Displaying the phone number of a contact in Android Contact Content Provider -

i trying write program display id, name , phone number of contact in android. far id , names of contact displayed number of contact doesn't. can me, below code program:

package com.example.oghenekaroedoh.provider;  import android.app.listactivity; import android.content.cursorloader; import android.database.cursor; import android.net.uri; import android.os.bundle; import android.provider.contactscontract; import android.util.log; import android.widget.cursoradapter; import android.widget.simplecursoradapter;  public class provider2activity extends listactivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_provider);          uri allcontacts = contactscontract.contacts.content_uri;          //query string our contacts         //uri allcontacts = uri.parse("content://contacts/people");          //declare our cursor         cursor c;          string[] projection = new string[]                 {contactscontract.contacts._id,                         contactscontract.contacts.display_name,                         contactscontract.contacts.has_phone_number};          //---detect android version         //---projection, filtering, , sorting         /* >>the second parameter of managedquery() method (third parameter cursorloader class)             controls how many columns returned query; parameter known projection            >>the third parameter of managedquery() method (fourth parameter cursorloader class)            enable specify sql clause filter result of query            >>the fourth parameter of managedquery() method (the fifth parameter cursorloader class)            enables specify sql order clause sort result of query, either in ascending or descending order         * */         if (android.os.build.version.sdk_int <11) {             //---if device ids running on os before honeycomb             //use managedquery() of activity class retrieve managed cursor             c = managedquery(allcontacts, projection, null, null, null);          }         else {             //---honeycomb , later use cursor loader class retrieve managed cursor---             cursorloader cursorloader = new cursorloader(                     this,                     allcontacts,                     projection,                     null,                     null ,                     null);             c = cursorloader.loadinbackground();         }          //create columns contacts display name , column         string[] columns = new string[] {                 contactscontract.contacts.display_name,                 contactscontract.contacts._id};          int[] views = new int[] {r.id.contactname, r.id.contactid};          simplecursoradapter adapter;          //detect android version again..s         if (android.os.build.version.sdk_int <11) {             //---if before honeycomb---             //use simplecursoradapter class map cursor view (like textviews imageviews e.t.c)             adapter = new simplecursoradapter(                     this, r.layout.activity_provider, c, columns, views);         }         else {             //---honeycomb , later---             ////use simplecursoradapter class map cursor view (like textviews imageviews e.t.c)             //with parameter known cursoradapter.flag_register_current_observer             adapter = new simplecursoradapter(                     this, r.layout.activity_provider, c, columns, views,                     cursoradapter.flag_register_content_observer);         }          this.setlistadapter(adapter);         printcontacts(c);     }      private void printcontacts(cursor c)     {         //---display contact id , name , phone number----         if (c.movetofirst()) {             do{                 //---get contact id , name                 string contactid = c.getstring(c.getcolumnindex(                         contactscontract.contacts._id));                 string contactdisplayname =                         c.getstring(c.getcolumnindex(                                 contactscontract.contacts.display_name));                 log.v("content providers", contactid + ", " +                         contactdisplayname);                  //---get phone number---                 int hasphone =                         c.getint(c.getcolumnindex(                                 contactscontract.contacts.has_phone_number));                 if (hasphone == 1) {                     cursor phonecursor =                             getcontentresolver().query(                                     contactscontract.commondatakinds.phone.content_uri, null,                                     contactscontract.commondatakinds.phone.contact_id + " = " +                             contactid, null, null);                     while (phonecursor.movetonext()) {                         log.v("content providers",                                 phonecursor.getstring(                                         phonecursor.getcolumnindex(                                                 contactscontract.commondatakinds.phone.number)));                     }                     phonecursor.close();                 }              } while (c.movetonext());         }     }  } 

i got example working adding customadapter myclassadapter extends arrayadapter, , populating arraylist of contact objects.

