I use the screen size for some SwiftUI view layouts to adapt to various screen sizes. I have found that for some devices, such as the iPhone 13 mini, the screen size returned from UIScreen.main.bounds differs from the preview device and the simulator. Is this expected behavior?

One more similar to the previous problem. When I clicked the Resume button in the Preview section one hour ago... I have been still observing the process of "Preparing iPhone Simulator for Previews". Probably not developers but creators of xCode should support me and others to find a global solution... I would like to mention that the same process works properly when I use it for the Mac app development

Hi guys, when I trzy to build an app using SwiftUI the preview preparation lasts for a very long time and finally I see a message about timeout: Timed out waiting for connection to DTService after 15.0 seconds. In addition it appears a window with the second one that the app MobileCal quit working unexpectedly. So I don’t know what to do. I would like to learn and use SwiftUI. In Building apps for Mac has been working properly but for iOS it is the Mission Impossible….

Previews don't work when are inside of a static framework. Has anyone experimented it also? MessageSendFailure: Message send failure for update ================================== |  RemoteHumanReadableError: Unknown preview provider "Provider_Previews_" |   |  XCPreviewAgent does not contain a preview provider named "Provider_Previews_". Check your build settings to ensure the preview provider is compiled into your product. |   |  Mangled name: 0012Provider_0021Provider_Previews_V Thanks in advance

In my current project, previews barely work. Most of the time, the following error is displayed on top: Cannot preview in this file -- Unexpected error occurred Sometimes, refreshing works by clicking the Try Again button, but usually that takes multiple tries. When I click the Diagnostics button, the following error is shown: HumanReadableSwiftError ConfigurationError: noPreviewInfos(arch: "x86_64", sdkRoot: "/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.2.sdk") This happens both in Xcode 12 and the beta Xcode 12.2. Who has a solution for this?

I've tried to create a simple CoreData entity and use the PreviewProvider to display the results. This worked fine (The first entity that got displayed was the GoalInformation). After this i've extended my entity with a relationship to another entity. This is a screenshot from the Xcode editor: More information about the entities: This is my ContentView struct ContentView: View { @Environment(\.managedObjectContext) private var viewContext @FetchRequest( sortDescriptors: [NSSortDescriptor(keyPath: \Goal.information!.name, ascending: true)], animation: .default) private var items: FetchedResults<Goal> var body: some View { VStack { Text("count: \(items.count)") } } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() .environment(\.managedObjectContext, PersistenceController.preview.container.viewContext) } } The preview of the PersistenceController looks like this: static var preview: PersistenceController = { let result = PersistenceController(inMemory: true) let viewContext = result.container.viewContext for _ in 0..<5 { let newItem = GoalInformation(context: viewContext) newItem.name = "Name" let newItem2 = Goal(context: viewContext) newItem2.information = newItem } do { try viewContext.save() } catch { let nsError = error as NSError debugPrint("\(nsError.code) + \(nsError.debugDescription)") } return result }() The init of the same struct is this: init(inMemory: Bool = false) { container = NSPersistentCloudKitContainer(name: "goalz_two") if inMemory { container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null") } container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { debugPrint("\(error.code) + \(error.description)") } }) } When i want to display it by clicking "Resume" this is the error I receive. Some more infos: Error Domain=FBProcessExit Code=4 "The process crashed." UserInfo={NSLocalizedFailureReason=The process crashed., BSErrorCodeDescription=crash, NSUnderlyingError=0x600002e0fc00 {Error Domain=signal Code=4 "SIGILL(4)" UserInfo={NSLocalizedFailureReason=SIGILL(4)}}} ---------------------------------------- MessageSendFailure: Message send failure for relaunch ================================== | RemoteHumanReadableError: The operation couldn’t be completed. Transaction failed. Process failed to launch. (process launch failed) | | BSTransactionError (1): | ==error-reason: process launch failed | ==transaction: <FBApplicationProcessLaunchTransaction: 0x600001931340> | ==NSLocalizedFailureReason: Transaction failed. Process failed to launch. (process launch failed) | ==precipitating-error: Error Domain=FBProcessExit Code=4 "The process crashed." UserInfo={NSLocalizedFailureReason=The process crashed., BSErrorCodeDescription=crash, NSUnderlyingError=0x600002e0fc00 {Error Domain=signal Code=4 "SIGILL(4)" UserInfo={NSLocalizedFailureReason=SIGILL(4)}}} | ==error-description: Process failed to launch. I'm so confused, because it worked when there was no relationship and i've only created one entity. Hope someone can help me out... Using Xcode Version 13.2.1 on macOS 12.3