我如何对 NSMutableArray iphone 进行排序？

Question

我有一个场景，应用程序将信息从 json php 检索到 NSMutableArray。我的问题如下；如何按“时间”字段对元素进行排序？另外，我怎样才能只显示“day”为“monday”的元素？ （if 语句会是什么样子？）。感谢您对此的任何帮助。

NSMutableArray 中的信息也如下所示；

   Array: (
            {
            Code = 2COS402;
            Core = Yes;
            Credit = 15;
            Day = Monday;
            Facilities = Full;
            Level = 4;
            Module = "Introduction to Computer Programming";
            "Room_Empty" = Yes;
            Teacher = "Mark James";
            Time = "10:45";
            id = 1;
        },
            {
            Code = 2GDP401;
            Core = Yes;
            Credit = 15;
            Day = Monday;
            Facilities = Full;
            Level = 4;
            Module = "Fundamentals of Interactive Games";
            "Room_Empty" = No;
            Teacher = "Will Smith";
            Time = "09:00";
            id = 4;
        },
            {
            Code = 2GDP501;
            Core = Yes;
            Credit = 15;
            Day = Monday;
            Facilities = Full;
            Level = 4;
            Module = "Games Play Design";
            "Room_Empty" = Yes;
            Teacher = "Frank Sinatra";
            Time = "15:00";
            id = 6;
        }
    )

Answer 1

您可以查看NSMutableArray 的sortUsingComparator: 或sortUsingSelector: 方法。当然，您需要定义您的自定义 NSComparator 或实现自定义方法来执行此操作。