Transparent view background turns black

Question

I want to make the view of a view controller semi-transparent. For that I have set the background color like this in the viewDidLoad method.

view.backgroundColor = UIColor(white: 0, alpha: 0.5)

When the view controller is presented, the background appears as I need it and then it turns black right away.

Why is this happening?

This is the code for showing the PopupViewController:

@IBAction func didTapShowButton(_ sender: UIButton) {
    let navController = UINavigationController(rootViewController: PopupViewController())
    present(navController, animated: true, completion: nil)
}

I uploaded a demo project here as well.

This may be a great opportunity to create a custom presentation which may give you a number of design ideas that you had not thought of before. — trndjc, Dec 31 '17 at 18:36

mugx · Accepted Answer · 2018-01-14T05:51:00.533

11

You may add the flag overCurrentContext (or custom), so your present might be something like:

@IBAction func didTapShowButton(_ sender: UIButton) {
    let navController = UINavigationController(rootViewController: PopupViewController())
    navController.modalPresentationStyle = .overCurrentContext
    present(navController, animated: true, completion: nil)
}

edited Jan 14 '18 at 05:51

answered Dec 31 '17 at 16:52

mugx

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Worked for me as well. Swift 4 – Naveed Ahmad Sep 26 '18 at 21:15
1

thanks, works like a charm! I used this instead of isModalInPresentation = true for IOS 13, cause my background was turning black – Pedro Antonio Jun 19 '20 at 15:00

Transparent view background turns black

1 Answers1