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How should i get the data from sourceJson in android using volley?

Below is the response what i am getting i want to get the data from "SourceJson" m not ble to understnd why i am getting "" in source json please help me
{
"incomingOrder": [
{
"Namw": 8510,
"Surname": "00",
"mob": "00",
"phone": "000",
"SourceJson": "{\"cart_gst\":30.21,\"instructions\":\"\",\"order_packing_charges\":30,\"cart_igst_percent\":0,\"cart_sgst\":15.1038,}",
"test": "NotSynced",
"test": "DPA",
}]}

Try this code :
requestQueue = Volley.newRequestQueue(this);
JsonObjectRequest obreq = new JsonObjectRequest(Request.Method.GET, JsonURL,
// The third parameter Listener overrides the method onResponse() and passes
//JSONObject as a parameter
new Response.Listener<JSONObject>() {
// Takes the response from the JSON request
#Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("incomingOrder");
JSONObject jsonObject = jsonArray.getJSONObject(0);
JSONObject objSourceJson=jsonObject.getJSONObject("SourceJson");
Log.i("IvaSourceJson",objSourceJson.toString());
String cart_gst=objSourceJson.getString("cart_gst");
String instructions=objSourceJson.getString("instructions");
}
// Try and catch are included to handle any errors due to JSON
catch (JSONException e) {
// If an error occurs, this prints the error to the log
e.printStackTrace();
}
}
},
// The final parameter overrides the method onErrorResponse() and passes VolleyError
//as a parameter
new Response.ErrorListener() {
#Override
// Handles errors that occur due to Volley
public void onErrorResponse(VolleyError error) {
Log.e("Volley", "Error");
}
}
);
// Adds the JSON object request "obreq" to the request queue
requestQueue.add(obreq);

As it is JSONArray data is of list type, better not to use jsonArray.getJSONObject(0);.
Use this code for multiple results,
StringRequest request = new StringRequest(Request.Method.GET, "", new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("Response", response);
try {
JSONObject object = new JSONObject(response);
JSONArray array = object.getJSONArray("incomingOrder");
for (int i = 0; i < array.length(); i++){
JSONObject object1 = array.getJSONObject(i);
String name = object1.getString("Namw");
String surname = object1.getString("Surname");
String mob = object1.getString("mob");
String phone = object1.getString("phone");
String sourceJson = object1.getString("SourceJson");
String test = object1.getString("test");
String test1 = object1.getString("test");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("Error", error.getMessage());
}
});
Context context;
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
queue.add(request);
Code this in any method and call the method where the action needed.

Not able to fetch JSON data [using volley Library] in Android

The jason array request code goes like this:
JsonArrayRequest arrayRequest = new JsonArrayRequest(Request.Method.GET,url, (JSONArray) null , new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
try {
Log.d("Response:", String.valueOf(response.getJSONObject(0)));
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context, "Response not recieved", Toast.LENGTH_SHORT).show();
}
});
And I've used a singleton instance of a request queue, to fetch the data,
AppController.getInstance(context.getApplicationContext()).addToRequestQueue(arrayRequest);
I'm using an api service that supplies a bunch of questions (The api generates a url, which returns a collection of JSON Objects, An Array (Just try and Open the url link, the json array will be seen)
But when I run the app, the request is not even getting a response,the progam flow is going into the error listner block.
Can someone explain this behaviour? Is it because the JSON array supplied by the url, has nested arrays? Why?
I tried reading and anlyzing other questions here, which might have the same issue, But i found nothing.

You want to just change JsonArrayRequest to JsonObjectRequest:
Please copy and paste below code:
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d("TAG", response.toString());
try {
JSONArray jsonArray = response.getJSONArray("results");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
String category = jsonObject.getString("category");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("TAG", "Error: " + error.getMessage());
// hide the progress dialog
}
});
AppController.getInstance().addToRequestQueue(jsonObjReq, "TAG");
Follow this link for learn other request: Androidhive

how to get a json property by index

in a json file i have several properties, some of them contains one object and some of them are array of objects. the property that contains array of objects is called "products".
but i know the position of that property the i want to parse it is number 3. so to parse the contents of the property that is called "products"
code:
private void fetchPosts2() {
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, API_BASE_URL, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.i(TAG, String.valueOf(response));
String json = null;
JSONObject jresponse = null;
try {
jresponse = response.getJSONObject(3); //the arguments 3 is marked with red it is expected to be a string???
} catch (JSONException e) {
e.printStackTrace();
}
Log.i(TAG, "" + jresponse);//always null
/*String data = "{ ... }";
Object json = new JSONTokener(data).nextValue();
if (json instanceof JSONObject);
else if (json instanceof JSONArray)*/
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue.add(request);
}

