I’m trying to use a Decimal as a @Property in my AppEntity, but using the following code shows me a compiler error. I’m using Xcode 16.1.
The documentation notes the following:
You can use the @Parameter property wrapper with common Swift and Foundation types:
Primitives such as Bool, Int, Double, String, Duration, Date, Decimal, Measurement, and URL.
Collections such as Array and Set. Make sure the collection’s elements are of a type that’s compatible with IntentParameter.
Everything works fine for other primitives as bools, strings and integers. How do I use the Decimal though?
Code
struct MyEntity: AppEntity {
var id: UUID
@Property(title: "Amount")
var amount: Decimal
// …
}
Compiler Error
This error appears at the line of the @Property definition:
Generic class 'EntityProperty' requires that 'Decimal' conform to '_IntentValue'
alexander216
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How do I access the SwiftData ModelContainer of my app inside the widget extension?
Following the guide to add a Widget Extension I’ve added the necessary target to my project and enabled App Groups.
I’ve seen that the Backyard Birds example code offers an example how to build this, but it encapsulates the SwiftData handling in a separate app package. Therefore the example simply points to the app package. Though, in my case I don’t host my SwiftData in an external app package, but simply inside the regular app target.
So, my question is how and at which point in code do I need to access the ModelContainer?
I have a Shortcuts action via an App Intent that I want only for active subscribers to use.
I have a shared class that handles all the subcription related things. But for some reason my code only works if the app is active in the background. Once the app is quitted and the user performs the Shortcut, the not subscribed error is thrown – even though the user is subscribed.
How can I ensure that my subscription check is done correctly, if the app isn’t open in the background?
My Code
App Intent excerpt:
@MainActor
func perform() async throws -> some IntentResult & ReturnsValue<MeterIntentEntity> {
// Validate that the user is subscribed.
// Cancels action with error message if not subscribed.
if SubscriptionManager.shared.userIsSubscribed == false {
throw IntentError.notSubscribed
}
// More Code …
// Finish and pass created value as result.
return .result(value: something)
}
Subscription Manager excerpt:
class SubscriptionManager: ObservableObject {
// A singleton for our entire app to use
static let shared = SubscriptionManager()
let productIds = ["my_sub1", "my_sub2"]
@Published private(set) var availableSubscriptions: [Product]
@Published private(set) var purchasedSubscriptions: [Product] = []
public var userIsSubscribed: Bool {
return !self.purchasedSubscriptions.isEmpty
}
init() {
// Initialize empty products, and then do a product request asynchronously to fill them in.
availableSubscriptions = []
Task {
await updatePurchasedProducts()
}
}
@MainActor
func updatePurchasedProducts() async {
for await result in Transaction.currentEntitlements {
do {
let transaction = try checkVerified(result)
if let subscription = availableSubscriptions.first(where: { $0.id == transaction.productID }) {
purchasedSubscriptions.append(subscription)
}
} catch {
Logger.subscription.error("Error loading users user's purchased products.")
}
}
}
Hello, I’m upgrading my app from Core Data to SwiftData. Due to my old setup the Core Data store has an explicitly name like „Something.sqlite“, because it was defined via NSPersistentContainer(name: "Something") before switching to SwiftData.
Now my goal is to migrate the Core Data stack to SwiftData, while moving it to an App Group (for Widget support) as well as enable iCloud sync via CloudKit.
Working Migration without App Group & CloudKit
I’ve managed to get my migration running without migrating it to an App Group and CloudKit support like so:
@main
struct MyAppName: App {
let container: ModelContainer
init() {
// Legacy placement of the Core Data file.
let dataUrl = URL.applicationSupportDirectory.appending(path: "Something.sqlite")
do {
// Create SwiftData container with migration and custom URL pointing to legacy Core Data file
container = try ModelContainer(
for: Foo.self, Bar.self,
migrationPlan: MigrationPlan.self,
configurations: ModelConfiguration(url: dataUrl))
} catch {
fatalError("Failed to initialize model container.")
}
}
var body: some Scene {
WindowGroup {
ContentView()
}
.modelContainer(container)
}
}
How To Migrate to App Group & CloudKit?
I’ve already tried to use the ModelConfiguration with a name, but it seems to only look for a .store file and thus doesn’t copy over the Core Data contents.
let fullSchema = Schema([Foo.self, Bar.self])
let configuration = ModelConfiguration("Something", schema: fullSchema)
Can someone help me how to do this migration or point me into the right direction? I can’t find anything relating this kind of migration …
As you can see in the following screenshot the „Water“ selection is an AppEnum which gets a nicely tinted SF Symbol. On the other hand, the „My Home“ is an AppEntity which also uses an SF Symbol, but doesn’t get the blue tint. Why?
Now my question is, how can I force the tint on the AppEntity as well?
I’ve defined it the following way:
var displayRepresentation: DisplayRepresentation {
DisplayRepresentation(
title: "\(title)",
image: .init(systemName: "house", isTemplate: true)
)
}
But even adding the isTemplate doesn’t work here …
I have an app that uses CoreData and I want to migrate to SwiftData. After following the Migrate to SwiftData session, I only need to point to my old Core Data file to read the old data and convert it to the new SwiftData format.
My question is how do I do this? Maybe worth mentioning is that my NSPersistentContainer(name: "Model") is different to my app name.
Possible Solution?
According to a Tweet by Donny Wals this is done this way:
By default a SwiftData ModelContainer will create its underlying storage in a file called default.store. If you want to change this so you can use an existing Core Data SQLite file, you can point your container to that file instead:
// point to your old sqlite file
let url = URL.applicationSupportDirectory.appending(path: "Model.sqlite")
let config = ModelConfiguration(url: url)
modelContainer = try ModelContainer(for: [
Movie.self
], config)
My Tested Code
@main
struct SwiftData_TestApp: App {
let url = URL.applicationSupportDirectory.appending(path: "Model.sqlite")
let config = ModelConfiguration(url: url)
let modelContainer = try ModelContainer(for: [
Item.self
], config)
var body: some Scene {
WindowGroup {
ContentView()
}
.modelContainer(modelContainer)
}
}
The problem here is that I don’t get it to work in the main app struct. When using this the way described in Dive deeper into SwiftData (at 6:58) I only get the error: Cannot use instance member 'url' within property initializer; property initializers run before 'self' is available
PS: There seems to be an issue with this WWDC session method anyway – see this post.
Hi there!
Back with Xcode 14 and iOS 16 there were two new app icon sizes introduced to iOS:
64pt @2x (128x128px)
64pt @3x (192x192px)
68pt @2x (136x136px)
What are those icons used for?
Neither the Xcode 14 release notes nor the Human Interface Guidelines are mentioning those sizes and what they are used for.
In previous Xcode versions the asset catalog had labels for each icon size. As Xcode 15 still doesn’t bring that feature back I’m still puzzled when those icon sizes are visible to the user.
Best! – Alex
Hello everyone!
Why do campaign URL analytics also include source types like App Store Search or App Store Browse?
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Maybe I’m missing something. Can someone explain the resoning behind this?
Hello there!
Does someone has recommendations or positive experience for tools to optimize the visibility in the Mac App Store?
Important are for example keyword tracking and analysis, store rankings and listings in the categories.
Most tools like Sensor Tower, AppFollow, App Radar or App Annie are only optimized for iOS apps. But what about the Mac? 😉
Thanks!
Alex