Here is my volley code, but onResponse() as well as onErrorResponse() are not called. The Log lines are never printed as these metods are skipped. But the last log line appears in logcat and the jsObjRequest is always null.
String url = "A valid url";
JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.GET,
url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.e("onResponse",""+response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("onErrorResponse", "" + error);
}
});
Log.e("jsObjRequest", "" + jsObjRequest);
You need to enqueue your request:
RequestQueue queue = Volley.newRequestQueue(this);
String url = "A valid url";
JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.GET,
url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.e("onResponse",""+response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("onErrorResponse", "" + error);
}
});
Log.e("jsObjRequest", "" + jsObjRequest);
queue.add(jsObjRequest);
see this: https://developer.android.com/training/volley/simple.html
You should add your request to a RequestQueue. In your situation simply add these 2 lines of code below yours, it will work then.
RequestQueue rQueue = Volley.newRequestQueue(this);
rQueue.add(jsObjRequest);
For this issue i use HTTPS and its working very well now
Related
CODE
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest
(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Toast.makeText(MainActivity.this, "working", Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, error.toString(), Toast.LENGTH_SHORT).show();
}
});
queue.add(jsonObjectRequest);
PROBLEM
This is my code in which I'm using the Volly-Library to get the JSON Object using the GET Method. I'm using Volly Library in my Android App to get the Json response using the Volly-Library. But it is throwing the AuthFailureError.
I am hitting API on the server. It is working perfectly but when I run it in my app I am getting volley onErrorResponse along with data . I am not able to understand how it is possible. I am sharing code and error image. Please check.
private void callProductsApi() {
String tag_json_obj = "json_obj_req";
String url = Constants.GET_PRODUCTS;
pBar.setVisibility(View.VISIBLE);
JSONObject params = new JSONObject();
try {
params.put("token", Constants.token);
} catch (Exception e) {
e.printStackTrace();
}
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST,
url, params,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.e("login_response", response.toString());
pBar.setVisibility(View.GONE);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.e("Error: " + error.getMessage());
Toast.makeText(Splash.this, R.string.some_error_occured, Toast.LENGTH_LONG).show();
pBar.setVisibility(View.GONE);
}
});
jsonObjReq.setRetryPolicy(new DefaultRetryPolicy(
100000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
AppController.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj);
}
The api should return success code which is 200, 201 and so on response. if it returns
other response in line of 400 or 500 it will display the correct json but in error method.
URL: http://androidtutorialpoint.com/api/volleyJsonObject
Code:
public void volleyJsonObjectRequest(String url) {
String REQUEST_TAG = "JSONOBJ_TAG";
JsonObjectRequest jsonObjectReq = new JsonObjectRequest(url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d("VOLLEY RESPONSE", response.toString());
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
VolleyLog.d("VOLLEY ERROR", "Error: " + error.getMessage());
}
});
// Adding JsonObject request to request queue
AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(jsonObjectReq, REQUEST_TAG);
}
I am trying to log the volley respone but I am getting the following error instead:
Cannot cast 'com.android.volley.ServerError' to 'com.android.volley.NoConnectionError'
I have checked the URL in the POSTMAN and it works fine. Is there something I am missing in my code? Been trying to debug but couldn't find the root cause.
Found the solution:
Replace http with https
I need help.
I use volley for sending json object to my rest API server. And i get data from this API to my app (json). Its work fine:
JsonObjectRequest mJsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url, JSONDATA, JSONListener, errorListener)
...
And now I want to send request without JSONDATA (i can't set null). It is for global values. There is not necessary send some data. And i dunno how to send this request. Can you help me?
till i understand ur problem my answer is this
StringRequest distRequest=new StringRequest(Request.Method.POST, YOUR_URL, new Response.Listener<String>() {
#Override public void onResponse(String response) {
Toast.makeText(MainActivity.this, " "+response.toString, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
progressDialog.dismiss();
Toast.makeText(MainActivity.this, " "+error.toString, Toast.LENGTH_SHORT).show();
}
});
RequestQueue distQueue=Volley.newRequestQueue(this);
distQueue.add(distRequest);
}
Try this:
// prepare the Request
JsonObjectRequest getRequest = new JsonObjectRequest(Request.Method.GET, url, null,
new Response.Listener<JSONObject>()
{
#Override
public void onResponse(JSONObject response) {
// display response
Log.d("Response", response.toString());
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
Log.d("Error.Response", response);
}
}
);
// add it to the RequestQueue
queue.add(getRequest);
I have to make a json post request with the following parameters.
{"method":"login","data":{"username":"korea","password":"123456"}}
I use volley to make post request and follwoing is my code to do post request.
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, loginURL, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Toast.makeText(mContext,response.toString(),Toast.LENGTH_SHORT).show();
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("Volley", "Error");
}
}
){
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> map = new HashMap<String,String>();
map.put("method","login");
map.put("username","korea");
map.put("password","123456");
return map;
}
};
requestQueue.add(jsonObjectRequest);
requestQueue.start();
Im getting error response from server. How to get proper response from server?
Change Request.Method.GET to Request.Method.POST. Then pass a JSONObject as the third parameter where you currently have null;
For example:
JSONObject data = new JSONObject();
data.put("username","korea");
data.put("password","123456");
JSONObject jsonObject = new JSONObject();
jsonObject.put("method","login");
jsonObject.put("data",data);
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, loginURL, jsonObject, responseListener, errorListener);
I use volley to make post request and follwoing is my code to do post request
That is not a POST request, AFAICT. You are using Request.Method.GET.
Use following method to post the data to server
public void postDataVolley(Context context,String url,JSONObject sendObj){
try {
RequestQueue queue = Volley.newRequestQueue(context);
JsonObjectRequest jsonObj = new JsonObjectRequest(url,sendObj, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d("Volley", "Volley JSON post" + response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("Volley", "Volley JSON post" + "That didn't work!");
}
});
queue.add(jsonObj);
}catch(Exception e){
}
}