Android Cursor.getcount(); returns 0 rows if no results, returns 0 if 1 results, returns 1 if 2 results.

Question

I simply want to run a check to see if a specified object is in the sqlite3 database, and if it is, delete it, and if it isn't, add it. I have not found a way to get consistent results. I add, then I expect to delete, but it adds a second row and I can only seem recognize when there are 2 duplicate rows, and then delete.