ios - Popover 保持模态呈现

Question

我正在尝试在点击图像时添加一个弹出窗口，但它一直以模态方式呈现。这个问题/主题的每个答案都建议添加 adaptivePresentationStyleForPresentationController 但它对我不起作用。我正在尝试在 iPhone 上执行此操作。这是我的代码:

class ParkingInfoTableViewController: UITableViewController, UIPopoverPresentationControllerDelegate {
    ...
    func presentPopover(sender:UITapGestureRecognizer) {
    let storyboard : UIStoryboard = UIStoryboard(name: "Main",bundle: nil)
    let infoViewController = storyboard.instantiateViewControllerWithIdentifier("ImagesInfoPopupViewController")
    infoViewController.modalPresentationStyle = .Popover
    infoViewController.preferredContentSize = CGSizeMake(150, 75)

    let popoverPresentationViewController = infoViewController.popoverPresentationController
    popoverPresentationViewController?.permittedArrowDirections = .Any
    popoverPresentationController?.delegate = self
    popoverPresentationViewController?.sourceView = sender.view
    popoverPresentationViewController?.sourceRect = CGRect(
        x: sender.locationInView(sender.view).x,
        y: sender.locationInView(sender.view).y,
        width: 1,
        height: 1)

    self.presentViewController(infoViewController, animated: true, completion: nil)

}

func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    return .None
}

带有图像的单元格是:

        let cell = tableView.dequeueReusableCellWithIdentifier(AppConstants.moreInfoCellReusableIdentifier) as! MoreInfoTableViewCell

        let tapped = UITapGestureRecognizer(target: self, action: #selector(presentPopover))
        tapped.numberOfTapsRequired = 1
        cell.securityImage.addGestureRecognizer(tapped)
        cell.securityImage.userInteractionEnabled = true

        return cell

Answer 1

以下是针对 Swift 3 (Xcode 8) 的解决方案

我在从 Swift 2.2 (Xcode 7) 迁移到 Swift 3 (Xcode 8) 时遇到了这个问题。

对于 UIPopoverPresentationControllerDelegate，我在下面实现了这两个:

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

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

在准备 segue 时，我在 prepare(for segue...) 中做了以下操作:

let popover = segue.destination
popover.popoverPresentationController?.delegate = self
popover.modalPresentationStyle = .popover

假设您有一个用于弹出框 Controller 的类，在 viewDidLoad() 中您可以复制以下内容:

super.viewDidLoad()
...
self.preferredContentSize = CGSize(width: 123, height: 456)

最后，我在 Storyboard中定义的 segue 配置如下:

• 类型:呈现为 Popover
• anchor :一个按钮栏项目(会因您的实现而异)
• 方向:默认全部选中