualificationType) {
this.qualificationType = qualificationType;
}
/**
*
* #return
* The fromMonth
*/
public Object getFromMonth() {
return fromMonth;
}
/**
*
* #param fromMonth
* The from_month
*/
public void setFromMonth(Object fromMonth) {
this.fromMonth = fromMonth;
}
/**
*
* #return
* The toMonth
*/
public Object getToMonth() {
return toMonth;
}
/**
*
* #param toMonth
* The to_month
*/
public void setToMonth(Object toMonth) {
this.toMonth = toMonth;
}
/**
*
* #return
* The fromYear
*/
public String getFromYear() {
return fromYear;
}
/**
*
* #param fromYear
* The from_year
*/
public void setFromYear(String fromYear) {
this.fromYear = fromYear;
}
/**
*
* #return
* The toYear
*/
public String getToYear() {
return toYear;
}
/**
*
* #param toYear
* The to_year
*/
public void setToYear(String toYear) {
this.toYear = toYear;
}
/**
*
* #return
* The otherQualificationTypeDescription
*/
public String getOtherQualificationTypeDescription() {
return otherQualificationTypeDescription;
}
/**
*
* #param otherQualificationTypeDescription
* The other_qualification_type_description
*/
public void setOtherQualificationTypeDescription(String otherQualificationTypeDescription) {
this.otherQualificationTypeDescription = otherQualificationTypeDescription;
}
/**
*
* #return
* The fieldOfStudy
*/
public String getFieldOfStudy() {
return fieldOfStudy;
}
/**
*
* #param fieldOfStudy
* The field_of_study
*/
public void setFieldOfStudy(String fieldOfStudy) {
this.fieldOfStudy = fieldOfStudy;
}
/**
*
* #return
* The dateCreated
*/
public String getDateCreated() {
return dateCreated;
}
/**
*
* #param dateCreated
* The date_created
*/
public void setDateCreated(String dateCreated) {
this.dateCreated = dateCreated;
}
/**
*
* #return
* The dateModified
*/
public String getDateModified() {
return dateModified;
}
/**
*
* #param dateModified
* The date_modified
*/
public void setDateModified(String dateModified) {
this.dateModified = dateModified;
}
/**
*
* #return
* The currentlyStudingHere
*/
public Object getCurrentlyStudingHere() {
return currentlyStudingHere;
}
/**
*
* #param currentlyStudingHere
* The currently_studing_here
*/
public void setCurrentlyStudingHere(Object currentlyStudingHere) {
this.currentlyStudingHere = currentlyStudingHere;
}
/**
*
* #return
* The programId
*/
public Object getProgramId() {
return programId;
}
/**
*
* #param programId
* The program_id
*/
public void setProgramId(Object programId) {
this.programId = programId;
}
/**
*
* #return
* The instituteId
*/
public String getInstituteId() {
return instituteId;
}
/**
*
* #param instituteId
* The institute_id
*/
public void setInstituteId(String instituteId) {
this.instituteId = instituteId;
}
/**
*
* #return
* The logo
*/
public String getLogo() {
return logo;
}
/**
*
* #param logo
* The logo
*/
public void setLogo(String logo) {
this.logo = logo;
}
}
I dont know where is the the issue.Am i using the correct way to POST JSON String ?I am getting Null response here.Plz help me to fix the issue.

Android: org.json.jsonobject values

I'am fetching the data from the server and storing in my android application, but i get exception.
error message: JSONArray cannot be converted to JSONObject.
#Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
if (result) {
Log.d("response", response.toString());
JSONArray discoverArray = (JSONArray) response.optJSONArray("users");
ArrayList<Discover> discovers = new ArrayList<Discover>();
if (discoverArray != null) {
for (int i = 0; i < discoverArray.length(); i++) {
JSONObject discoverObj = (JSONObject) discoverArray.opt(i);
if (discoverObj != null) {
Discover discover = new Discover();
discover.setAge(discoverObj.optString("age"));
discover.setMutualFriend(discoverObj.optInt("mutualFriend"));
discover.setMutualInterest(discoverObj.optInt("mutualInterest"));
discover.setName(discoverObj.optString("name"));
discovers.add(discover);
}
}
}
Logcat:
org.json.JSONException: Value [{"locationCity":null,"fbCityName":"Százhalombatta","fbCityId":"105979396100282","lastUpdate":"2014-03-05 17:31:13","locale":"hu-HU","locationLongitude":"20","pictures":[{"order":1,"id":false,"url":"https://graph.facebook.com/100001290188792/picture/?width=600&height=600&type=square"}],"lastname":"Ilona","androidPushType":null,"bounce":"0","androidPush":null,"id":"20916","subscribe":"1","locationLatitude":"47","facebook":"100001290188792","name":"Karácsony Ilona","gender":"2","dateRegister":"2013-10-05 22:31:31","orientation":"1","hash":"37e8fd18cb29583879616c47ab87072e","iphonePush":null,"locationRadius":"30","fbLongitude":"18.9333","firstname":"Karácsony","lastLogin":"2014-01-15 10:13:35","email":"cusi28#freemail.hu","iphonePushType":null,"dob":null,"active":"1","fbLatitude":"47.3333","fbAccessToken":"CAAFiaFvj7I0BABZBZBXVwfs6tBSjoIWL133Ehkuzv0y39KziqvfBYYsPs1ep0mb8nHwO6OXw82qwQOusyuO9R5Aq7QcvY4I3xWh0eoxRkp40VZB3ZBITu2Mq5ZAl0RtWLwIdqtIIKiZA7Rh6WJz2cJRvKkHFm9TvzXTrUsVW6HvqeuYpL1q3sk"},{"locationCity":null,"fbCityName":null,"fbCityId":null,"lastUpdate":"2013-11-24 22:33:01","locale":"hu-HU","locationLongitude":"20","pictures":[{"order":1,"id":false,"url":"https://graph.facebook.com/100001346586576/picture/?width=600&height=600&type=square"}],"lastname":"Bognár","androidPushType":null,"bounce":"0","androidPush":null,"id":"20954","subscribe":"1","locationLatitude":"47","facebook":"100001346586576","name":"Szaszy Bognár","gender":"2","dateRegister":"2013-10-06 22:18:14","orientation":"1","hash":"f18cad1db764dd7fe394ac4e4707b84a","iphonePush":null,"locationRadius":"30","fbLongitude":null,"firstname":"Szaszy","lastLogin":"2013-10-06 22:18:14","email":null,"iphonePushType":null,"dob":null,"active":"1","fbLatitude":null,"fbAccessToken":"CAAFiaFvj7I0BAHohcV2ZCbUZC8sx1vhv2ylYBehttW22kmyLz2YdVpoZAabxSQPWPzQwUZAyCQCDRTMxPZCH2buyOkxFrcX7cefZBMUD2rbFZAbLbQZA6gXnHJ4zWJsroh1mKOlnfRjoNkyXTpG4csLzfTfLLydUYHtNKOpAiQa1VLkrtrKFv1dz"},{"locationCity":"2231932","fbCityName":null,"fbCityId":null,"lastUpdate":"2013-11-25 22:33:01","locale":"hu-HU","locationLongitude":"19.08333300000","pictures":[{"order":1,"id":false,"url":"https://graph.facebook.com/559072666/picture/?width=600&height=600&type=square"}],"lastname":"Kerekes","androidPushType":null,"bounce":"0","androidPush":null,"id":"20968","subscribe":"1","locationLatitude":"47.50000000000","facebook":"559072666","name":"Zsofia Kerekes","gender":"2","dateRegister":"2013-10-07 10:47:34","orientation":"1","hash":"4d9eb81eca14f5f362c2813c0c2fe3f3","iphonePush":null,"locationRadius":"10","fbLongitude":null,"firstname":"Zsofia","lastLogin":"2013-10-07 10:47:34","email":"zs.kerekes.13#gmail.com","iphonePushType":null,"dob":null,"active":"1","fbLatitude":null,"fbAccessToken":"CAAFiaFvj7I0BAKCdRjhUiNZBDkWcovRfoEJnKo2pkoYDpnW13PqptEr9FoIeJGLRD1f6dItf9sGhPcReWDdXY3qpEZCPFTp3YK6BOPaDzlY6834PFALImlFOF6uPQBnD2tIC0DYtCZAB1Jvr7jCD6at4MDIi9IHWiEUklj5cFLSzeirYZAhS0JcY7GOi9T0ZD"}] of type org.json.JSONArray cannot be converted to JSONObject
