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How to set JSON Array values to seter class in Android Studio with volley

I'm trying to display my row tables on the database in my ListView , However I dont know how to convert JSONObject to JSONArray and set it to my setter class. I get my JSON through Volley String Request
I have the JSON output like this :
{
"error": false,
"message": "Status Fetched",
"status": [
{
"OrderCode": "5x2azu",
"GuestName": "Try",
"ProductName": "Mie Ayam Super Jumbo Komplit",
"ProductType": "Kuah",
"NoTable": 4,
"Status": "Disiapkan",
"TotalPrice": "58000"
},
{
"OrderCode": "etent3",
"GuestName": "Try",
"ProductName": "Nasi Soto Daging Sapi",
"ProductType": "Soto",
"NoTable": 4,
"Status": "Disiapkan",
"TotalPrice": "27000"
},
{
"OrderCode": "ro1eyx",
"GuestName": "Try",
"ProductName": "Mie Ayam Original",
"ProductType": "Kuah",
"NoTable": 4,
"Status": "Disiapkan",
"TotalPrice": "23000"
}
]
}
and here is my String Request :
public void StringRequest() {
StringRequest stringRequest = new StringRequest(Request.Method.POST, URLs.STATUS,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject obj = new JSONObject(response);
Toast.makeText(getContext(), response, Toast.LENGTH_SHORT).show();
//if no error in response
if (!obj.getBoolean("error")) {
Toast.makeText(getContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
//getting Status from response
JSONObject statusJson = obj.getJSONObject("status");
Status status = new Status(
statusJson.getString("OrderCode"),
statusJson.getString("GuestName"),
statusJson.getString("ProductName"),
statusJson.getString("ProductType"),
statusJson.getString("NoTable"),
statusJson.getString("Status"),
statusJson.getString("TotalPrice")
);
} else {
Toast.makeText(getContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getContext(),error.getMessage(),Toast.LENGTH_SHORT).show();
}
}) {
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
params.put("tablecode",TableCode);
return params;
}
};
VolleySingleton.getInstance(getContext()).addToRequestQueue(stringRequest);
}
I dont know how to convert it from JSONObject to JSONArray
here is my Setter and getter class
package com.example.pesanpalgading20.Getter.Status;
import java.util.ArrayList;
public class Status {
private String OrderCode,Name,FoodName,TypeFood,NoTable,Status,TotalPrice;
public Status(){
}
public Status(String orderCode, String name, String foodName, String typeFood, String noTable, String status, String totalPrice) {
OrderCode = orderCode;
Name = name;
FoodName = foodName;
TypeFood = typeFood;
NoTable = noTable;
Status = status;
TotalPrice = totalPrice;
}
public String getOrderCode() {
return OrderCode;
}
public void setOrderCode(String orderCode) {
OrderCode = orderCode;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getFoodName() {
return FoodName;
}
public void setFoodName(String foodName) {
FoodName = foodName;
}
public String getTypeFood() {
return TypeFood;
}
public void setTypeFood(String typeFood) {
TypeFood = typeFood;
}
public String getNoTable() {
return NoTable;
}
public void setNoTable(String noTable) {
NoTable = noTable;
}
public String getStatus() {
return Status;
}
public void setStatus(String status) {
Status = status;
}
public String getTotalPrice() {
return TotalPrice;
}
public void setTotalPrice(String totalPrice) {
TotalPrice = totalPrice;
}
}
so how do I set the value of the each JSON to SetterandGetter class ?

try {
JSONObject obj = new JSONObject(response);
//if no error in response
if (!obj.getBoolean("error")) {
//getting Status from response
JSONArray statusJson = obj.getJSONArray("status");
for (int i = 0; i < statusJson.length(); i++) {
Status status = new Status(
statusJson.getJSONObject(i).getString("OrderCode"),
statusJson.getJSONObject(i).getString("GuestName"),
statusJson.getJSONObject(i).getString("ProductName"),
statusJson.getJSONObject(i).getString("ProductType"),
statusJson.getJSONObject(i).getString("NoTable"),
statusJson.getJSONObject(i).getString("Status"),
statusJson.getJSONObject(i).getString("TotalPrice")
);
// Add Status In your Array list and enjoy
}
} else {
Toast.makeText(getContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}

