how to send post params using volley in android?

Question

Hello i am developing an app using volley in android.I want send some params to server using POST method But i don't know how to do it. I am using an activity in that activity class i have created a function for sending data to the server & getting the response,

Here is the code

 package com.example.healthcoach;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.Response.Listener;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class HealthCreateAccount extends Activity implements OnClickListener {
 EditText et_fname, et_lname, et_email, et_password;
 Button btn_create, btn_cancel;
 String url = "http://192.168.1.32/get.php";
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 // TODO Auto-generated method stub
 super.onCreate(savedInstanceState);
 setContentView(R.layout.create_user);
 initViews();
 }
 public void initViews() {
 btn_create = (Button) findViewById(R.id.signup_btn);
 btn_cancel = (Button) findViewById(R.id.signup_btn_cancel);
 et_fname = (EditText) findViewById(R.id.signnup_et_fname);
 et_lname = (EditText) findViewById(R.id.signnup_et_lname);
 et_email = (EditText) findViewById(R.id.signnup_et_email);
 et_password = (EditText) findViewById(R.id.signnup_et_pass);
 btn_cancel.setOnClickListener(this);
 btn_create.setOnClickListener(this);
 }
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 int id = v.getId();
 switch (id) {
 case R.id.signup_btn:
 sendData();
 Intent bsetup_intent=new Intent(HealthCreateAccount.this,HealthBasicSetUp.class);
 startActivity(bsetup_intent);
 break;
 case R.id.signup_btn_cancel:
 break;
 default:
 break;
 }
 }
 public void sendData()
 {
 RequestQueue queue = Volley.newRequestQueue(this);
 StringRequest str=new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
 @Override
 public void onResponse(String arg0) {
 // TODO Auto-generated method stub
 }
 }, new Response.ErrorListener() {
 @Override
 public void onErrorResponse(VolleyError arg0) {
 // TODO Auto-generated method stub
 }
 });
 }
}

Answer 1

You can override StringRequest's getParams() method.

UDPATE

public class HttpPostStringRequest extends StringRequest {
 private Map<String, String> mParams = new HashMap<String, String>();
 public HttpPostStringRequest(int method, String url,
 Listener<String> listener, ErrorListener errorListener, Map<String, String> params) {
 super(method, url, listener, errorListener);
 mParams.putAll(params);
 }
 @Override
 protected Map<String, String> getParams() throws AuthFailureError {
 return mParams;
 }
}

you can give your post params as a map(like key-value pairs) to the constructor

• TechChain: but i an not extending the request class?
• jobcrazy: You need to extending StringRequest, cause default implementation of getParams() in Request is just return null.
• TechChain: can you post some sample code for that like how i would be calling that class from my activity???

Answer 2

just override getParams like this
its work with Json and String request

JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST,
 url, null,
 new Response.Listener<JSONObject>() {
 @Override
 public void onResponse(JSONObject response) {
 Log.d(TAG, response.toString());
 pDialog.hide();
 }
 }, new Response.ErrorListener() {
 @Override
 public void onErrorResponse(VolleyError error) {
 VolleyLog.d(TAG, "Error: " + error.getMessage());
 pDialog.hide();
 }
 }) {
 @Override
 protected Map<String, String> getParams() {
 Map<String, String> params = new HashMap<String, String>();
 params.put("name", "Androidhive");
 params.put("email", "[email protected]");
 params.put("password", "password123");
 return params;
 }
 };