NSURL equal to server URL

Question

I'm getting url from my server. I used this code

self.bookURL = [aDictionary objectForKey:@"bookurl"];

The url is http://www.test.com/url. If this URL matches, I need to display a UIButton. How can I match this URL with self.bookURL? I used below NSLog, nothing displays in the log.

NSLog(@"book url is %@",bookURL);
NSString *thumburl=@"http://www.test.com/ur";
if(bookURL==thumburl){

}

And you can't compare the value of two objects using `==`. You need to use the `isEqual:` method. — rmaddy, Mar 06 '14 at 04:07
if bookURL is not displayed in log,try to log `aDictionary` and see whether you are getting this url from server — Rijo Joseph, Mar 06 '14 at 04:10
also for string comparing, check out this answer: http://stackoverflow.com/a/6591743/797901 — devdavid, Mar 06 '14 at 05:10

Ben Avery · Answer 1 · 2014-03-06T04:14:15.797

1

You can compare URLs using You can convert thumburl into an NSURL using

NSURL thumburl = [NSURL URLWithString:@"http://www.test.com/ur"];

and then compare the two NSURLs using

if([self.bookURL isEqual: thumburl]){
    //They match
}

If they are both strings use

if([self.bookURL isEqualToString:thumbURL]){
    //They match
}

If nothing is displaying in the log the dictionary is probably returning an empty string, check this by logging (or better yet put a break point on the line after your dictionary gets populated)

edited Mar 06 '14 at 04:14

answered Mar 06 '14 at 04:08

Ben Avery

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Its also worth mentioning that in general when comparing objects for equality you should not use `==`. `==` is a very shallow equality check. In fact in this case merely checks if both objects occupy the same memory address, nothing more. – cream-corn Mar 06 '14 at 04:16

score 0 · Answer 2 · edited May 23 '17 at 12:03

0

If you want a simple string compare convert with

[someURL absoluteString]

For more complicated cases that arise with URLs check the method provided here... https://stackoverflow.com/a/12332091/1381053

edited May 23 '17 at 12:03

Community

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answered Mar 06 '14 at 04:10

landon beach

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score 0 · Accepted Answer · answered Mar 06 '14 at 04:15

You cannot compare strings (or objects for that matter) with ==.

You can either convert the NSString to an NSURL and compare like this:

NSURL *thumburl = [NSURL URLFromString:@"http://www.test.com/ur"];

if ([self.bookURL isEqual:thumburl]){
     //do something
}

This assumes that the value bookurl stored in the NSDictionary is an object of type NSURL. If you want to do a string comparison between two NSStrings (instead of working with NSURL), then you can do the following:

if ([self.bookURL isEqualToString:thumburl]){
     //do something
}

This second example assumes that the self.bookURL object that you are getting back is NSString instead of NSURL.

NSURL equal to server URL

3 Answers3