Android application with phone book synchronization?

Question

I am creating one android test application , in which i have one button. On button click ,i want to synchronize phonebook records with my local database.If record in phone b

Answer 1

public static List fetchContacts(Context context) { final String DISPLAY_NAME = ContactsContract.Contacts.DISPLAY_NAME_PRIMARY;

    final String FILTER = DISPLAY_NAME + " NOT LIKE '%@%'";

    final String ORDER = String.format("%1$s COLLATE NOCASE", DISPLAY_NAME);
    final String[] PROJECTION = {
            ContactsContract.Contacts._ID,
            DISPLAY_NAME,
            ContactsContract.Contacts.HAS_PHONE_NUMBER
    };
    ArrayList contacts = new ArrayList<>();
    try {
        ContentResolver cr = context.getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, PROJECTION, FILTER, null, ORDER);
        if (cursor != null && cursor.moveToFirst()) {
            do {
                MyContact contact = new MyContact();
                // get the contact's information
                String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
                contact.setContactId(id);

                String name = cursor.getString(cursor.getColumnIndex(DISPLAY_NAME));
                contact.setUserName(name);
                Integer hasPhone = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
                // get the user's email address
                String email = null;
                Cursor ce = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Email.DATA},
                        ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", new String[]{id}, null);
                if (ce != null && ce.moveToFirst()) {
                    email = ce.getString(ce.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
                    ce.close();
                }
                contact.setEmailAddress(email);
                // get the user's phone number
                String phone = null;
                if (hasPhone > 0) {
                    Cursor cp = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER,
                                    ContactsContract.CommonDataKinds.Phone.CONTACT_LAST_UPDATED_TIMESTAMP,
                                    ContactsContract.CommonDataKinds.Phone.PHOTO_URI},
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);
                    if (cp != null && cp.moveToFirst()) {
                        phone = cp.getString(cp.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

                        String timeStamp = cp.getString(cp.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_LAST_UPDATED_TIMESTAMP));
                        contact.setLastUpdateTimestamp(timeStamp);

                        String photoUri = cp.getString(cp.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
                        contact.setPhotoUri(photoUri);

                        cp.close();
                    }
                }
                contact.setPhone_number(phone);
                contacts.add(contact);
            } while (cursor.moveToNext());
            // clean up cursor
            cursor.close();
            Utils.list = contacts;
            sendMessage(context);
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return contacts;
}