Objective-C: Substring and replace

Question

I have a NSString which is a URL. This URL need to be cut:

NSString *myURL = @"http://www.test.com/folder/testfolder";
NSString *test = [myURL stringByReplacingCharactersInRange:[myURL rangeOfString:@"/" options:NSBackwardsSearch] withString:@""];

I have this URL http://www.test.com/folder/testfolder and I want that the test variable should have the value http://www.test.com/folder/, so the testfolder should be cut. So I tried to find the NSRange testfolder to replace it with an empty string.

But it does not work. What I am doing wrong?

score 3 · Answer 1 · answered Nov 21 '11 at 15:35

3

Try this:

NSString *myURL = @"http://www.test.com/folder/testfolder";
NSString *test = [myURL stringByDeletingLastPathComponent];
NSLog(@"%@", test);

you should get > http://www.test.com/folder/

answered Nov 21 '11 at 15:35

nacho4d

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score 3 · Accepted Answer · answered Nov 21 '11 at 15:36

3

You can turn it into a URL and use -[NSURL URLByDeletingLastPathComponent]:

NSString *myURLString = @"http://www.test.com/folder/testfolder";
NSURL *myURL = [NSURL URLWithString:myURLString];
myURL = [myURL URLByDeletingLastPathComponent];
myURLString = [myURL absoluteString];

answered Nov 21 '11 at 15:36

mipadi

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With this version, the ending slash is still there, instead of the solution to do it with `stringByDeletingLastPathComponent`. – Tim Nov 22 '11 at 10:26

jptsetung · Answer 3 · 2011-11-21T16:02:39.840

You can't use the NSRange returned by [myURL rangeOfString:@"/" options:NSBackwardsSearch] because its length is "1". So to keep with your idea to use NSRange (other replies using stringByDeletingLastPathComponent seems to be very valid too), here is how you could do it :

NSRange *range=[myURL rangeOfString:@"/" options:NSBackwardsSearch];
NSString *test = [myURL stringByReplacingCharactersInRange:NSMakeRange(range.location,test.length-range.location) withString:@""];

Objective-C: Substring and replace

3 Answers3

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