Questions tagged [swift]
Swift is a general-purpose programming language developed by Apple Inc first released in 2014 for its platforms and Linux. Swift is open-source. Use the tag only for questions about language features or requiring code in Swift. Use the tags [ios], [ipados], [macos], [watch-os], [tvos], [swiftui], [cocoa-touch], and [cocoa] for (language-agnostic) questions about the platforms or frameworks.
swift
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When i choose 3rd date the date range won't be nil in swift
i use AirBnb's horizon calendar and the issue is when i click on a date out of range i cant make the selectedDateRange nil. In this date picking logic what am i missing?
.days { day in
DayView(...
- 15
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11
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How to manage global state in SwiftUI and persist it
Continuing learning SwiftUI (which is so much fun) I'm doubting the way I'm managing (and storing) global state in my app and storing it. There are two categories of data that I need to manage. The ...
- 133
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7
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StoreKit 2 Xcode Manage Transactions - subscription purchased but "unfinished"?
I am using SubscriptionStoreView in conjunction with the modifiers .onInAppPurchaseCompletion, .subscriptionStatusTask, and .manageSubscriptionSheet to allow my users to choose from either a monthly ...
- 95
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8
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How to force releasing memory
I’m trying to iterate over a large file tree reading URL’s and creating hash values, but there’s a memory leak I can’t fix. The consumed memory is growing until the app stopp working. For testing ...
- 29
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1
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18
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Is it safe to call an optional closure without [weak self]?
I have two classes, class A and class B. In class A I have declared an optional closure and from class B I am calling that closure. In class B, you can see in callTapA function I am calling the ...
- 1,557
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12
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What is the proper way to refactor a class from @ObservableObject to @Observable?
I would like to refactor the following code using @Observable instead of @ObservableObject.
import Foundation
import FirebaseAuth
enum AuthenticationState {
case unauthenticated
case ...
- 41
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9
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Autofill suggestions not showing up for QR-based verification code
I am trying to integrate autofill for a verification code in one of my iOS projects. I have added an apple-app-site-association file to my domain. It was integrated successfully, as now the iOS ...
- 430
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9
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Limitations about Indexed Items for Spotlight with CSSearchableIndex and Performance?
Is there a limit for number of items (CSSearchableItem) in Core Spotlight CSSearchableIndex in iOS 9?
According to this topic, the number of indexes I can add is 32767.
Won't there be performance ...
- 1
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29
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An iOS application crashed or was closed, how do know which screen was last viewed by the user?
An iOS application crashed or was closed by the user or closed because the device has no battery, how I retrieve the information for which screen was last viewed by the user?
I want to save this ...
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12
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Issue with Dequeuing Custom Cells in Main Storyboard
I'm encountering an NSInternalInconsistencyException when trying to dequeue custom cells designed in XIB files in my main storyboard. The error message is:
unable to dequeue a cell with identifier ...
- 43
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16
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How should SwiftUI accessibiltyActions be announced in VoiceOver?
I'm trying to add accessibilityActions to specific views in an app I'm working on for a client.
I'm using the accessibilityAction(named:) viewModifier. I can't share the client code, but it's ...
- 131k
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17
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OSLog sometimes shows error instead of including string
Logger().fault("Example: \(myStr, privacy: .public)")
Why do I get the following instead of the contents of myStr sometimes? myStr looks fine in the debugger and not like this.
Example: <...
- 1,264
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1
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29
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How can I identify and delete dead code in Xcode Swift
Is there a way to get Xcode to show a warning/error for unused functions and properties?
I have some dead dummy code left over from refactoring but no way to easily identify and delete it.
I'm in a ...
- 16.3k
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12
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I want to create a feature on my ipa which allows people to go onto the files of the ipa and import their own .json file which appears in the app
I don't know how to do this
I have not tried anything yet, I don't even know where to start to be honest I am new to coding and was curious to see how this would work, if someone can put me in the ...
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39
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View in infinite creation loop
In my app, the navigation should be ArmyListView -> ArmyListDetailsView -> IncludedUnitScreenView
My ArmyListView screen creates a NavigationStack and moving on to the ArmyListDetailsView works ...
