java - Asyntask in JSON Parsing -


this sample code, make json parsing class parse data given link. 

package com.billosuch.listviewblogpost;  import java.util.arraylist;  import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject;  import android.app.activity; import android.os.bundle; import android.util.log; import android.widget.listview;  public class listviewblogpost extends activity {      // url make request     private static string url = "http://api.androidhive.info/contacts/";      // json node names     private static final string tag_contacts = "contacts";     private static final string tag_id = "id";     private static final string tag_name = "name";     private static final string tag_email = "email";     private static final string tag_address = "address";     private static final string tag_gender = "gender";     private static final string tag_phone = "phone";     private static final string tag_phone_mobile = "mobile";     private static final string tag_phone_home = "home";     private static final string tag_phone_office = "office";      // contacts jsonarray     jsonarray contacts = null;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);         arraylist<searchresults> searchresultss = new arraylist<searchresults>();         final listview lv1 = (listview) findviewbyid(r.id.listview01);          jsonparser jparser = new jsonparser();         jsonobject json = jparser.getjsonfromurl(url);          // looping through contacts          log.d("*********osr", "b4 try");          try {              contacts = json.getjsonarray(tag_contacts);              (int = 0; < contacts.length(); i++) {                  searchresults osr = new searchresults();                 jsonobject c = contacts.getjsonobject(i);                  osr.setid(c.getstring(tag_id));                 osr.setname(c.getstring(tag_name));                 osr.setemail(c.getstring(tag_email));                 osr.setaddress(c.getstring(tag_address));                 osr.setgender(c.getstring(tag_gender));                  jsonobject phone = c.getjsonobject(tag_phone);                  osr.setphone_mobile(phone.getstring(tag_phone_mobile));                 osr.setphone_home(phone.getstring(tag_phone_home));                 osr.setphone_office(phone.getstring(tag_phone_office));                  searchresultss.add(osr);                  log.d("*********osr", osr.getname());              }         } catch (jsonexception e) {             // todo auto-generated catch block             e.printstacktrace();         }          log.d("*********osr", "after try");         lv1.setadapter(new mycustombaseadapter(this, searchresultss));      }   }

this code showing me warning in asyntask. want supported on ics , jellybean.

skipped 391 frames!  application may doing work on main thread.

change code below 

package com.billosuch.listviewblogpost;      import java.util.arraylist;      import org.json.jsonarray;     import org.json.jsonexception;     import org.json.jsonobject;      import android.app.activity;     import android.os.bundle;     import android.util.log;     import android.widget.listview;      public class listviewblogpost extends activity {          // url make request         private static string url = "http://api.androidhive.info/contacts/";          // json node names         private static final string tag_contacts = "contacts";         private static final string tag_id = "id";         private static final string tag_name = "name";         private static final string tag_email = "email";         private static final string tag_address = "address";         private static final string tag_gender = "gender";         private static final string tag_phone = "phone";         private static final string tag_phone_mobile = "mobile";         private static final string tag_phone_home = "home";         private static final string tag_phone_office = "office";         final listview lv1;         arraylist<searchresults> searchresultss;          // contacts jsonarray         jsonarray contacts = null;          @override         public void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.main);             searchresultss = new arraylist<searchresults>();             lv1 = (listview) findviewbyid(r.id.listview01);             new myasync(youractivity.this).execute();          }          public class myasync extends asynctask<void, integer, void> {                public myasync(activity activity) {                 this.activity = activity;                   context = activity;                 dialog = new progressdialog(context);               }              /** progress dialog show user backup processing. */             private progressdialog dialog;             /** application context. */             private activity activity;             private context context;                protected void onpreexecute() {                 // todo auto-generated method stub                 super.onpreexecute();                   }              @override             protected void doinbackground(void... params) {                 // todo auto-generated method stub        jsonparser jparser = new jsonparser();             jsonobject json = jparser.getjsonfromurl(url);              // looping through contacts              log.d("*********osr", "b4 try");              try {                  contacts = json.getjsonarray(tag_contacts);                  (int = 0; < contacts.length(); i++) {                      searchresults osr = new searchresults();                     jsonobject c = contacts.getjsonobject(i);                      osr.setid(c.getstring(tag_id));                     osr.setname(c.getstring(tag_name));                     osr.setemail(c.getstring(tag_email));                     osr.setaddress(c.getstring(tag_address));                     osr.setgender(c.getstring(tag_gender));                      jsonobject phone = c.getjsonobject(tag_phone);                      osr.setphone_mobile(phone.getstring(tag_phone_mobile));                     osr.setphone_home(phone.getstring(tag_phone_home));                     osr.setphone_office(phone.getstring(tag_phone_office));                      searchresultss.add(osr);                      log.d("*********osr", osr.getname());                  }             } catch (jsonexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }              log.d("*********osr", "after try");                   return null;             }              @override             protected void onpostexecute(void result) {                 // todo auto-generated method stub                 super.onpostexecute(result);                              lv1.setadapter(new mycustombaseadapter(this, searchresultss));                                 }              }     }

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