objective-c - 如何使用 nsdictionary 拆分字符串和交换值

Question

我是 ios 的新手，正在尝试做这样的事情

self.dataArray = [dictionary valueForKey:@"LIST"];

{
  "List": [
    {
      "FULLNAME": "FirstName, LastName",
      "ID": "281"
    }
  ]
}

我想交换“FULLNAME”中的值，即我希望它是 LastName，FirstName

我尝试了各种方法，但都不行。谁能告诉我如何实现这一点？

谢谢

Answer 1

假设您知道如何进行字典操作，下面是交换字符串中元素的一种方法:

NSString* name = @"Firstname, Lastname";
// Remove the space after comma (not necessary if you know the name will always
// have a space after comma, then just split on ', '.
NSString* normalizedName = [name stringByReplacingOccurrencesOfString:@", " withString:@","];
// Split the string on ','.
NSArray* nameParts = [normalizedName componentsSeparatedByString:@","];
// Reverse the array
NSArray* reverseNameParts = [[nameParts reverseObjectEnumerator] allObjects];
// Join the array with ', '
NSString* revname = [reverseNameParts componentsJoinedByString:@", "];
NSLog(@"Reversed name parts: %@", revname);