You can use Gson library and convert your json to a model class
To do it first you have to add gson as a dependancy
implementation "com.google.code.gson:gson:2.8.6"
And then since your status in json is array use it like this
JSONArray status = obj.getJSONArray("status");
//Code to convert json array to arraylist of object
Arraylist<Status> arraylist = Gson().fromJson(
status.toString(),
new TypeToken<ArrayList<Status>>(){}.getType()
)
Above code will store your json array status to arraylist variable

so the gettin JSON array is completed but it still display one list from the array this is the code
public void StringRequest() {
StringRequest stringRequest = new StringRequest(Request.Method.POST, URLs.STATUS,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject obj = new JSONObject(response);
Toast.makeText(getContext(), response, Toast.LENGTH_SHORT).show();
//if no error in response
if (!obj.getBoolean("error")) {
Toast.makeText(getContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
//getting Status from response
JSONArray statusJson = obj.getJSONArray("status");
for (int i = 0; i < statusJson.length(); i++) {
Status status = new Status(
statusJson.getJSONObject(i).getString("OrderCode"),
statusJson.getJSONObject(i).getString("GuestName"),
statusJson.getJSONObject(i).getString("ProductName"),
statusJson.getJSONObject(i).getString("ProductType"),
statusJson.getJSONObject(i).getString("NoTable"),
statusJson.getJSONObject(i).getString("Status"),
statusJson.getJSONObject(i).getString("TotalPrice")
);
ArrayList<Status> statusList = new ArrayList<Status>();
statusList.add(status);
statusAdapter = new StatusAdapter(getActivity(),statusList);
StatusListView.setAdapter(statusAdapter);
}
} else {
Toast.makeText(getContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getContext(),error.getMessage(),Toast.LENGTH_SHORT).show();
}
}) {
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
params.put("tablecode",TableCode);
return params;
}
};
VolleySingleton.getInstance(getContext()).addToRequestQueue(stringRequest);
}
I dont know where to put the increment in the setting adapter in
statusList.add(status);
edit : It solved! Thanks to #Pratik Fagadiya
I put the setting adapter outside of the loop and it worked and added more than 1 list

How i can can parse JSON Object ? just a simple object I am new [duplicate]

This question already has answers here:
How do I parse JSON in Android? [duplicate]
(3 answers)
Closed 4 years ago.
I want to get string values on this one
{"response":"success","Message":"Product Created Successfully"}
final JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONObject JO = response.getJSONObject();
String respond = JO.getString("response");
String message = JO.getString("Message");
Toast.makeText(MainActivity.this, respon + message,Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});

you must write this code in your try{...} block
String respond = response.getString("response");
String message = response.getString("Message");
Toast.makeText(MainActivity.this, respond + message,Toast.LENGTH_SHORT).show();

As a new programmer I recommend you:
A. Read some how you work with Jason.
http://www.vogella.com/tutorials/AndroidJSON/article.html
B. Use the Jason library to make it easy for you down the road.
I'll give you an example of the right use for your needs now.
Build a class that fits your json:
public class MyObject {
private String response;
private String Message;
public MyObject() {
}
public String getResponse() {
return response;
}
public void setResponse(String response) {
this.response = response;
}
public String getMessage() {
return Message;
}
public void setMessage(String message) {
Message = message;
}
}
Add Gson library to your project:
dependencies {
implementation 'com.google.code.gson:gson:2.8.5'
}
Sync your project and now you can cast your json easily to class object:
String json = "{response:success,Message\":Product Created Successfully}";
MyObject myObject = new Gson().fromJson(json, MyObject.class);
String a = myObject.getResponse();
String b = myObject.getMessage();

