Using CursorLoader to get emails causes duplication of emails

Question

I am trying to get email ids of uses contacts. For that I am using Cursor Loader. There is one problem I am getting duplicate email ids also. How to remove email duplicacy. Shou

Answer 1

Inspired by @mars, I have a solution that does not need a modification of the adapter. The idea is to delete the duplicates of the cursor; as there is no way to do it, we create a new cursor whithout the duplicates.

All the code is in onLoadFinished:

@Override
    public void onLoadFinished(Loader loader, Cursor cursor) {

        MatrixCursor newCursor = new MatrixCursor(PROJECTION); // Same projection used in loader 
        if (cursor.moveToFirst()) {
            String lastName = "";
            do {
                if (cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)).compareToIgnoreCase(lastName) != 0) {

                    newCursor.addRow(new Object[]{cursor.getString(0), cursor.getString(1), cursor.getString(2) ...}); // match the original cursor fields
                    lastName =cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                }
            } while (cursor.moveToNext());
        }
        mContactsAdapter.swapCursor(newCursor);
    }