php - Not getting the response -

i creating application in send parameters web service right running on local host , gives me json response. somehow not working after line httpresponse httpresponse = httpclient.execute(httppost);. can please. ps. webservice working absolutely fine

test_class.java

package com.vitarkasolutions.tracker;   import java.io.ioexception; import java.io.inputstream; import java.io.inputstreamreader; import java.io.reader; import java.io.unsupportedencodingexception; import java.util.arraylist; import java.util.list;  import org.apache.http.httpentity; import org.apache.http.httpresponse; import org.apache.http.httpstatus; import org.apache.http.namevaluepair; import org.apache.http.client.clientprotocolexception; import org.apache.http.client.entity.urlencodedformentity; import org.apache.http.client.methods.httppost; import org.apache.http.impl.client.defaulthttpclient; import org.apache.http.message.basicnamevaluepair;  import android.app.activity; import android.os.asynctask; import android.os.bundle; import android.util.log; import android.view.view; import android.view.view.onclicklistener; import android.widget.button;  import com.google.gson.gson;   public class test_class extends activity{     final static string url = "http://10.0.2.2/tracker/index.php" ;     string xyz ="";     string tag ="login";         string name="varun";     string email="varun@gmail.com";     int lat= 10;     int lang = 20;     int phone_no= 10;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.test);      button btn = (button)findviewbyid(r.id.button1);         btn.setonclicklistener(new onclicklistener() {          @override         public void onclick(view v) {             // todo auto-generated method stub             registeruser(name, email, tag, phone_no, lat, lang);             }     });      }  @suppresswarnings("unchecked") public void registeruser(string name, string email,string register_tag, int phone_no ,int lat , int lang ) {              // building parameters             list<namevaluepair> params = new arraylist<namevaluepair>();             params.add(new basicnamevaluepair("tag", register_tag));             params.add(new basicnamevaluepair("name", name));             params.add(new basicnamevaluepair("email", email));             params.add(new basicnamevaluepair("phone_no",string.valueof(phone_no)));             params.add(new basicnamevaluepair("lat",string.valueof(lat) ));             params.add(new basicnamevaluepair("lang", string.valueof(lang)));              try {             parsing data = new parsing();             data.execute(params);                 //asynctask parsing =new parsing().execute(params);             } catch (illegalstateexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }           }   public  class parsing extends asynctask<list<? extends namevaluepair>, void, void> {         // making http request      @override     protected void doinbackground(list<? extends namevaluepair>... params) {         // todo auto-generated method stub          log.e("tag", "parse function called");                     try{                 // defaulthttpclient          defaulthttpclient httpclient = new defaulthttpclient();         httppost httppost = new httppost(url);         log.d("tag", "post");         httppost.setentity(new urlencodedformentity(params[0]));             log.d("tag", "entity");         httpresponse httpresponse = httpclient.execute(httppost);                            log.d("tag", "response");         final int statuscode = httpresponse.getstatusline().getstatuscode();                  if (statuscode != httpstatus.sc_ok)                  {                      log.w(getclass().getsimplename(), "error " + statuscode + " url " + url);                      log.d("not connected", "connected");                 }else{                     log.d("connected", "connected");                 }                 log.d("con", "connected");                 httpentity httpentity = httpresponse.getentity();                                                               inputstream = httpentity.getcontent();                       reader reader = new inputstreamreader(is);                  log.e("tag2", is.tostring());                           gson gson = new gson();                                               user user = gson.fromjson(reader,user.class);                     log.e("tag3", "done");                  log.e("tag4", user.tostring());                  log.e("tag4", user.name);                  log.d("tag4", user.email);          }          catch  (unsupportedencodingexception e) {             e.printstacktrace();         } catch (clientprotocolexception e) {             e.printstacktrace();         } catch (ioexception e) {             e.printstacktrace();         }         return null;  }        }  } 

use code sample webservice , download jersey jar , add lib   

download using:

https://jersey.java.net/download.html

add jar file using following procedure :-

right click on project--->build path--->configure build path...--->in left side have choose java build path--->libraries--->add external jars--->ok--->ok

