Recent questions tagged ios

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ios - When can I activate/deactivate layout constraints?

I've set up multiple sets of constraints in IB, and I'd like to programmatically toggle between them depending on some state. There's a ... it possible to activate/deactivate constraints from viewDidLoad? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

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ios - How to check internet connection in alamofire?

I am using below code for making HTTP request in server.Now I want to know whether it is connected to internet or not. Below is my code let request ... 3") return } self.handleSuccess(JSON(result)) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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300 views

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ios - How to write regular expressions in Objective C (NSRegularExpression)?

I have this regex working when I test it in PHP but it doesn't work in Objective C: (?:www.)?((?!-)[a-zA-Z0-9-]{2,63} ... characters long containing only letters and numbers) Hope this explanation helps. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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769 views

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ios - How to change the tint color of the clear button on a UITextField

I have an auto-generated clear button on my UITextfield, with the default blue tint color. I cannot change the tint color to white. I have tried ... clear button tint color without using a custom image? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

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ios - Auto-layout: What creates constraints named UIView-Encapsulated-Layout-Width & Height?

My layout constraints are fine in Interface Builder but an exception occurs at runtime thanks to some part of the framework applying fixed height and width ... .height == 0.28125*UIView:0xbf4a3c0.width> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

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ios - Why push notifications is not working on testflight?

I have tested push notifications as a developer account and it worked, But when i tried to put it on TestFlight for the testers to test it, it ... of certificate that i need to generate for TestFlight? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - How to disable UITextField editing but still accept touch?

I'm making a UITextField that has a UIPickerView as inputView. Its all good, except that I can edit by copy, paste, cut and select text, and I don't want ... don't show up. What can I do to achieve it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - how to open an URL in Swift3

openURL has been deprecated in Swift3. Can anyone provide some examples of how the replacement openURL:options:completionHandler: works when trying to open an url? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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205 views

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ios - UICollectionView Decoration View

Has anyone implemented a decoration view for the iOS 6 UICollectionView? It's impossible to find any tutorial on implementing a decoration view on the web. ... . This is driving me nuts... Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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337 views

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ios - How does cellForRowAtIndexPath work?

I HAVE READ apple documentation and it's not understandable for such a beginner in Objective-C as me. I'm trying to implement multicolumn UITableView following ... , not UITableView. What am i gonna do? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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455 views

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ios - Xcode 8 "the aps-environment entitlement is missing from the app's signature" on submit

I've got an app that we've submitted dozends of versions to in the last 6 months and we do use APNS. I got the following email from Apple after upgrading ... in the email, so that's not a good sign. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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256 views

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ios - how to disable rotation in React Native?

I would like to support only portrait view. How can I make a React Native app not to autorotate? I tried searching documentation and Github issues, but I didn't find anything helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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377 views

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ios - Change string color with NSAttributedString?

I have a slider for a survey that display the following strings based on the value of the slider: "Very Bad, Bad, Okay, Good, Very Good". ... t understand how to use NSAttributedString to get this done. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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305 views

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ios - iPhone is not available. Please reconnect the device

I'm on iOS 13.5 and using Xcode 11.4 to build on to it. I'm getting this error message: The KBlackberry is my iPhone device name. I tried restarting ... . My next step is to try a newer version of Xcode. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

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ios - UITableViewCell Buttons with action

Hi I have a custom UITableViewCell with three buttons to handle a shopping cart function, Plus,Minus and Delete button and I need to know which cell ... please help me find a solution? Thanks in advance See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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343 views

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ios - Enterprise In-House App distribution

I'm developing an iPad application for a company. Because of confidentiality reasons they do not want to publish the app to the app-store. ... Server without recompiling and redistribute the whole app? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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294 views

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ios - Send a file as attachment in objective c

I want to mail a file (image) as an attachment by just picking it from an Image Picker. What is the appropriate way I can attach and mail a file (specifically, an image) in iOS Objective-C? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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412 views

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ios - Auto layout UIScrollView with subviews with dynamic heights

I'm having troubles with UIScrollView using auto layout constraints. I have the following view hierarchy, with constraints set through IB: - ScrollView ( ... believe there is a better solution? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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375 views

1 answer

ios - Autolayout: Add constraint to superview and not Top Layout Guide?

I have a UIView in my UIViewController in storyboard which I want to add a constraint on to space that view a distance from the top edge. Now, when I ... have to add it programatically? Im using xcode 6. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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260 views

1 answer

ios - What is the second parameter of NSLocalizedString()?

What is the *comment parameter in: NSString *NSLocalizedString(NSString *key, NSString *comment) If I do this: NSLocalizedString(@"Hello_World_Key", @"Hello ... Mundo"; Isn't the English one redundant? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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236 views

1 answer

ios - UIViewContentModeScaleAspectFill not clipping

I'm trying to draw some thumbnail images at a fixed size (100x100) using UIImageView. I've set the frame size of my image view to be 100x100, and ... , they're sized correctly, but the image is distorted. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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208 views

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ios - How to download audio/video files from internet and store in iPhone app?

I am developing an iPhone app for music. I want to give some options to the user so they can listen the song/music by streaming or they can download the ... of the app? Please help me. Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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242 views

1 answer

ios - iOS4: how do I use video file as an OpenGL texture?

I'm trying to display the contents of a video file (let's just say without the audio for now) onto a UV mapped 3D object in OpenGL. I've ... straight forward file format for video playback on iOS? .mov? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

1 answer

ios - Creating a navigationController programmatically (Swift)

I've been trying to redo the work on my app programmatically. (Without the use of storyboards) I'm almost done, except making the navigation controller manually ... : I forgot to mention it's in Swift. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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185 views

1 answer

ios - Best way to parse URL string to get values for keys?

I need to parse a URL string like this one: &ad_eurl=http://www.youtube.com/video/4bL4FI1Gz6s&hl=it_IT&iv_logging_level=3&ad_flags=0&endscreen_module=http:// ... than using NSMakeRange to get a substring? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

374 views

1 answer

ios - How to use Apple's new .p8 certificate for APNs in firebase console

With the recent up gradation of the Apple developer accounts, I am facing a difficulty that while trying to create the push notification certificates, it is ... that out from these new (.p8) certificates. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

1 answer

ios - UITapGestureRecognizer tap on self.view but ignore subviews

I need to implement a feature that will invoke some code when I double tap on the self.view (view of UIViewCotroller). But the ... setNumberOfTapsRequired:2]; [self.view addGestureRecognizer:doubleTap]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

290 views

1 answer

ios - How can I color a UIImage in Swift?

I have an image called arrowWhite. I want to colour this image to black. func attachDropDownArrow() -> NSMutableAttributedString { let image:UIImage = ... in blackColour. tintColor is not working... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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