[
{
"active": "1",
"androidPush": null,
"androidPushType": null,
"bounce": "0",
"dateRegister": "2013-10-05 22:31:31",
"dob": null,
"email": "dwdwdwd",
"facebook": "wsda",
"fbAccessToken": "wdwdw",
"fbCityId": "105979396100282",
"fbCityName": "Sz\u00e1zhalombatta",
"fbLatitude": "47.3333",
"fbLongitude": "18.9333",
"firstname": "Kar\u00e1csony",
"gender": "2",
"hash": "wwwwwwwwww",
"id": "20916",
"iphonePush": null,
"iphonePushType": null,
"lastLogin": "2014-01-15 10:13:35",
"lastUpdate": "2014-03-05 17:31:13",
"lastname": "dd",
"locale": "hu-HU",
"locationCity": null,
"locationLatitude": "47",
"locationLongitude": "20",
"locationRadius": "30",
"orientation": "1",
"pictures": [
{
"id": false,
"order": 1,
"url": "dddd"
}
],
"subscribe": "1"
},
{
"active": "1",
"androidPush": null,
"androidPushType": null,
"bounce": "0",
"dateRegister": "2013-10-06 22:18:14",
"dob": null,
"email": null,
"facebook": "ddddd",
"fbAccessToken": "dddwdwdw",
"fbCityId": null,
"fbCityName": null,
"fbLatitude": null,
"fbLongitude": null,
"firstname": "dwdwdw",
"gender": "2",
"hash": "ddwdw",
"id": "20954",
"iphonePush": null,
"iphonePushType": null,
"lastLogin": "2013-10-06 22:18:14",
"lastUpdate": "2013-11-24 22:33:01",
"lastname": "wdwdw",
"locale": "hu-HU",
"locationCity": null,
"locationLatitude": "47",
"locationLongitude": "20",
"locationRadius": "30",
"name": "ddddr",
"orientation": "1",
"pictures": [
{
"id": false,
"order": 1,
"url": "wwwww"
}
],
"subscribe": "1"
},
{
"active": "1",
"androidPush": null,
"androidPushType": null,
"bounce": "0",
"dateRegister": "2013-10-07 10:47:34",
"dob": null,
"email": "asdasd",
"facebook": "ddddd",
"fbAccessToken": "dddd",
"fbCityId": null,
"fbCityName": null,
"fbLatitude": null,
"fbLongitude": null,
"firstname": "ddwwda",
"gender": "2",
"hash": "dwwdwdwdw",
"id": "20968",
"iphonePush": null,
"iphonePushType": null,
"lastLogin": "2013-10-07 10:47:34",
"lastUpdate": "2013-11-25 22:33:01",
"lastname": "ddddd",
"locale": "hu-HU",
"locationCity": "2231932",
"locationLatitude": "47.50000000000",
"locationLongitude": "19.08333300000",
"locationRadius": "10",
"name": "wwwwwww",
"orientation": "1",
"pictures": [
{
"id": false,
"order": 1,
"url": "photo"
}
],
"subscribe": "1"
}
]
Thank you very much for your help.

Replace
JSONObject discoverObj = (JSONObject) discoverArray.opt(i);
with
JSONObject discoverObj = discoverArray.getJSONObject(i);
Review the below code
#Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
if (result) {
Log.d("response", response.toString());
JSONArray discoverArray = (JSONArray) response.optJSONArray("users");
ArrayList<Discover> discovers = new ArrayList<Discover>();
if (discoverArray != null) {
for (int i = 0; i < discoverArray.length(); i++) {
JSONObject discoverObj = discoverArray.getJSONObject(i);
if (discoverObj != null) {
Discover discover = new Discover();
discover.setAge(discoverObj.optString("age"));
discover.setMutualFriend(discoverObj.optInt("mutualFriend"));
discover.setMutualInterest(discoverObj.optInt("mutualInterest"));
discover.setName(discoverObj.optString("name"));
discovers.add(discover);
}
}
}