With the code below, JSON data is parsed and is stored in the variable data in the .onAppear function, however an empty set of data is passed to the Content view. How can that be fixed so that the JSON data passes to the DataView?
struct ContentView: View {
@State var data: [Data]
@State var index: Int = 0
var body: some View {
VStack {
DataView(data: data[index])
}
.onAppear {
let filePath = Bundle.main.path(forResource: "data", ofType: "json")
let url = URL(fileURLWithPath: filePath!)
data = getData(url: url)
}
}
func getData(url: URL) -> [Data] {
do {
let data = try Data(contentsOf: url)
let jsonDecoded = try JSONDecoder().decode([Data].self, from: data)
return jsonDecoded
} catch let error as NSError {
print("Fail: \(error.localizedDescription)")
} catch {
print("Fail: \(error)")
}
return []
}
}
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I'm trying to use URL structure in the foundation framework and it is failing to build, returning a nil value. Could it be trying to evaluate the string I am giving it as a variable for its argument at build time? Is there a test argument I can give URL to see if it can return a non-nil value? (of URL type)?
Hi,
I have a couple of questions in regards to testing in-app purchases. I tested the subscription on a device but I'm not sure how to reset so I can test again. I didn't see the subscription in device settings or in Debug -> StoreKit -> Manage Subscriptions window. Additionally, I was wondering if there was a way to detect the subscription being made. I implemented this, but I'm not sure if that will work:
.onChange(of: Product.SubscriptionInfo.RenewalState.subscribed) {
if Product.SubscriptionInfo.RenewalState.subscribed == .subscribed {
}
}
Video Playback on iOS 18 public release is asinine. I use video playback to show slow-motion video frame by frame to my students and the video can only be shown at like 3/5 of the screen size (just like Apple fouled up screenshot editing about a year ago)
If you try to view video in the full screen you can’t scrub through and see time stamps or play frame by frame sliding left to right. It’s absolutely ridiculous. 2 out of 3x the video timeline finishes fully right and I haven’t watched the full clip.
Here’s a video showing the issue how at the small default size I can see the entire timeline and play the full video from beginning to end, but when I go to full screen and/or zoom in or move the screen around the timeline doesn’t work and you can’t scroll through the full video!
Need the video to not condense in size on the screen and play the full height / width of the screen. Also not have the text of the location showing above the screen. Way too much clutter. The reduced size of the video for editing issue started with photos several updates ago and now Apple idiotically brought a terrible flaw from photos to videos as well. Ugh.
Hi,
I have the following code, which for some reason is not working as expected. I have an .onAppear and a .task function that isn't running, which I can see isn't running because nothing is printing. Any guidance would be greatly appreciated. Thank you.
struct ContentView: View {
var body: some View {
ZStack {
switch view {
case .view1: View1()
case .view2: View2()
case .view3: View3()
case .view4: View4()
case .view5: View5()
default: SubscriptionStoreView(groupID: "")
}
}
.onAppear() {
view = .view6
print("test 1")
}
.task {
print("test")
await refreshPurchasedProducts()
}
}
func refreshPurchasedProducts() async {
// Iterate through the user's purchased products.
for await verificationResult in Transaction.currentEntitlements {
switch verificationResult {
case .verified(let transaction): print("verified")
case .unverified(let unverifiedTransaction, let verificationError): print("unverified")
default: print("default")
}
}
}
}
hi, i have an objc ipad application that use xib with zooming for adapt to the screen (until ios18) but with ipad os 26 will be displayed wrong
I am struggling with exactly how to set up SwiftData relationships, beyond the single relationship model...
Let's say I have a school. Each school offers a set of classes. Each class is taught by one teacher and attended by several students. Teachers may teach more than one class, but only at one school. Similarly students may attend more than one class, but only at one school. Classes themselves may be offered at more than one school.
Can someone create a class for School, SchoolClass, Teacher, and Student with id, name, and relationships... I have tried it unsuccessfully about 10 different ways at this point.
My most recent is below... I am struggling getting beyond a school listing in the app, and I'll cross that bridge next. I am just wondering if all the trouble I am having is because I am not smart with the class definitions. And wondering if this is to complex for SwiftData and CoreData is the requirement.
This is not a real app, just my way of really trying to get a handle on Swift Data models and Navigation.
