How to change the values in the string between the letters

Question

I have string something like @"goodhouse=30&app=60&val=30askldkla" How can I found the value 30 between house= and &, and change it on 50?

i have tried `[str replaceOccurrencesOfString:@"30" withString:@"60" options:NSCaseInsensitiveSearch range:NSMakeRange(0, str.length)];` but it doesn't good if there are the same value — user2398911, May 27 '13 at 12:58

score 4 · Answer 1 · answered May 27 '13 at 12:53

4

You can find a range between house= and & string using NSRange. And if range exists, then change the string which you want.

answered May 27 '13 at 12:53

iDeveloper

it's bad because if the range thange i need all time to count it. – user2398911 May 27 '13 at 12:59

score 1 · Accepted Answer · answered Apr 10 '14 at 10:05

1

if ([yourString rangeOfString:@"30"].location==NSNotFound) {
yourString = [yourString stringByReplaceOccurenceOfString:@"30" withString@"60"];

}

answered Apr 10 '14 at 10:05

iDeveloper

Balu · Answer 3 · 2013-05-27T13:00:06.583

0

try like this,

string=@"30";
str=[str stringByReplaceOccurenceOfString:string withString@"50"];

EDIT:- try like this,

NSString *test = [dateandtime stringByReplacingCharactersInRange:NSMakeRange(10,2) withString:@"50"];

edited May 27 '13 at 13:00

answered May 27 '13 at 12:54

Balu

i try it but the problem if there are two string with 30. it make 50 for all of them but i need only for one – user2398911 May 27 '13 at 12:59
i wrote about it upper that using nsrange is bad because if string will be dynamic i all times need to count the range – user2398911 May 27 '13 at 13:06
If there is another answer that i can try. – user2398911 May 27 '13 at 13:08
if other than 30 is placed in between those then wt you want to do at that time? – Balu May 27 '13 at 13:11
30 will be static. so i need to found the value between house= and &app and change it. – user2398911 May 27 '13 at 13:21

3 Answers3