CODEWITHSUNDEEP
iosuipageviewcontroller
user1507795
user1507795

Reputation: 1

iOS UIPageViewController Spine Location

I`m implementing an UIPageViewController and all works fine even if i rotate the device after the initialization it sets the SpineLocation correctly, BUT

When i Instantiate the UIPageViewController, IF the device is on landscape orientation it creates the UIPageViewController with just one page (UIPageViewControllerSpineLocationMin)...

Im trying to instantiate it using UIPageViewControllerSpineLocationMid just like the code below (and like developer.apple recommends) BUT when i do it... the UIPageViewController doesnt load...

NSDictionary * options = [NSDictionary dictionaryWithObject:
        [NSNumber numberWithInt:UIPageViewControllerSpineLocationMid]
forKey:UIPageViewControllerOptionSpineLocationKey];

UIPageViewController *pageViewController = [[UIPageViewController alloc]
initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl
  navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal
                options:options]

Is there something wrong? Thanks!

Upvotes: 0

Views: 4490

Answers (1)

iPhone Programmatically
iPhone Programmatically

Reputation: 1227

Use this delegate.

- (UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController  *)pageViewController
               spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation
{
if(UIInterfaceOrientationIsPortrait(orientation))
{
 //Set the array with only 1 view controller
    UIViewController *currentViewController = [self.pageController.viewControllers objectAtIndex:0];
    NSArray *viewControllers = [NSArray arrayWithObject:currentViewController];
    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];

    //Important- Set the doubleSided property to NO.
    self.pageController.doubleSided = NO;
    //Return the spine location
    return UIPageViewControllerSpineLocationMin;

 }

else
{
NSArray *viewControllers = nil;

    exampleViewController *currentViewController = [self.pageController.viewControllers objectAtIndex:0];

    NSUInteger currentIndex = [self.VControllers indexOfObject:currentViewController];

    if(currentIndex == 0 || currentIndex %2 == 0)
    {
        UIViewController *nextViewController = [self pageViewController:self.pageController viewControllerAfterViewController:currentViewController];
        viewControllers = [NSArray arrayWithObjects:currentViewController, nextViewController, nil];
    }
    else
    {
        UIViewController *previousViewController = [self pageViewController:self.pageController viewControllerBeforeViewController:currentViewController];
        viewControllers = [NSArray arrayWithObjects:previousViewController, currentViewController, nil];
    }
    //Now, set the viewControllers property of UIPageViewController
    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];

    return UIPageViewControllerSpineLocationMid;
}
}

Upvotes: 2

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