iPhone remove substring from string

Question

Hi I have a string like that

NSString *str=@"1,2,3,4"; 

I have to remove any character from it dynamically. For example, @"3,".

Answer 1

NSString *str=@"1,2,3,4"; [str stringByReplacingOccurrencesOfString:@"3," withString:@""]; 

That will remove ALL occurrences of @"3," in str.

If you want to remove only the first occurrence of @"3,":

NSString* str = @"1,2,3,4"; NSRange replaceRange = [str rangeOfString:@"3,"]; if (replaceRange.location != NSNotFound){     NSString* result = [str stringByReplacingCharactersInRange:replaceRange withString:@""]; } 

Hope this helps.

Answer 2

  NSString *str=@"1,2,3,4";   int numberToRemove = 4;   str = [str stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%d",numberToRemove] withString:@""];  str = [str stringByReplacingOccurrencesOfString:@",," withString:@","]; 

This will help.