Develop Reference

Delete request params URL Volley android

I have an API with a delete function like this:
http://localhost/v1/deletePost/:id
when i try in postman succeed by entering param in url ":id" like ../deletePost/37".
how to implement the "/:id" request in android using Volley library?

Here is a guide about how to use Volley Library
On the page Sending a Simple Request:
final TextView mTextView = (TextView) findViewById(R.id.text);
//...
// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(this);
String url ="http://www.google.com";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
// Display the first 500 characters of the response string.
mTextView.setText("Response is: "+ response.substring(0,500));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
mTextView.setText("That didn't work!");
}
});
// Add the request to the RequestQueue.queue.add(stringRequest);
Then you need to change GET to DELETE Request.Method.DELETE and the url for your url with the id http://localhost/v1/deletePost/37
Will be something like this:
String baseUrl ="http://localhost/v1/deletePost/";
String url = baseUrl + "3" //Here you change the ID, can put as variable
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.DELETE, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
// Display the first 500 characters of the response string.
mTextView.setText("Response is: "+ response.substring(0,500));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
mTextView.setText("That didn't work!");
}
});

How to get JSON from server without send JSON request

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);

Volley PUT StringRequest not sent

I am sending a StringRequest using Volley to update a single record in mysql.The url is fine when i am sending the same request from postman i am getting result but when i send the request from android its not sent. I am not getting whats the issue.I am sendin two values that too iam sending it in url.Here is the code
StringRequest req = new StringRequest(Request.Method.PUT, url,new Response.Listener<String>() {
#Override
public void onResponse(String response) {
resp = Integer.parseInt(response.toString());
hidepDialog();
if(resp == 1){
Toast.makeText(getApplicationContext(),"Success",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getApplicationContext(),"Failure",Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});

Volley sending multiple requests tracking

I was going through volley library documentation with the following example
// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(this);
String url ="http://www.google.com";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
// Display the first 500 characters of the response string.
mTextView.setText("Response is: "+ response.substring(0,500));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
mTextView.setText("That didn't work!");
}
});
// Add the request to the RequestQueue.
queue.add(stringRequest);
My question is if i add an other request(similar request i.e. StringRequest) request to the queue, how can i map my request to response since the response is asynchronous.
1request --> 1response.
2request --> 2response.
I don't have any priorities for request and should be done concurrently (not sequential requests).

Android Volley: Unexpected response code 405

My Android Volley JsonObjectRequest runs into onErrorResponse with the issue:
BasicNetwork.performRequest: Unexpected response code 405 for MY_URL
My URL is valid. I have checked that with a browser and
I get there the expected JSON Object.
So the issue has to be on the client side.
The code 405 means:
Method Not Allowed The method specified in the Request-Line is not
allowed for the resource identified by the Request-URI. The response
MUST include an Allow header containing a list of valid methods for
the requested resource.
my code for JsonObjectRequest:
JsonObjectRequest jsonReq;
jsonReq = new JsonObjectRequest(URL_FEED, new JSONObject(),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
VolleyLog.v("Response:%n %s", response.toString(4));
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.v("ERROR:%n %s", error.getMessage());
}
});
// Adding request to volley request queue
NetworkController.getInstance().addToRequestQueue(jsonReq);
Do I have to add some information to the header? And if what for information?

The issue was that the request was set to POST by default.
The solution that worked for me:
JsonObjectRequest jsonReq = new JsonObjectRequest
(Request.Method.GET, URL_FEED, null, new Response.Listener<JSONObject>()
{
#Override
public void onResponse(JSONObject response)
{
Log.d("Server", "Läuft");
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error)
{
Log.d("Server","onErrorResponse");
}
});
NetworkController.getInstance().addToRequestQueue(jsonReq);

Use GET Method instead of POST it has worked for me.

I had the same issue, and I found out that my API URL was wrong.
So, my suggestion is to recheck the API URL.