Support for Page on Top & Below

[otymartin]

@msaps
Is there any plan to support pages on top or below?
Im looking to create a 3 page view [Left, Center, Top] where Top is above Left.

Also side question didnt want to raise issue but can bounce be disabled on First and Last page?

[msaps]

Hi,

As Pageboy is just a wrapper around UIPageViewController that sort of layout isn't really possible. The navigationOrientation can be changed to achieve either horizontal/vertical page layout but unfortunately not a hybrid of the two.

You could probably achieve this sort of layout using a horizontal Pageboy and a scroll view / gesture recognizer combination to get the top view controller?

I'll raise a separate issue and get a bounces property added in the next release. 👍

[otymartin]

@msaps Thanks
Just a one more question on the layout i want [Left, Center, Top]
What I technically want do is 3 pages [left, center, top], but User can only swipe between left and center. Going to the top I'd rather use a button to present the top view. Reason being I want a camera view in that top page so that its already loaded. Currently I hate that I have to stare at a black screen for 3-5 seconds before my cameraViewController previewlayer loads.

Can I do that? Present a page without the swipe/transition animation? and prevent swipe to either first page, last page or both?

[msaps]

@otymartin you could achieve that view hierarchy with something like this:

ParentViewController
     -> UIScrollView
          -> TopViewController
          -> PageboyViewController
               -> LeftViewController
               -> CenterViewController

You could then switch between the (Left/Center) pages and the top view controller by having a button which adjusts the scroll view's contentOffset to the required state value. Just have the UIScrollView with scrollEnabled set to false.

[msaps]

@otymartin a bounces property is now available in PageboyViewController as of 0.4.11 😄

[otymartin]

@msaps
Hey thanks for the detailed responses with suggestions. I'll be implementing this library tomorrow and thanks for adding the bounces property. althougth the more I try the example, i'm attracted to the interpolating background color effect your have where it darkens as you try to scroll beyond the bounds of the scroll view.
very nice!

[msaps]

@otymartin no worries! The gradient interpolation code is in found in the following functions:

func updateAppearance(pageOffset: CGFloat) 

func gradient(forIndex index: Int) -> GradientConfig

func interpolate(betweenColor colorA: UIColor,
                 and colorB: UIColor,
                 percent: CGFloat) -> UIColor?

in PageViewControllerAppearance.swift.

[otymartin]

@msaps very nice, I love how they blend in so nicely its just awesome. Makes the infinite scroll more seamless