popoverpresentviewcontroller with rectangle corner and without arrow

问题

I want a popover without rounded corners and with no arrow.

I have done the following code but it did not work:

//SerachPopViewController.swift

    //MARK: InitCoder
required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    //popover settings
    //popoverPresentationController!.permittedArrowDirections = .Any
    modalPresentationStyle = .Popover
    popoverPresentationController!.delegate = self
    //permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)
    self.preferredContentSize = CGSize(width:340,height:380)
}

//QueryTableViewController.swift

    @IBAction func searchFilter(sender: AnyObject) {

    let searchPopController = storyboard!.instantiateViewControllerWithIdentifier("SerachPopViewController") as! SerachPopViewController
    searchPopController.serachPopDelegate = self
    searchPopController.modalPresentationStyle = .Popover
    searchPopController.preferredContentSize = CGSize(width:340,height:380)

    let popoverPresentationController = searchPopController.popoverPresentationController

    popoverPresentationController!.sourceView = self.view;
    popoverPresentationController!.sourceRect = CGRectMake(CGRectGetMidX(self.view.bounds), CGRectGetMidY(self.view.bounds),0,0)
    popoverPresentationController!.permittedArrowDirections = UIPopoverArrowDirection();
    self.presentViewController(searchPopController, animated: true, completion: nil)
}

I am able to display popover view with arrow and rounded arrow.

Please help me to achieve:

• popup view with rectangle corner
• popup view without direction arrows

回答1:

I was not 100% happy with shawnynicole's answer because I realized the change from the rounded to the rectangular corners are notable/visible.

So I came up with this: subclass the view controller (in my case it was an UINavigationController) and override viewDidLayoutSubviews and update corners there. This is better because corners change animation is not visible and it will be updated every time needed (on rotations, etc).

It works in iOS11 and probably should work on others versions too.

class PopoverNavigationController: UINavigationController {

    @IBInspectable var cornerRadius: Int = -1

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        let r = CGFloat(cornerRadius)
        if r >= 0 && view.superview?.layer.cornerRadius != r {
            view.superview?.layer.cornerRadius = r
        }
    }
}

回答2:

Using the concept above, you can also set the corner radius in the completion parameter.

Swift 3

let popoverViewController: UIViewController = // Some view controller to be presented in a popover

// Set popover properties here...
// i.e. popoverViewController.modalPresentationStyle = .popover

present(popoverViewController, animated: true, completion: {
     popoverViewController.view.superview?.layer.cornerRadius = 0

    // Additional code here
})

回答3:

In iOS 11 its not possible to use @SHN solution for removing rounded corners. The corner radius is set to default value after viewWillAppear.

Radius must be set in viewDidAppear method

override func viewDidAppear(_ animated: Bool) {
    view.superview?.layer.cornerRadius = 0
    super.viewDidAppear(animated)
}

回答4:

To get popover without arrow when you are initiating popover, use:

popover!.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)

For popover without corner radius, in the popover content view controller use:

override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)
        // Do any additional setup after loading the view, typically from a nib.
        self.view.superview?.layer.cornerRadius = 0.0;
    }

回答5:

I don't know why It does't work on my Simulator with iOS11.1 until trying setting backgroundColor.I added function viewWillTransition for rotating device.

override func viewDidAppear(_ animated: Bool) {
    view.superview?.backgroundColor = UIColor.white
    view.superview?.layer.cornerRadius = 0
    super.viewDidAppear(animated)
}

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    view.superview?.backgroundColor = UIColor.white
    view.superview?.layer.cornerRadius = 0
    super.viewWillTransition(to: size, with: coordinator)
}

回答6:

For Swift 4, in case you present your popover embedded in a navigation controller:

override func viewDidAppear(_ animated: Bool) {
        navigationController?.view.superview?.layer.cornerRadius = 0
        super.viewDidAppear(animated)
}

来源：https://stackoverflow.com/questions/38592147/popoverpresentviewcontroller-with-rectangle-corner-and-without-arrow