hope resolve issue

  package com.example.login;   import java.io.bufferedreader;   import java.io.ioexception;   import java.io.inputstream;   import java.io.inputstreamreader;   import java.util.arraylist;    import org.apache.http.httpresponse;   import org.apache.http.namevaluepair;   import org.apache.http.client.httpclient;   import org.apache.http.client.entity.urlencodedformentity;   import org.apache.http.client.methods.httpget;   import org.apache.http.client.methods.httppost;   import org.apache.http.client.methods.httpput;   import org.apache.http.impl.client.defaulthttpclient;   import org.apache.http.message.basicnamevaluepair;   import org.apache.http.params.basichttpparams;   import org.apache.http.params.httpconnectionparams;   import org.apache.http.params.httpparams;   import org.json.jsonexception;   import org.json.jsonobject;    import android.app.activity;   import android.app.alertdialog;   import android.app.progressdialog;   import android.content.context;   import android.content.dialoginterface;   import android.content.intent;   import android.os.asynctask;   import android.os.bundle;   import android.util.log;   import android.view.view;   import android.widget.button;   import android.widget.edittext;   import android.widget.imageview;   import android.widget.toast;   import com.example.login.connectiondetector;   public class mainactivity extends activity  { public edittext uname,pwd; imageview btnlog1; public button btncancel1; public string db_select;  string muname;  string mpwd; string temp; intent intobj; intent intent = null;    boolean isinternetpresent = false; connectiondetector cd;  private string service_url = "http://100.2.1.97:8080/database/path"; //private string service_url = "http://10.1.1.138:8080/database/path"; private final string tag = "mainactivity";  @override protected void oncreate(bundle savedinstancestate)  {     super.oncreate(savedinstancestate);     mainactivity.this.setcontentview(r.layout.activity_main);     uname=(edittext)findviewbyid(r.id.edittext1);     pwd=(edittext)findviewbyid(r.id.edittext2);     btnlog1=(imageview)findviewbyid(r.id.login);     //btncancel1=(button)findviewbyid(r.id.button2);     //service_url=serverurl.url+"/msd";      btnlog1.setonclicklistener(new view.onclicklistener()     {                    @override         public void onclick(view v)          {             muname=uname.gettext().tostring();             mpwd=pwd.gettext().tostring();  //                 display("login clicked");             if(!muname.equalsignorecase("") &&        !mpwd.equalsignorecase(""))             {                 cd = new          connectiondetector(getapplicationcontext());                 isinternetpresent = cd.isconnectingtointernet();                 //toast.maketext(mainactivity.this,      isinternetpresent, toast.length_long).show();                 if(isinternetpresent)                 {                   try                 {                     validat_user(muname,mpwd);                  }                 catch(exception e)                 {                     display("network error.\nplease check       network settings.");                     uname.settext("");                     pwd.settext("");                 }                 }                 else                 {                     display("no internet connection...");                 }              }             else             {                 display("please enter data in required      fields...");             }         }     });  } public void display(string msg)  {     toast.maketext(mainactivity.this, msg, toast.length_long).show(); }   private void validat_user(string stg1, string stg2) {     db_select=stg1;     webservicetask wst = new webservicetask(webservicetask.post_task, this, "login         in progress...");      wst.addnamevaluepair("emp_id", stg1);     wst.addnamevaluepair("emp_pwd", stg2);      wst.execute(new string[] { service_url });  } @suppresswarnings("deprecation") public void no_net() {     display( "no network connection");     final alertdialog alertdialog = new       alertdialog.builder(mainactivity.this).create();     alertdialog.settitle("no internet connection");     alertdialog.setmessage("you don't have internet connection.\nelse please      check internet connection settings.");     //alertdialog.seticon(r.drawable.error_info);     alertdialog.setcancelable(false);     alertdialog.setbutton("close", new dialoginterface.onclicklistener()      {         public void onclick(dialoginterface dialog, int which)         {                alertdialog.cancel();             mainactivity.this.finish();             system.exit(0);         }     });     alertdialog.setbutton2("use local database", new       dialoginterface.onclicklistener()      {         public void onclick(dialoginterface dialog, int which)         {             display( "accessing local database.....");             alertdialog.cancel();         }     });     alertdialog.show(); }    private class webservicetask extends asynctask<string, integer, string> {      public static final int post_task = 1;      private static final string tag = "webservicetask";      // connection timeout, in milliseconds (waiting connect)     private static final int conn_timeout =3000;      // socket timeout, in milliseconds (waiting data)     private static final int socket_timeout = 5000;      private int tasktype = post_task;     private context mcontext = null;     private string processmessage = "processing...";      private arraylist<namevaluepair> params = new arraylist<namevaluepair>();      private progressdialog pdlg = null;      public webservicetask(int tasktype, context mcontext, string processmessage) {          this.tasktype = tasktype;         this.mcontext = mcontext;         this.processmessage = processmessage;     }      public void addnamevaluepair(string name, string value) {          params.add(new basicnamevaluepair(name, value));     }      @suppresswarnings("deprecation")     private void showprogressdialog() {          pdlg = new progressdialog(mcontext);         pdlg.setmessage(processmessage);         pdlg.setprogressdrawable(mcontext.getwallpaper());         pdlg.setprogressstyle(progressdialog.style_spinner);         pdlg.setcancelable(false);         pdlg.show();      }      @override     protected void onpreexecute() {          showprogressdialog();      }      protected string doinbackground(string... urls) {          string url = urls[0].tostring();         string result = "";         httpresponse response = doresponse(url);         if (response == null) {             return result;         } else {              try {                  result = inputstreamtostring(response.getentity().getcontent());              } catch (illegalstateexception e) {                 log.e(tag, e.getlocalizedmessage(), e);              } catch (ioexception e) {                 log.e(tag, e.getlocalizedmessage(), e);             }             catch(exception e)             {                 log.e(tag, e.getlocalizedmessage(), e);             }          }          return result;     }      @override     protected void onpostexecute(string response) {          handleresponse(response);         pdlg.dismiss();      }      // establish connection , socket (data retrieval) timeouts     private httpparams gethttpparams() {          httpparams htpp = new basichttpparams();          httpconnectionparams.setconnectiontimeout(htpp, conn_timeout);         httpconnectionparams.setsotimeout(htpp, socket_timeout);          return htpp;     }      private httpresponse doresponse(string url) {          // use our connection , data timeouts parameters our         // defaulthttpclient         httpclient httpclient = new defaulthttpclient(gethttpparams());          httpresponse response = null;          try {             switch (tasktype) {              case post_task:                  httppost httppost= new httppost(url);                 httppost.setentity(new urlencodedformentity(params));                 response = httpclient.execute(httppost);                  break;             }         }          catch (exception e) {         //  display("remote database can not connected.\nplease check network      connection.");              log.e(tag, e.getlocalizedmessage(), e);             return null;          }          return response;     }      private string inputstreamtostring(inputstream is) {          string line = "";         stringbuilder total = new stringbuilder();          // wrap bufferedreader around inputstream         bufferedreader rd = new bufferedreader(new inputstreamreader(is));          try {             // read response until end             while ((line = rd.readline()) != null) {                 total.append(line);             }         } catch (ioexception e) {             log.e(tag, e.getlocalizedmessage(), e);         }         catch(exception e)         {             log.e(tag, e.getlocalizedmessage(), e);         }          // return full string         return total.tostring();     }    }    public void handleresponse(string response)     {     //display("response:"+response);     if(!response.equalsignorecase(""))     {         jsonobject jso;         try {             jso = new jsonobject(response);                   string status = jso.getstring("status");           //     display("welcome : "+uname);                 if( status.equalsignorecase("") || status==null ||      status.equalsignorecase("failed"))                 {                     reset();                 }                 else                 {                     //display(status);                     intobj=new      intent(mainactivity.this,pdf.class);                     startactivity(intobj);                     mainactivity.this.finish();                      }               }         catch (jsonexception e1) {             // todo auto-generated catch block             log.e(tag, e1.getlocalizedmessage(), e1);         }         catch(exception e)         {             log.e(tag, e.getlocalizedmessage(), e);         }       }     else     {         display("could not able reach server!");     }       }    public void reset()     {     display("entered user id / password incorrect.\nplease enter valid user id &      password.");      pwd.settext("");     uname.settext("");    }     }