I'm developing a game that supports GameKit turn based matches. What I don't understand is this: Is tapping on the Game Center notification push messages the only way for the GKTurnBasedEventListener to trigger? What if someone misses the push message (swiping it away by accident or something like that) but still wants to join? Is there some inbox somewhere where the pending messages can be seen or fetched? Also it was mentioned in a very old WWDC video (from 2013, I think that's the latest with information about turn based matches) that the notification also includes a badge for the icon. However, I do not understand how to implement that. Is there any documentation for that?

I'm developing a turn based game. When I present the GKTurnBasedMatchmakerViewController players can opt in for automatch instead of selecting a specific friend as opponent. How exactly does the matching work if a player doesn't specify anything explicitly? Does Game Center send push notifications in a round robin fashion to all friends and the first one to accept is then matched as opponent? Is this documented somewhere?

When I call requestWhenInUseAuthorization in state kCLAuthorizationStatusNotDetermined on iOS 18 Beta 4 in the simulator, all my apps just terminate without any error message in the Xcode console (black screen with an activity indicator for a second or two and then it goes back to the springboard). I do have the NSLocationWhenInUseUsageDescription set in my Info.plist file. When running the exact same apps in Xcode 16.0 beta 4 (16A5211f) but with a iOS 17 simulator attached, it is working as expected by showing the location authorization dialog. Is this a known issue or am I missing something?

I have a UITableView based up. It is running fine on all iOS versions including 15.0. It is also running fine on all iPadOS versions up to 14.x. But only on iPadOS 15.0 it crashes with the following error message: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier TextCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard' Is this a know issue? How can I debug it to figure out where the problem lies? Note that I actually do register the NIB as follows in viewDidLoad: static NSString *reuseIdentifierTextCell = @"TextCell"; [self.tableView registerNib:[UINib nibWithNibName:@"ChatTextCellCondensed" bundle:nil] forCellReuseIdentifier:reuseIdentifierTextCell]; It is crashing at this line in cellForRowAtIndexPath: cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentifierTextCell forIndexPath:indexPath]; Thanks!

Usually when a crash is happening on iOS when the simulator or device is attached to Xcode I get a crash reason like the following example: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSJSONSerialization dataWithJSONObject:options:error:]: value parameter is nil' When I look at the crashes of my published app in the Xcode Organizer using "Open in Project..." I see on which line of code the crash did happen. But is it also possible to get a reason for the crash like the above? I'm asking this about Xcode Version 13.0.