Recent questions tagged IOS

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ios - How to delete a child from Firebase (Swift)

I've been following a tutorial on making an instragram-esque app, and I'm having a lot of trouble figuring ... posts[indexPath.row] comes from. 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 - iPhone OpenGL ES 2.0 - Pixel Perfect Textures

How can I get my textures to align with the screen pixels for pixel perfect graphics in OpenGL ES 2.0? This is ... help on this would be great! 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 - obj-c AFNetworking 2.0 POST request does not work

Hi want to send some data (strings and a file) to a server, by using AFNetworking 2.0. Somehow the data ... :NO completion:nil]; } @end 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 - Swift: Custom camera save modified metadata with image

I am trying to save SOME of the metadata from an image sample buffer along with the image. I need to: Rotate ... .jpg", atomically: 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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364 views

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ios - Can I archive with a Developer certificate, then re-sign it during submission with a Distribution certificate?

From what I understand, Xcode can re-sign an .ipa from an archive during the App store submission process, making it ... a valid thing to do... See Question&Answers more detail:os...

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

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697 views

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ios - Alphabetical sections in table table view in swift

I have a list of names sorted alphabetically, and now I want display these names in a table view. I'm ... how to proceed would be 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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ios - UIImageJPEGRepresentation has been replaced by instance method UIImage.jpegData(compressionQuality:)

I've tried to upload a photo to Firebase but it's giving me this error. It was working before Xcode 10. I'm ... failed completion(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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ios - Xcode/Swift 'filename used twice' build error

I'm new to Swift and am struggling with an error after I have (possibly) correctly installed a 3rd party framework ... it in the Pods? 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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ios - How do I use CoreAudio's AudioConverter to encode AAC in real-time?

All the sample code I can find that uses AudioConverterRef focuses on use cases where I have all the data up-front ... or is there a better way? 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 - Split UIImage in half?

How would I go about splitting a UIImage In half(down the middle) so it would make two images? See Question&Answers more detail:os...

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

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645 views

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ios - Dragging SCNNode in ARKit Using SceneKit

I have a simple SCNNode in ARKit and I am trying to drag it wherever I moved my finger on the phone. Here ... drag is very slow and not smooth. See Question&Answers more detail:os...

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

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675 views

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ios - CALayer - CABasicAnimation not scaling around center/anchorPoint

Using the code below I've been trying to get my CALayer to scale around its center - but it scales by ... :animation forKey:@"zoom"]; 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

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ios - Reused cells in a UICollectionView show multiple UIImageViews when they should only show one

Im having a problem with my UICollectionView. Initially it displays fine, showing a grid of cells, each cell ... the cells from corrupting? See Question&Answers more detail:os...

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

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285 views

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ios - RestKit and saving to CoreData as NSManagedObject

I'm using RestKit and i want to parse and save elements to core data. I have two json files: First ... , retain) NSManagedObject *category; @end See Question&Answers more detail:os...

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

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434 views

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ios - How to take screenshot of portion of UIView?

I want the user to go on my app and take a screenshot of the app after pressing a button programmatically in Swift. ... a pic of the web view. See Question&Answers more detail:os...

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

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184 views

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ios - UITableView Using Swift

My TapCell1.swift This is Custom UITableViewCell View import UIKit class TapCell1: UITableViewCell { @IBOutlet var ... My File Download Link See Question&Answers more detail:os...

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

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379 views

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ios - Mobile Safari/ iPhone Mail.app HTML design issues: prevent autolinking and styling auto-links (dates, addresses, etc.)

i am trying to design an HTML e-mail that should also look good when it is read on mobile devices. ... be any information out there whatsoever. See Question&Answers more detail:os...

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

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438 views

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ios - Installed App from TestFlight crashes due to alleged UISearchDisplayController

I implemented Dark Mode with the current beta version of Xcode in a relatively old?app. I uploaded these to ... a solution for this 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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241 views

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ios - How do set a width and height of an Image in Swift

New to Swift and iOS programming in general. I couldn't figure out how to set a width and height of an ... (named: "background.png") 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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441 views

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ios - Leaving inputAccessoryView visible after keyboard is dismissed

What I'm trying to do is to create something similar to the "find on page" search function in Safari on ... when the keyboard gets dismissed. 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

1 answer

ios - Find first element matching condition in Swift array (e.g. EKSource)

I would like to find the first EKSource of type EKSourceType.Local with a "single"-line expression in Swift. ... a generic version of find)? 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

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ios - Generics in Swift - "Generic parameter 'T' could not be inferred

I'd like to return a UIViewController conforming to MyProtocol from a method, so I'm using the method signature ... should be necessary, right? See Question&Answers more detail:os...

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

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668 views

1 answer

ios - cellForItemAtIndexPath not called but numberOfItemsInSection does

This could be a duplicate post but I haven't found the solution. I'm setting my UICollectionView as: UINib *nib ... have a clue? 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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312 views

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ios - How can I make Cmake use specific compiler and flags when final compilation stage instead of detection?

I'm trying to cross-compiling from Mac OS X to iOS. It was easy using clang to cross-compile a source to ... can I make it use the parameters? See Question&Answers more detail:os...

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

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648 views

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ios - UIView.animateWithDuration swift loop animation

In ViewController.Swift I managed to make a box animate from one point to another. I thought it would be easy to loop ... , height: 100) }) }) See Question&Answers more detail:os...

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

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483 views

1 answer

ios - How to get image file size in Swift?

I am using UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIPopoverControllerDelegate these delegates for choosing image ... ? 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 - Linker errors when trying to install new Google Analytics 3.0 Beta

I believe just today Google released a new update to their iOS Analytics frame work (version 3.0). When I ... not getting the needed results. See Question&Answers more detail:os...

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

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269 views

1 answer

ios - Run iPhone/iPad Simulator for Continuous Integration

I am attempting to run the iOS simulator from the command line. I have found the location where the ... iOS applications during CI Builds See Question&Answers more detail:os...

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

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