Question

I am developing a phonebook app. I am trying to retrieve contact picture. At first I retrieved all the contacts and then took each contact_id and did a query on the photo table to get the picture. However, it is taking forever to query all the contacts for pics. As in my emulator there are more than 1000 contacts, so, more than 1000 hits on the photo table is being fired. So, is there a way to join the two tables and get the data in a single query?

Below is my code to do it. But I know its wrong. Just gave it a shot. Please someone correct it.

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    String[] projection = new String[]{Contacts._ID, Contacts.DISPLAY_NAME};
    String joinCondition = "ContactsContract.Contacts._ID=ContactsContract.CommonDataKinds.Photo.CONTACT_ID";
    ContentResolver cr = context.getContentResolver();
    Uri contactUri = ContactsContract.Contacts.CONTENT_URI;
    Uri fillUri = Uri.withAppendedPath(contactUri, Contacts.Photo.CONTENT_DIRECTORY);
    Cursor cur = cr.query(contactUri, projection,
            joinCondition, null, Contacts.DISPLAY_NAME);

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Thx!
Rahul.

Answer 1

you can try the following:

    public final String[] columns = {ContactsContract.Contacts._ID, 
                ContactsContract.Contacts.DISPLAY_NAME,     
                                    ContactsContract.Contacts.PHOTO_THUMBNAIL_URI};

   Cursor c = contentResolver.query(Contacts.CONTENT_URI, columns, where, args, ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");

this should return you a cursor with all contacts and their pictures