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10
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Keyboard Extension Input Field Not Working
I've been working on a custom keyboard extension and encountering an issue where I can't input text into the Custom TextField. Even when the TextField is selected (indicator is on), the input still ...
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1
answer
24
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Get the bounds of overflowing objects to shrink to parent view
I'm making a representation of the unit circle and I have the point labels arranged in a circle. I know the origin of the labels are at the center, so they overflow the parent.
Whats the best way to ...
- 2,335
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14
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After adding Notification Extension, my apple pay and push notifications for fastlane stopped working
I am using fastlane to create and submit an application to testflight. Everything worked until I added Notification Content Extension and Notification Service Extension. Now apple pay and push ...
- 1
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11
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Live Activity not workin on Simulator
Live Activity isn't working on the iOS 17.5 Simulator but works on a physical device. When I first close the app, it updates once, but then nothing updates anymore.
Supports Live Activities - YES
...
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12
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CMAC with Swift OpenSSL 3 fails at init
I'm trying to compute a CMAC using OpenSSL 3 EVP_MAC APIs in Swift, and I am stuck at the EVP_MAC_init call, which always fails. I've tried many different combinations, without success.
If anyone ...
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2
answers
53
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Swift not using initialiser when creating a view
I have a specific SwiftUI View that I am using to add and edit variables. When I add the variable, I call the view using this:
Button(action: {
showingDeviceManager.toggle()
}, label: {
Text(&...
-1
votes
1
answer
28
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Gradient layer on UiView
I am trying to provide gradient layer to the View on created XIB. I have to give gradient colors with combination of 5 colors. But unfortunately gradient is not working.
These are colors array:-
let ...
- 39
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24
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SwiftUI modifier and view parameter [closed]
Is they any simple way to find a current Modifiers for a view . Working on multiple framework often is not easy to remember every Modifiers for a view
In flutter all view modifier will be as parameter ...
- 458
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24
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How to change UIAlertAction's image position?
I want to create a popover menu with UIAlertController which includes customize action items, user can define style like font-size , background-color, alignment and Icon Position (Leading / Trailing), ...
- 13
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39
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Main thread being blocked fetching from Firebase
Every time the posts are fetched from cache or not from cache, the app freezes and main thread seems to be blocked. What is causing it to be blocked in this code? I noticed it happens when a lot of ...
- 19
1
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1
answer
21
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SwiftUI Xcode project - Can I change the struct name in the automatically generated file whose name is the app's name?
Suppose I create a new Xcode project of SwiftUI with app name "ExampleApp", then Xcode automatically generates a file ExampleAppApp.swift that contains the following code:
@main
struct ...
0
votes
1
answer
25
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Bug in the implementation of system, dark and light mode where system theme isn't getting applied to the sheet
I am implementing a picker view which has 3 options: system, light and dark mode. Whenever an option is selected, it gets persisted to whole app by the use of @AppStorage.
Light mode and dark mode ...
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0
answers
18
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Changing the background color of .searchable search bar is not setting it to normal black color
I have a search bar set up using the .searchable modifier on a SwiftUI View, and I would like to set the background color of the bar text field to be Color.black.
I've attempted to change the ...
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1
answer
30
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Swift – Authenticate and simultaneously fetch user Id from Firebase
Very new to Swift and just following some tutorials
I have a loginViewViewModel with a function to login a user.
However, I also want to grab the uid from Firebase after .signIn and print to the ...
- 5,871
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31
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Button only working around the button and not on the actual button
My Add assignment button only works when I click the red around and not the button that I created.
I'm new and was wondering how to fix this.Photo of issue
ZStack {
Spacer()
Button(action: {
...
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8
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SCNView merging two SCNNode
I'm working with Apple's RoomPlan and I'm struggling to load all the nodes from the CapturedStructure into SCNNode.
I was able to browse through the floors, doors, windows, walls and object and render ...
- 258
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18
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iOS 17 MapKit .standard doesn't allow for a globe view when zoomed out
I'm working on setting up a very basic mapview with MapKit for my iPhone on iOS 17. I noticed that the Apple maps app doesn't have this issue but I really couldn't find much about this topic other ...
- 21
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1
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24
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Easing functions for using CADisplayLink
I need to manually animate something frame by frame in SwiftUI using CADisplayLink, which provides me frame to frame updates. For animating a value from a to b in a linear fashion, the implementation ...
