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Recent questions tagged swift3

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swift3 - preferredStatusBarStyle removed in Swift 3?

so I recently just updated to Xcode 8 and I just got this error for the following code. The error is ... would really appreciate help, 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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291 views

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swift3 - How to cache images using URLSession in Swift

I would like to enhance the code below to cache images and only download them if they haven't been cached ... resume() return downloadTask } } See Question&Answers more detail:os...

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

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561 views

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swift3 - DispatchGroup: check how many "entered"

I'm using Swift 3 DispatchGroup to wait until multiple async operations are finished (according to this answer ... or something like that? See Question&Answers more detail:os...

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

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swift3 - Swift 3 Add custom annotation pin to MKMapSnapShotter snapshot

I'm learning Swift 3 on my own, and my current learning project involves allowing the user to snap a ... would appreciate any insights. 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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381 views

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swift3 - swift 3 error : Argument labels '(_:)' do not match any available overloads

Just converted a project to Swift 3 and cant figure out the following error. public func currencyString(_ decimals ... to change to resolve 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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463 views

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swift3 - Check internet connection (iOS 10)

For iOS 9 I was using Reachability public class to check wether the device is connected to the internet or not ... && !needsConnection) } } See Question&Answers more detail:os...

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

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312 views

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swift3 - Different Launch Screen Image or Background Image Sizes for iOS devices

I read some of those website links that explain about exporting different image sizes for iOS device. But I don't ... reading till the end. :) See Question&Answers more detail:os...

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

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479 views

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swift3 - How do you override layerClass in swift 3?

I'm trying to override the method layerClass() in swift 3 but I'm getting the error Method does not ... AnyClass { return CAGradientLayer.self } See Question&Answers more detail:os...

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

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428 views

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swift3 - cornerRadius stopped working in Swift 2.3 / iOS 10 / Xcode 8

I have a cornerRadius set on a UIView and a UIImageView inside the same UIView. I am calculating ... .layer.masksToBounds = true See Question&Answers more detail:os...

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

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347 views

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swift3 - Objective-C Bridging Header not getting created with Xcode 8

I am trying to add objective-c libraries to my Swift 3 project (Xcode 8 IDE). But objective c interface ... Any help would be appreciated :) See Question&Answers more detail:os...

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

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344 views

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swift3 - Swift 3: Display Image from URL

In Swift 3, I am trying to capture an image from the internet, and have these lines of code: var catPictureURL ... What am I doing wrong here? See Question&Answers more detail:os...

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

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270 views

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swift3 - Swift Framework build fails for device but not for simulator

Any ideas why a build would succeed for simulator but not a device? I created a Cocoa framework and was ... Use of unresolved identifier 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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343 views

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swift3 - In Swift, what's the difference between calling UINavigationController() vs UINavigationController.init()?

In Swift, what's the difference between calling UINavigation() vs UINavigation.init()? They both seem ... instance of UINavigationController. See Question&Answers more detail:os...

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

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268 views

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swift3 - Unable to use indices.contains() in a Collection extension in Swift 3

I wrote following extension in Swift 2.3: extension CollectionType { /// Returns the element at the specified ... with migrating it, please? See Question&Answers more detail:os...

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

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476 views

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swift3 - Different cornerRadius for each corner Swift 3 - iOS

I want to set different corner radius for a view in Swift -3 , I am able to set the radius for the each ... -right: 3 Radius bottom-left: 18 See Question&Answers more detail:os...

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

0 votes

357 views

1 answer

swift3 - Why do closures require an explicit `self` when they're all non-escaping by default in Swift 3?

I've noticed that in Swift 2.2, closures marked as non-escaping with @noescape do not require an explicit ... capture semantics explicit } } } See Question&Answers more detail:os...

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

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446 views

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swift3 - How do you write a completion handler in Swift 3?

I was wondering how to make a completion handler for a function I'm creating in Swift 3. This is how I ... best approach that works right now. See Question&Answers more detail:os...

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

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463 views

1 answer

swift3 - Position a SceneKit object in front of SCNCamera's current orientation

I would like to create a new SceneKit node when the user taps the screen, and have it appear directly in front ... this one, but no answers. See Question&Answers more detail:os...

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

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727 views

1 answer

swift3 - Why is 'nil' not compatible with 'UnsafePointer<CGAffineTransform>' in Swift 3?

Trying to create a CGMutablePath() as such: let path = CGMutablePath() CGPathMoveToPoint(path, nil, 30, 0) but ... seem to make a difference.) See Question&Answers more detail:os...

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

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367 views

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swift3 - print without newline in swift

In swift 2.0, print() automatically adds a newline character. In swift 1.2, println() and print() ... function that does not append newlines. See Question&Answers more detail:os...

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

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330 views

1 answer

swift3 - Take a photo and save to photo library in Swift

I have a button "take a photo" and when pressed, it opens the camera, you take a photo and when you select " ... code I have to open the camera: See Question&Answers more detail:os...

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

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405 views

1 answer

swift3 - Trigger notification weekly Swift 3

I am trying to make a schedule, in which I need to remember all the weeks I have class such as Monday ... , content: content, trigger: trigger) See Question&Answers more detail:os...

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

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555 views

1 answer

swift3 - Alamofire 4 upload with parameters

I'm doing the below to upload a PNG file with parameters: Alamofire.upload( multipartFormData: { multipartFormData in ... in Alamofire 4.0.1. See Question&Answers more detail:os...

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

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452 views

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swift3 - Add Local Notification in iOS 10 - Swift 3

So I been trying to add a notification to the new UNUserNotificationCenter, but I don't seem to get it. My ... in the background did the trick. See Question&Answers more detail:os...

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

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491 views

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swift3 - How to get time (hour, minute, second) in Swift 3 using NSDate?

How can you determine the hour, minute and second from NSDate class in Swift 3? In Swift 2: let date = ... hour = components.hour Swift 3? See Question&Answers more detail:os...

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

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