Optimize contentProvider query for retrieve contact names and phones

Question

Currently, I'm using this code in order to get the contact name and the phone number:

    ContentResolver contentResolver = getContentResolver();

    Cursor people = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);

    int nameIndex = people.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
    int idIndex = people.getColumnIndex(ContactsContract.Contacts._ID);
    int hasPhoneNumberIndex = people.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER);

    String name, id;
    int hasPhoneNumber;

    while(people.moveToNext()){
        name = people.getString(nameIndex);
        id = people.getString(idIndex);
        hasPhoneNumber = people.getInt(hasPhoneNumberIndex);

        if(hasPhoneNumber > 0){
            Cursor phones = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+id, null, null);
            phones.moveToFirst();

            int phoneIndex = phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
            String phone = phones.getString(phoneIndex);

            HashMap<String, String> namePhoneType = new HashMap<String, String>();
            namePhoneType.put("Name", name);
            namePhoneType.put("Phone", phone);

            m_peopleList.add(namePhoneType);

            phones.close();
        }
    }

But this is extremely slow.

Is there a way to retrieve name and phone in only one query?

Answer 1

I've founded a way:

Cursor people = getContentResolver()
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, null, null,  Phone.DISPLAY_NAME + " ASC");