Recent questions tagged Swift

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swift - ARKit 3.5 – How to export OBJ from new iPad Pro with LiDAR?

How can I export the ARMeshGeometry generated by the new SceneReconstruction API on the latest iPad Pro ... s SceneReconstruction documentation. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - Get camera field of view in iOS 11 ARKit

I'm using a ARSCNView from ARKit to display live a video feed from the camera on the iPad. I have the ... // Retrieve camera FOV here } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - UITableView load more when scrolling to bottom

I would like to load more data and create additional cells when the user scrolls to the bottom of the table. ... .row] as! NSDictionary) } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - Changing The value of struct in an array

I want to store structs inside an array, access and change the values of the struct in a for loop. struct ... change the value of the struct. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - Draw SceneKit object between two points

Having made some progress in the geometry side of things I'm moving on to putting together an entire scene. ... , or a similar solution? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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747 views

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swift - How to set a new root view controller

I wonder if its possible to set a new root VC? My app gets init with a uinavigation controller that has a table ... act as the new root VC. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

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swift - Using some protocol as a concrete type conforming to another protocol is not supported

I'm trying to mix generics with protocols and I'm getting a really hard time xD I have certain architecture ... 'GetUserView' is not supported See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - SwiftUI. How to change the placeholder color of the TextField?

I want to change the placeholder color of the TextField, but I can't find a method for it. I tried to set ... there is no API for this yet? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - How do I change UIView Size?

I have trouble with modifying my UIView height at launch. I have to UIView and I want one to be screen size * 70 ... . Am I doing it all wrong? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - When to use inout parameters?

When passing a class or primitive type into a function, any change made in the function to the parameter will ... case for an inout parameter? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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822 views

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swift - iOS 9 searchBar disappears from table header view when UISearchController is active

The structure: View1 (click a button) -> present modally (MyModalView: UITableViewController) MyModalView has ... deeply appreciated Cheers. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - PHAsset to UIImage

I'm attempting to create a UIImage (like a thumbnail or something) from a PHAsset so that I can pass it into ... the asset as a UIImage. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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632 views

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swift - Disable a Button

I want to disable a button (UIButton) on iOS after it is clicked. I am new to developing for iOS but I think ... I couldn't do that on swift. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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882 views

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swift - Type casting in for-in loop

I have this for-in loop: for button in view.subviews { } Now I want button to be cast into a custom ... .subviews But neither does that work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

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swift - Adding dark mode to iOS app

I am trying to add a theme to my app (a dark theme). So when the user clicks an activity switch it would ... this might not make to much sense. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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740 views

1 answer

swift - Custom pin image in annotationView in iOS

I'm trying to change from Swift 1.2 to Swift 2.0 and I'm at the end of the changes. Currently ... annotationView } Thanks in advance, Regards. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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839 views

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swift - Property observers willSet and didSet; Property getters and setters

What is the difference between willSet - didSet, and get - set, when working with this inside a property? From my ... } set (newValue){ } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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swift - UI Test deleting text in text field

In my test I have a text field with a pre-existing text. I want to delete the content and type a new ... this be solved to be more universal? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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swift - Draw iOS 7-style squircle programmatically

I'm trying to find a way to draw a iOS 7-style icon 'squircle' shape programmatically, using core graphics ... entirely exact with the formula. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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swift - Is there a method to blur a background in SwiftUI?

I'm looking to blur a view's background but don't want to have to break out into UIKit to accomplish it ( ... or looking into it the wrong way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

1 answer

swift - iOS 9 - "attempt to delete and reload the same index path"

This is an error: CoreData: error: Serious application error. An exception was caught from the delegate of ... .performFetch() } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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887 views

1 answer

swift - How can I export DAE files for use in Scene Kit without seeing "untitled-animations"?

I am trying to load animations created in Cheetah 3D and Blender 3D into Scene Kit, but all I get is a bunch ... that Scene Kit can use them? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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swift - Could not find module for target 'x86_64-apple-ios-simulator'

I have my custom framework and it works properly in XCode 10. I rebuild it in XCode 11 beta 3, then ... a few methods into main project. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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740 views

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swift - Change color of png in buttons - ios

I've got a set of icons that I've created that are transparent white PNGs: And what I'd like to do is be ... be the best way to achieve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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776 views

1 answer

swift - UIWindow not showing over content in iOS 13

I am upgrading my app to use the new UIScene patterns as defined in iOS 13, however a critical part of ... adding the strong reference first. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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778 views

1 answer

swift - Change the color of iOS Navigation Bar

I'm trying to change the color of my navigator bar but I found that it's only impossible if the ... :") navigationItem.rightBarButtonItem = Home See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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881 views

1 answer

swift - Closure use of non-escaping parameter may allow it to escape

I have a protocol: enum DataFetchResult { case success(data: Data) case failure } protocol DataServiceType { func ... to the underlying cause? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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722 views

1 answer

swift - Draw line animated

I want to have a line in the center of the screen and animate it like a snake This is step by step animation I want to make How can I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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