Develop Reference

App crashing when load sql data with json from website

i have an app and my app connected to my website api.php . When activity open and start to load data with json from site, frame increase to 192+. After some seconds app crashing. There is my codes.
public void check_spinner() {
JsonRequest stringRequest = new JsonRequest(Request.Method.POST, Base_Url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
// Toast.makeText(Spinner_Activity.this, response.toString(), Toast.LENGTH_SHORT).show();
if (response.getString("error").equalsIgnoreCase("false")) {
int daily = response.getInt("daily");
int left = response.getInt("left");
int leftt = daily-left;
spins.setText(leftt+" spin mövcuddur");
if (left>=daily)
{ spin_btn.setEnabled(false); }else { spin_btn.setEnabled(true); }
} else {
Toast.makeText(VideoActivity.this, response.getString("message"), Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put(ACCESS_KEY, ACCESS_Value);
params.put("usernamee", AppController.getInstance().getUsername());
params.put("spinner", "spinner");
return params;
}
};
AppController.getInstance().addToRequestQueue(stringRequest);
}
JsonRequest
public class JsonRequest extends Request<JSONObject> {
private Listener<JSONObject> listener;
private Map<String, String> params;
public JsonRequest(int method, String url, Map<String, String> params, Listener<JSONObject> reponseListener, ErrorListener errorListener) {
super(method, url, errorListener);
this.listener = reponseListener;
this.params = params;
}
protected Map<String, String> getParams()
throws com.android.volley.AuthFailureError {
return params;
};
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
#Override
protected void deliverResponse(JSONObject response) {
// TODO Auto-generated method stub
listener.onResponse(response);
}
}
I'm trying to replace json object with json array but i'm beginner and i can't do this. When i change it, getting errors.

Volley POST Request with headers and raw json body

I am trying to make Post request from Android App that takes username and password in request body with content-type application/json in headers.
I tried changing content-type and how i send username passoword in body, but still no luck
public class MainActivity extends AppCompatActivity {
private Button Login;
private EditText loginEmail, loginPassword;
String URL = "https://localhost:8080/api/v1/auth";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loginEmail = (EditText)findViewById(R.id.etUsername);
loginPassword = (EditText)findViewById(R.id.etPassword);
Login = (Button)findViewById(R.id.btnLogin);
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("username", loginEmail.getText().toString());
} catch (JSONException e) {
e.printStackTrace();
}
try {
jsonObject.put("password", loginPassword.getText().toString());
} catch (JSONException e) {
e.printStackTrace();
}
final String requestBody = jsonObject.toString();
Login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
StringRequest request = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Toast.makeText(MainActivity.this, response, Toast.LENGTH_LONG).show();
startActivity(new Intent(MainActivity.this, LandingPage.class));
finish();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, "Error", Toast.LENGTH_LONG).show();
NetworkResponse response = error.networkResponse;
if (error instanceof ServerError && response != null) {
try {
String res = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, "utf-8"));
// Now you can use any deserializer to make sense of data
JSONObject obj = new JSONObject(res);
Toast.makeText(MainActivity.this, res, Toast.LENGTH_LONG).show();
Log.i("MainActivity", res);
//use this json as you want
} catch (UnsupportedEncodingException e1) {
// Couldn't properly decode data to string
e1.printStackTrace();
} catch (JSONException e2) {
// returned data is not JSONObject?
e2.printStackTrace();
}
}
}
})
{
#Override
public String getBodyContentType() {
return "application/json; charset=utf-8";
}
#Override
public byte[] getBody() throws AuthFailureError {
try {
return requestBody == null ? null : requestBody.getBytes("utf-8");
} catch (UnsupportedEncodingException uee) {
VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", requestBody, "utf-8");
return null;
}
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/json");
return params;
}
};
RequestQueue rQueue = Volley.newRequestQueue(MainActivity.this);
rQueue.add(request);
}
});
}
}
Post Request from Postman works perfectly fine but it throws Error 400 with Volley.
Below is the error I get in console
"errorSummary":"Bad request. Accept and/or Content-Type headers likely do not match supported values."

