PresentViewController with custom transition
I would like to present a modal UIViewController with various transitions to those available by the toolkit. Precisely I would like an upside-down animation compared to the slide from the bottom (UIModalTransitionStyleCoverVertical), present = slide from the top, firing = slide from the top.
I don't think there is an easy option to invert the UIModalTransitionStyleCoverVertical, so I think I need to do it myself.
I also don't use segue / storyboard, not sure if that matters.
I've found some solutions that suggest just animating a new view of the viewcontroller and using the presentViewController with the animated option as NO. Unfortunately, the problem is that the background goes black right away, even if I define a new viewcontroller with a clear background and not opaque.
Any idea how I could sort this out? Many thanks!
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Apply your own animation with CATransition.
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Set the property
modalPresentationStyle
for the presented view controller to UIModalPresentationCustom (available for iOS 7 or later). See also UIModalPresentationOverCurrentContext iOS8 or UIModalPresentationCurrentContext.
In my case, I wanted to have the same animation style, but I needed to use the UIModalPresentationOverCurrentContext for iOS 8.
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