Recent questions tagged iOS

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ios - Swift: How to execute an action when UITabBarItem is pressed

Currently I have a Tab Bar Controller that is connected to a tableview controller. I'm trying to go to the ... action when the item is 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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982 views

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ios - UITextView lineSpacing cause different cursor height between paragraph lines

I'm using NSMutableParagraphStyle in my UITextview for adding linespace between each row text. When I type ... : paragraphStyle}]; See Question&Answers more detail:os...

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

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467 views

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ios - Why is UIScrollView leaving space on top and does not scroll to the bottom

I am new to objective-C programming. I am using UIScrollView with some labels, image and text view on it. ... be missing something very simple. See Question&Answers more detail:os...

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

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350 views

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ios - How to fix Failed to fetch default token error?

I am getting this error after installing in iphone. See Question&Answers more detail:os...

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

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557 views

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ios - Convert String to NSURL is return nil in swift

I am trying to convert a String to NSURL and my code for that is Below: var url = "https://maps.googleapis ... what is wrong with my first case? See Question&Answers more detail:os...

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

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507 views

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ios - @Binding and ForEach in SwiftUI

I can't undertand how to use @Binding in combination with ForEach in SwiftUI. Let's say I want to create a list ... a way to solve this issue? See Question&Answers more detail:os...

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

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411 views

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ios - How can I programmatically find Swift's version?

I know I can find the version of Swift I'm running right now reverting to a Terminal and typing: ... but rather prefer some simpler solution See Question&Answers more detail:os...

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

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518 views

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ios - Return from initializer without initializing all stored properties

I have a simple class like this. public class User { let id: Int let firstName: String let lastName: String let ... and how can I resolve 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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348 views

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ios - Xcode 5 crashes -- Xcode quit unexpectedly

Xcode 5 from the App Store crashes when I select any file in the Project Navigator or when I try ... start_wqthread + 13 Thread 16: 0 libsystem_kernel.dylib 0x00007...

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

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343 views

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ios - Swift - Downloading video with downloadTaskWithURL

I'm downloading a video thanks to downloadTaskWithURL and I'm saving it to my gallery with this code : func ... create data from file (null) See Question&Answers more detail:os...

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

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369 views

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ios - Swift - Coredata Migration - Set new attribute value according to old attribute value

One of my current core data entities - Entity1 - has a Boolean attribute called isSaved. In the new core ... make my planned migration 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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355 views

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ios - NSTimer not fired when uiscrollview event occurs

I have a UIImageView placed in UIScrollView, Basicly this UIImageView holds very big map, and created animation on a ... forKey:@"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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371 views

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ios - UIVisualEffectView with mask layer

I am trying to blur a MKMapView while also displaying a circle mask above it. To better visualize what I mean ... order to solve this problem. See Question&Answers more detail:os...

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

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578 views

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ios - iOS5 Images disappear when scrolling with webkit-overflow-scrolling: touch

I had previously been using iScroll plugin but wanted to drop it for the native behaviour. The initial implementation ... this can be seen here See Question&Answers more detail:os...

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

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473 views

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ios - application:didReceiveRemoteNotification:fetchCompletionHandler Not Called

It appears the function application:didReceiveRemoteNotification:fetchCompletionHandler is not called when the app has been ... background mode? 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

1 answer

ios - Autolayout problems with iOS8 with code that works fine on iOS7

I'm in the midst of developing an app for the iPhone and iPad. It supports iOS6 and iOS7 and it uses auto ... to what might be the issue here? See Question&Answers more detail:os...

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

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636 views

1 answer

ios - Fade out scrolling UITextView over image?

I'm looking to fade out a scrolling UITextView over a background image, something similar to the gradient at the ... how I might achieve 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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300 views

1 answer

ios - UITextField Autocomplete?

I am trying to figure out if there is a way to implement an autocomplete functionality in a UITextField for specific ... . How to 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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280 views

1 answer

ios - Retrieving current local time on iPhone?

I'm looking to get the current hour and minute on a user's iPhone for display in an app that doesn't show the ... there a simple way to 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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301 views

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ios - UITableView with two custom cells (multiple identifiers)

I am trying to put a cell as a space between each cell - which will be hidden by setting alpha = 0. In my ... the actual cell } return cell; } See Question&Answers more detail:os...

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

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733 views

1 answer

ios - Class is implemented in both. One of the two will be used

I have a project that has a dependency (installed via CocoaPods) using SocketRocket and have imported a static ... source. Any recommendations? See Question&Answers more detail:os...

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

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320 views

1 answer

ios - Cannot assign to property in protocol - Swift compiler error

I'm banging my head against the wall with the following code in Swift. I've defined a simple protocol: protocol ... - what 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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386 views

1 answer

ios - Programmatically get a Storyboard ID?

Trying to see if a UIViewController or UIView can identify its Storyboard ID. So was hoping for: UIViewController * ... this is even possible? See Question&Answers more detail:os...

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

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476 views

1 answer

ios - Crashlytics is not sending Crash report from iPhone

I've setup the Crashlytics in my one iOS application and installed the application on a real device. My Crashlytics ... , where is the problem? See Question&Answers more detail:os...

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

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436 views

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ios - How to write a data in plist?

I have followed this answer to write data to the plist How to write data to the plist? But so far my ... so any help would be appreciated. See Question&Answers more detail:os...

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

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307 views

1 answer

ios - HTML Format in UITextView

i'm quite new to iOS Development and right now working on an app which receive some kind of JSON Data. ... right way? Thanks in advance AR4G4 See Question&Answers more detail:os...

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

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332 views

1 answer

ios - UITextView cursor below frame when changing frame

I have a UIViewCOntrollerthat contains a UITextView. When the keyboard appears I resize it like this: ... CGContextStrokePath(context); } See Question&Answers more detail:os...

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

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403 views

1 answer

ios - rotate a UIView around its center but several times

I'm trying to rotate some UIView around its center, so the simple code goes something like (in pseudocode): [ ... , any help appreciated! --t See Question&Answers more detail:os...

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

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