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 ... /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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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 ... 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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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.)?((? ... 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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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 ... 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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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 ... .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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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 ... 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, ... 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: ... 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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ios - UICollectionView Decoration View

Has anyone implemented a decoration view for the iOS 6 UICollectionView? It's impossible to find any tutorial on ... 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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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 ... . 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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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 ... , 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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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 ... 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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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 ... 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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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 ... 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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ios - UITableViewCell Buttons with action

Hi I have a custom UITableViewCell with three buttons to handle a shopping cart function, Plus,Minus and Delete ... 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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ios - Enterprise In-House App distribution

I'm developing an iPad application for a company. Because of confidentiality reasons they do not want to ... 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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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 ... 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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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 ... 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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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 ... ? 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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ios - What is the second parameter of NSLocalizedString()?

What is the *comment parameter in: NSString *NSLocalizedString(NSString *key, NSString *comment) If I do this: ... 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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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 ... , 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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1.6k 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 ... 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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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 ... 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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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, ... 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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1.6k views

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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 ... to get a substring? See Question&Answers more detail:os...

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

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1.7k 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 ... 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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2.0k views

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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 ( ... [self.view addGestureRecognizer:doubleTap]; See Question&Answers more detail:os...

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

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1.7k 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() -> ... 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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