iOS NSArray排序

Question

我有一个嵌套数组，并希望通过内部数组内的键进行排序。下面给出的 是我想用NSSortDescriptor或其他方式排序的数组。

fares(
{ 
    pid = 1; 
    type1 = (
    { 
     color = "red"; 
     size = "big"; 
     properties = (
     { 
      mod = "auto"; 
      payment = "EMI"; 
      moresegs = (
      { 
       id = 141; 
       name = "abcd"; 
       duration = "1 year" 
      }) 
     }) 
    }); 
    type2 = (
    { 
     color = "green"; 
     size = "small"; 
     properties = (
     { 
      mod = "auto"; 
      payment = "EMI"; 
      moresegs = (
      { 
       id = 141; 
       name = "abcd"; 
       duration = "1 year" 
      }) 
     }) 
    }) 
} 

{ 
    pid = 1; 
    type1 = (
    { 
     color = "red"; 
     size = "big"; 
     properties = (
     { 
      mod = "auto"; 
      payment = "EMI"; 
      moresegs = (
      { 
       id = 141; 
       name = "abcd"; 
       duration = "1 year" 
      }) 
     }) 
    }); 
    type2 = (
    { 
     color = "green"; 
     size = "big"; 
     properties = (
     { 
      mod = "auto"; 
      payment = "EMI"; 
      moresegs = (
      { 
       id = 141; 
       name = "abcd"; 
       duration = "1 year" 
      }) 
     }) 
    }) 
}) 

我怎么能利用关键“type2->属性 - >支付”排序上面阵列？

-------更新-----------

我修改了阵列和使用NSSortDescriptor这解决了我的问题

Answer 1

试试这个：

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"type1.size" ascending:YES]; 
NSArray *finalArray = [self.firstArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]]; 

Answer 2

通过输入查询票价阵列到这个方法 -

+(NSArray*)sortedListBySize:(NSArray*)_unsortedList{ 
    NSArray *sortedListBySize = [_unsortedList sortedArrayUsingComparator:(NSComparator)^(id obj1, id obj2){ 

     if ([[obj1 valueForKeyPath:@"type2.properties.payments" ] intValue] < [[obj1 valueForKeyPath:@"type2.properties.payments"] intValue]) { 
      return NSOrderedAscending; 
     } else if ([[obj1 valueForKeyPath:@"type2.properties.payments" ] intValue] > [[obj1 valueForKeyPath:@"type2.properties.payments"] intValue]) { 
      return NSOrderedDescending; 
     } 
     return NSOrderedSame; 
    }]; 
    return sortedListBySize; 
}