排序 NSMutableArray？答案

【问题标题】：Sorting NSMutableArray?排序 NSMutableArray？
【发布时间】：2011-12-06 20:14:39
【问题描述】：

我想对 NSMutableArray 进行排序，它的结构是这样的，

Object1:NSMutableDictionary

   Affiliation = 2165;
   CallLetters = abc;
   Channel = "2.1";

   ChannelLocation = "";
   ChannelSchedules =         (
   );
   DisplayName = abc;
   DvbTriplets =         (
   );
   FullName = "bc";
   IconAvailable = 1;
   Order = 1;
   ParentNetworkId = 2;
   ServiceType = Digital;
   SourceAttributeTypes =        
       HD

   SourceId = 11222;
   SourceType = Broadcast;
   TiVoSupported = 1;
   Type = "24-Hours";

Object2:NSMutableDictionary

   Affiliation = 1209;
   CallLetters = "xyz";
   Chann?el = "4.1";

   ChannelLocation = "";
   ChannelSchedules =         (
   );
   DisplayName = "xyz";
   DvbTriplets =         (
   );
   FullName = "xyz";
   IconAvailable = 1;
   Order = 2;
   ParentNetworkId = 5;
   ServiceType = Digital;
   SourceAttributeTypes = HD

   SourceId = 111
   SourceType = Broadcast;
   TiVoSupported = 1;
   Type = "24-Hours";
   VirtualChannelNumber = "4.1";

... .. . . . ./

数组包含许多对象，这些对象包含许多字典。我希望能够使用 NSMutableDictionary 键“Channel”按升序排列上述数组？

如何对数组进行排序？

【问题讨论】：

标签： iphone objective-c

【解决方案1】：

使用 NSSortDescriptor 就可以了

    NSSortDescriptor *aSortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"Channel" ascending:YES];
   [yourarrayobject sortUsingDescriptors:[NSArray arrayWithObject:aSortDescriptor]];
    [aSortDescriptor release];

【讨论】：

【解决方案2】：

要对对象数组进行排序：

设置 NSSortDescriptor - 使用变量名作为键用于排序的设置描述符以及要在其上执行的选择器那些键
使用 NSSortDescriptor 获取描述符数组设置
根据这些描述符对数组进行排序

How to sort NSMutableArray using sortedArrayUsingDescriptors?

【讨论】：