I am very new to Swift, and will take any and all suggestions with enthusiasm! Thanks for taking the time.
import Foundation
import SwiftData
@Model
class School: Identifiable {
var id: UUID = UUID()
var name: String
var mascot: String
var teachers: [Teacher]
var schoolClasses: [SchoolClass]
init (name: String, mascot: String = "", teachers: [Teacher] = [], schoolClasses: [SchoolClass] = []) {
self.name = name
self.mascot = mascot
self.teachers = teachers
}
class SchoolClass: Identifiable {
var id: UUID = UUID()
var name: String
var teacher: Teacher?
var students: [Student] = []
init (name: String, teacher: Teacher? = nil, students: [Student] = []) {
self.name = name
self.teacher = teacher
self.students = students
}
}
class Teacher: Identifiable {
var id: UUID = UUID()
var name: String
var tenured: Bool
var school: School?
var students: [Student] = []
init (name: String, tenured: Bool = false, students: [Student] = []) {
self.name = name
self.tenured = tenured
self.students = students
}
}
class Student: Identifiable {
var id: UUID = UUID()
var name: String
var grade: Int?
var teacher: Teacher?
init (name: String, grade: Int? = nil, teacher: Teacher? = nil) {
self.name = name
self.grade = grade
self.teacher = teacher
}
}
}
Hello
So I have an application which is in the Apple store. I wanted to fixe some issue therefore i created update build with the following:
• Reworked Character Physics: Improved responsiveness and movement for smoother, more controlled gameplay.
• Bug Fixes & Performance Enhancements: Fixed critical issues affecting gameplay consistency and stability. Players will now experience better performance and more accurate controls.
• Mac Catalyst Fixes: Improved support for macOS, fixing issues related to UI scaling and responsiveness.
The changes above are basically all there is. Now it seems that i am not able to pass review as it constantly marks design spam and not give anything in particular. Whats up with that ?
I have a subscription group with two individual subscriptions configured but when trying to load the SubscriptionStoreView I get the error:
"Subscription Unavailable: The subscription is unavailable in the current storefront."
When I try to load the ProductView, it appears to be stuck in a loading screen. I am running the app on a device that is signed into a sandbox account. Any guidance would be greatly appreciated. Thank you.
Hi! I've detected that in iOS18 launch screen colors differs from the defined ones, that is, if I create a launch screen with a color like #ff0000 (red) and the initial view controller is a view controller with the same color as background, I can see the transition between launch screen and the initial view controller because the launch screen color is different from the other one (dark in this case).
I've tested it with several colors: left side is the launch screen and right side is the initial view controller. Both views created with IB using the same colors (it also happens with background images using colors)
Is this an intentionall behavior? If so, theres a way to disable it? I need the transition between the launch screen and my initial view controller to be non perceptible...
Thanks!
I'm programming my constraints in my video game, which is working good so far until I ran into my most important interactive storyboard. I have three buttons that move back and forth on the Y position each time they are hit. The buttons Y positions only change to view.safeAreaLayoutGuide.centerYAnchor, constant: 100 or view.safeAreaLayoutGuide.centerYAnchor, constant: 200 or view.safeAreaLayoutGuide.centerYAnchor, constant: 300
The strange part is the button that is in the Y 100 stays visible and I can hit the button that is in the Y 100. The buttons in the Y 200 and Y 300 positions are visible until after one or two hits, then the button that is in Y 300 position disappears, then after another hit or two the button that is in the Y 200 position disappears but the button that is in the Y 100 is still visible.
I cleared all my constraints to narrow it down to clear view of the constraints that is causing the problem. I do not think this Log Noise. Below is the error log:
load_eligibility_plist: Failed to open //private/var/db/os_eligibility/eligibility.plist: Operation not permitted(1)
1
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x302aa7610 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 100 (active)>",
"<NSLayoutConstraint:0x302acb480 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x302acb480 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x302aa7750 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 200 (active)>",
"<NSLayoutConstraint:0x302acb5c0 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 100 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x302aa7750 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 200 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x302aa7890 UIButton:0x10c257c00.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>",
"<NSLayoutConstraint:0x302acb700 UIButton:0x10c257c00.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 200 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x302aa7890 UIButton:0x10c257c00.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
3
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x302aa7610 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 100 (active)>",
"<NSLayoutConstraint:0x302acb480 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x302acb480 UIButton:0x10c257600.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 300 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x302aa7750 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 200 (active)>",
"<NSLayoutConstraint:0x302acb5c0 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 100 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x302aa7750 UIButton:0x10c257900.centerY == UILayoutGuide:0x3030f0c40'UIViewSafeAreaLayoutGuide'.centerY + 200 (active)>
I've been losing countless hours of work trying to create a variable-width SF Symbol that supports interpolation, no dice. Both Sketch and Figma output SVGs that are not interpolatable.