import android.app.listactivity; import android.content.contentresolver; import android.content.context; import android.content.cursorloader; import android.database.cursor; import android.net.uri; import android.os.bundle; import android.provider.contactscontract; import android.util.log; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.arrayadapter; import android.widget.textview;  import java.util.arraylist;  public class provider2activity extends listactivity {      arraylist<contact> contacts;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_provider2);          contacts = new arraylist<contact>();          uri allcontacts = contactscontract.contacts.content_uri;          //declare our cursor         cursor c;          string[] projection = new string[]                 {contactscontract.contacts._id,                         contactscontract.contacts.display_name,                         contactscontract.contacts.has_phone_number};           /* >>the second parameter of managedquery() method (third parameter cursorloader class)             controls how many columns returned query; parameter known projection            >>the third parameter of managedquery() method (fourth parameter cursorloader class)            enable specify sql clause filter result of query            >>the fourth parameter of managedquery() method (the fifth parameter cursorloader class)            enables specify sql order clause sort result of query, either in ascending or descending order         * */         if (android.os.build.version.sdk_int <11) {             //---if device ids running on os before honeycomb             //use managedquery() of activity class retrieve managed cursor             c = managedquery(allcontacts, projection, null, null, null);          }         else {             //---honeycomb , later use cursor loader class retrieve managed cursor---             cursorloader cursorloader = new cursorloader(                     this,                     allcontacts,                     projection,                     null,                     null ,                     null);             c = cursorloader.loadinbackground();         }          printcontacts(c);          myclassadapter adapter;           //detect android version again..         if (android.os.build.version.sdk_int <11) {             //---if before honeycomb---              adapter = new myclassadapter(                     this, r.layout.row_line, contacts);         }         else {             //---honeycomb , later---              adapter = new myclassadapter(                     this, r.layout.row_line, contacts);         }          this.setlistadapter(adapter);      }      private void printcontacts(cursor c)     {         contentresolver cr = getcontentresolver();         //---display contact id , name , phone number----         if (c.movetofirst()) {             do{                 //---get contact id , name                 string contactid = c.getstring(c.getcolumnindex(                         contactscontract.contacts._id));                 string contactdisplayname =                         c.getstring(c.getcolumnindex(                                 contactscontract.contacts.display_name));                 log.v("content providers", contactid + ", " +                         contactdisplayname);                  string contactdisplayphone = "";                     //---get phone number---                 int hasphone =                         c.getint(c.getcolumnindex(                                 contactscontract.contacts.has_phone_number));                 if (hasphone == 1) {                     cursor phonecursor =                             getcontentresolver().query(                                     contactscontract.commondatakinds.phone.content_uri, null,                                     contactscontract.commondatakinds.phone.contact_id + " = " +                                             contactid, null, null);                     while (phonecursor.movetonext()) {                         log.v("content providers",                                 contactdisplayphone = phonecursor.getstring(                                         phonecursor.getcolumnindex(                                                 contactscontract.commondatakinds.phone.number)));                     }                     phonecursor.close();                  }                 contacts.add(new contact(contactdisplayname, contactid, contactdisplayphone));              } while (c.movetonext());         }     }      public class contact{         public string contactname = "";         public string contactid = "";         public string contactnumber = "";         public contact(string name, string id, string number){              contactname = name;             contactid = id;             contactnumber = number;         }     }      public class myclassadapter extends arrayadapter<contact> {          private class viewholder {             private textview name;             private textview id;             private textview number;         }          public myclassadapter(context context, int textviewresourceid, arraylist<contact> items) {             super(context, textviewresourceid, items);         }          public view getview(int position, view convertview, viewgroup parent) {             viewholder viewholder;             if (convertview == null) {                 convertview = layoutinflater.from(this.getcontext())                         .inflate(r.layout.row_line, parent, false);                  viewholder = new viewholder();                 viewholder.name = (textview) convertview.findviewbyid(r.id.contactname);                 viewholder.id = (textview) convertview.findviewbyid(r.id.contactid);                 viewholder.number = (textview) convertview.findviewbyid(r.id.contactnumber);                  convertview.settag(viewholder);             } else {                 viewholder = (viewholder) convertview.gettag();             }              contact item = getitem(position);             if (item!= null) {                 viewholder.name.settext(item.contactname);                 viewholder.id.settext(item.contactid);                 viewholder.number.settext(item.contactnumber);             }              return convertview;         }     }  } 

row_line.xml:

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:orientation="vertical">      <textview android:id="@+id/contactname"         android:textsize="16sp"         android:textstyle="bold"         android:layout_width="match_parent"         android:layout_height="wrap_content"/>      <textview android:id="@+id/contactid"         android:textsize="16sp"         android:layout_width="match_parent"         android:layout_height="wrap_content"/>      <textview android:id="@+id/contactnumber"         android:textsize="16sp"         android:layout_width="match_parent"         android:layout_height="wrap_content"/> </linearlayout> 

activity_provider2.xml:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"     android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     android:paddingbottom="@dimen/activity_vertical_margin" tools:context=".provider2activity">      <listview          android:id="@android:id/list"          android:layout_height="wrap_content"          android:layout_width="match_parent">      </listview>  </relativelayout>