| public GetPreviousViewController ( UIPageViewController pageViewController, UIViewController referenceViewController ) : UIViewController | ||
| pageViewController | UIPageViewController | |
| referenceViewController | UIViewController | |
| return | UIViewController | |
public UIPageViewControllerSpineLocation GetSpineLocation(UIPageViewController pageViewController, UIInterfaceOrientation orientation)
{
if (orientation == UIInterfaceOrientation.Portrait || UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone)
{
UIViewController currentViewController = pageViewController.ViewControllers [0];
pageViewController.SetViewControllers(
new [] { currentViewController },
UIPageViewControllerNavigationDirection.Forward,
true, null
);
pageViewController.DoubleSided = false;
return(UIPageViewControllerSpineLocation.Min);
}
var dataViewController = (DataViewController)pageViewController.ViewControllers [0];
var indexOfCurrentViewController = modelController.IndexOfViewController(dataViewController);
UIViewController[] viewControllers = null;
if (indexOfCurrentViewController == 0 || indexOfCurrentViewController % 2 == 0)
{
UIViewController nextViewController = modelController.GetNextViewController(pageViewController, dataViewController);
viewControllers = new [] { dataViewController, nextViewController };
}
else
{
UIViewController previousViewController = modelController.GetPreviousViewController(pageViewController, dataViewController);
viewControllers = new[] { dataViewController, previousViewController };
}
pageViewController.SetViewControllers(viewControllers, UIPageViewControllerNavigationDirection.Forward, true, null);
return(UIPageViewControllerSpineLocation.Mid);
}
public UIPageViewControllerSpineLocation GetSpineLocation(UIPageViewController pageViewController, UIInterfaceOrientation orientation)
{
var result = UIPageViewControllerSpineLocation.None;
if (orientation == UIInterfaceOrientation.Portrait || UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone)
{
// In portrait orientation or on iPhone: Set the spine position to "min" and the page view controller's view controllers array to contain just one view controller.
// Setting the spine position to 'UIPageViewControllerSpineLocationMid' in landscape orientation sets the doubleSided property to YES, so set it to NO here.
var currentViewController = pageViewController.ViewControllers[0];
pageViewController.SetViewControllers(new[] { currentViewController },
UIPageViewControllerNavigationDirection.Forward,
true,
null);
pageViewController.DoubleSided = false;
result = UIPageViewControllerSpineLocation.Min;
}
else
{
// In landscape orientation: Set set the spine location to "mid" and the page view controller's view controllers array to contain two view controllers.
// If the current page is even, set it to contain the current and next view controllers; if it is odd, set the array to contain the previous and current view controllers.
var dataViewController = pageViewController.ViewControllers[0] as DataViewController;
var indexOfCurrentViewController = modelController.IndexOfViewController(dataViewController);
UIViewController[] viewControllers = null;
if (indexOfCurrentViewController == 0 || indexOfCurrentViewController % 2 == 0)
{
var nextViewController = modelController.GetNextViewController(pageViewController, dataViewController);
viewControllers = new[] { dataViewController, nextViewController };
}
else
{
var previousViewController = modelController.GetPreviousViewController(pageViewController, dataViewController);
viewControllers = new[] { dataViewController, previousViewController };
}
pageViewController.SetViewControllers(viewControllers, UIPageViewControllerNavigationDirection.Forward, true, null);
result = UIPageViewControllerSpineLocation.Mid;
}
return(result);
}
