如何按字母顺序对字典对象排序NSArray？

问题描述：

我有无序的字典数组，我想根据艺术家names.Unsorted列表进行排序它给出如下：如何按字母顺序对字典对象排序NSArray？

  { 
       artist = "Afro Latin Jazz Orchestra"; 
       id = 10; 
      }, 
        { 
       artist = "Avey, Bobby"; 
       id = 17; 
      }, 
        { 
       artist = "American Symphony Orchestra"; 
       id = 32; 
      }, 
        { 
       artist = "Akpan, Uwem"; 
       id = 97; 
      }, 
        { 
       artist = "Austin, Ivy "; 
       id = 123; 
      }, 
        { 
       artist = "American Theatre Orchestra"; 
       id = 153; 
      }, 
        { 
       artist = AudraRox; 
       id = 171; 
      }, 
        { 
       artist = "Atlas, James"; 
       id = 224; 
      }, 
        { 
       artist = "Alden, Howard"; 
       id = 270; 
      }, 
        { 
       artist = Astrograss; 
       id = 307; 
      }, 
        { 
       artist = "Adan, Victor"; 
       id = 315; 
      }, 
        { 
       artist = "Alegria, Gabriel"; 
       id = 316; 
      }, 
        { 
       artist = "Andersen, Kurt"; 
       id = 412; 
      }, 
        { 
       artist = Antares; 
       id = 420; 
      }, 
        { 
       artist = "Austen, Jane "; 
       id = 426; 
      }, 
        { 
       artist = "Acuna, Claudia"; 
       id = 443; 
      }, 
        { 
       artist = "Akinmusire, Ambrose"; 
       id = 444; 
      }, 
        { 
       artist = "Anderson, Laurie Halse"; 
       id = 559; 
      }, 
        { 
       artist = "Alvarez, Javier"; 
       id = 591; 
      }, 
        { 
       artist = "Alexander, Jane"; 
       id = 674; 
      }, 
        { 
       artist = "Andy Teirstein"; 
       id = 695; 
      }, 
        { 
       artist = "Afro-Cuban Jazz Saxtet"; 
       id = 707; 
      }, 
        { 
       artist = "Aurora "; 
       id = 708; 
      }, 
        { 
       artist = "Aurora "; 
       id = 709; 
      }, 
        { 
       artist = "August, Gregg "; 
       id = 715; 
      }, 
        { 
       artist = "Aldous, Brian"; 
       id = 777; 
      }, 
        { 
       artist = "Anne Enright"; 
       id = 1130; 
      }

而且使用后描述

排序

NSSortDescriptor *sortByName = [NSSortDescriptor sortDescriptorWithKey:@"artist" ascending:YES]; 
NSArray *sortDescriptors = [NSArray arrayWithObject:sortByName]; 
sortedArray = [artistArray sortedArrayUsingDescriptors:sortDescriptors];

它给数组排序为

 { 
      artist = "Acuna, Claudia"; 
      id = 443; 
     }, 
      { 
      artist = "Adan, Victor"; 
      id = 315; 
     }, 
      { 
      artist = "Afro Latin Jazz Orchestra"; 
      id = 10; 
     }, 
      { 
      artist = "Afro-Cuban Jazz Saxtet"; 
      id = 707; 
     }, 
      { 
      artist = "Akinmusire, Ambrose"; 
      id = 444; 
     }, 
      { 
      artist = "Akpan, Uwem"; 
      id = 97; 
     }, 
      { 
      artist = "Alden, Howard"; 
      id = 270; 
     }, 
      { 
      artist = "Aldous, Brian"; 
      id = 777; 
     }, 
      { 
      artist = "Alegria, Gabriel"; 
      id = 316; 
     }, 
      { 
      artist = "Alexander, Jane"; 
      id = 674; 
     }, 
      { 
      artist = "Alvarez, Javier"; 
      id = 591; 
     }, 
      { 
      artist = "American Symphony Orchestra"; 
      id = 32; 
     }, 
      { 
      artist = "American Theatre Orchestra"; 
      id = 153; 
     }, 
      { 
      artist = "Andersen, Kurt"; 
      id = 412; 
     }, 
      { 
      artist = "Anderson, Laurie Halse"; 
      id = 559; 
     }, 
      { 
      artist = "Andy Teirstein"; 
      id = 695; 
     }, 
      { 
      artist = "Anne Enright"; 
      id = 1130; 
     }, 
      { 
      artist = Antares; 
      id = 420; 
     }, 
      { 
      artist = Astrograss; 
      id = 307; 
     }, 
      { 
      artist = "Atlas, James"; 
      id = 224; 
     }, 
      { 
      artist = AudraRox; 
      id = 171; 
     }, 
      { 
      artist = "August, Gregg "; 
      id = 715; 
     }, 
      { 
      artist = "Aurora "; 
      id = 708; 
     }, 
      { 
      artist = "Aurora "; 
      id = 709; 
     }, 
      { 
      artist = "Austen, Jane "; 
      id = 426; 
     }, 
      { 
      artist = "Austin, Ivy "; 
      id = 123; 
     }, 
      { 
      artist = "Avey, Bobby"; 
      id = 17; 
     }

但仍是不完全排序。任何想法如何使用艺术家名字按字母顺序排序。请帮助我！

排序有什么问题？你显示的结果是为了？你期望他们在什么顺序？ – 2012-04-10 06:21:09

可能的重复[如何排序包含NSDictionaries的NSArray？]（http://stackoverflow.com/questions/3361207/how-can-i-sort-an-nsarray-containing-nsdictionaries） – 2012-04-10 06:22:00

是您的具体问题这种排序是区分大小写的？如果是这样，你需要'[NSSortDescriptor sortDescriptorWithKey：@“artist”ascending：YES selector：@selector（caseInsensitiveCompare :)]'。 – Dondragmer 2012-04-10 06:22:00

答

使用对于这样

for(int i =0;i<[Arr count];i++) 
{ 
    [dict setValue:[Arr objectAtIndex:i] forKey:[[Arr objectAtIndex:i] valueForKey:artist]]; 
}

每一个字典值环设置键现在你会得到这样的

Acuna, Claudia = { 
    artist = "Acuna, Claudia"; 
    id = 443; 
}  
Adan, Victor = { 
    artist = "Adan, Victor"; 
    id = 315; 
}  
Afro Latin Jazz Orchestra = { 
    artist = "Afro Latin Jazz Orchestra"; 
    id = 10; 
}  
Afro-Cuban Jazz Saxtet { 
    artist = "Afro-Cuban Jazz Saxtet"; 
    id = 707; 
}  
Akinmusire, Ambrose = { 
    artist = "Akinmusire, Ambrose"; 
    id = 444; 
}  

NSArray *KeyArr = [dict allKeys]; 

[KeyArr sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];

在阵列现在你会得到整理键，使用此阵你可以通过使用排序的键在字母排序的dictionart

for(int i= 0;i<[dict count];i++) 
{ 
    NSLog("Test val:%@",[dict valueForKay:[keyArr objectAtIndex:i]]); 
}

最后，你会得到你正在寻找什么现在..享受这个编码..
如果您有任何疑问随时问..

这实际上不起作用，因为'KeyArr'的排序版本被丢弃。你可以使用'KeyArr = [KeyArr sortedArrayUsingSelector：@selector（caseInsensitiveCompare :)];'来存储它。但是，如果这是OP所需的，那么使用“artist”键和“caseInsensitiveCompare：”选择器排序现有数组的效率会更低。 – Dondragmer 2012-04-10 06:48:19

如何按字母顺序对字典对象排序NSArray？

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