After numerous hours of research, I believe it's due to the fact that when outlining strokes, these editing tools introduce artifacts into the shapes — sometimes I get very short line segments where there would not be needed, sometimes a 3-point curve gets expanded to a 4-point curve, but not in all weights. It's always inconsistent.
So my only question is rather simple: what's the graphic editing tool Apple uses to create hundreds of symbols? Clearly you cannot edit the stroke of ALL curves by hand, it's inhumane.
Sketch? Figma? Illustrator? Inkscape? Affinity? I'd like a definitive answer from someone internal so that I can at least try to use the same tool as you without wasting more hours.
Hi,
I am trying to create a custom SF Symbol from an SVG file created with Affinity Designer but, even though my SVG file look perfect in Firefox for example compared to the exported custom.circle.svg file (as recommended in Apple's documentation), I fail to get rid of this error:
"The provided variants are not interpolatable"
My creation process using Affinity Designer is:
Export as SVG file
Duplicate the custom.circle.svg file exported from the SF Symbols app
In the new file, replace the 3 "path" tags in the "g" sections "id="Black-S", "Regular-S", "Ultralight-S" with the paths from the SVG file exported from Affinity designer
Set the 3 transform matrices to "matrix(1 0 0 1 0 0)" for the 3 variants to be generated at the correct location.
Verify in an SVG viewer that the file looks correct.
Import the file via Drag&Drop into the SF Symbols app.
What is wrong with my file?
Thank you in advance for any help,
Marc
mySymbol.svg.txt
Hi community my name is Adam Robles. I have a question. I recently downloaded the beta on my iPad Pro 13 inch and I noticed where are the iPad wallpapers I only get one wallpaper, but where what happened to the wallpaper that was released with iPad last year
My app lets users create things with text, and I've included Apple fonts so users can format their text with them. These were fonts I found in the Font Book app that comes with macOS. My assumption is that these, like the San Francisco font, can be distributed with apps.
Do I need to attribute these fonts to their creators and publish a license in my "About" page? If so, where do I find the license(s) and what is the proper way of publishing them? Is there anything else I should know?
Please let me know if this should've been posted under a different topic and tag
Hi,
I would like to make an educational app for helping my students to learn about malaria diagnosis and need to put some animal icon.
In the tabview, is it possible to use system images like monkey, bird, mouse. I cannot see these animals in SF symbol list.
How can I achieve the result of buttons glass effect like sample videos that was show at de WWDC25? I tried a lot of approaches and I still far a way from the video.
I would like something like the pictures attached. Could send a sample code the get the same result?
Thanks
Hello Apple Engineering Team and Fellow Developers,
I’ve been using iOS 26 beta from day one and closely following all its improvements. One feature that significantly enhances the user experience is the automatic hiding of the Home Bar (the bottom navigation indicator) after a few seconds of inactivity in menus and apps.
This subtle but powerful UI behavior not only increases immersion but also reduces distractions, making navigation smoother and visually cleaner.
I strongly urge the Apple team to integrate this feature into the upcoming iOS 18.6 update. Bringing this polished interaction to iOS 18 users would greatly improve usability and keep the interface modern and elegant.
Thank you for your continuous efforts in refining iOS.
Looking forward to seeing this improvement officially adopted soon!
Best regards,
[ERFANEX]
I have two views I've applied Liquid Glass to in Swift UI. I've noticed that depending on the height of the view the material changes and I'm not sure why. See the attached screenshot. Both views add the liquidGlass style in the same way but behave very differently on the same background.
Ideally I'd like them to look the same as the bottom one. Is that the same as the clear style?
I have many Apple devices, such as macbook, iPad and iPhone. It's very convenient for me to transfer files between devices. However, when I want to send files to my own device in public places, I often click on the wrong recipient because the list avatar keeps changing. I hope the list of recipients can be grouped One group is my own device (or the one I often send to), and the other group is other devices. When the user is about to send, the mouse will be in a relatively fixed and mentally expected area. I feel that this can reduce the probability of sending wrongly