Error handling using volley in android

I want to print my Error from onErrorResponse using volley in android, i want to print them separately in different textview.
my error from onErrorResponse
{
"message": "422 Unprocessable Entity",
"error": {
"username": [
"The username has already been taken."
],
"email": [
"The email has already been taken."
]
},
"status_code": 422
}
so i want to print them separately,
i mean The username has already been taken. in one textview and The email has already been taken. in 2nd textview. thank
My Code:
public void postData(JSONObject jsonObject) {
String url = "http://www.xxxxxxxx.com/api/v1/auth/register";
String REQUEST_TAG = "volley_key";
JsonObjectRequest jsonObjectReq = new JsonObjectRequest(Request.Method.POST, url, jsonObject,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
verifyResponse(response);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
NetworkResponse networkResponse = error.networkResponse;
if (networkResponse != null && networkResponse.data != null) {
String errorStr = new String(networkResponse.data);
try {
JSONObject jObj = new JSONObject(errorStr);
JSONObject objError = jObj.getJSONObject("error");
JSONArray emailArray = objError.getJSONArray("email");
if (emailArray != null) {
String emailMessage = String.valueOf(emailArray.get(0));
Toast.makeText(getApplication(), emailMessage, Toast.LENGTH_LONG).show();
}
JSONArray usernameArray = objError.getJSONArray("username");
if (usernameArray != null) {
String usernameMessage = String.valueOf(emailArray.get(0));
Toast.makeText(getApplication(), usernameMessage, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}){
#Override
protected VolleyError parseNetworkError(VolleyError volleyError) {
if (volleyError.networkResponse != null && volleyError.networkResponse.data != null) {
VolleyError error = new VolleyError(new String(volleyError.networkResponse.data));
volleyError = error;
}
return volleyError;
}
}; VolleySingleton.getInstance(getApplicationContext()).addToRequestQueue(jsonObjectReq, REQUEST_TAG);
}

Add there ErrorModel.class and Error class into java folder.
package co.exmaple;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class ErrorModel {
#SerializedName("message")
#Expose
private String message;
#SerializedName("error")
#Expose
private Error error;
#SerializedName("status_code")
#Expose
private Integer statusCode;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Error getError() {
return error;
}
public void setError(Error error) {
this.error = error;
}
public Integer getStatusCode() {
return statusCode;
}
public void setStatusCode(Integer statusCode) {
this.statusCode = statusCode;
}
}
Erro.class
package co.exmaple;
import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Error {
#SerializedName("name")
#Expose
private List<String> name = null;
#SerializedName("username")
#Expose
private List<String> username = null;
#SerializedName("email")
#Expose
private List<String> email = null;
public List<String> getName() {
return name;
}
public void setName(List<String> name) {
this.name = name;
}
public List<String> getUsername() {
return username;
}
public void setUsername(List<String> username) {
this.username = username;
}
public List<String> getEmail() {
return email;
}
public void setEmail(List<String> email) {
this.email = email;
}
}
Then in StringError Request set Error text into texView.
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
ErrorModel error = gson.fromJson(response,ErrorModel.class);
recyclerView.setAdapter(new ErrorAdapter(ErrorActivity.this,error.getError));
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
Make RecyclerView adapter to set Error text to TextView

you can check for the keys inside error object and simply can check if the key exists then show the error for particular Textview.
here is the example.I am taking a case where you are using JsonObject class of volley i.e, the response is in JsonObject.
JsonObject obj=response.getAsJsonObject("error");
if(obj.has("name")){
nameTextView.setText(obj.getAsJsonArray("name").get(0)+"");
}
if(obj.has("username")){
usernameTextView.setText(obj.getAsJsonArray("username").get(0)+"");
}
if(obj.has("email")){
emailTextView.setText(obj.getAsJsonArray("email").get(0)+"");
}

How to post long JSON as a body using retrofit?

