Pop up UIViewController on Click of UIButton in Swift 4 (POP UP Controller)

POP up UIViewController on Click of UIButton.

Some time we need to popup a controller on click of UIButton event not to cover all screen just cover some part of screen so we can show some message or perform some action on controller .

For this we need to follow some steps:

1: Take a Two UIViewController like that:

2: Here is “POP” is UIbutton , connect firstView Controller to another by Model Popover .

a: Select Button

b: go To “Connection Inspector”

c: In Triggered Section – select the action and connect to 2nd controller as “present as PopOver”

3: Now Its time to write the code in 1st viewcontroller.

a: Add the “UIPopoverPresentationControllerDelegate” in 1st UIViewcontroller class.

b: write their delegate method in 1st class.

 func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
        return .none
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        
        // All popover segues should be popovers even on iPhone.
        if let popoverController = segue.destination.popoverPresentationController, let button = sender as? UIButton {
            popoverController.delegate = self
            popoverController.sourceRect = button.bounds
        }
        
        guard let identifier = segue.identifier, let segueIdentifer = SegueIdentifier(rawValue: identifier) else { return }
        if segueIdentifer == .showObjects, let objectsViewController = segue.destination as? POpUpViewController {
            
        }
    }

func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {

return .none

}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

// All popover segues should be popovers even on iPhone.

if let popoverController = segue.destination.popoverPresentationController, let button = sender as? UIButton {

popoverController.delegate = self

popoverController.sourceRect = button.bounds

}

guard let identifier = segue.identifier, let segueIdentifer = SegueIdentifier(rawValue: identifier) else { return }

if segueIdentifer == .showObjects, let objectsViewController = segue.destination as? POpUpViewController {

}

It will look like as :

Here I have taken in 2nd Viewcontroller UItableview so you can can take any thing depends on your requirement.

You can also set the size of UITableView like that:

 override func viewWillLayoutSubviews() {
          preferredContentSize = CGSize(width: 300, height: tableView.contentSize.height)
    }

override func viewWillLayoutSubviews() {

preferredContentSize = CGSize(width: 300, height: tableView.contentSize.height)

}

Here

I have taken custom width & Height if TableView .

kunal prasad 26 October 2021

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Pop up UIViewController on Click of UIButton in Swift 4 (POP UP Controller)

POP up UIViewController on Click of UIButton.

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