We Keep Coding

Volley multiple requests to server in Android studio

I'm using volley for my post requests and the issue is when I send 362 requests on queue to the server the data will save even though there's an error response as I assumed, or there are repeating data stored in the database.Sometimes my network connectivity is slow. Let's say I send 362 data to my server and I have 3 error response, when the sync was done the overall total of the saved data is still 362 and it should 359 since I have 3 error response, currently I have condition when the error response received the data should not save to the server.
This is what I've tried
StringRequest request = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject data = new JSONObject(response);
String status = data.getString("status");
String description = data.getString("description");
JSONObject dataObject = data.getJSONObject("data");
String household = dataObject.getString("hh_id");
if (status.matches("success")){
progressCC[0]++;
progressPercent = findViewById(R.id.progressCount);
progressBar = findViewById(R.id.progressBar);
progressCount = findViewById(R.id.progressFigure);
Double progressCalc = progressCC[0] / countEmvDetails * 100;
progressCount.setText(String.valueOf(progressCC[0].intValue()));
progressPercent.setText(String.valueOf(progressCalc.intValue()));
progressBar.setProgress(progressCalc.intValue());
lst.add(description + "household id: " + household);
gvMain.setAdapter(adapter);
if (progressPercent.getText().toString().matches("100")) {
Toasty.success(SyncData.this, "Completed", Toast.LENGTH_SHORT, true).show();
Toasty.success(SyncData.this, "Updating local data please wait!", Toast.LENGTH_SHORT, true).show();
updaterEmvMonitoring();
}
sqLiteHelper.storeLogs("sync", hh_id);
sqLiteHelper.deleteEmvMonitoringDetails(id);
}
else{
btnSync.setEnabled(true);
lst2.add("Error on syncing the data!");
gvMain2.setAdapter(adapter2);
Toasty.error(getApplicationContext(), "Error on pulling data.", Toast.LENGTH_SHORT, true).show();
}
} catch (JSONException e) {
btnSync.setEnabled(true);
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
// method to handle errors.
btnSync.setEnabled(true);
sqLiteHelper.storeLogs("error", hh_id);
try {
String responseBody = new String(error.networkResponse.data, "utf-8");
Integer responseCode = error.networkResponse.statusCode;
if (responseCode == 401) {
JSONObject data = new JSONObject(responseBody);
JSONArray errors = data.getJSONArray("errors");
JSONObject jsonMessage = errors.getJSONObject(0);
String message = jsonMessage.getString("message");
Toasty.warning(SyncData.this, message, Toast.LENGTH_SHORT, true).show();
lst2.add(message);
gvMain2.setAdapter(adapter2);
} else if (responseCode == 404) {
JSONObject data = new JSONObject(responseBody);
String desc = data.getString("description");
Toasty.error(SyncData.this, "Error 404:" + desc, Toast.LENGTH_SHORT, true).show();
lst2.add(desc);
gvMain2.setAdapter(adapter2);
}
} catch (Exception e) {
Log.d("Error co", String.valueOf(e));
lst2.add(String.valueOf(e));
gvMain2.setAdapter(adapter2);
Toasty.error(SyncData.this, "Network not found.", Toast.LENGTH_SHORT, true).show();
}
}
}) {
#Override
public Map<String, String> getHeaders() {
Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Bearer " + token);
return headers;
}
protected Map<String,String> getParams(){
Map<String, String> params = new HashMap<>();
params.put("full_name", full_name);
return params;
}
};
request.setRetryPolicy(new DefaultRetryPolicy(
DefaultRetryPolicy.DEFAULT_TIMEOUT_MS * 5,
0,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
queue.add(request);

JSONObject cannot be converted to String

I saw this questions a bunch of times here in Stack, but had no luck. The thing is, I'm using this API for validate my CNPJ field, if I have a connection, the response would be the field "nome" and populate my textview field.
So far so good, the JSON is valid (already passed in jsonformatter) but I can't the object through JSONArray and when I manage to find it by JSONObject it tells me that can't be converted to String.
valide.setOnClickListener(view1 -> {
//String PJ = cnpj.getText().toString();
String PJ = "06990590000123";
String url = "https://www.receitaws.com.br/v1/cnpj/" + PJ;
jsonParse(url);
});
private void jsonParse(String url) {
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
String json;
#Override
public void onResponse(JSONObject response) {
try {
json = response.getJSONObject("nome").toString();
razao.append(json);
razao.setText(json);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getActivity(), "Invalid ! ", Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError erro) {
erro.printStackTrace();
}
});
mQueue.add(request); //Volley.newRequestQueue
}
JSON
{ "atividade_principal": [ { "text": "Portais, provedores de conteúdo e outros serviços de informação na internet", "code": "63.19-4-00" } ],
"data_situacao": "01/09/2004",
"complemento": "ANDAR 17A20 TSUL 2 17A20", "tipo": "MATRIZ",
**"nome": "GOOGLE BRASIL INTERNET LTDA.", //Need this field**
"uf": "SP",
"telefone": "(11) 2395-8400",
"email": "googlebrasil#google.com",
LOG
org.json.JSONException: Value GOOGLE BRASIL INTERNET LTDA. at nome of
type java.lang.String cannot be converted to JSONObject
at org.json.JSON.typeMismatch(JSON.java:101)
URL USED
https://www.receitaws.com.br/v1/cnpj/06990590000123
Can someone help me with this problem, please ? Thank you !