I am using retrofit to handle the API calls but facing problem while posting long JSON. I am getting:
internal server error(code : 500)
I need to convert post params to below format.
Body :
{"UserId" : "2",
"PortalId" : "1",
"LocaleId" : "1",
"CatalogId" : "3",
"Items" : [{"Name" : "ap1234","Quantity" : "1"}]}
Below is the code I am using
Api Call :
JSONArray array = new JSONArray();
try {
JSONObject jsonObject1 = new JSONObject();
jsonObject1.put("Name", "ap1234");
jsonObject1.put("Quantity", "1");
array.put(jsonObject1);
} catch (JSONException e) {
e.printStackTrace();
}
Call data = mApiInterface.getData("application/json","2", "1", "1", "3", array.toString());
addToCart.enqueue(new Callback<DataResponse>() {
Retrofit Interface :
#FormUrlEncoded
#POST(API_ADD_TO_CART)
Call<DataResponse> getData(#Header("Content-Type") String contentType, #Field("UserId") String userId,
#Field("LocaleId") String localeId,
#Field("PortalId") String portalId,
#Field("CatalogId") String CatalogId,
#Field("Items") String Items);

#Body String body has to be used.
JSONArray array = new JSONArray();
try {
JSONObject jsonObject1 = new JSONObject();
jsonObject1.put("Name", "ap1234");
jsonObject1.put("Quantity", "1");
/*
create a json object pass as body
{"UserId" : "2",
"PortalId" : "1",
"LocaleId" : "1",
"CatalogId" : "3",
"Items" : [{"Name" : "ap1234","Quantity" : "1"}]}
*/
array.put(jsonObject1);
} catch (JSONException e) {
e.printStackTrace();
}
Call data = mApiInterface.getData("application/json","2", "1", "1",
"3", array.toString());
addToCart.enqueue(new Callback<DataResponse>() {
change as following
#FormUrlEncoded
#POST(API_ADD_TO_CART)
Call<DataResponse> getData(#Header("Content-Type") String contentType, #Body String body);

Try using the #Body annotation .
Create a User class add your data to that instance and with retrofit instead of using #field you should send #Body with the User class as body .
example:
interface Foo {
#POST("/jayson")
FooResponse postRawJson(#Body TypedInput body);
}
For more info I found this link to be helpful
https://futurestud.io/tutorials/retrofit-send-objects-in-request-body

retrofit is too typical to implement and this is the easiest method I ever used for retrofit.
public void sendPost(String s1) {
dialog.setMessage("Please wait...");
dialog.setCancelable(false);
dialog.show();
apiService.getData(s1).enqueue(new Callback<JsonObject>() {
#Override
public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {
dialog.dismiss();
try {
if (response != null) {
JSONObject jsonObject = new JSONObject(response.body().toString());
String status = jsonObject.optString("status");
}
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call<JsonObject> call, Throwable t) {
if (dialog != null) {
if (dialog.isShowing()) {
dialog.dismiss();
}
}
}
});
}
I don't think #Header("Content-Type") String contentType is useful in api services, just use #Field to send request
#POST("list_data")
#FormUrlEncoded
Call<JsonObject> shopList(#Field("string") String string);

Thanks for the help guys I did it using #Body
#POST(API_ADD_TO_CART)
Call<ShoppingCartResponse> getData(#Header("Content-Type") String contentType, #Body DataRequest request)
public class AddToCartRequest {
#SerializedName("UserId")
#Expose
private String userId;
#SerializedName("PortalId")
#Expose
private String portalId;
#SerializedName("LocaleId")
#Expose
private String localeId;
#SerializedName("CatalogId")
#Expose
private String catalogId;
#SerializedName("Items")
#Expose
private List<Items> items = null;
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getPortalId() {
return portalId;
}
public void setPortalId(String portalId) {
this.portalId = portalId;
}
public String getLocaleId() {
return localeId;
}
public void setLocaleId(String localeId) {
this.localeId = localeId;
}
public String getCatalogId() {
return catalogId;
}
public void setCatalogId(String catalogId) {
this.catalogId = catalogId;
}
public List<Item> getItems() {
return items;
}
public void setItems(List<Item> items) {
this.items = items;
}
}

