Recent questions tagged IOS

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ios - How to get the other devices' host name in the same wifi?

I found some iOS app which could scan the local network and list all the device information. I wonder how. Pic: See Question&Answers more detail:os...

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

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532 views

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ios - dynamically change UIKeyboards return key

I have two UITextfield the user enters his name into the first and email into the second. I would like to ... ? any help would be appreciated. See Question&Answers more detail:os...

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

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673 views

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ios - How to make custom MKPolyline in SWIFT with additional argument - color

Can any help me with making custom MKPolyline with additional argument Color? CustomPolyline.swift import Foundation ... Thanks for help. 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 - Use of 'self' in property access 'frame' before super.init initializes self

I have this code import UIKit class CardView: UIView { @IBOutlet var imageView: UIImageView! init(imageView: ... started learning 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 - What is the availability of NSNotFound?

This in-Xcode documentation for NSNotFound is quite confusing: It says "Available in iOS 2.0 through 8.4" and " ... on here, if it is? See Question&Answers more detail:os...

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

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556 views

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ios - UISearchController causes black screen Swift 2.0

I have a strange problem in iOS 9 with Swift 2.0. I added UISearchController in my tableViewController but it ... this problem ? 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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540 views

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ios - Firestore listener for sub collections

I have my Firestore setup in the following way: Channels [collection] ----> channelID ---> Messages [collection] - ... } This didn't work for me See Question&Answers more detail:os...

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

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735 views

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ios - Skaction.playsoundfilenamed crashes when repeat - sprite kit

I have a problem with sprite kit SKAction.playSoundFileNamed. In practice, after some time it is played correctly ... no longer generates crash See Question&Answers more detail:os...

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

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664 views

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ios - AutoLayout labels getting cut off on right side of screen

I'm trying to use Auto Layout for a custom Table View Cell in my app. I can't seem to get the ... all, thanks for the help everyone! See Question&Answers more detail:os...

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

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661 views

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ios simulator - iOS weird error: dyld: Symbol not found: __dealloc?

I suddenly getting the below error, which is not allowing any application to run in simulator. The app ... A/CoreFoundation Please suggest ! See Question&Answers more detail:os...

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

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563 views

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ios - SecKeyRawVerify and OSError -9809

I am using digital certificates to sign data files in my App. The code fragment below fails when the call to ... (size_t)[signature length] ); See Question&Answers more detail:os...

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

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588 views

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ios - AVCapture Session To Capture Image SWIFT

I have created an AVCaptureSession to capture video output and display it to the user via UIView. Now I want to be ... .image = data_image } } } See Question&Answers more detail:os...

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

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818 views

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ios - Get coordinates of multiple touches in Swift

So I've been messing around trying to get the coordinates of touches on the screen. So far I can get the ... and third, fourth...) touch? See Question&Answers more detail:os...

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

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580 views

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ios - NSAttributedString from HTML in the background thread

What I need is to create NSAttributedString objects from relatively big HTML strings and store them (NSAttributedString- ... not use WebKit? See Question&Answers more detail:os...

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

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694 views

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ios - CGAffineTransformInvert: singular matrix

I've been occasionally seeing the error message: CGAffineTransformInvert: singular matrix In the logging area of ... interfering with anything? See Question&Answers more detail:os...

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

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672 views

1 answer

ios - How to get IPhone's Public IP Address without using a third party url

For my project, i need to get the IPhone's Public IP address, there are so many examples available, which ... file, it generates Local IP See Question&Answers more detail:os...

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

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785 views

1 answer

ios - settings bundle not working on watchOS 2

This was NOT a problem on watchOS 1, but now on watchOS 2 I cannot read the values on the watch extension. ... are not sent back to iOS. See Question&Answers more detail:os...

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

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717 views

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ios - Update / change the rawValue of a enum in Swift

Taking the below enum for instance enum Name : String { case Me = "Prakash" case You = "Raman" } Can I ... ENUM Name.Last = "Benjamin" 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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624 views

1 answer

ios - setting date format for NSDateFormatter

I am trying to set the date format for something like "2011-04-21 03:31:37.310396". I ... dateFormatter dateFromString:stringFormOfDate]; Help? See Question&Answers more detail:os...

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

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653 views

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ios - NSKeyedUnarchiver error after renaming Xcode project

I just renamed my Xcode project and when I ran it I got this error: 2015-11-14 05:32:42.337 Buck ... renamed it again. So any suggestions? See Question&Answers more detail:os...

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

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778 views

1 answer

ios - How to find path of Bridging-Header.h - Swift, Xcode

Here I'm attaching a screenshot of created header file I have created a new header file in xcode and named it as ... find the path of the file? 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 - Where to update Autolayout constraints when size changes?

I have several UIViews laid out along the bottom of a containing UIView. I want these views to always be ... and similar methods are deprecated. See Question&Answers more detail:os...

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

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783 views

1 answer

ios - CMDeviceMotion returns 0 values for magnetic field

I am developing iOS app with compass functionality. I have tried to use CMMagnetometerData updates which give uncalibrated, but ... .z)") } } See Question&Answers more detail:os...

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

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593 views

1 answer

ios - Not getting didReceiveMemoryWarning when app is in the background

I'm noticing that my view controllers aren't getting their didReceiveMemoryWarning methods called when my application is in ... how do I tell? See Question&Answers more detail:os...

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

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746 views

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ios - AFNetworking 2.0 Send Post Request with URL Parameters

How do I send a POST request with AFNetworking 2.0 with all the parameters in the URL like such: http:// ... "Request failed: bad request (400) See Question&Answers more detail:os...

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

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753 views

1 answer

ios - CoreData predicate: string property length?

Say if I have an entity Fragment, it has an attribute 'text' which is a string, I want to query the list of ... I need to change it to? Thanks! See Question&Answers more detail:os...

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

0 votes

654 views

1 answer

ios - Selecting language of the keyboard for UITextField with secureTextEntry

I'm stuck with a problem of changing language for the password field. In my application I need to enter ... button to the secured textField? See Question&Answers more detail:os...

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

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868 views

1 answer

ios - How do I get around NSCocoaErrorDomain:257 when pulling a file from the Files app?

I'm trying to access a file to pull a copy into my app so that users can associate it with relevant information. ... that I wasn't aware of. See Question&Answers more detail:os...

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

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