Recent questions tagged iOS

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ios - Passing parameters to a JSON web service in Objective C

I'm trying to call a webservice method and pass a parameter to it. Here is my webservice methods: [WebMethod] ... Thank you for your help! Teddy 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 - 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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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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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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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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447 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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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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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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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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572 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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478 views

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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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304 views

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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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435 views

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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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273 views

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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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407 views

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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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270 views

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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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423 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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296 views

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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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404 views

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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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386 views

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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)

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430 views

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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)

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320 views

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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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561 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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314 views

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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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404 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)

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383 views

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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)

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299 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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