Recent questions tagged iOS

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ios - Circular (round) UIView resizing with AutoLayout... how to animate cornerRadius during the resize animation?

I have a subclassed UIView that we can call CircleView. CircleView automatically sets a corner radius to half of ... exist around said UIView. 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 - Firebase: when to call removeObserverWithHandle in swift

Documentation says you need to call observeEventType:withBlock to remove an observer if you no longer need it. I' ... because the view appears. 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 - Status bar is Landscape, but [[UIApplication sharedApplication] statusBarOrientation] returns portrait

This problem appears to be intermittent, but I am not sure why exactly. When running my application on the device ... controller to be loaded)? 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 - Grand Central Dispatch vs. NSThread

I created some test code for NSThread and Grand Central Dispatch (GCD): - (void)doIt:(NSNumber *)i { sleep( ... finishes? Thanks for the help. 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 storyboard: Why does the iPad storyboard show iPhone sized views?

I have a universal app that uses storyboards. There is an iPhone storyboard and an iPad storyboard. However, in ... lay out the UI correctly. See Question&Answers more detail:os...

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

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354 views

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ios - What does the "simd" prefix mean in SceneKit?

There is a SCNNode category named SCNNode(SIMD), which declares some properties like simdPosition, simdRotation and so ... "simd" mean exactly? 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 - Can apple push notifications send more parameters than alert and sound?

I have several pieces of metadata that I need to associate with a push notification. For example user no, message id ... ; };} Is this 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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427 views

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ios - contentsize and contentOffset equivalent in NSScroll view

I am porting an app from Ipad to mac. (I know that it sounds weird) I stuck with NSScrollview. ... , contentOffset equivalent in NSScrollview. 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 - Which is more efficient way? StoryBoard or XIB?

My question is slightly different then my title suggest. I have worked with xib. Now i am trying to ... allocation advantages in storyboard? See Question&Answers more detail:os...

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

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310 views

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ios - UIView outside of a View Controller in a Storyboard

I'm stuck with a question I can't find an answer to in the official documentation, on Stackoverflow or on Google. ... or where to look? 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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462 views

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ios - What happens to JavaScript execution (settimeout, etc.) when iPhone/Android goes to sleep?

I have a jQuery Mobile web app which targets iOS and Android devices. A component of the application is a ... to restart the background task). 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 - What are definesPresentationContext and providesPresentationContextTransitionStyle

ViewController has definesPresentationContext and providesPresentationContextTransitionStyle, but have no idea about how they work. ... demo? See Question&Answers more detail:os...

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

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285 views

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ios - Objective-C method conflicts with optional requirement method Swift

After the Xcode update, the compiler began to throw an error on the working code (both functions are in the AppDelegate ... it worked in 6.2. See Question&Answers more detail:os...

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

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259 views

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ios - Is the weakSelf/strongSelf dance really necessary when referencing self inside a non-retained completion called from a UIViewController?

Say I have the following method inside a UIViewController subclass: - (void)makeAsyncNetworkCall { [self.networkService ... it's not necessary. See Question&Answers more detail:os...

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

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300 views

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ios - how to call a method of multiple arguments with delay

I'm trying to call a method after some delay. I know there is a solution for that: [self ... using performSelector:withObject:afterDelay: 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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341 views

1 answer

ios - How to add only a TOP border on a UIButton?

I know how to add border to a button in iOS 7, with the following code : [[myButton layer] setBorderColor:[[[ ... to add only the top border. See Question&Answers more detail:os...

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

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516 views

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ios - How to change font color of the title in grouped type UITableView?

I have a grouped type table view and it looks pretty cool. But, if I change the background ... the tableView:viewForHeaderInSection: method? See Question&Answers more detail:os...

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

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327 views

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ios - UIStoryboard: What's the Correct Way to Get the Active Storyboard?

I am currently furiously digging through all the docs, and haven't quite found what I'm looking for. I suspect ... a correct way of doing 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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278 views

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ios - FBSOpenApplicationErrorDomain error 1

I'm trying to run my iOS app that was migrated from Swift 1.2 to Swift 2.0 in Xcode 7 using iPhone ... , quit Xcode, clean project, etc. See Question&Answers more detail:os...

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

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483 views

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ios - FBSDK Login Error Code: 308 in Objective-C

I keep getting "Error Domain=com.facebook.sdk.login Code=308 "The operation couldn't be completed. (com.facebook ... to share code upon 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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399 views

1 answer

ios - NSData and UIImage

I am trying to load UIImage object from NSData, and the sample code was to NSImage, I guess they should ... the UIImage loading NSData 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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578 views

1 answer

ios - Xcode 7: App installation failed: A valid provisioning profile for this executable was not found

I have already searched and almost implemented max solution but it's not installing any app even though if I ... this executable was not found. See Question&Answers more detail:os...

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

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291 views

1 answer

ios - Remove Last Two Characters in a String

Is there a quick way to remove the last two characters in a String in Swift? I see there is a simple ... the last two characters? 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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445 views

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ios - Difference between internal and external testers in iTunes Testflight beta testing?

Can anyone please explain in complete details the difference between internal and external testers in iTunes ... testflight beta testing. See Question&Answers more detail:os...

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

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614 views

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ios - iTunes account creation not allowed when trying to test In-App Purchases

I have an app in the App Store and I want to test in-app purchases. I followed the steps described on the ... to encounter this kind of error. See Question&Answers more detail:os...

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

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466 views

1 answer

ios - How to compare two strings ignoring case in Swift language?

How can we compare two strings in swift ignoring case ? for eg : var a = "Cash" var b = "cash" Is there any ... true if we compare var a & var b See Question&Answers more detail:os...

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

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380 views

1 answer

ios - How to get the filename from the filepath in swift

How to get the filename from the given file path string? For example if I have a filepath string as ... -D19D-4E3F-8110-6EACB2833CE3.MOV See Question&Answers more detail:os...

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

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426 views

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ios - Xcode 8.3.3 "No accounts with iTunes Connect access"

When trying to upload an App to iTunes connect in Xcode 8.3.3, I get the error: iTunes Connect access for " ... upload my app to the AppStore? See Question&Answers more detail:os...

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

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