Recent questions tagged swift

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swift - App runs perfectly on simulators but not on physical devices [on iOS 13.3.1]

The app runs perfectly on every simulator but when I try to run it on a physical device , it ... project restarting Mac reinstalling Xcode 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 - Integrate iAd pre-roll video integration in my app?

I want to integrate an iAd Pre-Roll video Ad to my application. When I run this application, it gives ... .preparePrerollAds() return true } 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 - HTTP load failed (kCFStreamErrorDomainSSL, -9806 ( IOS9)

I am getting the NSURLSession/NSURLConnection HTTP load failed on iOS 9 while running app on Simulator. Here is how ... info.plist Thanks a lot! 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 ForEach based on State int

I am storing a Int value as State in my View. When I press a button the Int increase by one. This is ... call that loop again after changing. 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 - Create an outlet in storyboard to an inherited property

I'd like to create a basic view controller class BasicController with two subclasses SubclassController and ... to that outlet? 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 - Reality Composer - Custom Collision Between Entities of Different Scenes

I'm pretty new to RealityKit and ARKit. I have two scenes in Reality Composer, one with a book image anchor and ... started") } return arView } 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 - Physics detecting collision multiple times

When the ball collides with the cup, the score should increase by 1. However it currently increases by 1, 3 ... it should only happen once. 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 to limit flatMap concurrency in Combine still having all source events processed?

If I specify the maxPublishers parameter then source events after first maxPublishers events won't be flat mapped. While I ... (result)) } } } 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 should you handle closure arguments for UIAlertAction

I have been trying to create a UIAlertAtion which also has a handler. I read the answers from this question and ... but still I'm confused. 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 request with parameters

Which way is recomed in swift 3 for GET with parameters ? Example : https://my-side.com/data?token=AS7F87SAD84889AD/ Thanks in advance ! 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 - What is the type of the logical operators?

I want to use them as a parameter to a method of my Region struct: private func combineWith(region: RegionProtocol, ... know how you found out. 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 - iOS 9 Orientation Auto-Rotation Animation Not Working, But Always on Main Thread

iOS 9.0 (13A340) Xcode 7.0 (7A220) OS X 10.10.5 (14F27) I have a situation where if I rotate the ... issue with this project alone) Thank you. 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 - Would mutating an ArraySlice instantiate a new array instance?

var absences = [0, 2, 0, 4, 0, 3, 1, 0] let midpoint = absences.count / 2 var firstHalf = ... mutating the array slice? Thanks in advance. 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 - NSURLErrorDomain with code=-1100

I was trying to download a picture to my app from The request failed with the error NSURLErrorDomain and the code is ... (data: imageData!); }) 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 - Split large Array in Array of two elements

I have large list of objects and I need to split them in a group of two elements for UI propouse. Example: [0 ... costly) if the array is huge. 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 - Cannot invoke 'filter' with an argument list of type '((_) -> _)'

Sounds ridiculous, but I'm unable to fix this piece of code: self.runningScripts.filter({ $0 != ... without problems. Any suggestions? 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 - Firebase Unique Value

Having the following structure in Firebase: -events -Firebase Push ID for Event 1 **-key: "DF2342"** -name: ... for me to accomplish this task? 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 - NSData contentsOfURL constructor returns nil

I'm trying to access an API I made in PHP. It works fine in browser, but I can't get this code to ... that either. Might be a related issue. 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 - Adding items to Array as a Dictionary Value

I'm trying to figure out the best way in Swift to add values to an Array that is a Value in a ... Any insight would be much appreciated! 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 - type 'Any' has no subscript members

let employerName = snapshot.value! ["employerName"] as! String let employerImage = snapshot.value! ["employerImage" ... any help is appreciated. See Question&Answers more detail:os...

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

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1.7k views

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swift - Refresh Token Mechanism with Combine framework iOS

Followed refresh token strategy from this gist - https://gist.github.com/saroar/ca78de9dc798cdbaaa47791380062596 but ... be greatly appreciated. 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 - Appending tuples to an array of tuples

My class declares an array var laps: (start: NSDate!, end: NSDate!)[] = [] When a tuple is added to ... argument for parameter 'end' in call. 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 - Unable to create instance variable and class variable of the same name

The following code does not compile: class object { class var myVar: String! { return "from class" } ... as functions rather than variables). 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 encode an unmanaged<SecKey> to base64 to send to another server?

I'm trying to use key pair encryption to validate identity between my app and my PHP server. To do this ... a publicKey:SecKey to NSData? See Question&Answers more detail:os...

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

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2.5k views

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swift - Append to array in [String: Any] dictionary structure

Assembling a data payload passed to GRMustache.swift for rendering mustache templates, I'm in a scenario where I ... "] iteratively over time? See Question&Answers more detail:os...

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

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1.7k views

1 answer

swift - How to make cells have a gradient background?

I have inserted a table view on my view controller and I was wondering how can I give the cells in the table ... that can be recreated. } } 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 to pass in parameters into @objc function

I have a cell in a tableView, with a button I want to add an action to. The button will be an email ... it can feed into the delegate function? See Question&Answers more detail:os...

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

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969 views

1 answer

swift - Nothing prints out in the console in command line tool Xcode

Nothing prints out in the console in command line tool Xcode when I run the following code: import Foundation class A ... don't allow to print? See Question&Answers more detail:os...

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

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