Server responce is in json form

I want to send and receive data from server. For this I've used Volley. The code is in below. Volley can receive the data in Json format. The Server can send and receive data in Json format. How do I convert this Json data into a user readable JAVA format ?? There are about 10 methods in other class. The below class contains the methods for network calls and also interacts with the MainActivity.
public class Api_Volley {
String data;
String flag;
public void my_volley_post (String url , JSONObject jsonObject , final Context context ) {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url , jsonObject , new Response.Listener(){
#Override
public void onResponse(Object response) {
String flag = response.toString();
Toast.makeText( context , flag , Toast.LENGTH_LONG ).show();
}
},new Response.ErrorListener(){
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context , "Wrong" , Toast.LENGTH_LONG).show();
error.printStackTrace();
}
});
ApiVolleySingeltonClass.getInstance(context).addToRequestque(jsonObjectRequest);
}
}
Methods in another class:
public void showAllOrderByUserId() {
try {
data_args.put("userId", 2);
} catch (JSONException e) {
e.printStackTrace();
}
try {
data_action.put("action", "showAllOrderByUserId");
data_action.put("args", data_args);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
route = "/order";
new Api_Volley().my_volley_post(addUserUrl + route, data_action, context);
}

Your can use json data like
{"userNodes":[{"id":"1","name":"Enamul Haque"}]}
You can use volley like bellow
private void doLoginAction() {
String url_login = "http://www.lineitopkal.com/android/login.php";
StringRequest stringRequest = new StringRequest(Request.Method.POST, url_login,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//pDialog.dismiss();
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray loginNodes = jsonObject.getJSONArray("userNodes");
for (int i = 0; i < loginNodes.length(); i++) {
JSONObject jo = loginNodes.getJSONObject(i);
String id = jo.getString("id");
Log.e("id ::",id);
String name = jo.getString("name");
Log.e("name ::",name);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
try {
if (error instanceof TimeoutError ) {
//Time out error
}else if(error instanceof NoConnectionError){
//net work error
} else if (error instanceof AuthFailureError) {
//error
} else if (error instanceof ServerError) {
//Erroor
} else if (error instanceof NetworkError) {
//Error
} else if (error instanceof ParseError) {
//Error
}else{
//Error
}
//End
} catch (Exception e) {
}
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<>();
//Post parameter like bellow
params.put("uname", "era#gmail.com");
params.put("pass", "123456");
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}

Create your Response format like this
public class Post {
long id;
Date dateCreated;
String title;
String author;
String url;
String body;
}
After making request like below
public void my_volley_post (String url , JSONObject jsonObject , final Context context ) {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url , jsonObject , new Response.Listener(){
#Override
public void onResponse(String response) {
GsonBuilder gsonBuilder = new GsonBuilder();
gson = gsonBuilder.create();
// This will be your Entity
Post post = gson.fromJson(response, Post.class));
},new Response.ErrorListener(){
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context , "Wrong" , Toast.LENGTH_LONG).show();
error.printStackTrace();
}
});
ApiVolleySingeltonClass.getInstance(context).addToRequestque(jsonObjectRequest);
}

You have to parse JSON and have to show according to need:
By this you can use GSON (Its easy)
Use this Site to convert JSON to pojo classes.
Click here
These are the References site you can use and implement :
http://www.vogella.com/tutorials/JavaLibrary-Gson/article.html
https://www.javacodegeeks.com/2011/01/android-json-parsing-gson-tutorial.html
https://kylewbanks.com/blog/tutorial-parsing-json-on-android-using-gson-and-volley