android.database.CursorIndexOutOfBoundsException: Index 5 requested, with a size of 5

描述：
01-02 00:13:43.380: E/flyLog:ChatManager(963): getUnreadChatGroupandroid.database.CursorIndexOutOfBoundsException: Index 5 requested, with a size of 5 01-02 00:13:43.380: E/flyLog:ChatManager