Recent questions tagged Swift

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swift - UITabBar items jumping on back navigation on iOS 12.1

I have an iOS app with UITabBarController on a master screen, navigating to a detail screen hiding the ... of workaround for 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 - How do i return coordinates after forward geocoding?

I am trying to see whether the user is within a certain distance of an address. I have successfully managed to get the ... { print("yay") } } } 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 - How flatMap API contract transforms Optional input to Non Optional result?

This is the contract of flatMap in Swift 3.0.2 public struct Array<Element> : RandomAccessCollection, ... part from the expression? 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 - Firebase getting data in order

I am using Firebase and I have had no problems getting data in alphabetical order until recently. I never used queries, I ... pass") } } } }) 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 - Inout parameter in async callback does not work as expected

I'm trying to insert functions with inout parameter to append data received from async callback to an outside array. ... task.resume() } 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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swift - Sheet inside ForEach doesn't loop over items SwiftUI

I have an issue using a sheet inside a ForEach. Basically I have a List that shows many items in my array and an image ... [movie]) } } } } } } 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 - How can I interleave two arrays?

If I have two arrays e.g let one = [1,3,5] let two = [2,4,6] I would like to merge/interleave the ... T]() //What goes here return mergedArray } 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 - iOS 13.1 Crash in AVAudio Player

My App is crashing on iOS 13.1 when i trace a issue then found App is crashing because of AVAudioPlayer. ... try to initialise with URL. 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 - Value of type 'StorageMetadata' has no member 'downloadURL'

Hey I need help with this coding, i'm not sure what has happened. It was working the other day. The error ... / failed completion(nil) } } } 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 - xcode 8 beta 3: Expected ',' joining parts of a multi-clause condition

Getting a new warning in xcode 8 beta 3. What is wrong with this syntax, or is there a bug in xcode? ... errorValue.code == ErrorNotExist { } 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 - How to pass multiple enum values as a function parameter

How would I do the following - passing two NSStringDrawing options as a function parameter in swift: CGRect ... :options context:nil]; 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 - Get associated value from enumeration without switch/case

I've got an enumeration with a few different cases which are different types, e.g. enum X { case AsInt ... instead of polluting the scope. 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 - Constant unassigned optional will not be nil by default

My understanding so far : If you define an optional variable without assign any values, the compiler will ... for let declared optionals? 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 - Is this response from the compiler valid?

The following code invokes an error. I could not find any information on this is in the reference. The lack of ... ://itun.es/us/jEUH0.l 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 - It's possible to change push notification message before display on device from iOS side?

Display my push notification message is "Message from: +919687335565" attached screenshot : I just want to fetch ... like attached screenshot : 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 - Filter non-digits from string

Using only swift code I cant figure out how to take "(555) 555-5555" and return only the numeric values ... spaces before and after the data. 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 - Right way of determining internet speed in iOS 8

I am following the below code which I copied and converted from a stack overflow question. I am getting ... Signal Strength in iOS Reachability 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 - Prevent dismissal of UIAlertController

I am adding a UITextField to a UIAlertController, which appears as an AlertView. Before dismissing the UIAlertController, ... luck :/ 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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swift - How do I make a exact duplicate copy of an array?

How would I make an exact duplicate of an array? I am having hard time finding information about ... duplicateArray = originalArray.copy() 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 - Custom back button for NavigationView's navigation bar in SwiftUI

I want to add a custom navigation button that will look somewhat like this: Now, I've written a ... altogether using .navigationBarHidden(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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swift - Dynamically hiding view in SwiftUI

I'm trying to conditionally hide a DatePicker in SwiftUI. However, I'm having any issue with mismatched ... original, unmodified date picker. 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 - iOS 11 disable password autofill accessory view option?

As of now I would like to opt out of the new option iOS 11 gives, that is to suggest passwords in the app. When ... is the same as pre iOS 11? 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 - Location Services not working in iOS 11

I just rebuilt my app with the iOS 11 SDK in an attempt to remove the blue banner that is now always ... 10 - Has anybody heard anything? 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 - navigation bar rightbaritem image-button bug iOS 11

This code works ok in ios10. i get my label and an image button which is the user photo ... .NavigationItem.rightBarButtonItem = labelItem } 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 - how to set cornerRadius for only bottom-left,bottom-right and top-left corner textview?

How to set corner radius only only bottom-left,bottom-right and top-left corner textview? let rectShape = CAShapeLayer( ... . I dont know why. See Question&Answers more detail:os...

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

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1.8k views

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swift - How to update the constant height constraint of a UIView programmatically?

I have a UIView and I set the constraints using Xcode Interface Builder. Now I need to update that UIView instance's ... 't know how to use 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 - What is a good example to differentiate between fileprivate and private in Swift3

This article has been helpful in understanding the new access specifiers in Swift 3. It also gives some examples ... the same as using private? 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 - Alamofire with -d

I need to make request like this Postman one, but in Alamofire curl -X DELETE http://someUrl -H 'authorization: ... from cUrl - -d id=someId See Question&Answers more detail:os...

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

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