Recent questions tagged Swift

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swift - How to access files in iCloud Drive from within my iOS app?

Is there a way to choose file from iCloud Drive similar way to UIImagePickerController()? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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702 views

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swift - Xcode 7 compile error : "Command failed due to signal: Segmentation fault: 11"

Yesterday I installed the official Xcode 7 and when I tried to open one of my Swift projects, appeared an ... s okay, no compilation errors. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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983 views

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swift - How to configure ContextMenu buttons for delete and disabled in SwiftUI?

I tried to configure the button in the contextMenu, but it's not working. Text("A label that have context menu") ... { action in // remove it } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - Handle timeout with Alamofire

Is it possible to add timeout handler for Alamofire request? In my project I use Alamofire this way: init() ... =The request timed out.} See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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793 views

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swift - How do I modify the background color of a List in SwiftUI?

I'm trying to recreate an UI I built with UIKit in SwiftUI but I'm running into some minor issues. I want the ... the area I'm looking for } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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876 views

1 answer

swift - EXIF data read and write

I searched for getting the EXIF data from picture files and write them back for Swift. But I only could find ... how can I write it back? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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963 views

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swift - LiDAR and RealityKit – Capture a Real World Texture for a Scanned Model

Task I would like to capture a real-world texture and apply it to a 3D mesh produced with a help of ... texture for a reconstructed 3D mesh? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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swift - What's the difference between a protocol extended from AnyObject and a class-only protocol?

Both this declaration protocol SomeProtocol : AnyObject { } and this declaration protocol SomeProtocol : class { } seem to ... Xcode 6.3.1. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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466 views

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swift - What's the difference between using ARAnchor to insert a node and directly insert a node?

In ARKit, I have found 2 ways of inserting a node after the hitTest Insert an ARAnchor then create the node in ... why one way or the other? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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817 views

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swift - SwiftUI - Is there a popViewController equivalent in SwiftUI?

I was playing around with SwiftUI and want to be able to come back to the previous view when tapping a button, the same ... back to A") } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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686 views

1 answer

swift - TabView resets navigation stack when switching tabs

I have a simple TabView: TabView { NavigationView { VStack { NavigationLink(destination: Text("Detail")) { Text("Go ... do I work around this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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864 views

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swift - iOS SwiftUI: pop or dismiss view programmatically

I couldn't find any reference about any ways to make a pop or a dismiss programmatically of my presented view with ... it will stays like this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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682 views

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swift - iOS Segue - Left to Right -

I've read the other posts on segues but none solve my question. Simply put, my ViewControllers are ordered, ... an IBAction for my back-swipe See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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swift - Include SwiftUI views in existing UIKit application

Is is possible to build views with SwiftUI side by side with an existing UIKit application? I have an ... .xib Working alongside each other See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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578 views

1 answer

swift - AlamoFire asynchronous completionHandler for JSON request

Having used the AlamoFire framework I've noticed that the completionHandler is run on the main thread. Im wondering if ... ); } }); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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482 views

1 answer

swift - try, try! & try? what’s the difference, and when to use each?

In Swift 2.0, Apple introduced a new way to handle errors (do-try-catch). And few days ago in Beta 6 an ... 3 keywords, and when to use each? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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935 views

1 answer

swift - WkWebView does not load links to pdfs

The WKWebView is not loading links. I am linking users to a privacy policy page, and the ... decisionHandler(WKNavigationResponsePolicy.allow) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

swift - What is the point of having two different names for the same parameter?

func mapEachElement (inArray arr: [Int], withFunc aFunc: (Int)) Why would there be "inArray and then "arr"... ... read, why are they even used? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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510 views

1 answer

swift - Extensions in my own custom class

I was reading through another SO question, Swift do-try-catch syntax. In his answer, rickster creates an ... else will be accessing it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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643 views

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swift - NEHotspotHelper.register not received call back iOS11

I am working on NEHotspotHelper and trying to register but not receiving call back. Firstly, I enabled Capability : ... I am missing any step. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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787 views

1 answer

swift - Multi-touch gesture in Sprite Kit

I'm working in Swift with Sprite-Kit using XCode 6, and I have many different nodes but for the moment I ... the node touched by the finger ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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624 views

1 answer

swift - Round Double to closest 10

I would like to round a Double to the closest multiple of 10. For example if the number is 8.0 then round to 10. ... to 0. How can I do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

1 answer

swift - CocoaPods and Carthage

I had a project with both Carthage and Cocoapods. They both have one common dependency (PureLayout, to be precise) ... 's or Cocoapods' one? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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687 views

1 answer

swift - How to avoid force unwrapping a variable?

How do I avoid using the ! operation doing a force unwrap as using this is usually a bad option. What is the ... , we're going to fight" O_O See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

1 answer

swift - SwiftUI iterating through dictionary with ForEach

Is there a way to iterate through a Dictionary in a ForEach loop? Xcode says Generic struct 'ForEach ... to RandomAccessCollection or something? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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666 views

1 answer

swift - Deletable Table with TextField on SwiftUI

Environment Xcode 11.2.1 (11B500) Problem In order to implement editable teble with TextField on SwiftUI, I ... Foreach and TextField. Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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505 views

1 answer

swift - iOS linkedin authentication

I started developing an app for iOS in Swift. Now I am at the part where I need to create a login system. ... I have no clue how this works. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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965 views

1 answer

swift - How to convert a View (not UIView) to an image?

Similar to this thread: How to convert a UIView to an image. I would like to convert a SwiftUI View rather than a UIView to an image. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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