Recent questions tagged iOS

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ios - iOS9 - This application is modifying the autolayout engine from a background thread -- where?

For searching, the error message is: This application is modifying the autolayout engine from a background thread ... modifying the UI? 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 :function types cannot have argument label breaking my build

It seems that for some reason Swift have chosen to make coding in it less readable by forcing users to ... labels in my completion handlers? 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 - The executable gets signed with invalid entitlements in Xcode

I got this error with Xcode 5 when I try to run the app on my device. The executable was signed with invalid ... how to get rid of the error? 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 - Swift - Download a video from distant URL and save it in an photo album

I'm currently displaying a video in my app and I want the user to be able to save it to its device gallery/ ... Swift and targeting iOS 8.0 min. 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 do some stuff in viewDidAppear only once?

I want to check the pasteboard and show an alert if it contains specific values when the view appears. I ... of the view controller instance. See Question&Answers more detail:os...

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

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423 views

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ios - Supporting iPhone 6 and iPhone 6+ with different launch/splash screen image for iPad Portrait and Landscape orientations

What I understood from the available documentation and my testing is that All existing Apps on iPhone 6 and ... size classes for iPad landscape 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 send data back by popViewControllerAnimated for Swift?

I need to send some data back from secondView to First View by popView. How can i send back the data by popViewControllerAnimated? 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 - Swift error : signal SIGABRT how to solve it

I'm just a beginner in Swift coding. My idea is quite simple which is an app with two buttons. When clicked, ... What is wrong with my code? 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 the SKStoreReviewController does not let me submit a review?

I succeeded implementing the SKStoreReviewController. But when the prompt comes up, the "Submit" button is grey & disabled ... is the same. Why? See Question&Answers more detail:os...

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

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560 views

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ios - Code sign error : bundle format unrecognized, invalid, or unsuitable

Im working on an iOS app, Swift language, iOS8, Xcode 6.1. It was running fine on the iPad. Then I ... causing this problem. Any help please? See Question&Answers more detail:os...

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

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297 views

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ios - How to know Push Notification delivery status

I am using push notification in an app. Everything is going fine. Sometimes message sent from server but in app side ... app and which are not? 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 - Designing inside a scrollview in xcode 4.2 with storyboards

I have a vertically scrolling uiscrollview - imagine an 'about this app' page of a tab bar app which goes on a ... down with the arrow keys.. See Question&Answers more detail:os...

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

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360 views

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ios - Current Week Start and End Date

I want to get the current week start and end date and I also want to use the previous week start and end ... current month. 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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289 views

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ios - How can I change the font of the back button for my navigation bar?

How can I change the font of the back button for my navigation bar. The back button is either "back ... the leftBarButton? optional returns nil. See Question&Answers more detail:os...

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

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385 views

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ios - iPhone In-App Purchase Store Kit error -1003 "Cannot connect to iTunes Store"

I've been working on adding in-app purchases and was able to create and test in-app purchases using Store Kit ... my normal app store account. See Question&Answers more detail:os...

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

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850 views

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ios - Type 'ViewController' does not conform to protocol 'UITableViewDataSource'

Started practice swift. In singleViewController I am trying to make a UITableView. In storyboard I set the datasource ... row)" return cell } See Question&Answers more detail:os...

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

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249 views

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ios - Find Object with Property in Array

is there a possibility to get an object from an array with an specific property? Or do i need to loop trough ... $0.imageUUID == imageUUID } ) See Question&Answers more detail:os...

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

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380 views

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ios - How to format a Double into Currency - Swift 3

I'm new to Swift programming and I've been creating a simple tip calculator app in Xcode 8.2, I have my ... Amount: $(totalBillAmount)" } } See Question&Answers more detail:os...

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

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315 views

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ios - How to change UINavigationBar background color from the AppDelegate

I know how to change the UINavigationBar background image by doing [[UINavigationBar appearance] setBackgroundImage:[ ... the right direction? See Question&Answers more detail:os...

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

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356 views

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ios - Example for login screen modally based on storyboard

I am learning ios/ xcode and at a roadblock. I have a tabbarcontroller+navigation based design. I need to ... changes would be great. 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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291 views

1 answer

ios - How to get a call event using CTCallCenter:setCallEventHandler: that occurred while the app was suspended?

The documentation for CTCallCenter:setCallEventHandler: states that: However, call events can also take place while your ... is on iOS 7. See Question&Answers more detail:os...

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

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307 views

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ios - How to get download progress in AFNetworking 2.0?

I am using AFURLSessionManager to create a new download task: AFURLSessionManager* manager = ... NSProgress* p = ... 2.0 Any ideas? See Question&Answers more detail:os...

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

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454 views

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ios - Core Data: Do child contexts ever get permanent objectIDs for newly inserted objects?

I have an app with two managed object contexts setup like this: Parent Context: NSPrivateQueueConcurrencyType, linked ... with this approach? See Question&Answers more detail:os...

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

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388 views

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ios - Passing data to Apple Watch app

I am trying to pass data from my app into my Apple Watch app. Basically, I am using the same method as I ... Anyone know where I am going wrong? 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 - Receiving Push Notifications while in background

I know this is covered in a lot of places, but I cannot figure this out. I use Urban Airship for push ... notification is present. Any ideas? See Question&Answers more detail:os...

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

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327 views

1 answer

ios - AlertController is not in the window hierarchy

I've just created a Single View Application project with ViewController class. I would like to show a UIAlertController ... ! What should I 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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318 views

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ios - How can I make a function execute every second in swift?

I want to add a score to the top of my scene in the game I am working on. The score is going ... an unrecognized selector sent to instance error See Question&Answers more detail:os...

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

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435 views

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ios - @IBDesignable crashing agent

When I write my own UIButton-extended class and make it @IBDesignable, I receive two errors in Interface Builder, namely ... 2. (Running in VM) See Question&Answers more detail:os...

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

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