App crashes up when opening url in safari

Question

I'm trying to open url in safari with this code:

- (IBAction)webButton:(id)sender {

    NSString *url = @"www.google.com";

    url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    [[UIApplication sharedApplication]openURL:[NSURL URLWithString:url]];


}

But every time app crashes up.

Has someone been in similar situation?

Here is ss off crash: http://dl.dropbox.com/u/77033905/urlInSafariCrashesUp.png

UPDATE:

NSString *recipients = @"mailto:first@example.com?subject=Hello from Croatia!";
    NSString *body = @"&body=It is sunny in Croatia!";

    NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body];
    email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];

This is for opening mail but same over sharedApplication. It crashes up to.

UPDATE 2: Console log: argv char ** 0xbffff520 *argv char * 0xbffff658 **argv char '/' argc int 1

UPDATE 3: It calls IBAction but crashes up. When I try this code in root view it works. I addedd and connected in IB button and everything is ok with that.

Is there problem with calling UIApplication sharedApplication in subview? Should I call on different way?

UPDATE 4:

I figure it out that problem is even when i call empty IBAction in subview, so problem obviously is not in UIApplication but in calling IBAction in subview.

- (IBAction)webButton:(id)sender {

  // empty

}

UPDATE 5: Solution: How to call IBAction in subview?

are you sure your IBAction is wired up correctly? Can you place a break point in the webButton method to make sure you are getting into that method? — Joe, May 08 '12 at 21:15
yes, i'm getting in method. Pls take a lok at UPDATED first post. — iWizard, May 08 '12 at 21:15
this I found in one post (stack): "It may be possible that you need to retain the URL object. That was once the issue for me". Link: http://stackoverflow.com/questions/5775077/uiapplications-openurl-crashes-my-app — iWizard, May 08 '12 at 21:19
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/11032/discussion-between-croios-and-joe) — iWizard, May 08 '12 at 21:30
Solution: http://stackoverflow.com/questions/10515259/how-to-call-ibaction-in-subview/10516023#10516023 — iWizard, May 09 '12 at 12:55

Sveinung Kval Bakken · Answer 1 · 2012-05-09T07:39:38.983

3

You are not providing a valid URL, an URL is always of the form scheme:<host part>.

// This is correct and will work:
[[UIApplication sharedApplication] openUrl:[NSURL URLWithString:@"http://www.google.com"]]

// Updated with body and subject:
NSMutableString* url = [NSMutableString stringWithString:@"mailto:"];
[url appendString:@"first@example.com"];
[url appendFormat:@"?subject=%@", [@"Hello from Croatia" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[url appendFormat:@"&body=%@", [@"This is a body" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

edited May 09 '12 at 07:39

answered May 08 '12 at 20:55

Sveinung Kval Bakken

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I think you have something else going wrong, I use this same code all the time and theres nothing wrong with it. – Mick MacCallum May 08 '12 at 21:03
It crashes up again with you code to. I'm calling above code in my subview, maybe is this the problem. Because when I try to call this code in root view it work's. – iWizard May 09 '12 at 08:00
@CroiOS You need to make it more clear what you are trying to accomplish, and exactly what is going wrong. Your updates keep changing your question. – Mick MacCallum May 09 '12 at 11:10
Yes, my updates changing question because i tought that problem was in UIApplication but it's not. And on that i open new question because it's not same like this. http://stackoverflow.com/questions/10515259/how-to-call-ibaction-in-subview – iWizard May 09 '12 at 11:34

Joe · Answer 2 · 2012-05-08T20:58:40.257

1

Does it crash if you do something like

NSString *url = @"http://www.google.com";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

I believe you need the "http://" in there.

edited May 08 '12 at 20:58

answered May 08 '12 at 20:53

Joe

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This is not strange at all, if you percent escape `http://www.google.com` you will get: `http%3A%2F%2Fwww.google.com` which is not a valid URL (see my answer below). – Sveinung Kval Bakken May 08 '12 at 20:57
The solution is @SveinungKvalBakken's method. – Mick MacCallum May 08 '12 at 21:08
but it's not working to me, I made update on first post. pls take a look – iWizard May 08 '12 at 21:13
Did you read my post? You're escaping away the special characters used to separate the scheme, host and parameters, see how you should escape only the contents of the URL parameters, not the URL itself. – Sveinung Kval Bakken May 09 '12 at 07:38
which part of my url should I escape? – iWizard May 09 '12 at 07:57

App crashes up when opening url in safari

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