Try using a custom request and extending Request<JSONObject>:
CustomRequest class:
public class CustomRequest extends Request<JSONObject> {
private final Map<String, String> mHeaders;
private final JSONObject mBody;
private final Response.Listener<JSONObject> mResponseListener;
public CustomRequest(int method, String url, Map<String, String> headers, JSONObject body, Response.Listener<JSONObject> responseListener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.mHeaders = headers;
this.mBody = body;
this.mResponseListener = responseListener;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return mHeaders != null ? mHeaders : super.getHeaders();
}
#Override
public String getBodyContentType() {
return "application/json; charset=UTF-8";
}
#Override
public byte[] getBody() throws AuthFailureError {
return mBody != null ? mBody.toString().getBytes(Charset.forName("UTF-8")) : super.getBody();
}
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException | JSONException e) {
return Response.error(new ParseError(e));
}
}
#Override
protected void deliverResponse(JSONObject response) {
mResponseListener.onResponse(response);
}
}
Usage:
String url = "https://localhost:8080/api/v1/auth";
Map<String, String> headers = new HashMap<>();
headers.put("Content-Type", "application/json");
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("username", loginEmail.getText().toString());
jsonObject.put("password", loginPassword.getText().toString());
} catch (JSONException e) {
e.printStackTrace();
}
CustomRequest customRequest = new CustomRequest(Request.Method.POST, url, headers, jsonObject, response -> {
// put your reponse listener code here
}, error -> {
// put your error listener code here
});
RequestQueue queue = Volley.newRequestQueue(context);
queue.add(customRequest);

Custom Gson request and response in post method

What have I done wrong?. How can i resolve this?. Please explain why this error occur. if it is run successfully what is my response?
MainActivity :
public class MainActivity extends AppCompatActivity {
String url = "http://vsstechnology.com/DTSignUp/api/business/create_business.php";
String TAG = "MainActivity";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
HashMap<String, String> params = new HashMap<>();
params.put("address", "xxx");
params.put("business_description", "xx");
params.put("businessEmail", "xxx#gmail.com");
params.put("business_name", "xxx");
params.put("phone", "1234567890");
params.put("business_type", "xx");
params.put("created_by", "xxx");
params.put("customer_name", "xxx");
params.put("email", "yyy#gmail.com");
params.put("firstName", "yyy");
params.put("lastName", "yyy");
params.put("phone", "6544324569");
GsonRequest<Model> gsonRequest = new GsonRequest<Model>(Request.Method.POST, url, Model.class, params, new Response.Listener<Model>() {
#Override
public void onResponse(Model response) {
Toast.makeText(getApplicationContext(), "success" + " " + response, Toast.LENGTH_LONG).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), "error" + " " + error, Toast.LENGTH_LONG).show();
}
});
requestQueue.add(gsonRequest);
}
}
Model :
public class Model {
private Business business;
private Contacts[] contacts;
private ServerResponse serverResponse;
public Model(Business business, Contacts[] contacts, ServerResponse serverResponse) {
this.business = business;
this.contacts = contacts;
this.serverResponse = serverResponse;
}
public Business getBusiness() {
return business;
}
public void setBusiness(Business business) {
this.business = business;
}
public Contacts[] getContacts() {
return contacts;
}
public void setContacts(Contacts[] contacts) {
this.contacts = contacts;
}
public ServerResponse getServerResponse() {
return serverResponse;
}
public void setServerResponse(ServerResponse serverResponse) {
this.serverResponse = serverResponse;
}
}
custom GsonRequest :
public class GsonRequest<T> extends Request<T> {
private Gson gson = new Gson();
private Class<T> clazz;
private Map<String, String> headers;
private Map<String, String> params;
private Response.Listener<T> listener;
/**
* Make a GET request and return a parsed object from JSON.
*
* #param url URL of the request to make
* #param clazz Relevant class object, for Gson's reflection
* #param params Map of request headers
*/
public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> params,
Response.Listener<T> listener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.clazz = clazz;
this.headers = null;
this.params = params;
this.listener = listener;
gson = new Gson();
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers != null ? headers : super.getHeaders();
}
#Override
protected Map<String, String> getParams() throws AuthFailureError {
return super.getParams();
}
#Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
#Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(
gson.fromJson(json, clazz),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JsonSyntaxException e) {
return Response.error(new ParseError(e));
}
}
}
Error :
com.android.volley.ParseError : com.Google.gson.JsonSyntaxException:
java.lang.illegalStateException: Expected BEGIN_OBJECT but was STRING
at line 1 column 1 path $

Based on your error some thing is wrong with your API, to debug it you can use Postman.

