Read Contact from Contact Book

• Add uses-permission in AndroidManifest.xml

 <uses-permission android:name="android.permission.READ_CONTACTS" />

• Create Contacts.java

public class Contacts {

       String contactName = "";

       String contactNumber = "";

       public String getContactName() {

             return contactName;

       }

       public void setContactName(String contactName) {

             this.contactName = contactName;

       }

       public String getContactNumber() {

             return contactNumber;

       }

       public void setContactNumber(String contactNumber) {

             this.contactNumber = contactNumber;

       }

}

• Add Method getContactList() in Activity 

import android.provider.ContactsContract.Data;

private List<Contacts> getContactList() {

             ArrayList<Contacts> contactList = new ArrayList<Contacts>();

             @SuppressWarnings("unused")

             Uri contactUri = ContactsContract.Contacts.CONTENT_URI;

             String[] PROJECTION = new String[] { ContactsContract.Contacts._ID,

                           ContactsContract.Contacts.DISPLAY_NAME,

                           ContactsContract.Contacts.HAS_PHONE_NUMBER, };

             String SELECTION = ContactsContract.Contacts.HAS_PHONE_NUMBER + "='1'";

             Cursor cursorContacts = getContentResolver().query(

                           ContactsContract.Contacts.CONTENT_URI, PROJECTION, SELECTION,

                           null, null);

             if (cursorContacts.getCount() > 0) {

                    while (cursorContacts.moveToNext()) {

                           Contacts mContact = new Contacts();

                           int nameFieldColumnIndex = 0;

                           int numberFieldColumnIndex = 0;

                           String contactId = cursorContacts.getString(cursorContacts

                                        .getColumnIndex(ContactsContract.Contacts._ID));

                           nameFieldColumnIndex = cursorContacts

                                        .getColumnIndex(PhoneLookup.DISPLAY_NAME);

                           if (nameFieldColumnIndex > -1) {

                                 mContact.setContactName(cursorContacts

                                               .getString(nameFieldColumnIndex));

                           }

                           PROJECTION = new String[] { Phone.NUMBER };

                           final Cursor phone = managedQuery(Phone.CONTENT_URI,

                                        PROJECTION, Data.CONTACT_ID + "=?",

                                        new String[] { String.valueOf(contactId) }, null);

                           if (phone.moveToFirst()) {

                                 while (!phone.isAfterLast()) {

                                        numberFieldColumnIndex = phone

                                                      .getColumnIndex(Phone.NUMBER);

                                        if (numberFieldColumnIndex > -1) {

                                               mContact.setContactNumber(phone

                                                            .getString(numberFieldColumnIndex));

                                               phone.moveToNext();

                                               contactList.add(mContact);

                                        }

                                 }

                           }

                           phone.close();

                    }

                    cursorContacts.close();

             }

             return contactList;

       }