These kinds of videos is why I love this channel/website so much. I tried to implement this delay when we first created the search functionality, and ended up with the code down under, which is a bit different from yours in this video. I am very curious of what you think of this code, is it OK? var textCount = Int() func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) { textCount = searchText.count DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(300)) { let currentTextCount = searchText.count if self.textCount == currentTextCount { self.searchiTunes(searchText: searchText) } } }

Very useful video: Changes are very noticeable. I never liked the way search worked; so, I changed over to searchBarTextDidEndEditing instead. And, I made activityIndicator a computed property, because I was afraid it was still running invisibly. So, now I can stop it.

we waiting next episode :) , good job

challange + attributedText: override func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? { let activityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge) activityIndicatorView.color = .darkGray activityIndicatorView.startAnimating() activityIndicatorView.translatesAutoresizingMaskIntoConstraints = false view.addSubview(activityIndicatorView) NSLayoutConstraint.activate([ activityIndicatorView.topAnchor.constraint(equalTo: tableView.bottomAnchor, constant: 20), activityIndicatorView.centerXAnchor.constraint(equalTo: tableView.centerXAnchor) ]) let label = UILabel() let attributedText = NSMutableAttributedString(string: "Loading ", attributes: [NSAttributedStringKey.foregroundColor: UIColor.darkGray, NSAttributedStringKey.font: UIFont.systemFont(ofSize: 14)]) attributedText.append(NSAttributedString(string: "Podcast episode", attributes: [NSAttributedStringKey.foregroundColor: UIColor.purple, NSAttributedStringKey.font: UIFont.boldSystemFont(ofSize: 14)])) label.attributedText = attributedText label.textAlignment = .center label.translatesAutoresizingMaskIntoConstraints = false activityIndicatorView.addSubview(label) NSLayoutConstraint.activate([ label.topAnchor.constraint(equalTo: activityIndicatorView.bottomAnchor, constant: 6), label.heightAnchor.constraint(equalToConstant: 30), label.widthAnchor.constraint(equalToConstant: 200), label.centerXAnchor.constraint(equalTo: activityIndicatorView.centerXAnchor) ]) return activityIndicatorView }

Hello brian i got some error randomly when i clicked the episode In "toDisplayString()" of CMTime Extension when we try to access Int(CMTimeGetSeconds(self)) this code error said Fatal error: Double value cannot be converted to Int because it is either infinite or NaN then in console self = (CMTime) indefinite and also said query={ class = inet; "m_Limit" = "m_LimitAll"; "r_Attributes" = 1; sync = syna; } what is the error meaning? some times it goes well but some times it occurs theses errors

Very useful video Brian. May I clarify about weak self? The reason we use weak is to make the self optional. Does it then mean that if the self is deinit, the functions that are tied to the self will not be triggered? for instance: self?.enlargeEpisodeImageView() I am interpreting that when self is not present, the enlargeEpisodeImageView method will not be called?

At the Timer scheduled function on the completion block does I need [weak self] (timer) in ....?

When I am trying to run the app on a real device a CredStore error occurs while trying to load the audio. Any suggestions?

Hi Brian , you said in the video that you are going to provide some links on retain cycles.Where are the links? i did not understand this retain cycle thing...

Brian, How did you know that the player object had retain cycle problem when we had other objects ? Is it because of the sound was playing after we dismiss? or did you use the leaks tool of Xcode? by the way i used the leak tool and we have so many other leaks as well. Please make a video on this retain cycle thing, it is very difficult to understand and solve these leaks

Excellent homework exercise

Hi Brian could you please look at the code , this challenge I tried it worked for me but when I type fast the indicator keeps spinnig var activity = UIActivityIndicatorView() var label = UILabel() func handleActivityIndicator() { label = UILabel() label.textAlignment = .center label.text = "Currently Searching" label.font = UIFont.boldSystemFont(ofSize: 16) activity = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge) activity.color = .darkGray activity.translatesAutoresizingMaskIntoConstraints = false label.translatesAutoresizingMaskIntoConstraints = false view.addSubview(label) label.addSubview(activity) label.topAnchor.constraint(lessThanOrEqualTo: view.bottomAnchor, constant: 100).isActive = true label.centerXAnchor.constraint(equalTo: view.centerXAnchor, constant: 0).isActive = true label.addSubview(activity) activity.centerXAnchor.constraint(equalTo: (label.centerXAnchor)).isActive = true activity.bottomAnchor.constraint(equalTo: (label.topAnchor), constant: 0).isActive = true activity.heightAnchor.constraint(equalToConstant: 50).isActive = true activity.widthAnchor.constraint(equalToConstant: 50).isActive = true activity.startAnimating() } and then in fetchPodcasts function I added this code if podcast.isEmpty { self.handleActivityIndicator() } else { DispatchQueue.main.async { self.activity.stopAnimating() self.activity.hidesWhenStopped = true self.label.text = "" }

For the Search Delay Fixes, I found an alternative solution using an async approach with DispatchWorkItem. private var pendingRequestWorkItem: DispatchWorkItem? func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) { /* Cancel the currently pending item */ pendingRequestWorkItem?.cancel() /* Wrap the request into a work item */ let requestWorkItem = DispatchWorkItem { [weak self] in APIService.shared.fetchPodcasts(with: searchText) { (podcasts) in self?.podcasts = podcasts self?.tableView.reloadData() } } /* Save the new work item and execute it after 500 ms */ pendingRequestWorkItem = requestWorkItem DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(500), execute: requestWorkItem) } I was able to use this approach for the Firebase Chat App as well when loading the Messages Controller. Found this approach under: https://www.swiftbysundell.com/posts/a-deep-dive-into-grand-central-dispatch-in-swift

DispatchQueue 'qos' stands for 'quality of service'