Recent questions tagged iOS

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ios - `isNan` in Objective-C

Is there a function like isNan (Javascript example) for Objective-C? I just noticed this code is causing to ... %.2f%%", verschilPrencentage]]; See Question&Answers more detail:os...

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

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705 views

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ios - Swift if let evaluates successfully on Optional(nil)

I have a custom object called Field. I basically use it to define a single field in a form. class Field { var ... if the field.value is 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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766 views

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ios - Adding autolayout constraints to navigation controller programmatically

I am trying to add constraints to a UI label I added on a navigation bar. The UI label shows a running timer ... How do I add this constraint? See Question&Answers more detail:os...

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

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570 views

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ios - Replacement for Navigation-based application template in Xcode 4.2?

Xcode 4.2 no longer has the Navigation-based Application template. What should I use in replacement when starting a 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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ios - Xcode: how to fix Thread 5: EXC_BREAKPOINT (code=1, subcode=0x10025c76c)

when I click the btnLogin in the iPhone the xCode was displayed the error: Thread 5: EXC_BREAKPOINT (code=1, ... breakpoint to the line number See Question&Answers more detail:os...

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

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670 views

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ios - prepareForSegue : how can I set an if-condition?

This may be very rookie but... I've set a segue between two ViewControllers in my Storyboard, with the identifier ... -statement. How to do so? See Question&Answers more detail:os...

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

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792 views

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ios - UIScreen Brightness Property

At the moment I'm trying to create an application to adjust the device's brightness. In iOS5, there is the ... there something I'm 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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634 views

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ios - Does it take 24 hours for custom events to be recorded in Parse Analytics

I'm new to Parse and I've just tried adding a basic event with data like so: NSDictionary *dimensions = ... I using the dashboard incorrectly? See Question&Answers more detail:os...

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

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936 views

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ios - Xcode can't install application

I'm running Xcode 11.2.1 and all of a sudden started getting the error Unable to install "my app name". ... code signature would've changed... See Question&Answers more detail:os...

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

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692 views

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ios - Make UIViewController a singleton?

During the use of my app, the user should be able to start, stop, forward background music. (Across ... do this in the ApplicationDelegate? See Question&Answers more detail:os...

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

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787 views

1 answer

ios - Custom measurement unit

In iOS 10, Apple introduced several components for quantifying measurements. For example: let velocity = Measurement(value: 3, ... .0 / 60.0) } See Question&Answers more detail:os...

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

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710 views

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ios - Replace one app by another in App Store

Good afternoon. There is a project, it is published in appstore. A major update is planned - the project will ... only Bundle Id? 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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847 views

1 answer

ios - Changing manually $(AppIdentifierPrefix) property?

I had application uploaded on apple store. Now I am developing update version. But instead on working on existing ... does it draw its contents? See Question&Answers more detail:os...

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

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639 views

1 answer

ios - UITableViewCell frame height not matching tableView:heightForRowAtIndexPath:

I'm constructing a UITableView with variable height custom table cells, their height determined by the size of a ... , I'd appreciate 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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733 views

1 answer

ios - Cocoapods page redirecting to github

I made a new pod and pushed it to trunk. It's appearing in the cocoadocs (http://cocoadocs.org/docsets/ ... others in the cocoapods.org search: See Question&Answers more detail:os...

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

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775 views

1 answer

ios - When an app crashes does either the 'applicationWillTerminate' or 'applicationDidEnterBackground' get called?

When an app crashes does either the 'applicationWillTerminate' or 'applicationDidEnterBackground' get called or am I ... be stupidly clear. See Question&Answers more detail:os...

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

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659 views

1 answer

ios - "[NSBigMutableString substringWithRange:]: Range {0, 10} out of bounds; string length 9" error with Undo

My app crashes when I try to do undo on UISearchBar. In my app I have code to prevent entering a '%' sign ... before? How do I handle the undo? See Question&Answers more detail:os...

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

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1.1k views

1 answer

ios - Catch and call telephone number in WKWebView

I have a WKWebView that I want to ask to call a number when the number is selected. The contents of the web ... is used to catch these tags? See Question&Answers more detail:os...

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

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594 views

1 answer

ios - Application Loader, new weird warning about Signiant Transfer Engine

Application Loader shown me a weird warning message instead of the check-in-big-green-circle before the "Thank ... Has anyone experienced this? See Question&Answers more detail:os...

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

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886 views

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ios - AVAudioSession's OutputVolume never changes

There are plenty of questions and answers on SO that say [AVAudioSession sharedInstance].outputVolume is the only way to ... checkVolume]; }); } See Question&Answers more detail:os...

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

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629 views

1 answer

ios - App thinks its running on 3.5 inch iPhone when it is on 4 inch

I am developing app for both 3.5 and 4 inch screens. However, suddenly on the simulator the screen size ... anyone came across this before? See Question&Answers more detail:os...

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

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677 views

1 answer

ios - What are APP_CLIENT_ID and SERVER_CLIENT_ID and where do I find them?

I'm trying to implement server-side API access for my iOS app. The Google docs (here) mention ... in the Google Developers Console? See Question&Answers more detail:os...

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

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775 views

1 answer

ios - Error: UICollectionView must be initialized with a non-nil layout parameter

I am trying to create a Facebook messenger like application from a youtube tutorial. I have a home page where the ... not been implemented") } } See Question&Answers more detail:os...

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

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859 views

1 answer

ios - Clang Error in XCode

My app had worked well in xcode 4.4.1, but I just updated to 4.5 and am now getting a clang error. Not ... code 1 (use -v to see invocation) See Question&Answers more detail:os...

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

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1.1k views

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ios - Project-Swift.h file not found

I have a new Swift project with a few files, I've needed to add some Objc code. In Build Settings, my ... "MyProject-Swift.h" in Blakey.h? See Question&Answers more detail:os...

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

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838 views

1 answer

ios - swift pull to refresh

i have my refreshcontroller with a scrollview.. self.refreshControl = UIRefreshControl() self.refreshControl.attributedTitle ... 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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659 views

1 answer

ios - Remove nested key from dictionary

Let's say I have a rather complex dictionary, like this one: let dict: [String: Any] = [ "countries" ... ("countries.japan.capital.lat"). See Question&Answers more detail:os...

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

0 votes

969 views

1 answer

ios - Swift viewWillTransition not called

I'm creating a full screen image gallery using a UICollectionView. When the user rotates the device, I perform ... could be causing this issue? See Question&Answers more detail:os...

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

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