Getting BasicNetwork.performRequest: Unexpected response code 400 in Volley

In My Activity it Checks the user credentials and returns session id and related info if valid. The Method is POST.The parameter has to send as JSON.
{
"params": {
"context": {},
"db": "testing",
"login": "admin",
"password": "admin"
}
}
So i create a JSONObject and send it as it is With Header.I am getting response in POSTMAN.But what i m getting error when i call it as it is.Can Any one help me in this?
private void volleyLogin() throws JSONException {
mProgressView.setVisibility(View.VISIBLE);
JSONObject one = new JSONObject();
one.put("context",new JSONObject());
one.put("db","testing");
one.put("login","admin");
one.put("password","admin");
JSONObject params = new JSONObject();
params.put("params",one);
HashMap<String, String> header = new HashMap<String, String>();
header.put("Content-Type", "application/json; charset=utf-8");
RequestQueue requestQueue = Volley.newRequestQueue(this);
CustomRequest jsObjRequest = new CustomRequest(Request.Method.POST,
ApiConstants.URL_AUTHENTICATE,params,header, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
System.out.println("Response"+response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.println("VolleyError"+error);
}
}
);
jsObjRequest.setRetryPolicy(new DefaultRetryPolicy(
(int) TimeUnit.SECONDS.toMillis(120),
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
System.out.println("jsObjRequest"+jsObjRequest);
requestQueue.add(jsObjRequest);
}
Here is the Custom Request Class
public class CustomRequest extends Request<JSONObject> {
private Response.Listener<JSONObject> listener;
private JSONObject jsonObjectParams;
private Map<String, String> headers;
public CustomRequest(int method,String url, JSONObject jsonObjectParams,Map<String, String> headers,
Response.Listener<JSONObject> reponseListener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.listener = reponseListener;
this.jsonObjectParams = jsonObjectParams;
this.headers= headers;
System.out.println("method"+method);
System.out.println("url"+url);
System.out.println("jsonObjectParams"+jsonObjectParams);
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers;
}
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
#Override
protected void deliverResponse(JSONObject response) {
// TODO Auto-generated method stub
listener.onResponse(response);
}
#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;
}
}

You can try something like this:
Create a singletone class VolleyDispatcher, that holds the RequestQueue from volley.
public RequestQueue getRequestQueue() {
if (requestQueue == null) {
// getApplicationContext() is key, it keeps you from leaking the
// Activity or BroadcastReceiver if someone passes one in.
requestQueue = Volley.newRequestQueue(mContext.getApplicationContext());
}
return requestQueue;
}
/**
* Recreates the request queue using username/password https auth.
*/
public void recreateRequestQueue() {
if (!AppUtil.isEmpty(AppConstants.USERNAME) && !AppUtil.isEmpty(AppConstants.PASSWORD)) {//check if a user is logged in so that the https auth can be created if necessary
if (requestQueue != null) {
requestQueue.stop();
requestQueue = null;
}
requestQueue = Volley.newRequestQueue(mContext.getApplicationContext(), new HurlCustomStack());
}
}
public <T> void addToRequestQueue(Request<T> req) {
getRequestQueue().add(req);
}
Call recreateRequestQueue before doing any volley requests
Implement the custom HurlStack
public class HurlCustomStack extends HurlStack {
#Override
protected HttpURLConnection createConnection(URL url) throws IOException {
// Workaround for the M release HttpURLConnection not observing the
// HttpURLConnection.setFollowRedirects() property.
// https://code.google.com/p/android/issues/detail?id=194495
// connection.setInstanceFollowRedirects(HttpURLConnection.getFollowRedirects());
return HttpUrlConnectionHelper.getInstance().createHttpUrlConnection(url);
}
}
And the client creation method:
public HttpURLConnection createHttpUrlConnection(URL url) throws IOException {
Log.d(TAG, "Create http url connection with url : " + url.toString());
HttpURLConnection httpConnection = null;
if ("https".equalsIgnoreCase(url.getProtocol())) {
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(DO_NOT_VERIFY);
httpConnection = https;
} else {
httpConnection = (HttpURLConnection) url.openConnection();
}
httpConnection.setReadTimeout(TIMEOUT);
httpConnection.setConnectTimeout(TIMEOUT);
String basicAuth = "Basic " + new String(Base64.encode((AppConstants.USERNAME + ":" + AppConstants.PASSWORD).getBytes(), Base64.NO_WRAP));
httpConnection.setRequestProperty("Authorization", basicAuth);
httpConnection.setRequestProperty("Accept-Language", Locale.getDefault().getLanguage());
return httpConnection;
}
So now, every time you want to make a request, just use the addToRequestQueue method in the VolleyDispatcher class.

