Recent questions tagged IOS

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ios - How to sort an array of dates in descending order

I have a NSDictionary that parsed to an array one of the element is date, i tried using [startimeArray ... sort in descending order. 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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ios - Make UIView fill containing view using auto layout in Interface Builder instead of code

How do I use auto-layout to make a child view fill its parent, or at least anchor all its edges to the ... from 568 to 480 as expected. 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 simulator - ld warning: too many personality routines for compact unwind to encode

The linker for an iOS simulator target I have is reporting the following warning: ld: warning: too many personality ... I do to address 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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ios - Terminating app due to uncaught exception 'UIViewControllerHierarchyInconsistency',

I created a toolbar above the picker with two buttons and worked on ios7, when i run in ios8 crash: Terminating app ... problem. What do I do? 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 - Unable to lock orientation on iPad Air 2

The iOS application I am working on has a view that needs to be locked in landscape orientation. ... is displayed via presentViewController See Question&Answers more detail:os...

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

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349 views

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ios - Implement CoreData into an existing project using Swift

I am currently using Xcode 6 beta 7 and decided I needed CoreData after already creating my project. I have ... his problem was solved either. See Question&Answers more detail:os...

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

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472 views

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ios - How to play keyboard click sound in custom keyboard?

I had created custom keyboard with UIView. However I didn't hear click sound of keyboard. So I tried following codes ... (0x450); How can I? See Question&Answers more detail:os...

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

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335 views

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ios - _kCFStreamErrorCodeKey=-2102 only with wifi of some ISPs

I use below code to send a file to the server: NSString *urlString = [NSString stringWithFormat:@"%@%@",[ ... about what is the problem? 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 - SpriteKit SKAction easing

Well the title gives the question away, how can I apply easing to the SKAction node actions in SpriteKit? I found ... . How can I create that? See Question&Answers more detail:os...

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

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734 views

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ios - How to convert hexadecimal string to an array of UInt8 bytes in Swift?

I have the following code: var encryptedByteArray: Array<UInt8>? do { let aes = try AES(key: "passwordpassword ... string to its original form. See Question&Answers more detail:os...

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

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353 views

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ios - Why do Objective-C APIs return implicitly unwrapped optionals?

I am rather perplexed by this. If we take the method cellForRowAtIndexPath: in UITableView for example, it's ... Swift, or something more? See Question&Answers more detail:os...

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

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518 views

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ios - How to detect when a UIWebView has completely finished loading?

I am trying to build a filter for a UIWebView and I am struggiling to detect when the UIWebView has completely ... of approved URLS. ANy ideas? See Question&Answers more detail:os...

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

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494 views

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ios - Unable to install app in simulator Xcode 9 beta

I downloaded Xcode 9 beta recently, and when I tried to run my app in the simulator it is not getting installed. I ... to work in Xcode 8.3.3 See Question&Answers more detail:os...

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

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357 views

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ios - when should you use __bridge vs. CFBridgingRelease/CFBridgingRetain?

I have this code that uses "__bridge" to cast the ids of colors: CGColorRef tabColor = (5 == 5 ? [UIColor ... locations); be a better solution? See Question&Answers more detail:os...

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

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407 views

1 answer

ios - How can I merge two arrays into a dictionary?

I have 2 arrays: var identic = [String]() var linef = [String]() I've appended them with data. Now ... ideas are greatly appreciated. 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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435 views

1 answer

ios - Apple watch simulator issue

I am trying to debug and run the app on apple watch simulator. I have tried by using different target for ... How to overcome this 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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388 views

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ios - Swift + CoreData: Can not set a Bool on NSManagedObject subclass - Bug?

I have a little strange issue which I can't seem to figure out, I have a simple entity with a custom ... file this as a bug report? See Question&Answers more detail:os...

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

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403 views

1 answer

ios - Example handling JSON with SwiftyJSON

I would like to handle json with SwiftJSON, but I stacked. Does anyone show me example code? I tried to use ... } } Here is my Xcode capture See Question&Answers more detail:os...

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

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490 views

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ios - UITextField begin dictation

I'd like to programmatically put my UITextField input into dictation mode, without requiring the user to bring up ... no solution. Any ideas? See Question&Answers more detail:os...

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

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368 views

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ios - Can't import Code-signing Public or Private keys using Keychain access (Mac OS X Mavericks)

In an attempt to build an iOS project (in XCode), I need to import my colleague's public and private ... importing the keys as explained above. See Question&Answers more detail:os...

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

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359 views

1 answer

ios - Lazy var giving 'Instance member can not be used on type' error

I had this error several times now and I resorted to different workarounds, but I'm really curious why it happens. ... be used on type 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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527 views

1 answer

ios - Troubles with changing the font size in UITableViewHeaderFooterView

Here is the problem, I subclass a UITableViewHeaderFooterView and want to change the font size: - (id)initWithFrame:( ... ; font-size: 14.00pt See Question&Answers more detail:os...

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

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577 views

1 answer

ios - How do I create a UITabBarController with a custom UITabBar class without using IB?

I can create a UINavigationController with custom bar classes by using initWithNavigationBarClass:toolbarClass:. There doesn ... I achieve 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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516 views

1 answer

ios - How to know the current scale of a UIView?

How do you find the current scale (zoom level) of a 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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426 views

1 answer

ios - How to update image in cache when image changed on server with SDWebImage

I am using SDWebImage library to download images from server. https://github.com/rs/SDWebImage SDWebImage not able ... with the same url. See Question&Answers more detail:os...

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

0 votes

463 views

1 answer

ios - what's the difference between view's hidden = yes and alpha = 0.0f

I have a question about UIView, what's the difference between views hidden, alpha and opaque? The effect of setting view ... = 0.0f is the same. 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

1 answer

ios - How to make UITableView Header selectable?

I have made a custom section-header for UITableView, that includes some controls like segmented control, ... header view selectable? See Question&Answers more detail:os...

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

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796 views

1 answer

ios - error: unable to load standard library for target 'arm64-apple-ios10.0-simulator'?

I updated my Xcode but not able to build. It's failing with: <unknown>:0: error: unable to load ... no defines_module=yes -sdk "iphonesimulator" See Question&Answers more detail:os...

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

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