- 2,541
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1
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20
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How can I make my app appear higher than all other apps in Spotlight search results?
I’m working on an iOS application and would like to improve its visibility in Spotlight search results. Specifically, I want my app’s content to appear higher in the search results compared to other ...
- 1
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32
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How can I clear a Combine debounce when a trigger value is found? [closed]
How can I setup a Combine pipeline that will debounce all values except for a trigger value which will publish immediately and flush/clear any pending value in the debounce?
For a simple example case… ...
- 1,713
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36
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How to move between view controllers with using custom navigation controller? [closed]
I have a custom navigation controller. I want to go to next controller. And show custom back button. I use this code to do it:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt ...
- 27
-1
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1
answer
58
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How to use a function outside of the class?
I want to use this code:
var buttonNumber = 0
func settings() {
CNavigationViewController().contextMenu()
}
class CNavigationViewController: UINavigationController {
...
@objc func ...
- 27
1
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1
answer
29
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How can I mock an Objective-C class from Swift code for unit testing?
I'm trying to unit test a Swift class that depends on an Objective-C class. Call these SwiftClass and ObjcClass.
I created a protocol that contains the methods/properties of ObjcClass that SwiftClass ...
- 245
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2
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49
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Parent view ignore safe area but child view respect safe area
I am building a custom full screen cover that can be dragged down with a gesture like the podcast app.
For the transition modifier with edge as bottom, it uses the bottom edge of the parent view thus ...
0
votes
1
answer
59
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Managing ViewModels
This is more of an architectural question.
I am working on a personal project using the Rick and Morty API, following this design, building with Swift and SwiftUI using the MVVM pattern.
I have ...
- 53
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0
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38
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How to integrate SwiftBullet SDK in a Swift project using Xcode?
I am new to Swift and Xcode, and I'm currently trying to integrate the SwiftBullet SDK into my SwiftUI project. I have followed the documentation, but I haven't been able to achieve the desired ...
-3
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20
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How can I create a Numbers spreadsheet programmatically using Swift? [closed]
I want to have ability for my app to export data so user can print it.
Data represented as list of words.
I am thought about .xlsx format but didn't found easy way to do it.
Is any API or Lib or any ...
- 63
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1
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55
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How can I make my method async when it calls a library method requiring a completion?
In my app I'm using a third party library, AppGuard, to log users in. To do so the library has a method that takes a completion. Recently I got the suggestion to convert it to async/await as actors ...
- 133
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23
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How to call "AutoFill Password" dialog like click password button in iOS system keyboard?
I want call "AutoFill Password" dialog like click password button in iOS system keyboard. Is Any iOS API can do that?
I've try using ASAuthorizationPasswordRequest and ...
0
votes
1
answer
37
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iOS Notification is permanently denied - can't find in settings for manual enabling
I implemented push notification in iOS and android, using APN Apple Push notification and firebase respectively. In iOS first request for notification is from native side (appDelegate/swift code) and ...
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0
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36
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App crashing when task switches to another app and goes to background when a task is ongoing
I have a view that is set to disappear after 5 seconds and it's working okay normally aside from this scenario:
user does the action that makes the view show
user immediately switch to another app ...
- 13
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0
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15
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Lagging Video Feed Using VNGeneratePersonSegmentationRequest in macOS Camera Extension App
I'm developing a macOS application using Swift and a camera extension. I'm utilizing the Vision framework's VNGeneratePersonSegmentationRequest to apply a background blur effect. However, I'm ...
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39
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Custom Scroll View Indicator does not animate correctly
I created a custom scrollview indicator that can be dragged but it doesn't work completely right and it's not smooth. It has a few problems: Scroll End does not fire when the scroll view stops so the ...
- 48
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26
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Swift faster way to retrieve exif data from PHAsset
I'm working on a photos app on iOS, where I have to extract the camera information of user's photos for displaying.
The problem I am facing is that the process turns out to be extremely slow and ...
- 1,583
1
vote
1
answer
49
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Update values in a dictionary based on changes made to another dictionary
I would like to know if there is a way to automatically update the value in a dictionary based on changes made to values in another dictionary.
I have 2 dictionaries as follows:
enum ...
- 192