Recent questions tagged iOS

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ios - AVCaptureVideoPreviewLayer landscape orientation

How can I get 'AVCaptureVideoPreviewLayer' to display properly in landscape orientation? It works fine in ... in landscape orientation. 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 - NSURLConnection finished with error - code -1022

Guys i try to learn webview it can't load give me error like: NSURLConnection finished with error - code ... [_webView loadRequest:request]; } 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 - CoreData asynchronous fetch causes concurrency debugger error

I'm using the -com.apple.CoreData.ConcurrencyDebug argument on launch to debug concurrency in my CoreData app. ... reloadData]; } } 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 set language other than English as the development language and Base localization?

When an Xcode project of iOS app is newly created, in the project (not target) setting we can see that ... is Chinese rather than English. See Question&Answers more detail:os...

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

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619 views

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ios - Find the Xcode Build scheme name at run time

Is there a way to find out the Scheme used at the run time ? May be there is a better way to do this, ... sending pkg to apple for review :( See Question&Answers more detail:os...

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

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416 views

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ios - Creating manual segue correctly through storyboard and xcode

I'm quite new to xcode, and I am trying to develop a sample app that is basically an embedded tableview ... defined in storyboard and the code. 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 - Create a string with n blank spaces or other repeated character

I want to make a string with n blank spaces using Swift, but without using a for loop or manually like this: // ... 5-blank space var s = " " See Question&Answers more detail:os...

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

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853 views

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ios - Deinit not called on a UIViewController, but Dealloc is

It seems like the Swift equivalent of dealloc is deinit. However, when you attempt to define the method on a ... on to the view controller. See Question&Answers more detail:os...

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

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956 views

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ios - Add border for dots in UIPageControl

I want to add border color for dots in UIPageControl. Here is the small picture of it: I am able to put ... way to achieve that? Thanks :) See Question&Answers more detail:os...

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

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833 views

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ios - performSegueWithIdentifier has no segue with identifier

I encountered a crash while testing my app. The following image is my storyboard: I have the code in View ... her, what is the difference? See Question&Answers more detail:os...

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

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493 views

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ios 4.2 - Close the keyboard on UITextField

I'm a newbie developing for iOS devices. I inserted an UITextField on InterfaceBuilder, and I assigned with the code ... press the "Return" 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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819 views

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ios - Reload section method in swift 3?

I have code written in objective c.I want to convert this code into the swift3 code. [_expandableTableView reloadSections:[ ... how to do 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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602 views

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ios - Admob banner integration in Cocos2d 2.0 / Admob banner in iphone games

Does anybody know how to make work admob in cocos 2d v2, all the documentation is based in a view root ... me I appreciate too much!! See Question&Answers more detail:os...

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

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649 views

1 answer

ios - Custom Keyboard extension with UITextField

I have custom keyboard extension with UITextField in it. I am able switch to UITextField's text input, but ... " app provides such possibility) See Question&Answers more detail:os...

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

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425 views

1 answer

ios - Linker errors after upgrading Xcode to 4.5.2 and OpenCV to 2.4.3

My project was working just fine until this morning. I was using xcode 4.3, and an older version of OpenCV (I ... on iOS versions older than 5? See Question&Answers more detail:os...

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

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506 views

1 answer

ios - Placing, Dragging and Removing SCNNodes in ARKit

I'm working on a small project using ARKit. I want to be able to add objects to my AR SceneView on tap, ... fix the issue. Hope this helps. See Question&Answers more detail:os...

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

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1.3k views

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ios - Background Scanning for BLE in Swift

I am attempting to have my app scan for BLE devices in the background and to search for a bit of ... the right direction. 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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485 views

1 answer

ios - Converting NSData to SecKeyRef

i have a public key which i gathered from a remote server and i want to perform RSA encryption with that ... object type. Thanks 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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432 views

1 answer

ios - dispatch_sync always scheduling a block on Main Thread

I am executing a block using dispatch_sync and the block is executed correctly. But this block is executed on ... am I still missing something? See Question&Answers more detail:os...

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

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416 views

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ios - Xcode 6 - Template without Storyboards

I know this sounds trivial, but I'm quite irritated with the lack of an 'empty' template for iOS apps in beta ... so ugly... Thanks 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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979 views

1 answer

ios - Custom Footer view for UICollectionview in swift

I am re-writting an objective-C app of min in swift and decided that a collection view works better then a tableview ... (2, 2, 52, 2) See Question&Answers more detail:os...

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

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517 views

1 answer

ios - Core Data ordering with a UITableView and NSOrderedSet

What are the steps that I need to perform to implement user-defined ordering in a UITableViewController with Core ... add a sort descriptor)? See Question&Answers more detail:os...

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

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392 views

1 answer

ios - Scheduling local notification from within a Today extension

I'm making an app that contains a Today Extension. The today extension displays a list of timers, and if the user ... how I want to do things. 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 - How to open specific view controller when push notification received?

I got stuck specific view controller is not move when I tap on push notification alert when application is not open ... me what I am missing. See Question&Answers more detail:os...

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

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589 views

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ios - Error Upload TestFlight : Invalid IPA / dSYM not found

This shown on TestFlight web after uploaded. "Invalid IPA: Couldn't find executable specified in Info.plist - ... appreciate. thanks 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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656 views

1 answer

ios - UICollectionViewCell to UIButton Focus in tvOS

I have a UICollectionView which contains 12-13 UICollectionViewCells. I can easily focus on the UICollectionViewCells and ... what is going on? See Question&Answers more detail:os...

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

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517 views

1 answer

ios - Setting up third-party server to interact with Game Center

I'm thinking of adding a feature to my iOS game to allow players to create their own game levels, share them ... /etc. If that's possible. See Question&Answers more detail:os...

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

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583 views

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ios - NSCache and background

I've noticed that NSCache evicts all of its object when the application goes in background. is that the ... you know any valid alternative? See Question&Answers more detail:os...

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

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