NSPopover for iOS | 易学教程

问题

Is there something similar to NSPopover for iOS apps? It appears in the Object library for Mac but not for iPhone nor iPad, although I have downloaded apps using this (or at least some very similar) feature.

So my question: Is there a legit way to implement this?

回答1:

UIPopoverController is what you're looking for.

回答2:

There is UIPopOverController, but its use is restricted to iPads:

Popover controllers are for use exclusively on iPad devices. Attempting to create one on other devices results in an exception.

(source)

For iPhone/iPod touch, you could use an external framework, like WEPopOver.

回答3:

There is they are called UIPopovers,

Heres a tutorial: http://www.youtube.com/watch?v=1iykxemuxbk

回答4:

For the sake of those Googling this, UIPopoverController is now available for both iPhone and iPad. You can make popovers that look the same on both (as of iOS 9, I believe).

Step 1: Include UIAdaptivePresentationControllerDelegate and UIPopoverPresentationControllerDelegate on your class definition

Step 2: Override the presentation somewhere in your class like this:

func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
  return .none
}

Step 3: When you present a view controller, you tell it to use popover style. Something like this:

//I pull my popover from a separate storyboard, but any modal view will do
let storyboard = UIStoryboard(name: "Popovers", bundle: nil)
let modal = storyboard.instantiateViewController(withIdentifier: "AnyPickerModal") as! AnyPickerVC
modal.modalPresentationStyle = UIModalPresentationStyle.popover

let pc = modal.popoverPresentationController
pc?.permittedArrowDirections = .any
pc?.sourceView = <your button or view you tap to show the popover>
pc?.sourceRect = <your button or view>.bounds

//How big the popover should be
modal.preferredContentSize = CGSize(width: 300, height: 180)

pc?.delegate = self

self.present(modal, animated: true, completion: nil)

Your presented modal will show up as a popover on both iPhone and iPad. Attached is a screenshot from my iPhone app.

Happy coding!

来源：https://stackoverflow.com/questions/6989486/nspopover-for-ios

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ios

cocoa-touch