I am having trouble creating a sandbox tester account in App Store. I keep getting an error message saying there are one or more validation errors when I click on "Invite", but there are no indications of any errors. None of the fields are marked with red for an error.What is going on? Is there a limit of the number of sandbox tester accounts I can create? Is anyone else having trouble with this?

I signed out of iCloud in the iPhone 8 Simulator, and it has shown the screen saying "Removing iCloud data..." showing that it's working for a few hours now. When it did this before, I shut down the Simulator and when I opened the Simulator again, it shows that it never logged out of iCloud.

Anyone ever use CNFetchResult successfully? I find nothing on the internet, on stackoverflow, and in Apple Developer Forums. The only thing I have found is Apple Documentation for it. It says CNFetchResult is a Generic Class. What exactly does that mean. I found an explanation that gives its definition, but the rest of the explanation is very long winded.

Why am I getting an error message when I try to validate an archive that says, "No accounts with iTunes Connect access have been found for the team. iTunes Connect access is required for App Store distribution."?I have never gotten this error message before. What should I do?

I am preparing to submit an app for the very first time.Why is the default version number 1.0? Doesn't that 0 get truncated? Would it be better if I changed the version number to 1? Would it make a difference?

How do I sort an array of dictionary objects based on the value of the dictionary? I understand I should use the sorted method of the array, but I don't understand the notation that uses $0.1 and $0.0. Where is the documentation on that?

What is the word in programming that means that checks a condition for true or false, and if the condition is false, code is run to make that condition true, so that if the condition is checked again, it would be true? I believe I have seen something in Swift or Foundations that does this as applied to different things.

Why would I get an error when I'm uploading the app using the Xcode organizer that says the following?ERROR ITMS-90167: "No .app bundles found in the package"

Anyone have any recommendations on how to resize a screen video of an iPhone from 750x1334 to 1080x1920 as required by App Store Connect? Or any alternative solutions?

When I write code for a timer like below, the timer doesn't fire if the device is locked. How do I cause the code in the timer closure to run when the app is in the background? Are there any other ways to cause specific code to run at a certain time when the app is in the background? func setTimer(alarm: UTIAlarm) { let timer = Timer(fire: alarm.date!, interval: 0, repeats: false) { (timer: Timer) in print("timer fire \(self.dateFormatter.string(from: alarm.date!))") do { try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) } catch { print("Failed to setActive AVAudioSession from timer closure.") print(error.localizedDescription) } let predicate = MPMediaPropertyPredicate(value: alarm.mediaItem!.title, forProperty: MPMediaItemPropertyTitle) let query = MPMediaQuery() query.addFilterPredicate(predicate) self.playerController!.setQueue(with: query) self.playerController!.play() } runLoop.add(timer, forMode: .default) timers.append(timer) }

In Info.plist of my Xcode project, I see for instance "Executable file" is set to "$(EXECUTABLE_NAME)". I believe that "$(EXECUTABLE_NAME)" is called an environment variable. What I'd like to know is where is that environment variable set. I'd like to see where all the environment variables are set so I can use those values.

How would I check for a return key tap on the keyboard when a text view is first responder? So far I think I have to check the text parameter in the shouldChangeTextIn callback method of UITextViewDelegate. How would I check whether text is a return?

I'm getting message "This operation can fail if the version of the OS on the device is incompatible with the installed version of Xcode. You may also need to restart your mac and device in order to correctly detect compatibility." when I try to run an Xcode iOS project on my iPhone 8. I'm using Xcode 13.2.1 and iOS 15.4 on my iPhone 8. This post in this forums gives the solution to restart the iOS device and I did that and also restarted the mac. My Mac has macOS Monterey 12.3. My Xcode, Mac, and iPhone 8 all have the most recent updates. That post gives an answer for the same problem but with iOS 15.2. I have recently changed settings in my iPhone 8 in Accessibility. Could that affect anything?

What are guidelines for numbering the build number? Should it just start with 0 and increment by one each time I archive a project for distribution?

I included the Tests and UITests schemas when I created my Xcode project, but now I want to remove them. Even if I delete those groups, I still get build errors on the files and the files still show in the editor. How do I remove those files from my project for good?