In your JSON the nome is of type String. So rather than getJSONObject use getString method from JSONObject class. So your code should be like below:
private void jsonParse(String url) {
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
String json;
#Override
public void onResponse(JSONObject response) {
try {
json = response.getString("nome"); // Here is the change
razao.append(json);
razao.setText(json);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getActivity(), "Invalid ! ", Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError erro) {
erro.printStackTrace();
}
});
mQueue.add(request); //Volley.newRequestQueue
}

Try this:
First construct JsonObject and then get the string value of the key.
JSONObject jsonObject = new JSONObject(json);
String valueIWanted = jsonObject.getString("nome"))

How to send Body Data to GET Method Request android using volley?

I have an API which send me a JSON object when I send a token to the server , I use GET method and I have to send token in body, not headers, it works in postman correctly when I put token in body but I have volley server error in android studio and I entered error response.here is my codes:
ant solution???? please
private void getFreightsFromServer()
{
final String url =" https://parastoo.app/api/driver-cargo-list";
JSONObject jsonData = new JSONObject();
String token = G.getString("token");
try
{
jsonData.put("token", token);
} catch (JSONException e)
{
e.printStackTrace();
}
Response.Listener<JSONObject> listener = new Response.Listener<JSONObject>()
{
boolean isGet = false;
#RequiresApi(api = Build.VERSION_CODES.KITKAT)
#Override
public void onResponse(JSONObject response)
{
try
{
MyPost post = new MyPost();
JSONArray jsonArray = response.getJSONArray("results");
for (int i = 0; i < jsonArray.length(); i++)
{
JSONObject tempJsonObject = jsonArray.getJSONObject(i);
JSONObject jsonOriginCustomer = new JSONObject(tempJsonObject.getString("origin_customer"));
post.setOriginCity(jsonOriginCustomer.getString("customerCity"));
JSONObject jsonDestinationCustomer = new JSONObject(tempJsonObject.getString("destination_customer"));
Log.d("result", jsonDestinationCustomer.getString("customerCity"));
post.setDestinationCity(jsonDestinationCustomer.getString("customerCity"));
freightsList.add(post);
// isGet = true;
adapter.notifyDataSetChanged();
}
} catch (JSONException e)
{
e.printStackTrace();
}
}
};
Response.ErrorListener errorListener = new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error)
{
Toast.makeText(getContext(), error.toString(), Toast.LENGTH_LONG).show();
Log.d("jdbvdc", error.toString());
error.printStackTrace();
}
};
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, jsonData, listener, errorListener);
Log.d("fhdhdcf",jsonData.toString());
final int socketTimeout = 100000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, 0, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
request.setRetryPolicy(policy);
AppSingleton.getInstance(getContext()).addToRequestQueue(request);
}

Please show the error message you have. Also I am not sure how ok it is to send something in a body of a GET request. This answer might help you:
HTTP GET with request body

It's better to use post method for this type of request.
But still if you want to use GET method then you should have to pass token in the URL.
Below is an example
final String username = etUname.getText().toString().trim();
final String password = etPass.getText().toString().trim();
URLline = "https://demonuts.com/Demonuts/JsonTest/Tennis/loginGETrequest.php?username="+username+"&password="+password;

How can I make an Http GET request for this json on android?

