Recent questions tagged iOS

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ios - Achieve button click in UICollectionView

Is there a way I can get the button click event from a button inside a UICollectionViewCell? I used a nib to ... action? What am I doing 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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367 views

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ios - How to test Apple Push Notifications Feedback Service?

What I did as a test is following: I made example app where I enabled push notifications and implemented ... any kind of answer. Cheers See Question&Answers more detail:os...

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

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476 views

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ios - Named UIPasteboard between apps?

Is it possible to use a named UIPasteboard (ie, not the global one) to transfer data between two apps? ... documented? Thanks for any insight! 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

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ios - Xcode 11.0 Beta 4 Builds and Runs, but can't Archive

My Swift project builds and runs normally, but fails every attempt to Archive with errors, caused by the ... and indexing this 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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486 views

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ios - Problems with getting text from UIAlertView textfield

In my application I want a alert with a textfield. After clicking on "Done" I want to save the textfield ... button and the "Cancel" button. See Question&Answers more detail:os...

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

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277 views

1 answer

ios - CVOpenGLESTextureCacheCreateTextureFromImage returns error 6683

I am currently attempting to draw an image in openGL using YUV420 format (bi-planar). I receive raw data, and ... more luck for my situation. See Question&Answers more detail:os...

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

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347 views

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ios - "hidden" vs #keyPath(UIView.isHidden)

KVO observer with #keyPath(UIView.isHidden) does not work, but "hidden" works. Very strange. Is it bug or feature? child. ... { 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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348 views

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ios - Phonegap 3 white flash after splash

I know this has been asked (and answered) several times (Phonegap showing white screen after the splash ... Anybody have 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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ios - Pixel formats, CVPixelBufferRefs and glReadPixels

I'm using glReadPixels to read data into a CVPixelBufferRef. I use the CVPixelBufferRef as the input into an ... be a performance hit. See Question&Answers more detail:os...

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

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631 views

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ios - How to implement UDP client and send data in Swift on iPhone?

I want to develop UDP client and send data in Swift. I have reference the following link: Swift: Receive UDP ... send data in Swift on iPhone? See Question&Answers more detail:os...

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

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579 views

1 answer

ios - How to access NSData/NSURL of slow motion videos using PhotoKit

Working with new Photo framework, I can access the NSData of PHAssets using requestImageDataForAsset. I can also access ... of this JPG preview? See Question&Answers more detail:os...

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

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394 views

1 answer

ios - Custom Clear Button

I want to create custom clear button on UITextField, that is to use rightView and put image there, the problem ... any ideas to workaround 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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439 views

1 answer

ios - Detecting Tap & Hold in UITableView cells

How do we detect a tap & hold on a UITableViewCell? See Question&Answers more detail:os...

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

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253 views

1 answer

ios - Firebase logging garbage into console. Xcode - 8 (Swift3)

This below is the code I used. Can anyone help me to solve this problem? AppDelegate.swift import UIKit ... tc_nwconn=0x7fde33e0a120 (lldb) c See Question&Answers more detail:os...

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

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480 views

1 answer

ios - WKWebView evaluateJavaScript not returning html

I am trying to parse the html returned from a WKWebView load() with evaluateJavaScript but it never prints anything. ... print("didFinish") } } See Question&Answers more detail:os...

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

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264 views

1 answer

ios - objc_setAssociatedObject function error in 64bit mode not in 32bit

I am using a neat table view controller called SKSTableView in my project which allows each table row to ... //github.com/sakkaras/SKSTableView See Question&Answers more detail:os...

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

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432 views

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ios - Swift 3: Load photos from Photos/Camera Roll without using UIImagePickerController

This question has been asked before but there were no answers for Swift 3. I am looking for ... these photos without UIImagePickerController? See Question&Answers more detail:os...

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

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339 views

1 answer

ios - checking reachability against a specific page in a URL

After I have read the answer for this question I have found that using reachabilityWithHostName does not work with a ... so much 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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346 views

1 answer

ios - How did Whatsapp app removed app's compatibility for iPad?

I have noticed using different applications that, even when you remove the iPad compatibility from xcode (see picture ... below): 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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554 views

1 answer

ios - Swift call class function from corresponding subclass in superclass function

I would like to implement init(coder aDecoder: NSCoder!) in a superclass, and use it in all subclasses by ... function dummyDict() at runtime ? See Question&Answers more detail:os...

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

0 votes

358 views

1 answer

ios - Make a UIImage from a MKMapView

I want to create a UIImage from a MKMapView. My map is correctly displayed in the view, however the UIImage ... make a UIImage using MapKit? See Question&Answers more detail:os...

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

0 votes

389 views

1 answer

ios - swift : Failed to communicate with Interface Builder

I've just opened existing project in xcode 6 beta. But it's crash with following error message. dyld: problem ... xib to run on xcode beta? 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

1 answer

ios - How do I blend two textures with different co-ordinates in OpenGL ES 2.0 on iPhone?

I can blend two textures with different blending modes in the fragment shader when both the textures covers the same ... (pixelTop, pixelBot); } See Question&Answers more detail:os...

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

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363 views

1 answer

ios - Querying Firebase with Swift 3.0

I am trying to get all the entries where createdAt is equal to Today, but it returns nothing. What am I doing ... as! FIRDataSnapshot).key) } }) 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 - Auto Layout constraint change does not animate

I was learning the auto layout with animations from the tutorial http://weblog.invasivecode.com/post/ ... UIView Auto Layout Animation See Question&Answers more detail:os...

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

0 votes

563 views

1 answer

ios - Why the huge difference between XCode & instruments memory usage, and is it ok?

I'm using XCode 7.0 with iOS 9.0 SDK & ARC, all profiling/testing done on an iPhone 5S with iOS 9. ... ... XCODE MEMORY USAGE 236 MB INSTRUMENTS See Question&Answers more detail:os...

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

0 votes

556 views

1 answer

ios - Face ID evaluation process not working properly

I'm trying to get if Face ID or Touch ID succeeded in the function below func authenticate() -> Bool{ let ... person was watching, 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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619 views

1 answer

ios - CallKit:No sound when I use WebRTC

Our project uses WebRTC for VOIP calls and it works fine before accessing the CallKit framework. But when I tried ... me, thank you very much! See Question&Answers more detail:os...

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

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