android - How to solve the code with HttpUrlConnection and all new for api 23 -

i trying make login check sever have found code internet httpclient , other deprecated api 23 , higher. unable modify httpurlconnection,libray , updates.

main activity:

package com.example.login;  import java.util.arraylist;  import org.apache.http.namevaluepair; import org.apache.http.message.basicnamevaluepair;  import android.app.activity; import android.os.bundle; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.textview;  public class loginlayout extends activity {     edittext un,pw;     textview error;     button ok;     /** called when activity first created. */     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);         un=(edittext)findviewbyid(r.id.et_un);         pw=(edittext)findviewbyid(r.id.et_pw);         ok=(button)findviewbyid(r.id.btn_login);         error=(textview)findviewbyid(r.id.tv_error);          ok.setonclicklistener(new view.onclicklistener() {              @override             public void onclick(view v) {                 // todo auto-generated method stub                  arraylist<namevaluepair> postparameters = new arraylist<namevaluepair>();                 postparameters.add(new basicnamevaluepair("username", un.gettext().tostring()));                 postparameters.add(new basicnamevaluepair("password", pw.gettext().tostring()));                  string response = null;                 try {                     response = customhttpclient.executehttppost("<target page url>", postparameters);                     string res=response.tostring();                     res= res.replaceall("\\s+","");                     if(res.equals("1"))                         error.settext("correct username or password");                     else                         error.settext("sorry!! incorrect username or password");                 } catch (exception e) {                     un.settext(e.tostring());                 }              }         });     } } 

customclient class:

import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstreamreader; import java.net.uri; 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.conn.params.connmanagerparams; import org.apache.http.impl.client.defaulthttpclient; import org.apache.http.params.httpconnectionparams; import org.apache.http.params.httpparams;  public class customhttpclient {     /** time takes our client timeout */     public static final int http_timeout = 30 * 1000; // milliseconds      /** single instance of our httpclient */     private static httpclient mhttpclient;      /**      * our single instance of our httpclient object.      *      * @return httpclient object connection parameters set      */     private static httpclient gethttpclient() {         if (mhttpclient == null) {             mhttpclient = new defaulthttpclient();             final httpparams params = mhttpclient.getparams();             httpconnectionparams.setconnectiontimeout(params, http_timeout);             httpconnectionparams.setsotimeout(params, http_timeout);             connmanagerparams.settimeout(params, http_timeout);         }         return mhttpclient;     }      /**      * performs http post request specified url      * specified parameters.      *      * @param url web address post request      * @param postparameters parameters send via request      * @return result of request      * @throws exception      */     public static string executehttppost(string url, arraylist<namevaluepair> postparameters) throws exception {         bufferedreader in = null;         try {             httpclient client = gethttpclient();             httppost request = new httppost(url);             urlencodedformentity formentity = new urlencodedformentity(postparameters);             request.setentity(formentity);             httpresponse response = client.execute(request);             in = new bufferedreader(new inputstreamreader(response.getentity().getcontent()));              stringbuffer sb = new stringbuffer("");             string line = "";             string nl = system.getproperty("line.separator");             while ((line = in.readline()) != null) {                 sb.append(line + nl);             }             in.close();              string result = sb.tostring();             return result;         } {             if (in != null) {                 try {                     in.close();                 } catch (ioexception e) {                     e.printstacktrace();                 }             }         }     }      /**      * performs http request specified url.      *      * @param url web address post request      * @return result of request      * @throws exception      */     public static string executehttpget(string url) throws exception {         bufferedreader in = null;         try {             httpclient client = gethttpclient();             httpget request = new httpget();             request.seturi(new uri(url));             httpresponse response = client.execute(request);             in = new bufferedreader(new inputstreamreader(response.getentity().getcontent()));              stringbuffer sb = new stringbuffer("");             string line = "";             string nl = system.getproperty("line.separator");             while ((line = in.readline()) != null) {                 sb.append(line + nl);             }             in.close();              string result = sb.tostring();             return result;         } {             if (in != null) {                 try {                     in.close();                 } catch (ioexception e) {                     e.printstacktrace();                 }             }         }     } } 

while has been deprecated can still use adding gradle file:

android {   compilesdkversion 23   buildtoolsversion "23.0.2"   uselibrary 'org.apache.http.legacy'    ... }