Hello,

I'm encountering an issue where if I have a pulsator started on a viewcontroller, then I present another viewcontroller and dismiss it, the pulse animation no longer shows. I forked the demo project to demonstrate the problem here.

Just click the button to present the viewcontroller, then dismiss it and you can see that the pulse stops. Any suggestions on how to fix this?

Carthage fails for some reason with the following error:

*** Building scheme "Pulsator" in Pulsator.xcodeproj Failed to write to /Users/geddoff/Git/tmarkovski/indyapp/Carthage/Build/Mac/Pulsator.framework: Error Domain=NSCocoaErrorDomain Code=260 "The file “Pulsator.framework” couldn’t be opened because there is no such file." UserInfo={NSURL=file:///Users/geddoff/Library/Caches/org.carthage.CarthageKit/DerivedData/9.3_9E145/Pulsator/0.5.1/Build/Intermediates.noindex/ArchiveIntermediates/Pulsator/BuildProductsPath/Release-iphoneos/Pulsator.framework, NSFilePath=/Users/geddoff/Library/Caches/org.carthage.CarthageKit/DerivedData/9.3_9E145/Pulsator/0.5.1/Build/Intermediates.noindex/ArchiveIntermediates/Pulsator/BuildProductsPath/Release-iphoneos/Pulsator.framework, NSUnderlyingError=0x7fd8bec97b50 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}

I simply added the entry to the Cartfile. Any ideas?

Also setting pulsator.position makes it disappear completely?

       pulsator.position = self.view.center
        pulsator.numPulse = 5
        pulsator.radius = 70
        pulsator.repeatCount = .greatestFiniteMagnitude
        pulsator.animationDuration = 3
        pulsator.backgroundColor = UIColor(red: 0, green: 0.755, blue: 0.756, alpha: 1).cgColor
        button.layer.insertSublayer(pulsator, below: button.layer)
        pulsator.start()

my code: ` let pulsator = Pulsator() override func viewDidLoad() { super.viewDidLoad() shoppieImage.layer.superlayer!.insertSublayer(pulsator, below: shoppieImage.layer) pulsator.numPulse = 1 pulsator.animationDuration = 1 pulsator.repeatCount = 0 pulsator.pulseInterval = 0.25 pulsator.backgroundColor = ShopXStyle.yellowColor.cgColor pulsator.radius = 200 pulsator.name = "pulsator" pulsator.start() }

override func viewDidLayoutSubviews() { super.viewDidLayoutSubviews() view.layer.layoutIfNeeded() pulsator.position = shoppieImage.center }`

• Swift 4.2 migration on source and example project
• Removed .swift-version file in favour of using s.swift_version in pod spec
• Incremented s.version patch number for next cocoa pod release

Pulsator is not visible until I close the app and reopen it (causing viewDidLayoutSubviews to trigger). No matter if I call centerPulsator(), force layouting subviews upon load etc. What could be the problem?

import Foundation
import Pulsator

class TestView: UIViewController {

    var icon: UIImage?
    var message: String?
    var buttonTitle: String?

    lazy var iconView: UIImageView = { [unowned self] in
        let view = UIImageView()

        view.backgroundColor = UIColor.clearColor()
        view.image = self.icon

        return view
    }()

    lazy var pulsator: Pulsator = { [unowned self] in
        let pulsator = Pulsator()

        pulsator.numPulse = 3
        pulsator.radius = 100
        pulsator.backgroundColor = UIColor.redColor()

        pulsator.position = self.iconView.layer.position

        return pulsator
    }()

    lazy var messageLabel: UILabel = { [unowned self] in
        let label = UILabel()

        label.textColor = UIColor.darkGrayColor()
        label.font = UIFont.systemFontOfSize(17)
        label.adjustsFontSizeToFitWidth = true
        label.numberOfLines = 0
        label.minimumScaleFactor = 0.5
        label.textAlignment = .Center

        label.text = self.message

        return label
    }()

    lazy var settings: UIButton = { [unowned self] in
        let button = UIButton()

        button.backgroundColor = UIColor.redColor()
        button.setTitleColor(UIColor.whiteColor(), forState: .Normal)
        button.setTitle(self.buttonTitle, forState: .Normal)

        button.addTarget(self, action: #selector(openSystemSettings), forControlEvents: .TouchUpInside)

        return button
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        view.backgroundColor = UIColor.whiteColor()

