StackOverflow2013

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copied!<p>I make this code skeleton for dealing with wanted & unwanted devices orientations, in my case i want to ignore the UIDeviceOrientationUnknown, UIDeviceOrientationFaceUp and UIDeviceOrientationFaceDown, caching the last allowed orientation. This code deals with iPhone and iPad devices and can be useful for you.</p> <pre><code>- (void)modXibFromRotation { UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]; NSString *device = [[UIDevice currentDevice]localizedModel]; UIInterfaceOrientation cachedOrientation = [self interfaceOrientation]; if ([device isEqualToString:@"iPad"]) { if (orientation == UIDeviceOrientationUnknown || orientation == UIDeviceOrientationFaceUp || orientation == UIDeviceOrientationFaceDown) { orientation = (UIDeviceOrientation)cachedOrientation; } if (orientation == UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) { /* Your code */ } if (orientation == UIDeviceOrientationPortrait || orientation == UIDeviceOrientationPortraitUpsideDown) { /* Your code */ } } if ([device isEqualToString:@"iPhone"] || [device isEqualToString:@"iPod"]) { if (orientation == UIDeviceOrientationUnknown || orientation == UIDeviceOrientationFaceUp || orientation == UIDeviceOrientationFaceDown) { orientation = (UIDeviceOrientation)cachedOrientation; } if (orientation == UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) { /* Your code */ } if (orientation == UIDeviceOrientationPortrait || orientation == UIDeviceOrientationPortraitUpsideDown) { /* Your code */ } } } </code></pre> <p>Yo have to call this method from two places in your view controller:</p> <p>Fist begin generating device Orientation Notifications in your App delegate:</p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. //**** ADD THIS CODE ***** [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; // Add the main view controller's view to the window and display. self.window.rootViewController = self.mainViewController; [self.window makeKeyAndVisible]; return YES; </code></pre> <p>}</p> <p>then listen for device Orientation Notifications in your view controller:</p> <pre><code>- (void)viewDidLoad { [notificationCent addObserver:self selector:@selector(modXibFromRotation) name:UIDeviceOrientationDidChangeNotification object:nil]; } </code></pre> <p>Finally call the modXibFromRotation method from:</p> <pre><code>- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear]; [self modXibFromRotation]; } </code></pre> <p>This will call the check orientation method before the view is shown.</p>

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