You should use JsonArrayRequest instead of JsonObjectRequest to get element with index.

Writing JSON String as String in Android

I am creating an app which uses volley. I used JsonObjectRequest() to send Json object through volley. Thus I had to create Jason Object from values taken from Edit text.
btn_enter.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
SN1 = inputsn.getText().toString();
Name1 = inputname.getText().toString();
}
});
JSONObject jsonMenu= null;
try {
jsonMenu = new JSONObject("");//string is to be added here
Toast.makeText(Add.this,"Made Obj",Toast.LENGTH_SHORT);
} catch (JSONException e) {
e.printStackTrace();
Log.d("Add","Error");
}
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, URL,jsonMenu, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d("MainActivity",response.toString());
Toast.makeText(Add.this,"Response Received",Toast.LENGTH_SHORT);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(Add.this,"Error",Toast.LENGTH_SHORT);
}
});
RequestQueue queue= Volley.newRequestQueue(this);
queue.add(request);
Here, [{"SN":1,"Name":"Ajeeb"}] values 1 and Ajeeb is to be replaced by values of SN1 and Name1 respectively.Such that I can add it to Java code
JSONObject jsonMenu = new JSONObject("\\String goes here");

You can create property for json object and than as it to your Json Object
jsonMenu.addProperty("SN", SN1);
jsonMenu.addProperty("Name", Name);
This will result in {"SN":1,"Name":"Ajeeb"}
And if you want to create an array for it
JSONArray jsonArray = new JSONArray();
jsonArray.put(jsonMenu);
This will result in [{"SN":1,"Name":"Ajeeb"}]

com.android.volley.ParseError: org.json.JSONException

I got this error from volley library
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
the error
com.android.volley.ParseError: org.json.JSONException: Value [{"id":"admin","name":"Admin"}] of type org.json.JSONArray cannot be converted to JSONObject
How can I receive the result as string and then I will process it using jackson ?

If you want to receive the result as a string don't use the JSONRequest. Go with the simple Request class.
Your problem is pretty simple the server is giving back a JSONArray with just one element inside.
A JSONArray is not a JSONObject. That's why the parsing is failing.

We Have to use JsonArrayRequest instead of JsonObjectRequest. The code as:
RequestQueue queue = Volley.newRequestQueue(this);
final String url = "http://192.168.88.253/mybazar/get_product_list.php";
// prepare the Request
JsonArrayRequest getRequest = new JsonArrayRequest(Request.Method.GET, url, null,
new Response.Listener<JSONArray>()
{
#Override
public void onResponse(JSONArray response) {
// display response
Log.d("Response", response.toString());
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
Log.d("Error.Response", error.toString());
}
}
);
// add it to the RequestQueue
queue.add(getRequest);
Hope, it's solve the problem.

I noticed that there is class JsonArrayRequest supported by volley so I use this class and the problem solved, I was using JsonObjectRequest
https://android.googlesource.com/platform/frameworks/volley/+/43950676303ff68b23a8b469d6a534ccd1e08cfc/src/com/android/volley/toolbox

Probably the below logic will work for you:
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(
Request.Method.GET,
url,
null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONObject jsonObject1 = new JSONObject(response.toString());
JSONArray jsonArray = jsonObject1.getJSONArray("statewise");
Log.d("Json response", "onResponse: "+jsonObject1.toString());
for (int i = 0; i < jsonArray.length; i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
//Here you will get your result so can use textview
//to populate the result
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "onErrorResponse: "+error);
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(jsonObjectRequest);
}