Recent questions tagged IOS

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ios - How do I set UIButton background color forState: UIControlState.Highlighted in Swift

I can set the background color for a button but I can't work out how to set the background color for ... to go down the setBackgroundImage path? 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 - Error creating LLDB target

I'm getting this error whenever I build in XCode 6 beta 4. It seems to be making my app insanely slow. Warning ... I fix it? 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 - Centering subview's X in autolayout throws "not prepared for the constraint"

I have a custom UIView subclass which is being initialized via a nib. In -awakeFromNib, I'm creating a subview ... layer = <CALayer: 0xc131b50>> See Question&Answers more detail:os...

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

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291 views

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ios - Programmatically switching between tabs within Swift

I need write some code to switch the view to another tab when the iOS app starts (so, for example, the ... quite sure how to implement this. 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 - WKWebView in Interface Builder

It seems that the IB object templates in XCode 6 beta are still creating old-style objects (UIWebView for iOS ... that better for some reason? See Question&Answers more detail:os...

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

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231 views

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ios - custom interactive transition animation

I want to implement an interactive transition between two view controllers. I would like it to be a modal ... test out any possible solutions. 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 authenticate the GKLocalPlayer on my 'third party server'?

iOS7 introduced new GKLocalPlayer method generateIdentityVerificationSignatureWithCompletionHandler(). Does anyone know how to use ... -side.. 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 pass data from modal view controller back when dismissed

I've followed the instructions here but I'm still unsure about this part: modalVC.delegate=self; self. ... typeState) print(categoryState) } 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 - Changed project name in Xcode causing naming error

My old name consisted of a camel case type name similar to this MyApp I then changed it to Myapp ' ... the -temp-caseinsensitive-rename portion? 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 can I check if my AVPlayer is buffering?

I want to detect if my AVPlayer is buffering for the current location, so that I can show a loader or ... in the documentation for AVPlayer. See Question&Answers more detail:os...

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

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389 views

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ios - How to show UIAlertController from Appdelegate

I'm working with PushNotification on iOS app. I would like to show a UIalertcontroller when the app receive a ... warning or the app crashes. 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 - When to use takeUnretainedValue() or takeRetainedValue() to retrieve Unmanaged Objects in Swift?

According to Using Swift with Cocoa and Objective-C you can use takeUnretainedValue() and takeRetainedValue() ... always takeUnretainedValue()? See Question&Answers more detail:os...

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

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422 views

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ios - Cannot set searchBar as firstResponder

I have a searchBar I'm setting in a tableviewcontroller. i've referenced this similar question UISearchBar cannot ... but no keyboard appears. See Question&Answers more detail:os...

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

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248 views

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ios - Set timeout in Alamofire

I am using Alamofire 4.0.1 and I want to set a timeout for my request. I tried the ... setting timeout throws NSURLErrorDomain error #1931 See Question&Answers more detail:os...

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

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466 views

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ios - How to change the UINavigationController back button name?

I have a UIViewController and I'm navigating from my first view controller to second view controller and ... button in the navigationController. See Question&Answers more detail:os...

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

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473 views

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ios - How to use addTarget method in swift 3

here is my button object let loginRegisterButton:UIButton = { let button = UIButton(type: .system) button. ... removed it compiles successfully See Question&Answers more detail:os...

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

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283 views

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ios - Umbrella framework

I've created a framework in which is inserted the second framework, the so-called "umbrella framework". When I ... to embedded binaries at all) See Question&Answers more detail:os...

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

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500 views

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ios - How can I programmatically enable Guided Access (Kiosk mode) on an iPhone?

Question How do I automate Guided Access mode on an iPhone? I will need to automate the enabling and removal ... looking for an iOS solution See Question&Answers more detail:os...

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

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401 views

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ios - How to set device (UI) orientation programmatically?

Would like everything on the screen (UI) to be able to rotate from landscape left to right or vica versa. How do ... only one at a time? Cheers See Question&Answers more detail:os...

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

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330 views

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ios - NSDateFormatter and current language in iOS11

It appears that default behavior for NSDateFormatter has been changed in iOS11. This code used to work and ... somebody confirm my findings? See Question&Answers more detail:os...

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

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186 views

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ios - Apple Live Photo file format

Apple will introduce Live Photo in iOS 9/iPhone 6s. Where is the file format documented? See Question&Answers more detail:os...

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

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354 views

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ios - How to set kerning in iPhone UILabel

I am developing an iPhone app, and I want to set kerning in UILabel. The code I've written (possibly ... attStr [self.view addSubview:label1]; See Question&Answers more detail:os...

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

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945 views

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ios - UICollectionView header dynamic height using Auto Layout

I have a UICollectionView with a header of type UICollectionReusableView. In it, I have a label whose length varies by ... when I run the 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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483 views

1 answer

ios - How can I set an NSDate object to midnight?

I have an NSDate object and I want to set it to an arbitrary time (say, midnight) so that I can use the ... retain the date (day/month/year)? See Question&Answers more detail:os...

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

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175 views

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ios - How to rotate image in Swift?

I am unable to rotate the image by 90 degrees in swift. I have written below code but there is an error ... .height), size: oldImage.cgImage)) See Question&Answers more detail:os...

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

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277 views

1 answer

ios - Add lefthand margin to UITextField

I want to put the left margin of a UITextField's text at 10 px. What is the best way to do that? See Question&Answers more detail:os...

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

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351 views

1 answer

ios - How to compare two NSDate objects in objective C

I have objects of Date type. I want to compare them, and I have written an if condition in the following ... I am getting random behavior. See Question&Answers more detail:os...

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

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357 views

1 answer

ios - Restore already bought in-app-purchases on iPhone?

I got so far: After a reinstall, a user needs to click "buy feature", then he gets scared with the $0. ... show parental control warning */ } } See Question&Answers more detail:os...

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

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