iOS finding string within a string

Question

Hello everyone I am trying find a string inside a string lets say I have a string:

word1/word2/word3

I want to find the word from the end of the string to the last "/" so what I will get from that string is:

Word3

How do I do that? Thanks!

Do these strings represent file paths? – NSGod Apr 30 '13 at 07:19 — NSGod, Apr 30 '13 at 07:19

txulu · Accepted Answer · 2013-04-30T07:49:32.617

5

You are looking for the componentsSeparatedByString: method

NSString *originalString = @"word1/word2/word3";
NSArray *separatedArray = [originalString componentsSeparatedByString:@"/"];
NSString *lastObject = [separatedArray lastObject]; //word3

edited Apr 30 '13 at 07:49

answered Apr 30 '13 at 07:19

txulu

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score 3 · Answer 2 · answered Apr 30 '13 at 07:19

3

once check this one By using this one you'l get last pathcomponent values,

NSString* theFileName = @"how /are / you ";
    NSString *str1=[theFileName lastPathComponent];
    NSLog(@"%@",str1);

By using lastPathComponent you'l get the last path component directly no need to take array for separate the string.

answered Apr 30 '13 at 07:19

Balu

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@user1014334:no need to take array use NSString class methods. – Balu Apr 30 '13 at 07:26

Girish · Answer 3 · 2013-04-30T07:20:39.783

2

NSString *string = @"word1/word2/word3"
NSArray *arr = [string componentsSeperatedByString:@"/"];
NSSting *str = [arr lastObject];

edited Apr 30 '13 at 07:20

answered Apr 30 '13 at 07:12

Girish

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What I meant is that the "Words" can be anything. and not only "word 1 word 2 word 3" sorry for not explaining well... – Matan Apr 30 '13 at 07:15

score 2 · Answer 4 · edited May 23 '17 at 11:49

2

you must use NSScanner class to split substring.

check this.

Objective C: How to extract part of a String (e.g. start with '#')

edited May 23 '17 at 11:49

Community

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answered Apr 30 '13 at 07:15

Suraj Gupta

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score 2 · Answer 5 · answered Apr 30 '13 at 07:23

You can find it also with this way:

NSMutableString *string=[NSMutableString stringWithString:@"word1/word2/word3"];
NSRange range=[string rangeOfString:@"/" options:NSBackwardsSearch];
NSString *subString=[string substringFromIndex:range.location+1];

score 1 · Answer 6 · answered Apr 30 '13 at 07:15

1

NSRegularExpression or NSString rangeOfString:options:range:locale: (with options to search backwards).

The answer really depends on exactly what the input string will contain (how consistent it is).

answered Apr 30 '13 at 07:15

Wain

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iOS finding string within a string

6 Answers6