I have a NSString like this: "Firstname Lastname". How do I convert it to "Firstname L."?

Question

I would like to change it to first name and last initial.

Thanks!

Answer 1

NSString* nameStr = @"Firstname Lastname";
NSArray* firstLastStrings = [nameStr componentsSeparatedByString:@" "];
NSString* firstName = [firstLastStrings objectAtIndex:0];
NSString* lastName = [firstLastStrings objectAtIndex:1];
char lastInitialChar = [lastName characterAtIndex:0];
NSString* newNameStr = [NSString stringWithFormat:@"%@ %c.", firstName, lastInitialChar];

This could be much more concise, but I wanted clarity for the OP :) Hence all the interim variables and var names.

Answer 2

This would do it:

NSArray *components = [fullname componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *firstnameAndLastnameInitial = [NSString stringWithFormat:@"%@ %@.", [components objectAtIndex:0], [[components objectAtIndex:1] substringToIndex:1]];

This assumes that fullname is an instance of NSString and contains two components separated by whitespace, so you will need to check for that as well.

Answer 3

You can use this code snippet, first separate string using componentsSeparatedByString, then join them again but only get the first character of Lastname

NSString *str = @"Firstname Lastname";
NSArray *arr = [str componentsSeparatedByString:@" "];
NSString *newString = [NSString stringWithFormat:@"%@ %@.", [arr objectAtIndex:0], [[arr objectAtIndex:1] substringToIndex:1]];