Develop Reference

How to send json data with header using volley library

I am trying to send json data to a url in the format below.
{
“amount”:500,
“merchant_id”:”104”,
“narrative”:”John”,
“reference”:”Steven”
}
To send data to the url, one needs an authorization key as the header, I have already figured out how to set the authorization key as the header in Params, as shown below
#Override
public Map<String,String >getHeaders()throws AuthFailureError{
Map<String,String >params=new HashMap<String,String>();
params.put(“Content-Type”, “text/jsom;);
params.put(“AuthKey”, Auth);
return params;
but I do not know how to send the data in the particular format shown in the first instance to the url using params with volley. Please help, I am quite new to using Volley library .
This is the rest of code I am currently using it however does not return any response except for an invalid json error. Meaning the format sent is not corresponding to the one desired.
StringRequest stringRequest=new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Toast.makeText(Main9Activity.this, response, Toast.LENGTH_LONG).show();
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(Main9Activity.this, error.toString(), Toast.LENGTH_LONG).show();
}
}){
#Override
protected Map<String, String> getParams() {
HashMap<String, String> params = new HashMap<String, String>();
params.put("amount","500");
params.put("merchant_id", "104");
params.put("narrative","John");
params.put("reference", "Steven");
return params;
}
#Override public Map<String,String>getHeaders()throws AuthFailureError{
Map<String,String>headers=new HashMap<>();
params.put("Content-Type","text/json");
params.put("Authorization",Auth);
return params;
}
};
RequestQueue requestQueue=Volley.newRequestQueue(this);
requestQueue.add(stringRequest);

You can refer below code snipet to post data with custom header in volley.
JSONObject jsonobject = new JSONObject();
jsonobject.put("amount", "500");
jsonobject.put("merchant_id", "104");
jsonobject.put("narrative", "John");
jsonobject.put("reference", "Steven");
JsonObjectRequest jsonObjReq = new JsonObjectRequest(
Request.Method.POST,url, jsonobject,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d(TAG, response.toString());
Toast.makeText(Main9Activity.this, response.toString(), Toast.LENGTH_SHORT).show();
hideProgressDialog();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(Main9Activity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
hideProgressDialog();
}
}) {
/**
* Passing some request headers
* */
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String,String >headers=new HashMap<String,String>();
headers.put(“Content-Type”, “application/json“);
headers.put(“AuthKey”, Auth);
return headers;
}

You can send as below:
The data you want to send:
Hashmap<String, Object> data = new HashMap<>();
data.put("amount", "500");
data.put("merchant_id", "104");
data.put("narrative", "John");
data.put("reference", "Steven");
RequestQueue request = Volley.newRequestQueue(context);
JsonObjectRequest jsonobj = new JsonObjectRequest(Request.Method.POST, "your url",new JSONObject(data),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
}
){
};
request.add(jsonobj);

Send token header in json object paramater Volley post

I am using post method in volley. I searched and found that getHeader() is used to send header in request.The solution was to use JSONObject request instead of string request(which i am using currently) but is there a way of sending header through this method? Because in that case I will have to modify a lot of code in many classes. Sorry for the English, I am not a native speaker.
The request parameter is a json object. I am sending the parameters using following code.
mRequestQueue = Volley.newRequestQueue(getContext());
mStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("Response", "onResponse: " + response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("This is the error", "Error :" + error.toString());
}
})
{
#Override
public String getBodyContentType() {
return "application/json";
}
#Override
public byte[] getBody() throws AuthFailureError {
HashMap<String, String> params2 = new HashMap<String, String>();
params2.put("AssigneeId",userid);
params2.put("IssueStatus", "5");
return new JSONObject(params2).toString().getBytes();
}
};
mRequestQueue.add(mStringRequest);

