Recent questions tagged IOS

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ios - I am getting unsupported parameter combination CGBitmap error with swift

I am trying to create a CGContext in swift. It compiles but throws an error at runtime. let colorSpace: ... Can't unwrap Optional.None See Question&Answers more detail:os...

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

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282 views

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ios - Negate #available statement

I want to execute a code block only on devices running with an OS older than iOS8. I can't do: ... #available statement elegantly with Swift ? 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 - iphone - didSelectRowAtIndexPath: only being called after long press on custom cell

I am creating one table view based application. I have created a custom table cell for table, that contains 2 ... fire. Custom cell properties: See Question&Answers more detail:os...

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

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402 views

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ios - Cannot convert value of type NSAttributedString.DocumentAttributeKey to .DocumentReadingOptionKey

I found this string extension somewhere on SO that allows me to turn html code into an attributed string: func ... How do I fix 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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290 views

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ios - Passing data with segue through navigationController

I'm trying to push data from one viewController to another. I've connected a viewController to another ViewController' ... = nextId! } } See Question&Answers more detail:os...

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

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363 views

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ios - How to set selected segment index in UISegmentedControl?

I'm trying to avoid an app crash here... I have a button that will remove a segment from a UISegmentedControl. If ... what I can do from here. See Question&Answers more detail:os...

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

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643 views

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ios - Cannot run application on simulator after installing Xcode 11 - CFBundleVersion error

Yesterday, I've downloaded beta version of Xcode 11. After that, I've opened my project and tried to run ... is working on physical iPhone XS. 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: Any way to refresh/re-run the playground?

The Playground in Xcode automatically updates as you type, but I can't figure out how to get the Playground to ... there's a menu shortcut 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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255 views

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ios - how to add watermark on a exist image

I found some code as follows: UIGraphicsBeginImageContext(CGSizeMake(320, 480)); // This is where we resize captured ... it's the best way. See Question&Answers more detail:os...

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

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265 views

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ios - How to merge Audio and video using AVMutableCompositionTrack

In my application I need to merge audio and video and then I need to play the audio file in the Mediaplayer ... me some ideas 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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235 views

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ios - How to set MDM Payload's "Identity" in iPCU？

Someone tell me I should first do configure SCEP using IPCU,so I set a SCEP sever in Windows sever 2008.Then set ... for next step. 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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ios - About viewController's "viewDidLoad" and "viewWillAppear" methods

I've got a question regarding the two mentioned methods, since in my tests I don′t make clear the order ... does this actually work? 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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215 views

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ios - Link to Safari "Add to Home Screen" from inside app?

My app has a custom URL scheme and can use deep linking to jump straight from a URL to some content. I'd ... how I might do something similar? See Question&Answers more detail:os...

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

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246 views

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ios - OAuth2, Swift 3, Instagram

There seem to be lots of changes at IG. Many OAuth2 repos, all seem to have bugs, or really not easily ... solution. thanks a million. :-) See Question&Answers more detail:os...

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

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831 views

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ios - AutoSizing cells: cell width equal to the CollectionView

I'm using AutoSizing cells with Autolayout and UICollectionView. I can specify constraints in code on cell ... when working with AutoLayout. See Question&Answers more detail:os...

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

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536 views

1 answer

ios - Calculate age from birth date

I cant find age in from birth date. What I got is fatal error: unexpectedly found nil while unwrapping an ... year - dateComponentBirth.year } } 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

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ios - How to control hardware mic input gain/level on iPhone?

My audio-analysis function responds better on the iPad (2) than the iPhone (4). It seems sensitive to softer ... I'm just missing it somehow. See Question&Answers more detail:os...

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

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182 views

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ios - does NSThread create autoreleasepool automatically now?

I have test code like this - (void)viewDidLoad { [super viewDidLoad]; NSThread *thread = [[NSThread alloc] ... use Xcode5 and not using ARC See Question&Answers more detail:os...

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

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470 views

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ios - How to customize UIRefreshControl with different image and position?

I have been looking around but couldn't find anything good about this. I would like to customize the default ... a bit. 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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207 views

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ios - Core Data Store included in App Bundle

I can't find a clear description of these steps in Apple docs... I have a xcdatamodeld in my xcode ... would be really appreciate ! Kheraud See Question&Answers more detail:os...

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

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395 views

1 answer

ios - UITextField not getting keyboard input

I'm having troubles entering text into an UITextField under a SVProgressHUD (Basically an UIView with a full-screen ... it still does not work. See Question&Answers more detail:os...

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

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205 views

1 answer

ios - Automating Xcode' Debug > Simulate Location command

Is there any programmatic way to control the xcode > simulate location command? I have external location test scripts I' ... , and if so how? See Question&Answers more detail:os...

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

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410 views

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ios - XCode: How to change layout of views between landscape and portrait mode

In portrait mode I have four views on top of one another from the top to the bottom of the view controller ( ... for view 4 in landscape mode)? See Question&Answers more detail:os...

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

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330 views

1 answer

ios - UIScrollView not scrolling regardless of large contentSize

I have created a UIScrollView and added subviews to it in Interface Builder, but I am not able to get it to ... at any point does not work. See Question&Answers more detail:os...

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

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768 views

1 answer

ios - How to hide the home indicator with SwiftUI?

What's the UIKit equivalent of the prefersHomeIndicatorAutoHidden property in SwiftUI? See Question&Answers more detail:os...

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

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346 views

1 answer

ios - UISearchController Not Redisplaying Navigation Bar on Rotate

I have implemented the UISearchController and it is working great except... When I click on the ... = self.venueSearchController.searchBar; See Question&Answers more detail:os...

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

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205 views

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ios - RegEx in Swift?

I am learning Swift, and I have (another) question. Are there regular espressions in Swift, and, if so, ... . Sorry for another basic question. 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 - iOS6 iPhone 5 nothing clickable at bottom of screen

I have an app I am trying to convert and make ready for the new iPhone 5 screen size. I added the new ... clickable but the bottom part is not. See Question&Answers more detail:os...

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

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