The short answer is that you’re using UINavigationController, and that won’t work like you want it to. From Apple’s docs: Why won’t my UIViewController rotate with the device? All child view controllers in your UITabBarController or UINavigationController do not agree on a common orientation set. To make sure that all your child view controllers rotate … Read more
Xcode 4 Refactor > Convert to Objective-C ARC transforms: @interface XYZ : NSObject { id delegate; } @property (assign) id delegate; … @synthesize delegate; into: @interface XYZ : NSObject { id __unsafe_unretained delegate; } @property (unsafe_unretained) id delegate; … @synthesize delegate; If I remember correctly it is also mentioned in WWDC 2011 video about ARC.
A variation on this should fix both the leaking and zombie issues: – (void)loadRequest:(NSURLRequest *)request { [self retain]; if ([webView isLoading]) [webView stopLoading]; [webView loadRequest:request]; [self release]; } – (void)webViewDidStartLoad:(UIWebView *)webView { [self retain]; } – (void)webViewDidFinishLoad:(UIWebView *)webView { [self release]; } – (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error { [self release]; } – (void)viewWillDisappear { if … Read more
Alexander Repty just blogged about this very topic: http://blog.proculo.de/archives/180-Paging-enabled-UIScrollView-With-Previews.html. Short answer: it’s not as simple as just changing the width of the ‘page’, but it’s not too hard.
You should be able to set the button’s ‘Type’ to Custom in Interface Builder, and it will not display any text or graphical elements over the UIImageView. This way, you don’t need to adjust the alpha. If the view is built from code, use: button = [UIButton buttonWithType:UIButtonTypeCustom];