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POHow to intercept iPhone rotation
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  1. POHow to intercept iPhone rotation
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    copied!<p>in my app I got a Home with several buttons. Each button opens a separate view. In each view, if I put the device in landscape a help view is shown. Everything works fine except that in whatever view I am, if I put the iPhone like to lay on a table (I don't know how to eplain better...) the app exites from that view and comes back to the first view, the Home. Here's my code: </p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientationChanged:)name:@"UIDeviceOrientationDidChangeNotification" object:nil]; [self performSelector:@selector (ritardo) withObject:nil afterDelay:5.0f]; } -(void)orientationChanged:(NSNotification *)object{ UIDeviceOrientation deviceOrientation = [[object object] orientation]; if (deviceOrientation == UIInterfaceOrientationPortrait) { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.5f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; self.view = self.portraitView; } else if (deviceOrientation == UIInterfaceOrientationLandscapeLeft || deviceOrientation == UIInterfaceOrientationLandscapeRight) { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.5f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; self.view = self.landscapeView; } [UIView commitAnimations]; [self dismissModalViewControllerAnimated:NO]; } -(void) ritardo { ruota.image = [UIImage imageNamed:@"RuotaPerAiuto.png"]; } - (void)viewDidUnload { [self setPortraitView:nil]; [self setLandscapeView:nil]; [self setRuota:nil]; [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } else { return YES; } } @end </code></pre> <p>Hi hope you can help me</p> <p>EDIT: I modified the -(void)orientationChanged:(NSNotification *)object{ in this way:</p> <pre><code>-(void)orientationChanged:(NSNotification *)object{ UIDeviceOrientation deviceOrientation = [[object object] orientation]; if (deviceOrientation == UIDeviceOrientationFaceUp)// || deviceOrientation == UIDeviceOrientationFaceDown) { return; } if (deviceOrientation == UIInterfaceOrientationPortrait || deviceOrientation == UIInterfaceOrientationPortraitUpsideDown) { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.5f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; self.view = self.portraitView; } else if (deviceOrientation == UIInterfaceOrientationLandscapeLeft || deviceOrientation == UIInterfaceOrientationLandscapeRight) { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.5f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; self.view = self.landscapeView; } [UIView commitAnimations]; [self dismissModalViewControllerAnimated:NO]; } </code></pre> <p>Now, if I'm in portrait and get the iPhone to faceUp position works good. But when I change position from faceUp to portrait it goes back to the home...</p>
 

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