Recent questions tagged iOS

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I would like to develop an app when the user can draw lines... but I do not want to draw straight lines ... with this. Best regards, Paul Peelen See Question&Answers more detail:os...

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

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449 views

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ios - WatchKit reloadRootControllersWithNames causing error, with pageController or after push/pop

I have a basic watchkit app that loads a page based navigation of 3 interface controllers. This works well, but ... -multi instance of this bug. See Question&Answers more detail:os...

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

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353 views

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ios - Is there a way to change default font for your application

As I understand all standard controls use system font by default. Also, API [UIFont systemFontOfSize: ] uses system font ... , labels and so on? See Question&Answers more detail:os...

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

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ios - Facebook API - How to cancel Graph Request

I occasionally need to cancel a FaceBook graph request, but there seems to be no cancel or similar method ... request once submitted please? See Question&Answers more detail:os...

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

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488 views

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ios - Unit testing private methods from a category?

I have a category on NSString class that contains a private helper method. It would be handy if I could use ... something here. Any help guys? See Question&Answers more detail:os...

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

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433 views

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ios - Custom "Pressed" UIBarButtonItem Backgrounds

I'm trying to set a custom pressed image for my UIBarButtonItem but nothing seems to be ... barMetrics:UIBarMetricsDefault]; See Question&Answers more detail:os...

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

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475 views

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ios - Firebase observe with type .childAdded retrieves all my information every time. Please assist

According to Firebase docs: ChildAdded is triggered once for each existing child and then again every time a new ... exists in core data :/ See Question&Answers more detail:os...

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

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430 views

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ios - Unzip files in swift

How to go about unzipping a file in swift? In Objective-C, I used SSZipArchive and I loved ... zipPath toDestination:self.globalFileStrucure]; See Question&Answers more detail:os...

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

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543 views

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ios - How to take UIImage of AVCaptureVideoPreviewLayer instead of AVCapturePhotoOutput capture

I want to "stream" the preview layer to my server, however, I only want specific frames to be sent. Basically, ... . Help a brother out, 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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384 views

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ios - React native Linking to another app

I am trying to link to another app from my react native application (google maps for example). I required the ... the correct one is called? See Question&Answers more detail:os...

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

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455 views

1 answer

ios - POST data to a PHP method from Swift

I'm trying to post some info to my PHP file from Swift. My php file is executed, but the posted variables ... blank too. No errors are shown. See Question&Answers more detail:os...

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

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370 views

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ios - Matching subview's width to it's superview using autolayout

Goal: Have a UIWebView be the same width as it's superview, which is a UIScrollView, using autolayout ... for displaying an HTML table. See Question&Answers more detail:os...

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

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364 views

1 answer

ios - How to pass data between UIViewControllers with protocols/delegates

In the code below I have a ViewController("SenderViewController"), which passes a message to the main ViewController when ... } } 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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902 views

1 answer

ios - Change pin image on MKMapView in Swift

I am trying to change pin image on the MKMapView in Swift, but unfortunately it don't work. Any Idea what ... and used on other places. See Question&Answers more detail:os...

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

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457 views

1 answer

ios - Longpress and list scrolling

Using SwiftUI (latest XCode and testing on IOS 13.3) I'm trying to implement a long press gesture on items in ... no matter where I press down. See Question&Answers more detail:os...

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

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424 views

1 answer

ios - xcode 7.2 Could not build Objective-C module

I have just updated my Xcode to version 7.2. Now I try to build a framework from command line ... ABC -configuration Debug -sdk iphonesimulator See Question&Answers more detail:os...

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

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295 views

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ios - Should I listen for reachability updates in each UIViewController?

I see a lot of Reachability examples where people only display a message when reachability status changes. But recently, ... I can provide it. See Question&Answers more detail:os...

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

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384 views

1 answer

ios - Access a UICollectionView's parent UIViewController

My question is fairly straightforward. I have a UIViewController containing a UICollectionView. In ... UICollectionView implementation. See Question&Answers more detail:os...

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

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437 views

1 answer

ios - iPhone - Detecting SIM card availability

I am using the answer in this topic. iPhone - how to determine carrier of the device (AT&T, Verizon, etc? ... name although no sim is installed. See Question&Answers more detail:os...

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

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425 views

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ios - Use NSManagedObject class without initWithEntity:?

My problem is similar to: Problem creating NSManagedObject derived class I have setup a NSManagedObject in Core Data and ... a table? 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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1.5k views

1 answer

ios - SwiftUI Dismiss Multiple Modal Sheets

I am using .sheet(isPresented: self.$showModal) in my root view to present a modal. Within the modal, ... NavigationView within a modal sheet? See Question&Answers more detail:os...

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

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471 views

1 answer

ios - iPhone UIViewController goes under status bar

I have a UIView and a UIController view. My is standard a 320x460 view. In applicationDidFinishLaunching I do: [ ... am I doing smth 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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293 views

1 answer

ios - URLSessionDidFinishEventsForBackgroundURLSession Not Calling- Objective-C

NSURLSession Delegate method URLSessionDidFinishEventsForBackgroundURLSession is not Calling ? I already enabled the Background Modes ... only. See Question&Answers more detail:os...

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

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427 views

1 answer

ios - Azure Notification Hub registrations disappear when sending a notification

Recently our Azure Notification Hub became a very mysterious entity. When Apple devices register we can see them ... expired. 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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1.0k views

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ios - Screen Background Color With ScrollView And Navigation Bar SwiftUI

Im trying to have a colored background while using a scrollview with SwiftUI but this causes the navigation title to no ... = .orange // } } See Question&Answers more detail:os...

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

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616 views

1 answer

ios - (Swift) PrepareForSegue: fatal error: unexpectedly found nil while unwrapping an Optional value

DetailViewController: @IBOutlet var selectedBundesland: UILabel! TableViewController: override func prepareForSegue(segue: ... 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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418 views

1 answer

ios - unable to use cocoapods after updating

I have updates Ruby , Gems and Cocoapods on my mac OSX 10.9.5, after the update I am unable to ... update. any help is 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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581 views

1 answer

ios - AVAudioPlayer not playing audio in Swift

I have this code in a very simple, single view Swift application in my ViewController: var audioPlayer = AVAudioPlayer ... is not in silent. See Question&Answers more detail:os...

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

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