How to Determine Visibility of a View Controller

<p>Alex talks about unexpected intricacies and complexities he encountered trying to determine if a given view controller is visible trying to refresh data every time the user sees it. This seems like an overkill but it is more complex then you'd expect.</p><p>Table of states and viewDidAppear/Foreground notification calls: <a href="https://1drv.ms/u/s!AneU_VTSiGUEh2kmJVH376QmUG79?e=X13rSQ">https://1drv.ms/u/s!AneU_VTSiGUEh2kmJVH376QmUG79?e=X13rSQ</a></p><p>Sign up for Alex's upcoming video course about iOS System Design Interview: <a href="https://iosinterviewguide.com/system-design-interview">https://iosinterviewguide.com/system-design-interview</a><br />Sign up for Alex's upcoming video course about RIBs Architecture: <a href="http://ribsarchitecture.com/video-course-waitlist">http://ribsarchitecture.com/video-course-waitlist</a><br />Need to prepare for an iOS Engineer Interview?<br /><a href="https://iosinterviewguide.com">https://iosinterviewguide.com</a><br />Connect with us: <a href="https://twitter.com/insideiosdev">https://twitter.com/insideiosdev</a><br />Email us at <a href="mailto:hello@insideiosdev.com">hello@insideiosdev.com</a></p>