Recent questions tagged iOS

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ios - Alert view is showing white rectangle in iOS7

The following code works perfectly from iOS 5 to 6.1. I even have applications in store with that code: ... not fully initialized or something. 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 - UIViewController In-Call Status Bar Issue

Issue: Modally presented view controller does not move back up after in-call status bar disappears, leaving 20px ... (completed) }) } See Question&Answers more detail:os...

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

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306 views

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ios - How to express Strings in Swift using Unicode hexadecimal values (UTF-16)

I want to write a Unicode string using hexadecimal values in Swift. I have read the documentation for String ... Characters and Strings work.) 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 - Animating/Moving views under usage of Autolayout

I want to move a view from one postion to another, I can implement it using self.view.center = CGPointMake(100, ... move a view to new position? See Question&Answers more detail:os...

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

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494 views

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ios - Smart app banners do not appear after being closed on iPad with IOS7

In short, my team has a mobile site and an app in the appstore. We have added the meta tag to ... these dismissed smart app banners reappear? See Question&Answers more detail:os...

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

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654 views

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ios - Change width of a UIBarButtonItem in a UINavigationBar

I am creating a UIBarButtonItem and adding it to my navigation bar like so: (void)viewDidLoad { ... // Add the ... to have a width of 30 px? See Question&Answers more detail:os...

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

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548 views

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ios - Want to create a cool static UI but : "Static table views are only valid..."

I'm creating a view like: For this I'm trying to use a Storyboard in which I add 2 TableViews (both as ' ... instances How can I fix this 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 wants argument of #selector to be exposed to Objective-C

I have a Swift project where I want to attach a method to a UIButton's tap event. I have the following code ... Selector("method:") works fine. 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 - Correct handling of NSJSONSerialization (try catch) in Swift (2.0)?

arowmy init works fine in Swift < 2 but in Swift 2 I get a error message from ... /Conceptual/Swift_Programming_Language/ErrorHandling.html See Question&Answers more detail:os...

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

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444 views

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ios - Detect a Null value in NSDictionary

I have an NSDictionary that's populated from a JSON response from an API server. Sometimes the values for a key ... to be working in Swift. See Question&Answers more detail:os...

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

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445 views

1 answer

ios - Horizontal UIScrollView inside custom UITableViewCell - using IB Storyboard - Not scrolling

The main goal is to be able to scroll each row's content horizontally. I'm trying to do this with X ... that I overlooked something very basic. See Question&Answers more detail:os...

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

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312 views

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ios - Working with Live Photos in Playground

I've done a fair amount of searching the web, but I'm currently attempting to work with "Live Photos" in ... for download online. 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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397 views

1 answer

ios - How to display clickable links in UITextView

I am trying to display an attributed string in a UITextview with clickable links. I've created a simple test ... Thanks so much 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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423 views

1 answer

ios - UIButton does not work when it in UIScrollView

My structure of views: UITableView UITableViewCell UIScrollView CustomView UIButton The problem is UIButton doesn't work when ... for any help! See Question&Answers more detail:os...

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

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441 views

1 answer

ios - Adding Convenience Initializers in Swift Subclass

As a learning exercise I am trying to implement a subclass of SKShapeNode that provides a new convenience initializer ... am I doing 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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469 views

1 answer

ios - Set image and title for bar button item?

I currently have a custom navigation controller with bar button items that are simply text buttons. Is it possible to ... action: "Pressed:") } See Question&Answers more detail:os...

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

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1.1k views

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ios - Get pixel data as array from UIImage/CGImage in swift

I have an app so far that allows the user to free draw (like a sketch pad) on a UIImageView element. I want ... easy way to do this in Swift? See Question&Answers more detail:os...

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

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598 views

1 answer

ios - The advertisingIdentifier and identifierForVendor return "00000000-0000-0000-0000-000000000000"

I've implemented this methods to get advertisingIdentifier and identifierForVendor: - (NSString *) ... correct identifiers) See Question&Answers more detail:os...

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

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342 views

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ios - UIImagePickerController crashes app | Swift3, Xcode8

FYI: I′m new to Swift so this might be a really simple problem but I just can′t figure it out. I ... , enable_oversize: 0, privacy_setting: 0 See Question&Answers more detail:os...

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

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629 views

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ios - Method load() defines Objective-C class method 'load', which is not permitted by Swift 1.2

I'm using Parse and I'm creating a PFObject subclass conforming to the protocol PFSubclassing! It was working all fine, ... yet? How can I fix? 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

1 answer

ios - How to disable no inverse relationship warning for CoreData in Xcode 4.2?

There was a MOMC_NO_INVERSE_RELATIONSHIP_WARNINGS setting on Xcode 3 but I cannot find it in Xcode 4.2 and trying ... it for various reasons. See Question&Answers more detail:os...

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

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410 views

1 answer

ios - App getting crash when click on GoogleSignIn button

I am using Google Sign-In SDK 4.0.1. When I press googleSignInButton then app will be crash. And gave below ... the solution. Why it is crashed? See Question&Answers more detail:os...

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

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441 views

1 answer

ios - Could not load the "" image referenced from a nib in the bundle with identifier

when I load my application it shows a warning message that "Could not load the "" image referenced from a nib ... it still shows that warning. See Question&Answers more detail:os...

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

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421 views

1 answer

ios - NEHotspotHelper annotations not appearing

We tried out the new NetworkExtension API. We were successful in recreating all the steps in our app. But, ... understand what we are missing ? See Question&Answers more detail:os...

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

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279 views

1 answer

ios - SwiftUI: NavigationDestinationLink deprecated

After installing Xcode 11 beta 5 this morning, I noticed that NavigationDestinationLink was deprecated in favor of ... supposed to use this. See Question&Answers more detail:os...

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

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443 views

1 answer

ios - How to insert 40000 records fast into an sqlite database in an iPad

I want to insert 40000 records that i get from a web service into a sqlite database in my iPad app. I ... sqlite3_close(database); return 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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294 views

1 answer

ios - Dynamic height for static table cells with wrapping labels?

My text is two lines long in portrait mode. When I switch to landscape mode, it fits into a single line ... or switches the focus as appropriate See Question&Answers more detail:os...

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

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329 views

1 answer

ios - Fixed header to UITableview?

I've got a UITableView that I'd like to stick a 44px subview on top of. I tried tableViewHeader, but that ... any help you guys can provide. See Question&Answers more detail:os...

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

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