How to rewrite my multipart post string request to json object request using volley?

I have a thread here on stack overflow, and I already solved my problem upon using a multipart post through Volley. The problem is, what I have done is a String request and I want it to be change to JSONObject request because I needed to catch the server's response.
UPADATE : I also tried to change all Response<String> to Response<JSONObject>
This is my new implementation at my parseNetworkResponse(NetworkResponse response) method :
#Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response)
{
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
But unfortunately, It started calling the error response method
#Override
public void onErrorResponse(VolleyError error) {
Log.i("Error",error.toString());
}
The error displayed is :
com.android.volley.ParseError: org.json.JSONException: Value <div of type java.lang.String cannot be converted to JSONObject

As my answer in your previous question, I suggest that you create a custom request that reponses NetworkResponse or JSONObject like the following :
MultipartRequest.java:
class MultipartRequest extends Request<NetworkResponse> {
private final Response.Listener<NetworkResponse> mListener;
private final Response.ErrorListener mErrorListener;
private final Map<String, String> mHeaders;
private final String mMimeType;
private final byte[] mMultipartBody;
public MultipartRequest(String url, Map<String, String> headers, String mimeType, byte[] multipartBody, Response.Listener<NetworkResponse> listener, Response.ErrorListener errorListener) {
super(Method.POST, url, errorListener);
this.mListener = listener;
this.mErrorListener = errorListener;
this.mHeaders = headers;
this.mMimeType = mimeType;
this.mMultipartBody = multipartBody;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return (mHeaders != null) ? mHeaders : super.getHeaders();
}
#Override
public String getBodyContentType() {
return mMimeType;
}
#Override
public byte[] getBody() throws AuthFailureError {
return mMultipartBody;
}
#Override
protected Response<NetworkResponse> parseNetworkResponse(NetworkResponse response) {
try {
return Response.success(
response,
HttpHeaderParser.parseCacheHeaders(response));
} catch (Exception e) {
return Response.error(new ParseError(e));
}
}
#Override
protected void deliverResponse(NetworkResponse response) {
mListener.onResponse(response);
}
#Override
public void deliverError(VolleyError error) {
mErrorListener.onErrorResponse(error);
}
}
Here, you can create a custom MultipartRequest extends Request<JSONObject>
Hope this helps!
UPDATE FOR YOUR COMMENT:
I have a multipart entity is already included in apache http component libraries. Is there is any alternatives?
Here is my Request with HttpEntity and return a JSONArray. I think you can customize to return a JSONObject if you like.
private void makeJsonArrayRequest(Context context, int method, String url, HttpEntity httpEntity, final VolleyResponseListener listener) {
JSONObject jsonRequest = null;
String stringEntity;
try {
stringEntity = EntityUtils.toString(httpEntity);
if (stringEntity != null) {
jsonRequest = new JSONObject(stringEntity);
}
} catch (IOException | JSONException e) {
e.printStackTrace();
}
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(method, url, jsonRequest, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray jsonArray) {
listener.onResponse(jsonArray);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
listener.onError(getErrorMessage(error));
}
}) {
#Override
protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) {
...
}
#Override
protected VolleyError parseNetworkError(VolleyError volleyError) {
...
}
};
// Access the RequestQueue through singleton class.
MySingleton.getInstance(context).addToRequestQueue(jsonArrayRequest);
}