[{
"name":"George",
"id":"2222",
"lastname":"wist",
"date":"07/08/07"
},
{
"name":"aaron",
"id":"1111",
"lastname":"borris",
"date":"06/06/09"
}]

You can use Volley library. Android volley is a networking library was introduced to make networking calls much easier, faster without writing tons of code.
To use Volley, you have to add below dependencies in your build.gradle file:
dependencies {
.............
......................
compile 'com.mcxiaoke.volley:library-aar:1.0.0'
}
Here is your required HTTP request:
/**
* Method to make json array request where response starts with [
* */
private void makeJsonArrayRequest() {
String url = "YOUR_API_URL";
JsonArrayRequest req = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d("onResponse", response.toString());
// Here response is:
// [{ "name":"George", "id":"2222", "lastname":"wist", "date":"07/08/07" }, { "name":"aaron", "id":"1111", "lastname":"borris", "date":"06/06/09" }]
try {
// Parsing json array response
// loop through each json object
jsonResponse = "";
for (int i = 0; i < response.length(); i++) {
JSONObject person = (JSONObject) response.get(i);
String name = person.getString("name");
String id = person.getString("id");
String lastname = phone.getString("lastname");
String date = phone.getString("date");
jsonResponse += "Name: " + name + "\n\n";
jsonResponse += "Id: " + id + "\n\n";
jsonResponse += "Lastname: " + lastname + "\n\n";
jsonResponse += "Date: " + date + "\n\n\n";
}
Log.d("onResponse", "JSON RESPONSE: " + jsonResponse);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("onErrorResponse", "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
hidepDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
}
Here is a very nice tutorial about Android JSON parsing using Volley
Hope this will help~

Volley JSONException: End of input at character 0 of

I've seen others come across this problem, but none of the posts have been able to assist me. I'm attempting to use Volley for my REST call library, and when I'm attempting to use a Put call with a JSON Object as a parameter, I'm getting error with: org.json.JSONException: End of input at character 0 of.
Here is the code:
protected void updateClientDeviceStatus(Activity activity, final int status) {
JSONObject jsonParams = new JSONObject();
try {
jsonParams.put("statusId", String.valueOf(status));
} catch (JSONException e1) {
e1.printStackTrace();
}
Log.i(LOG_TAG, "json: " + jsonParams.toString());
String url = Constants.API_URL + "client/device/" + getDeviceId();
// Request a response from the provided URL.
JsonObjectRequest request = new JsonObjectRequest
(Request.Method.PUT, url, jsonParams, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.i(LOG_TAG, "updated client status");
Log.i(LOG_TAG, "response: " + response.toString());
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i(LOG_TAG, "error with: " + error.getMessage());
if (error.networkResponse != null)
Log.i(LOG_TAG, "status code: " + error.networkResponse.statusCode);
}
}) {
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("User-Agent", getUserAgent());
params.put("X-BC-API", getKey());
return params;
}
#Override
public String getBodyContentType() {
return "application/json";
}
};
request.setRetryPolicy(new DefaultRetryPolicy(20000, 3, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
MySingleton.getInstance(activity).addToRequestQueue(request);
}
}
The jsonParams log displays:
json: {"statusId":"1"}
Is there another setting that I'm missing? It appears that the request can't parse the JSON Object. I even tried creating a HashMap and then using that to create a JSON Object, but I still get the same result.

I also have encountered this issue.
It's not necessarily true that this is because a problem on your server side - it simply means that the response of the JsonObjectRequest is empty.
It could very well be that the server should be sending you content, and the fact that its response is empty is a bug. If, however, this is how the server is supposed to behave, then to solve this issue, you will need to change how JsonObjectRequest parses its response, meaning creating a subclass of JsonObjectRequest, and overriding the parseNetworkResponse to the example below.
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
JSONObject result = null;
if (jsonString != null && jsonString.length() > 0)
result = new JSONObject(jsonString);
return Response.success(result,
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
Keep in mind that with this fix, and in the event of an empty response from the server, the request callback will return a null reference in place of the JSONObject.

Might not make sense but nothing else worked for me but adding a content-type header
mHeaders.put("Content-Type", "application/json");

In my case it was simply the request I was sending(POST) was not correct. I cross-checked my fields and noted that there was a mismatch, which the server was expecting to get thus the error->end of input at character 0 of...

I had the same problem, I fixed it by creating a custom JsonObjectRequest that can catch a null or empty response :
public class CustomJsonObjectRequest extends JsonObjectRequest {
public CustomJsonObjectRequest(int method, String url, JSONObject jsonRequest, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
super(method, url, jsonRequest, listener, errorListener);
}
public CustomJsonObjectRequest(String url, JSONObject jsonRequest, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
super(url, jsonRequest, listener, errorListener);
}
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
JSONObject result = null;
if (jsonString != null && jsonString.length() > 0)
result = new JSONObject(jsonString);
return Response.success(result,
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
Then just replace the default JsonObjectRequest by this one !

You need to check if the server response is not empty. Maybe it could be a emtply String "".
if (response.success()) {
if (response.getData() == null) {
return null;
} else if (response.getData().length() <= 0){
return null;
}
// Do Processing
try {

I have faced the same problem, there was just a small silly mistake that happened.
instead of
val jsonObject = JSONObject(response.body()?.string())
should be
val jsonObject = JSONObject(response.body()!!.string())