        [iconView, messageLabel, settings].forEach {
            view.addSubview($0)
            $0.translatesAutoresizingMaskIntoConstraints = false
            view.bringSubviewToFront($0)
        }

        iconView.layer.superlayer?.insertSublayer(pulsator, below: iconView.layer)

        setupConstraints()

        pulsator.start()
        centerPulsator()
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        centerPulsator()
    }

    func centerPulsator() {
        iconView.layer.layoutIfNeeded()
        pulsator.position = iconView.layer.position
    }

    func openSystemSettings() {
        UIApplication.sharedApplication().openURL(NSURL(string: UIApplicationOpenSettingsURLString)!)
    }

    func setupConstraints() {

        // Icon and pulsator
        for attribute: NSLayoutAttribute in [.Width, .Height] {
            view.addConstraint(NSLayoutConstraint(item: iconView, attribute: attribute, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 70))
        }
        for attribute: NSLayoutAttribute in [.CenterX, .CenterY] {
            view.addConstraint(NSLayoutConstraint(item: iconView, attribute: attribute, relatedBy: .Equal, toItem: view, attribute: attribute, multiplier: 1, constant: 0))
        }

        // Settings Button
        view.addConstraint(NSLayoutConstraint(item: settings, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 50))
        for attribute: NSLayoutAttribute in [.Left, .Right, .Bottom] {
            view.addConstraint(NSLayoutConstraint(item: settings, attribute: attribute, relatedBy: .Equal, toItem: view, attribute: attribute, multiplier: 1, constant: 0))
        }

        // Message Label
        view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Bottom, relatedBy: .Equal, toItem: settings, attribute: .Top, multiplier: 1, constant: -40))
        view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Left, relatedBy: .Equal, toItem: view, attribute: .Left, multiplier: 1, constant: 20))
        view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Right, relatedBy: .Equal, toItem: view, attribute: .Right, multiplier: 1, constant: -20))
    }
}

I noticed in a few of the issues(#17) as well as my own experience, that the expected behavior of the Pulsator is to be centered in the superlayer, as opposed to the layer being at the superlayer's origin. I made a few changes to make the center of the superlayer the default position. The user can set a new property "autoCenter" to false if they wish to position it in a different manner. You may or may not disagree with this behavior. I also corrected a typo to a method name.

There's two things that I can't seem to get working or can't figure out. First, the .position protocol doesn't recognize the CGPoint value and is always set to the upper left corner of the screen. Next, how do I dismiss the pulsator after starting it?

Hi,

I was to trying add Pulsator into my project, but the annotation cant play pulse, what I'm doing wrong? My code below is :

#annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView!.canShowCallout = true
annotationView!.image = UIImage(named: "cars2x")

annotationView!.layer.superlayer?.insertSublayer(pulsator, below: annotationView!.layer)
pulsator.numPulse = 3
pulsator.radius = 240.0
pulsator.start()

The code is ok, no found errors, but pulse can't show up :/

hi, i add pulsator instance to avatar(UIImageView) in viewDidLoad then start, but i can not see pulsator, can u help?

DispatchQueue.main.async {
            let pulsator = Pulsator()
            pulsator.position = self.avatar.center
            self.avatar.layer.addSublayer(pulsator)
            pulsator.start()
        }

Any reason the Package.swift starts with // swift-tools-version:5.2?

Because of this the package cannot be added via Xcode 11.3.1. I think there is nothing Swift 5.2. specific in the source code.

Added feature to delay animation after calling start(). This also works in case of minimising app and reopening it. Even if we would call start() for several Pulsators with randomly delayed code, after app would receive applicationWillBecomeActive call, all pulsations would synchronise.

Hi, I'm trying to get a nice pulse below a round avatar view. The UIImageView itself is a rectangle spanning the entire screen, its image is a circle with aspect fit. When I add the pulsator view like this:

    let pulsator = Pulsator()
    pulsator.radius = 500
    pulsator.numPulse = 3
    pulsator.pulseInterval = 3
    pulsator.animationDuration = 5
    pulsator.backgroundColor = UIColor(red: 0, green: 0.623, blue: 0.890, alpha: 0.3).cgColor
    self.avatarImageView.addSublayer(pulsator)
    pulsator.start()

It works but the pulse comes from the top left of the UIImageView. I want it to spawn pulses from the center of the image, which is also the center of the UIImageView itself. How can I change the pulsator's position? Or how can I center it properly to the view?

Up until before I migrated my project to Swift 5, this worked fine: var pulse = Pulsator() pulse.isReversed = true

However now it doesn't. Does anyone have any idea why? Or what I should do about it?

For the first time it works when the view controller is opened. See the below screenshot, There is a NavigationController embed in.

After I click a subpage, which is under the NavigationController and then swipe back to the current page. It doesn't work correctly. After I performSegue and swipe back to the current page. Here is another screenshot,

Could you take a look please?

Can you help?

let markerView = UIImageView(image: GMSMarker.markerImage(with: UIColor.red))
            marker.iconView = markerView

let pulsator = Pulsator()
                    pulsator.numPulse = 3
                    pulsator.radius = 240.0
                    pulsator.repeatCount = .infinity
                    marker.iconView?.layer.insertSublayer(pulsator, above: marker.iconView?.layer)
                    pulsator.position = (marker.iconView?.layer.position)!
                    pulsator.start()