Question

I am using the Android Eclair 2.1 platform.

The working behind this code is, it will access all the contacts from the Emulator and will display in the list view for each contact like this

Contact Name, Contact Number, Email

There are 2 issues for this code is

1. I did run the program, after that I created a new contact it won’t be in alphabetical order

[ eg : when I create a name starting from B it wouldn’t go after A, instead it go to the last place ]

2.If a contact has no Email or Number it will receive the previous contact’s Email or Number

Here is the code

public class GetAllDatas extends Activity { 

ListView lvItem;
private Button btnAdd;
String displayName="", emailAddress="", phoneNumber="";
ArrayList<String> contactlist=new ArrayList<String>(); 
ArrayAdapter<String> itemAdapter;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

lvItem = (ListView)this.findViewById(R.id.lvitems); 
btnAdd = (Button)this.findViewById(R.id.btnAddItem);

itemAdapter = new ArrayAdapter<String>    (this,android.R.layout.simple_list_item_1,contactlist);
lvItem.setAdapter(itemAdapter);

btnAdd.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
    readContacts();
}
});

 } 

private void readContacts()
{
ContentResolver cr =getContentResolver();
Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null,    null);
while (cursor.moveToNext()) 
{
displayName =Cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)    );       
String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
Cursor emails = cr.query(Email.CONTENT_URI,null,Email.CONTACT_ID + " = " + id, null,     null);
while (emails.moveToNext()) 
{ 
    emailAddress = emails.getString(emails.getColumnIndex(Email.DATA));
    break;
}
emails.close();
    if(Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PH    ONE_NUMBER))) > 0)
{
    Cursor pCur =cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDat     aKinds.Phone.CONTACT_ID +" = ?",new String[]{id}, null);
    while (pCur.moveToNext()) 
    {
         phoneNumber =pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        break;  
    }
    pCur.close();
}

//  To display the Details
    contactlist.add(displayName+", "+phoneNumber+", "+ emailAddress+"\n");
    itemAdapter.notifyDataSetChanged();
 }
cursor.close(); 
 }
 }

Any link or site to refer and study to solve this problems if so send me the link ?

Answer 1

Check the tested code below

package stack.examples;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

public class GetAllDatas extends Activity {

    ListView lvItem;
    private Button btnAdd;
    String displayName="", emailAddress="", phoneNumber="";
    ArrayList<String> contactlist=new ArrayList<String>();
    ArrayAdapter<String> itemAdapter;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       lvItem = (ListView)this.findViewById(R.id.listView_items);  
       btnAdd = (Button)this.findViewById(R.id.btnAddItem);
       itemAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,contactlist);
       lvItem.setAdapter(itemAdapter);
       btnAdd.setOnClickListener(new View.OnClickListener() {
           public void onClick(View v) {
               readContacts();
           }
       });
    }

    private void readContacts()
    {
        ContentResolver cr =getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        while (cursor.moveToNext()) 
        {
            displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));       
            String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
            Cursor emails = cr.query(Email.CONTENT_URI,null,Email.CONTACT_ID + " = " + id, null, null);
            while (emails.moveToNext()) 
            { 
                emailAddress = emails.getString(emails.getColumnIndex(Email.DATA));
                break;
            }
            emails.close();
            if(Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
            {
                Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",new String[]{id}, null);
                while (pCur.moveToNext()) 
                {
                     phoneNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    break;
                }
                pCur.close();
            }
                contactlist.add(displayName+","+phoneNumber+","+ emailAddress);

        }
        cursor.close(); 
        sortList(contactlist);
        itemAdapter.notifyDataSetChanged();
    }

    private static void sortList(List<String> aItems){
        Collections.sort(aItems, String.CASE_INSENSITIVE_ORDER);
      }
}

To sort the ArrayList in Alphabetical order, you can use

Collections.sort(aItems, String.CASE_INSENSITIVE_ORDER);

Happy Coding !!!