Question

I’m creating a new UIViewController with 2 properties :

@property (retain, nonatomic) NSURL *url;
@property (retain, nonatomic) NSString *title;

and synthetised :

@synthesize url = _url;
@synthesize title = _title;

in my custom init method i’m not using the setter like the Memory Management Guide says but when I need to use the properties in the viewDidLoad, the url seems empty, the title doesn’t

- (id)initWithURL:(NSURL *)url andTitle:(NSString *)titleTemp
{
    self = [super initWithNibName:@"navigatorViewController" bundle:nil];
    if (self) {
        _url = url;
        _title = titleTemp;
    }
    return self;
}

- (void)viewDidLoad
{
     [super viewDidLoad];
     // Do any additional setup after loading the view from its nib.
     [_titreBarButtonItem setTitle:_title];

     NSURLRequest *urlRequest = [[NSURLRequest alloc] initWithURL:_url];
    [_webView loadRequest:urlRequest];
    [urlRequest release];
}

I can see my title but my web view is blank.
If I use self.url in the init, it’s working !

Do you have an idea ?

PS : Here’s how I call my init :

NSString *urlString = [[[NSBundle mainBundle] pathForResource:@"infos" ofType:@"html"] copy];
NSURL *url = [[NSURL alloc] initFileURLWithPath:urlString];
[urlString release];
navigatorViewController *navigatorVC = [[navigatorViewController alloc] initWithURL:url andTitle:@"Infos"];
[url release];
[self presentViewController:navigatorVC animated:YES completion:nil];
[navigatorVC release];

Thanks a lot

Answer 1

You must retain the URL either using :

self.url = url;

in the init method or call the retain after assigning the url in the init method like this.

_url = url;
[_url retain];