widgetPrimaryVibrancyEffect
For use with highlighted supporting text and glyphs.
widgetSecondaryVibrancyEffect
For use with highlighted supporting text and glyphs where further reduction is required
Here is an illustration with two UIButtons:
Swift 3.0 TodayViewController (Today Extension):
import UIKit import NotificationCenter class TodayViewController: UIViewController, NCWidgetProviding { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view from its nib. self.extensionContext?.widgetLargestAvailableDisplayMode = .expanded setupStackView() } private func setupStackView(){ let stackView = UIStackView(frame: CGRect.zero) stackView.translatesAutoresizingMaskIntoConstraints = false stackView.alignment = .fill stackView.axis = .vertical stackView.distribution = .fillEqually self.view.addSubview(stackView) let hConstraints = NSLayoutConstraint.constraints(withVisualFormat: "H:|[stackView]|", options: NSLayoutFormatOptions(rawValue:0), metrics: nil, views: ["stackView":stackView]) let vConstraints = NSLayoutConstraint.constraints(withVisualFormat: "V:|[stackView]|", options: NSLayoutFormatOptions(rawValue:0), metrics: nil, views: ["stackView":stackView]) self.view.addConstraints(hConstraints) self.view.addConstraints(vConstraints) stackView.addArrangedSubview(self.effectView(withEffect: UIVibrancyEffect.widgetPrimary(), andButtonTitle: "widgetPrimaryVibrancyEffect")) stackView.addArrangedSubview(self.effectView(withEffect: UIVibrancyEffect.widgetSecondary(), andButtonTitle: "widgetSecondaryVibrancyEffect")) } private func effectView(withEffect effect : UIVisualEffect, andButtonTitle title : String)->UIVisualEffectView{ //Create button let button = UIButton(type: .custom) button.translatesAutoresizingMaskIntoConstraints = false button.setTitle(title, for: .normal) //Create UIVisualEffectView let effectView = UIVisualEffectView(effect: effect) effectView.frame = CGRect.zero effectView.translatesAutoresizingMaskIntoConstraints = false effectView.contentView.addSubview(button) //Constraints button.leftAnchor.constraint(equalTo: effectView.contentView.leftAnchor).isActive = true button.topAnchor.constraint(equalTo: effectView.contentView.topAnchor).isActive = true button.rightAnchor.constraint(equalTo: effectView.contentView.rightAnchor).isActive = true button.bottomAnchor.constraint(equalTo: effectView.contentView.bottomAnchor).isActive = true return effectView } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } func widgetPerformUpdate(completionHandler: ((NCUpdateResult) -> Void)) { completionHandler(NCUpdateResult.newData) } }