iPhone NSURL error

Question

I'm using this code to assign the link of my button to the wiki page, while capturing the countryName.text in the UILabel to be a part of the URL, but Xcode gives me an error when I press it. Here's the code:

- (IBAction)openWiki:(id)sender {
NSString *sampleUrl = [[NSString alloc] initWithFormat:@"http://en.wikipedia.org/wiki/%@%@",self.countryName.text];
NSURL *wikiUrl = [[NSURL alloc] initWithString:sampleUrl];
[[UIApplication sharedApplication] openURL:wikiUrl];}

Thanks in advance.

What is the error you are getting on XCODE? – Pablo Santa Cruz May 05 '12 at 13:26 — Pablo Santa Cruz, May 05 '12 at 13:26
Get rid of one of the %@ symbols. – danielbeard May 05 '12 at 13:27 — danielbeard, May 05 '12 at 13:27

score 3 · Accepted Answer · answered May 05 '12 at 13:27

3

In your format you expect two parameters, but give only one:

@"http://en.wikipedia.org/wiki/%@%@",self.countryName.text
//                             ^^

Remove one specifier:

- (IBAction)openWiki:(id)sender {
    NSString *sampleUrl = [[NSString alloc] 
        initWithFormat:@"http://en.wikipedia.org/wiki/%@",self.countryName.text];
    //                                                ^^
    NSURL *wikiUrl = [[NSURL alloc] initWithString:sampleUrl];
    [[UIApplication sharedApplication] openURL:wikiUrl];
}

answered May 05 '12 at 13:27

MByD

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This helped, but when self.countryName.text is something like "San Marino" (two words instead of one) the link wouldn't open :( – Sergey Grischyov May 05 '12 at 13:31
That doesn't matter, it handles a full NSString. You might what to encode it before, but that's something else. – MByD May 05 '12 at 13:32
Take a look at this question: http://stackoverflow.com/questions/8088473/url-encode-a-nsstring – MByD May 05 '12 at 13:35
OK, great! Thanks a lot for the help! – Sergey Grischyov May 05 '12 at 13:37

iPhone NSURL error

1 Answers1