Recent questions tagged iOS

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ios - Prevent dismissal of modal view controller in SwiftUI

At WWDC 2019, Apple announced a new "card-style" look for modal presentations, which brought along with ... with existing SwiftUI constructs? See Question&Answers more detail:os...

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

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254 views

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ios - Hiding the tabbar and removing the space

Is there a way to hide tabbar and remove that space left (around 50px) ? I tried self.tabBarController?.tabBar. ... luck. I see blank space. See Question&Answers more detail:os...

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

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470 views

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ios - Screenshot for AVPlayer and Video

I am trying to take a screenshot of an AVPlayer inside a bigger view. I want to build a testing framework ... as the subview of other views 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 - UITextView: Disable selection, allow links

I have a UITextView which displays an NSAttributedString. The textView's editable and selectable properties are both ... for selecting text? See Question&Answers more detail:os...

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

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377 views

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ios - Disabling automatic scrolling of UITableView when editing UITextField inside UITableViewCell

I'm using custom UITableViewCells inside my UITableView. Each of these UITableViewCells is pretty high and contains a ... can I do 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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525 views

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ios - Minimum and maximum date in UIDatePicker

I want to get the minimum and maximum date from a date picker, but minimum date should be "- 18" of the ... this integer to my date format.. See Question&Answers more detail:os...

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

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317 views

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ios - How to localize the images in Images.xcassets?

We can localize an image in the File Inspector using Localize... like this: Then we can get this: But ... these images in Images.xcassets? See Question&Answers more detail:os...

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

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432 views

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ios - Black screen after adding SceneDelegate and updating Info.plist

I am currently getting a blank screen with Xcode 11, Target iOS 13.0 (the app works fine with ... .rootViewController = newViewcontroller } } See Question&Answers more detail:os...

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

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284 views

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ios - Correct implementation of parent/child NSManagedObjectContext

My app sometimes inserts objects into the managed object context that are not meant to necessarily be saved. ... of these issues previously. See Question&Answers more detail:os...

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

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181 views

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ios - Hiding UITabBar when pushing a UIView

I have a UITabBarController where the default view controller is a UINavigationController. I want to be able to ... ? 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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486 views

1 answer

ios - How can I restrict special characters in UITextField except dot and underscores?

How can I restrict special characters in a UITextField except dot and underscores? I have tried the code snippet below, ... { return YES; } } See Question&Answers more detail:os...

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

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1.7k views

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ios - Class is implemented in both, One of the two will be used. Which one is undefined

I have an issue with dependencies included in Cocoapods. I have a Framework project (MyFramework target), which also ... be the reason for 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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678 views

1 answer

ios - How can I set a UITableView to grouped style

I have a UITableViewController subclass with sections. The sections are showing with the default style (no rounded ... up with an answer. See Question&Answers more detail:os...

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

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215 views

1 answer

ios - How to convert an Int to Hex String in Swift

In Obj-C I used to convert an unsigned integer n to a hex string with NSString *st = [NSString ... into Swift language, but unsuccessfully. See Question&Answers more detail:os...

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

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166 views

1 answer

ios - upload image from iphone to the server folder

I found few snippet from online to upload image from iphone to the server folder, it's showing to use server side ... can how this can be done 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

1 answer

ios - Really cool way to create custom UITabBar for iPhone app?

I am doing a lot of researching lately about how to get a different looking with nice effects UITabBar on my ... be done in Interface Builder. See Question&Answers more detail:os...

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

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280 views

1 answer

ios - iOS7 iPad Landscape only app, using UIImagePickerController

I believe this is a common issue and many answers don't work anymore, many just partial, if you are ... , and shouldAutorotate returns YES". See Question&Answers more detail:os...

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

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337 views

1 answer

ios - Wrapping Text in a UITextView Around a UIImage WITHOUT CoreText

Is there a way to wrap text from a UITextView around a UIImage without using CoreText? I have been playing around ... rather stay out of it. See Question&Answers more detail:os...

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

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407 views

1 answer

ios - Why am I getting ibtool failed with exit code 255?

All of a sudden I can't build my project. I get the following compiler error: /Applications/Xcode.app/Contents/Developer/ ... 4.6, iOS 6.1. See Question&Answers more detail:os...

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

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562 views

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ios - Find the tangent of a point on a cubic bezier curve

For a cubic Bézier curve, with the usual four points a, b, c and d, for a given value t, how to most elegantly find the tangent at that point? See Question&Answers more detail:os...

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

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285 views

1 answer

ios - Detect double tap on ipad or iphone screen using javascript

I'd like to detect if a user has double tapped on an ipad or iphone. Does a javascript-event exist which would provide this functionality? See Question&Answers more detail:os...

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

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265 views

1 answer

ios - UIApplication.registerForRemoteNotifications() must be called from main thread only

Xcode 9 (iOS 11) showing me an error/warning while registering for Push (remote) notification. Here is error message ... () How to resolve 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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394 views

1 answer

ios - KVO and ARC how to removeObserver

How do you remove an observer from an object under ARC? Do we just add the observer and forget about ... view controller's dealloc method. See Question&Answers more detail:os...

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

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330 views

1 answer

ios - Where to remove observer for NSNotification in Swift?

Where should I remove the observer for NSNotification in Swift, since viewDidUnload and dealloc() are unavailable? See Question&Answers more detail:os...

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

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199 views

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ios - IB_DESIGNABLE, IBInspectable -- Interface builder does not update

I have the following set of code: CustomView.h #import <UIKit/UIKit.h> IB_DESIGNABLE @interface CustomView ... User Defined Runtime Attributes. See Question&Answers more detail:os...

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

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176 views

1 answer

ios - How do you add an action to a button programmatically in xcode

I know how to add an IBAction to a button by dragging from the interface builder, but I want to add the action ... when I search it. Thank you! See Question&Answers more detail:os...

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

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284 views

1 answer

ios - How do you get an iPhone's device name

If you open Settings -> General -> About, it'll say Bob's iPhone at the top of the screen. How do you programmatically grab that name? See Question&Answers more detail:os...

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

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271 views

1 answer

ios - Change language of alert in banner of Push Notification

I am facing problem to change the language of alert in banner when push comes. Actually i am working on ... server whenever i change language? See Question&Answers more detail:os...

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

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