Recent questions tagged iOS

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I'm trying to add a customBadge as a subview of a UIButton - this is my code so far - //msg count initiaition ... as to where i'm going 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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ios - how and where do I initialize an global NSMutableArray in Xcode 5

I am trying to initialize a global NSMutableArray that I can add integers to later. I just need to know how and ... needs to be 180 in length. 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 - How can I subclass a UITableView?

I want to subclass a UITableView as I want to create a reusable table view component in my application. The idea ... not the problem. Any ideas? See Question&Answers more detail:os...

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

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956 views

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ios - Swift CoreData: error: Failed to call designated initializer on NSManagedObject class 'NSManagedObject'

I'm using core data to save a category in vc1 and want to add list properties to a list in vc2. My data ... and print the array. What's 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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614 views

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ios - Use of unresolved identifier NSCalendarUnitDay

I just updated Xcode to its 6.3 version. Except all the fixes I have to make regarding as (mainly), I have some ... 's wrong and how to fix 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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802 views

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ios - Live camera is getting stretched while rendering using CIFilter. - Swift 4

I want to apply camera filter while rendering, my code is... func session(_ session: ARSession, didUpdate frame: ... code or project. 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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ios - UnsafeMutablePointer Warning with Swift 5

I had this: let alphaPtr = UnsafeMutablePointer<vImagePixelCount>(mutating: alpha) as UnsafeMutablePointer<vImagePixelCount>? ... around 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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750 views

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ios - how to fetch resolution supported by video .m38u file url in swift

I am currently working on HTTP Live streaming video with AVPlayerViewController / AVPlayer I am playing a video ... subs" video/10000kbit.m3u8 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 - Determine which share extension was used

Since the completionHandler on UIActivityViewController was deprecated in iOS 8, is there any way to determine which share ... used by the user? See Question&Answers more detail:os...

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

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700 views

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ios - How to check if a character is supported by a font

I'm working on an app with a text field. The text wrote in this field will be printed and I have an ... a glyph for all the ASCII characters. 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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ios - get IMEI on iPhone with CoreTelephony?

I have tried the accepted answer of How to get IMEI on iPhone? but I got an empty string. I saw somebody ... how to use this private API? See Question&Answers more detail:os...

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

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598 views

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ios - What's the difference between unwind segues and popping to view controllers?

The app I'm working on will need to implement a workflow to allow users to enter information in a form. ... in the docs that addresses 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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673 views

1 answer

ios - Convert Unicode symbol or its XML/HTML entities into its Unicode number in Swift

Given either a unicode symbol as a String or its XML/HTML entities, how could one generate its Unicode number ... for the unicode number itself. See Question&Answers more detail:os...

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

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764 views

1 answer

ios - How to render a UIView with transparent background on an SCNPlane in ARKit?

My UIView has a UIColor.clear background. I am instantiating the View Controller from a storyboard. When I set ... is rendered on the plane? See Question&Answers more detail:os...

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

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837 views

1 answer

ios - Wrap items in a horizontal UIStackView on multiple lines

I am working on an iOS app which display a UITableView of items. Each row will show a list of tags with ... Any ideas how 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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548 views

1 answer

ios - Application freezes after editing custom UITextField

I have a custom UITextField used for validating for non empty input, correct emails, passwords bigger than x characters ... is a delegate for. See Question&Answers more detail:os...

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

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551 views

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ios - Error when attempting to remove node from parent using fast enumeration

After Upgrading to iOS 8 b3 and Xcode 6 b3 I get an error in the didSimulatePhysics method: [self ... mutated while being enumerated.' See Question&Answers more detail:os...

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

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622 views

1 answer

ios - XCode 8 doesn't show images in storyboard

After updating xcode all images in the storyboard appeared as question marks (as it doesn't find them). I tried ... what might be the problem ? See Question&Answers more detail:os...

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

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650 views

1 answer

ios - TableView Automatic Dimension Tableview Inside Tableview

I have Tableview for showing food orders placed by clients. which contains Horizontal UIStackview. In UIStackView In ... any help or suggestion 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

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ios - Apple Swift: Type Casting Generics

I'm writing some Swift code where I have an array containing a generic type: let _data: Array<T> = T[]( ... in order to take specific action? See Question&Answers more detail:os...

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

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592 views

1 answer

ios - Live Updates with CMPedometer (CoreMotion)

I've found very limited resources on this topic (CMPedometer). I was wondering if anyone here has managed to get ... as the user takes a step? See Question&Answers more detail:os...

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

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594 views

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ios - Merge Swift Array with same superclass

I'm trying to find the best way to merge Swift arrays, that are not of same type, but they have same superclass. I've ... ), C(), C() ] 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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446 views

1 answer

ios - MKMapView autorelease not calling dealloc after UIViewController is popped

I have the following code in class A: UIViewController *vc = [self viewControllerForItem:item]; where the ... self.rotationAnimation = nil; See Question&Answers more detail:os...

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

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598 views

1 answer

ios - Using firebase with WatchKit

I am attempting to use the firebase database in my watchKit app. I have developed this feature on my iPhone ... firebase inside a watch app? See Question&Answers more detail:os...

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

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633 views

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ios - SKLightNode performance issues

I've been experimenting with SKLightNode in SpriteKit (new in iOS8) and, even in a really simple test case, ... anything changes, just in case. See Question&Answers more detail:os...

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

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696 views

1 answer

ios - UIImagePickerController really slow when calling alloc init

I have a view controller that is presented on pressing on one of the tabs in a tabBarController. ... calling viewWillAppear or viewDidAppear. See Question&Answers more detail:os...

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

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558 views

1 answer

ios - How to support various iphone screen sizes as of 2014?

I'm almost done building my first iPhone app and am trying to add a background image, and am finding ... must be understanding this incorrectly. See Question&Answers more detail:os...

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

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612 views

1 answer

ios - Why is an Array an AnyObject in Swift?

I'm having trouble understanding the limitations of AnyObject. You can see from the header that Array is a struct ... really a struct after all? See Question&Answers more detail:os...

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

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