getting values from column in database

getting values from column in database

I am getting values from the column "threadid" in the database.Problem is
that it gets the value from the previous record/row. and when I try to get
the first record my app crashes,, How to tackle this problem and whats the
issue?
long id;
long threadid = datasource.getthreadid(id);
Toast.makeText(getActivity(), String.valueOf(threadid),
Toast.LENGTH_SHORT).show();
public long getthreadid(long id)
{
String ide=String.valueOf(id);
String queryz = "SELECT " + MySQLiteHelper.COLUMN_THREADID
+ " FROM " + MySQLiteHelper.TABLE_NAME
+ " WHERE " + MySQLiteHelper.COLUMN_ID + "=" + ide;
Cursor cursor = database.rawQuery(queryz, null);
cursor.moveToFirst();
// cursor.moveToPosition(Integer.parseInt(String.valueOf(id)));
long threadid= cursor.getLong(cursor.getColumnIndex("threadid"));
cursor.close();
return threadid;
}