This request also has StringRequest. Please use the getHeaders() in this way:
public void requestWithSomeHttpHeaders() {
RequestQueue queue = Volley.newRequestQueue(this);
String url = "http://www.somewebsite.com";
StringRequest getRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>()
{
#Override
public void onResponse(String response) {
// response
Log.d("Response", response);
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
Log.d("ERROR","error => "+error.toString());
}
}
) {
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("User-Agent", "Nintendo Gameboy");
params.put("Accept-Language", "fr");
return params;
}
};
queue.add(getRequest);
}
For JsonObjectRequest:
JsonObjectRequest req = new JsonObjectRequest(Request.Method.GET,url,
null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d(tag, response.toString());
activity.hideDialog();
try {
activity.onRequestServed(response, code);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(tag, "Error: " + error.getMessage());
Log.e(tag, "Site Info Error: " + error.getMessage());
Toast.makeText(activity.getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
activity.hideDialog();
try {
activity.onRequestServed(null,code);
} catch (JSONException e) {
e.printStackTrace();
}
}
}) {
/**
* Passing some request headers
*/
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<String, String>();
//headers.put("Content-Type", "application/json");
headers.put("key", "Value");
return headers;
}
};

Android Communicate with wit.ai

I am trying to establish connection with wit.AI using Volley . However, all i am getting is a 400 error.
public void makeRequest(String url) {
RequestQueue queue = Volley.newRequestQueue(MainActivity.this);
StringRequest postRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Toast.makeText(MainActivity.this, "YOU'RE TOAST", Toast.LENGTH_SHORT).show();
Log.d("accessToken:", response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError volleyError) {
Log.d("error:", volleyError.toString());
}
}) {
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = new HashMap<String, String>();
headers.put("Authorization:", "Bearer SAMPLETOKENHERE");
return headers;
}
};
queue.add(postRequest);
}

I found my issue . It was because I put a ":" in my authorization . I didn't know I did not needed it. It works now

Volley request showing com.android.volley.ServerError

Volley request showing com.android.volley.ServerError also it is neccessary to implement getHeaders() method? What is exact use of this method?
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest
(Request.Method.POST, URL, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Toast.makeText(getApplicationContext(),response.toString(),Toast.LENGTH_LONG).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
}){
#Override
protected Map<String,String> getParams(){
Map<String,String> params = new HashMap<String, String>();
params.put("username","Admin");
params.put("password", "123456789");
return params;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/x-www-form-urlencoded");
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(jsonObjectRequest);
}
});

Generally this type of error occurs when you are using poor internet connection or else your server goes down. There is no need to implement getHeaders() method. Try to just check your connection or server connection.
Use the android volley library,
compile 'com.android.volley:volley:1.0.0'
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST,
url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d(TAG, response.toString());
Toast.makeText(getApplicationContext(),response.toString(),Toast.LENGTH_LONG).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "Error: " + error.getMessage());
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("username","Admin");
params.put("password", "123456789");
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(jsonObjectRequest);
Hope this will help you (Happy Coding !).

Android Volley code 400

I'm trying to post data to website. It is login operation. I check form data hidden tag etc. In form data there is a hidden input _RequestVerificationToken. That's why first, I made get request to parse _RequestVerificationToken and for headers.
StringRequest _StringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//Parsing Process
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
}
)
{
#Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
headers=response.headers;
return super.parseNetworkResponse(response);
}
};
After all i made post request with parameters and headers:
#Override
public Map<String, String> getParams()
{
Map<String, String> params = new HashMap<>();
// the POST parameters:
params.put("Password", password);
params.put("RememberMe", "false");
params.put("ReturnUrl", url_post);
params.put("UserName",username);
params.put(name,_RequestVerificationToken);
return params;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers;
}
I check form data by using fiddler extension in chrome. I checked parameters again and again but it returned code 400. Can you show me what is the problem?

Change Request.Method.GET to Request.Method.POST
StringRequest _StringRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//Parsing Process
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
}
)
{
#Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
headers=response.headers;
return super.parseNetworkResponse(response);
}
};
Or You can use this code:-
StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
returnValue = response;
try {
parseFromUrl(response);
System.out.println(returnValue);
} catch (JSONException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(app,error.toString(),Toast.LENGTH_SHORT).show();
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("Password", password);
params.put("RememberMe", "false");
params.put("ReturnUrl", url_post);
params.put("UserName",username);
params.put(name,_RequestVerificationToken);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(app);
requestQueue.add(stringRequest);

I solve the problem with this class and I added this:
CookieManager cookieManager = new CookieManager(new PersistentCookieStore(this), CookiePolicy.ACCEPT_ORIGINAL_SERVER);
CookieHandler.setDefault(cookieManager);
before add request to queue