排序字符串，忽略号显示在UITableView的

Question

我需要在表视图字母排序数据，而忽略数字，如：

- 123 test 
- 939 urne 
- 403 vase 

目前，数据加载这样的：

- 939 urne 
- 123 test 
- 403 vase 

什么是忽略数字的最佳选择？

Answer 1

您可以在词典中，像单独存储数据，

Array 
(
    { 
     "number" = 403 
     "text" = "vase" 
    }, 
    { 
     "number" = 403 
     "text" = "vase" 
    } 
) 

那么你可以进行排序使用，

NSSortDescriptor * descriptor = [NSSortDescriptor sortDescriptorWithKey:@"text" ascending:YES]; 
[array sortUsingDescriptors:[NSArray arrayWithObject:descriptor]]; 

Answer 2

的最佳途径此

NSSortDescriptor *descriptor; = [NSSortDescriptor sortDescriptorWithKey:@"text" ascending:YES comparator:^(NSString *obj1, NSString *obj2) { 

      return [obj1 compare:obj2 :NSCaseInsensitiveSearch]; 

     }]; 

    [arrDocuments sortUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]]; 

Answer 3

现在开始一个循环其中包含您希望排序的数组中的所有对象。假设数组的名称是originalArray。

NSMutableArray *newArray = [[NSMutableArray alloc] init]; 
NSMutableArray *finalArray = [[NSMutableArray alloc] init]; 

for(int i = 0; i < originalArray.count; i++) 
{ 
    NSString *tempstr = [originalArray objectAtIndex:i]; // suppose it is 123 - abcd 

    NSString *newString = [[tempstr componentsSeparatedByCharactersInSet: [[NSCharacterSet letterCharacterSet] invertedSet]] componentsJoinedByString:@""]; 

    NSDictionary *dict = [[NSDictionary alloc] init]; 
    [dict setValue:@(i) forKey:@"num"]; 
    [dict setValue:newString forKey:@"char"]; 

    [newArray addObject:dict]; 

} 

现在您可以排序newArray： -

NSSortDescriptor * descriptor = [NSSortDescriptor sortDescriptorWithKey:@"char" ascending:YES]; 
[newArray sortUsingDescriptors:[NSArray arrayWithObject:descriptor]]; 

现在你可以（在关键NUM）

for(int j = 0; j<newArray.count ; j++) 
{ 
    NSDictionary *dict1 = [[NSDictionary alloc] init]; 
    dict1 = [newArray objectAtIndex: j]; 
    int number = [[dict1 objectForKey:@"num"] intValue]; 
    NSString *str = [originalArray objectAtIndex:number]; 

//Now add this string in the finalArray. 

    [finalArray addObject:str]; 
} 

我希望从现在这个阵列中的字典索引你能够理解这一点。 :)