What is the best way to get distinct contacts in Android

Question

I am successfully storing contacts in parse.com dashboard data browser by this code.

public void readContacts(){
         ContentResolver cr = getContentReso         


        

Answer 1

Here is the Solution that i worked out for you.... You can go through the logcat for information about how it works 100%

import java.util.ArrayList;

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Contacts;

public class MainActivity extends Activity {
    String ClsSimPhonename = null;
    String ClsSimphoneNo = null;

    public static ArrayList phonecontact = new ArrayList();
    public static ArrayList simcontact = new ArrayList();
    public static ArrayList totalcontact = new ArrayList();
    public static ArrayList repeatedcontact = new ArrayList();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // get phone contact...
        getphonecontact();
        // get sim contact...
        getsimcard_contact();

        System.out.println("phone??? " + phonecontact);
        System.out.println("sim??? " + simcontact);

        System.out.println("sim_size??? " + simcontact.size());
        System.out.println("phone_size??? " + phonecontact.size());
        System.out.println("totalcontact_size??? " + totalcontact.size());

        // filter process beigins here....
        nowFilterContact();

    }

    private void nowFilterContact() {
        // TODO Auto-generated method stub

        // determine which contact have more item....

        if (simcontact.size() > phonecontact.size()) {

            onemorefiltermethod(simcontact.size(), simcontact, phonecontact);

        } else {
            onemorefiltermethod(phonecontact.size(), phonecontact, simcontact);
        }

    }

    private void onemorefiltermethod(int size, ArrayList contacts,
            ArrayList contact2) {
        // TODO Auto-generated method stub

        // compare both contact and get repeated contacts....
        for (int i = 0; i < size; i++) {

            try {
                if (contacts.contains(contact2.get(i))) {

                    // add repeated contacts to array....
                    repeatedcontact.add(contact2.get(i));
                }
            } catch (Exception e) {

            }

        }

        System.out.println("repeatedcontact_size??? " + repeatedcontact.size());
        // now delete repeated contact from total contact
        now_deletedrepeated_contact_from_total();
    }

    private void now_deletedrepeated_contact_from_total() {
        // TODO Auto-generated method stub

        for (int i = 0; i < totalcontact.size(); i++) {

            try {
                if (totalcontact.contains(repeatedcontact.get(i))) {
                    totalcontact.remove(repeatedcontact.get(i));

                }
            } catch (Exception e) {

            }

        }
        System.out.println("Final contact size" + totalcontact.size());

        System.out.println("Final contact " + totalcontact);

    }

    private void getsimcard_contact() {
        // TODO Auto-generated method stub
        try {
            Uri simUri = Uri.parse("content://icc/adn");
            Cursor cursorSim = this.getContentResolver().query(simUri, null,
                    null, null, null);

            while (cursorSim.moveToNext()) {
                ClsSimPhonename = cursorSim.getString(cursorSim
                        .getColumnIndex("name"));
                ClsSimphoneNo = cursorSim.getString(cursorSim
                        .getColumnIndex("number"));
                ClsSimphoneNo.replaceAll("\\D", "");
                ClsSimphoneNo.replaceAll("&", "");
                ClsSimPhonename = ClsSimPhonename.replace("|", "");

                /*
                 * add contact from phone to array phone array and total array
                 */

                phonecontact.add(ClsSimphoneNo);
                totalcontact.add(ClsSimphoneNo);

            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    private void getphonecontact() {
        // TODO Auto-generated method stub
        try {
            String[] PROJECTION = new String[] { Contacts._ID,
                    Contacts.DISPLAY_NAME, Phone.NUMBER };

            Cursor c = managedQuery(Phone.CONTENT_URI, PROJECTION, null, null,
                    null);
            if (c.moveToFirst()) {
                String ClsPhonename = null;
                String ClsphoneNo = null;

                do {
                    ClsPhonename = c.getString(c
                            .getColumnIndex(Contacts.DISPLAY_NAME));
                    ClsphoneNo = c.getString(c.getColumnIndex(Phone.NUMBER));
                    /*
                     * add contact from sim to array sim array and total array
                     */
                    simcontact.add(ClsphoneNo);
                    totalcontact.add(ClsphoneNo);

                    ClsphoneNo.replaceAll("\\D", "");
                    ClsPhonename = ClsPhonename.replaceAll("&", "");
                    ClsPhonename.replace("|", "");
                    String ClsPhoneName = ClsPhonename.replace("|", "");

                } while (c.moveToNext());
            }
        } catch (Exception e) {

        }
    }
}

Permission

Your output is on now_deletedrepeated_contact_from_total() method.

Check totalcontact array value for Final output