Question

My application was not made ​​for the landscape. But when I open my YouTube channel in a UIWebView and a user launches a video, it appears in Portrait. I would like to make it appear in landscape mode if the user rotate his iPhone.

How to enable landscape mode as in this case?

I know there are “dirty hacks” to do this but I prefer something cleaner. Also I do not want the UIWebView switches to landscape but just that the videos can.

Answer 1

I finally adjusted my view so that it supports landscape mode using the following code :

- (void)viewDidLoad {
    [super viewDidLoad];

    [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientationChanged:)
                                                 name:UIDeviceOrientationDidChangeNotification object:nil];
}

- (void)viewWillAppear:(BOOL)animated {
    UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
    if (UIDeviceOrientationIsLandscape(deviceOrientation))
    {
        //I set my new frame origin and size here for this orientation
        isShowingLandscapeView = YES;
    }
    else if (deviceOrientation == UIDeviceOrientationPortrait)
    {
        //I set my new frame origin and size here for this orientation
        isShowingLandscapeView = NO;
    }
}

- (void)orientationChanged:(NSNotification *)notification
{
    // We must add a delay here, otherwise we'll swap in the new view
    // too quickly and we'll get an animation glitch
    [self performSelector:@selector(updateLandscapeView) withObject:nil afterDelay:0];
}

- (void)updateLandscapeView
{
    UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
    if (UIDeviceOrientationIsLandscape(deviceOrientation) && !isShowingLandscapeView)
    {
        //I set my new frame origin and size here for this orientation
        isShowingLandscapeView = YES;
    }
    else if (deviceOrientation == UIDeviceOrientationPortrait && isShowingLandscapeView)
    {
        //I set my new frame origin and size here for this orientation
        isShowingLandscapeView = NO;
    }    
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait || UIInterfaceOrientationIsLandscape(interfaceOrientation));
}