Android/PHP: how to POST/GET JSON data from Android to php -

android/php: how post/get json data android php?

currently stuck @ point sending jsonobject data php getting null values in response.

what want:

i sending 'username' , 'password' android in form of jsonobject , want retrieve same data in jsonobject in php response.

here code snippet

android_file.java

defaulthttpclient httpclient=new defaulthttpclient();         httppost httppost=new httppost(register_user);         jsonobject jsonobject=new jsonobject();         httppost.setheader("accept", "application/json");         httppost.setheader("content-type", "application/json");         try {              jsonobject.put("username",username.gettext().tostring());             jsonobject.put("password",password.gettext().tostring());             stringentity se=new stringentity("json="+jsonobject.tostring());             //httppost.addheader("content-type", "application/x-www-form-urlencoded");             se.setcontentencoding(new basicheader(http.content_type,"application/json"));             httppost.setentity(se);            string req=se.tostring();              httpresponse response=httpclient.execute(httppost);               if(response!=null){                 inputstream is=response.getentity().getcontent();                 bufferedreader bufferedreader=new bufferedreader(new     inputstreamreader(is));                 stringbuilder sb=new stringbuilder();                 string line=null;                 while((line=bufferedreader.readline())!=null){                     sb.append(line+"\n");                 }                 this.message=sb.tostring();                 //toast.maketext(getbasecontext(), message, toast.length_long).show();             }          } catch (jsonexception e) {             e.printstacktrace();         } catch (clientprotocolexception e) {             e.printstacktrace();         } catch (ioexception e) {             e.printstacktrace();         } 

login_check.php

<?php include('../core/init.php');   // $contents = file_get_contents('php://input');    // $contents = utf8_encode($contents);    if($_post['json'])   {   $data=json_decode(stripslashes($_post['json']));   $username=$data['username'];   $password=$data['password']; $response=array('username'=>$username,'password'=>$password); echo json_encode($response);    }    else{    $no_data=array('none'=>'no data received'); echo json_encode($no_data);    }      ?> 

please let me know if doing wrong or missing point? in advance!

i dont know wrong code compared code mine working fine on diffrent apps , made changes code , hope works:

replace part:

        jsonobject.put("username",username.gettext().tostring());         jsonobject.put("password",password.gettext().tostring());         stringentity se=new stringentity("json="+jsonobject.tostring());         se.setcontentencoding(new basicheader(http.content_type,"application/json"));         httppost.setentity(se); 

with:

        list<namevaluepair> params = new arraylist<namevaluepair>();          params.add(new basicnamevaluepair("username", username.gettext().tostring()));          params.add(new basicnamevaluepair("password",password.gettext().tostring()));          httppost.setentity(new urlencodedformentity(params));  

and web service (i think problem here):

<?php include('../core/init.php');   // $contents = file_get_contents('php://input');    // $contents = utf8_encode($contents);    if(isset($_post['username']) && isset($_post['password']))   {       $username=$_post['username'];       $password=$_post['password'];       $response = array();        $response['username'] = $username;        $response['password'] = $password;       echo json_encode($response);   }   else{        $no_data=array();        $no_data['none']= 'no data received';        echo json_encode($no_data);   }  ?> 

please let me know if fixes problem.