Question

I want to display all native contacts in a list and make user to add contacts from the list (Multiple contacts)to my application database.How to dothis can any one give me idea or share some code..
thanks in advance..

Answer 1

I used this code on Android 2.1. It pulls down anyone who has a phone number (as defined by the String SELECTION variable) and returns a List of type Person. Person is an object that held the name and phone number of the user. You will have to implement a Person object in order to use this code, but it works perfectly:

public List<Person> getContactList(){
        ArrayList<Person> contactList = new ArrayList<Person>();

        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 contacts = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, PROJECTION, SELECTION, null, null);


        if (contacts.getCount() > 0)
        {
            while(contacts.moveToNext()) {
                Person aContact = new Person();
                int idFieldColumnIndex = 0;
                int nameFieldColumnIndex = 0;
                int numberFieldColumnIndex = 0;

                String contactId = contacts.getString(contacts.getColumnIndex(ContactsContract.Contacts._ID));

                nameFieldColumnIndex = contacts.getColumnIndex(PhoneLookup.DISPLAY_NAME);
                if (nameFieldColumnIndex > -1)
                {
                    aContact.setName(contacts.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)
                        {
                            aContact.setPhoneNum(phone.getString(numberFieldColumnIndex));
                            phone.moveToNext();
                            TelephonyManager mTelephonyMgr;
                            mTelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
                            if (!mTelephonyMgr.getLine1Number().contains(aContact.getPhoneNum()))
                            {
                                contactList.add(aContact);  
                            }
                        }
                    }
                }
                phone.close();
            }

            contacts.close();
        }

        return contactList;
    }

EDIT: A rudimentary Person class:

public class Person {
    String myName = "";
    String myNumber = "";

    public String getName() {
        return myName;
    }

    public void setName(String name) {
        myName = name;
    }

    public String getPhoneNum() {
        return myNumber;
    }

    public void setPhoneNum(String number) {
        myNumber = number;
    }
}