Passing parameters using url scheme

Question

I am working on a app which could be launched over a URL. I have already defined my url scheme using xcode on info page. I filled for identifier my Bundle identifier and for URL Schemes myapp.

Now if I try to open in safari myapp://foo, it launches my app and stops at my breakpoint in

- (BOOL)application:(UIApplication *)application
        openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
     annotation:(id)annotation

method.

Problem is annotation, url, application, sourceapplication parameters are nil. So I can not pass parameters...

enter image description here

Are you saying that this method's url variable is nil, or that the parameterString of url (since it's an NSURL) is nil? How are you determining that it's nil? — Billy Lazzaro
Are you sure that you are passing a valid encoded link? I've often used this delegate method but I've never experienced that behavior! — Alexander
@Alexander Like I told in my question, I am trying to open the address myapp://foo, and it launches my app, but I do not get the string foo. I have also tried myapp://?foo=1234, no luck... — Mert

Mert Mert · Accepted Answer · 2013-02-19T09:49:46

After unnecessary time loss, I have found out, the problem was the debugger. It shows the url is nil and if I try to print description it says

Printing description of url:
<nil>

But If I try to NSLog it shows the url. And if put the following code in the method

if (! url) {
    return NO;
}

The debugger shows also the url.

Passing parameters using url scheme

2 Answers