What should I add to the hyperlink?
<p>If I got a URL which was youtube.com/watch?v=Hj57OP5C-ls .. what should I add in in the code?</p>

<pre><code>- (IBAction)btnYoutube:(id)sender {

    NSURL *linkToAppURL = [NSURL URLWithString:[NSString stringWithFormat:@"youtube://user/%@",@"toyotaleasing"]];
    NSURL *linkToWebURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://www.youtube.com/user/%@",@"toyotaleasing"]];

    if ([[UIApplication sharedApplication] canOpenURL:linkToAppURL]) {
        // Can open the youtube app URL so launch the youTube app with this URL
        [[UIApplication sharedApplication] openURL:linkToAppURL];
    }
    else{
        // Can't open the youtube app URL so launch Safari instead
        [[UIApplication sharedApplication] openURL:linkToWebURL];
    }
}
</code></pre>