使用url方案传递参数

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...

Answer 1

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.

Answer 2

Are you sure your project is in debug mode!? See here http://nerdwa.com/index.php/2011/09/debugrelease-schemes-in-xcode-4/