My iphone app crashes the first time i open the project

It crashes only one time and then it works normally.

Here开发者_运维问答 is the project: http://www.mediafire.com/?p0dy7g5ozkl69jt

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You got a memory issue trying to access a released NSURL in your GetXML class... There:

- (void)main {
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    >> NSData *xml = [NSData dataWithContentsOfURL:url];
...

To diagnose these, make use of NSZombiesEnabled, explained there.

To fix your crash, make sure you retain or copy your url in your GetXML class :

- (id)initWithURL:(NSURL*)newURL delegate:(id <GetXMLDelegate>)newDelegate
{
    self = [super init];
    url = [newURL copy]; // there
    delegate = newDelegate;

    return self;
}

and to avoid a memory leak, make sure your release that URL

- (void)dealloc {
  [url release];
  [super dealloc];
}

Untested code, but should work... You should re-read Apple documentation about memory management... ;)