How to check if there was conflict in SQLite db Android upon inserting?

How to check if there was conflict in SQLite Data Base in Android upon inserting? I am using unique keys on 3 rows (id, isbn, google_id) and I simply always add and ignore conflict. What are the ways to get conflicts upon inserting in entry already exists. Should I query before or I can get like "some kind of trace back" so that I will be able to notify user that entry already exists?

 SQLiteDatabase db = this.getWritableDatabase();      
 ContentValues values = new ContentValues();
 values.put(KEY_TITLE, book.getTitle());
 values.put ...

long id = db.insertWithOnConflict(TABLE_BOOKS,
          null,
          values,
          SQLiteDatabase.CONFLICT_IGNORE);


 db.close();
 return (int) id;