Swift

Great Reads

MVVM-B - B from Business logic

by Paulo Zemek

Mistakes that can be made while using MVVM and how to overcome them

Pwnage Checker - An iOS App Built Using Swift

by Vince Chan

Pwnage Checker is an iOS app that allows users to check whether an account has been compromised in a known data breach

iOS 12 Programming Fundamentals with Swift: Intro & Chpt1

by raddevus

Learn to create iOS apps using Xcode while you learn Swift. (If you've ever wanted to see iOS app dev in action, take a look at the screenshots.)

Tree View in Swift For iOS

by pgmr_64804

Tree View in Swift for iOS that is easy to implement and use

Latest Articles

iOS Cocoa Layout - The Difference between Nib and Xib

by Serhii Krotkykh

On easy example shown how to implement UIKit and SwiftUI TableView auto resizable cells and explained difference between Nib and Xib, how to load nib file and what exactly owner parameter of the load nib file method.

Result Builder in Swift for MVVM Pattern

by Serhii Krotkykh

Example of using result builder for the MVVM pattern

How to Add Live Activity to Your Existing Project - Part I

by Dearich

First part of the ultimate guide on how to add a Live Activity feature to your project

MVVM-B - B from Business logic

by Paulo Zemek

Mistakes that can be made while using MVVM and how to overcome them

All Articles

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Swift

"Swift or Objective-C?" that is here the Question!

5 Oct 2014 by KarstenK

Some toughts whether to prefer Objective-C or Swift.

Objective-C

Swift

iOS

Apple

A Natural Programming Method - Programming with Natural Language

30 Oct 2014 by Ui-Sing So

The method doesn't replace existing Computer Language. Natural Language and Computer Language have to cooperate with each other.

A Set of Swift Standard Library Classes Equivalent to Some C++ STL Classes

23 Nov 2019 by Zhaohui Xing (Joey)

Swift classes for algorithm, including single linked list class, stack class, queue class

A simple sql questions

22 Apr 2015 by ankur1163

I am making login page. Now, when i put username, password, it keeps rotating and doesnt do anything. I started it in debug mode and saw that it doesnt loop through code inside while statement>>>>>>>>>>>>>>>>>while(rdr.Read()) { int RetryAttempts =...

Swift

ASP.NET4

A simple sql questions

22 Apr 2015 by MdOK

Put a if condition outside the while loop and check the 'HasRows' property of the reader object like 'if(rdr.HasRows)'. By doing this you will make sure that the while loop will be executed only if there are rows in reader.

Swift

ASP.NET4

A simple sql questions

22 Apr 2015 by Abhinav S

Trywhile (reader.HasRows){ //Code reader.NextResult();}

Swift

ASP.NET4

An instance of nsfetchedresultscontroller requires a non-nil fetchrequest and managedobject context in iOS 10

10 Apr 2017 by Majid99

The code work good when I was using Xcode 7.3 with iOS 9 but when I migrated to Xcode 8 using swift 3 ,the code below show me that runtime error.still finding a solution for itclass TableViewController: UITableViewController,NSFetchedResultsControllerDelegate,UISearchResultsUpdating...

An instance of nsfetchedresultscontroller requires a non-nil fetchrequest and managedobject context in iOS 10

10 Apr 2017 by Surya_Narayan

It feel like context is not properly set . Please try let ad = UIApplication.shared.delegate as! AppDelegate let context = ad.persistenceContainer.viewContext

Application crashing after updating app from playstore. But not crashing for fresh installations.

6 Sep 2021 by OriginalGriff

We really can't help you: we have no access to your code or any idea what it is doing. So it's going to be down to you - and the chances are you'll have to fall back to old-school debugging: manual logging. If you can get it to fail under the...

Swift

Xcode

iOS

ASN 1 Decoder in Swift

23 Aug 2015 by paulortiz

Hi Guys,We are currently in the process of migrating our codes from Javascript to Swift with Objective C supported libraries. Our encryption algorithms was written using Javascript, and I found out that we are using ASN1 structures. I was wondering if any of you knows any ASN1 libraries that...

ASN 1 Decoder in Swift

24 Aug 2015 by KarstenK

Swift isnt so wide spread now and here, so you better to Objective-C. My tip would be interesting approch to wrap OpenSSL into Xcode.The professional software from Chilkat has also Swift Example.Lastly I found that ASN1C on Github.I really would like to hear from you how you solve...

ATS configuraion on node.js with express.js

17 May 2018 by rikidev

Goodmorning I have a node.js server that must receive json calls from a node.js application that uses express to manage routers, the ios application makes calls to routers passing json values! My problem is that I can not configure the apple ATS! How can I do? below I entered both the code and...

Swift

Node.js

HTTPS

Automatically back navigation perform when parent view updates in swiftui iOS

14 Jun 2021 by Abbas Gujjar

Suppose we navigate to child view and when the Parent View updates then automatically back navigation performs up to Parent View. Can we disable this Behaviour? What I have tried: I have a list of card views and when I click on one of them...

Swift

Xcode

iOS

Candidate Screening with a Programming Assignment

19 Mar 2017 by Will J Miller

Programming tests are frequently used to screen job applicants. This article describes one problem given by a large modern technology company and its solution in swift.

Catching the Bug… Server Side Swift

21 Aug 2016 by Dennis E White

Catching the bug… Server Side Swift

Swift

change language from English to Arabic

15 Apr 2015 by Member 11611871

I want to know the code for change the language from English to Arabic in Label or Button!this is for xcode6 swift

Swift

Xcode

change language from English to Arabic

15 Apr 2015 by Maciej Los

Please, read these:Localizing Your App[^]Let's localize your iPhone app![^]

Swift

Xcode

Coder Interview: Val Polouchkine - Developer Advocate

30 Mar 2016 by CodeProject, Val Polouchkine

Welcome to our continuing series of CodeProject interviews in which we talk to developers about their backgrounds, projects, interests and pet peeves. In this installment we talk to Val Polouchkine, a Developer Advocate for Twitter.

Compression of an image on an iPhone like on whatsapp

20 Aug 2018 by Member 13955667

I'm trying to find an image compression algorithm in the Swift programming language, as in the WhatsApp messenger. In the programming language Java under OS Android I found quickly, and under the platform iOS have difficulties. Here is the image compression algorithm for Android: public...

Swift

iOS

compression

Compression of an image on an iPhone like on whatsapp

20 Aug 2018 by Patrice T

Quote: This algorithm compresses the image to 100 KB. No, this code do not compress the image to given size, it downscale the image. The reduced size is only a secondary effect. Quote: I'm trying to find an image compression algorithm You are not looking for a compression algorithm jpeg images...

Swift

iOS

compression

Connect to database inswift

2 Mar 2015 by Member 11491281

Is there any way to connect to your database in swift without JSON or any others frameworks

Swift

database

Convert JSON into swift classes

18 Oct 2017 by fmikele

There is a very useful library in Android development (RETROFIT2) to convert JSON into Java classes in one step. Is there a similar library in Swift to convert JSON to Swift classes? Thank you What I have tried: import Foundation let data: Data // received from a network request, for example...

Swift

JSON

core data swift xcode 6 question

10 Jun 2015 by Member 11611871

I'm trying to display an items in the table but the app is saved in the core data without displayed can anyone know what the problem here because it's doesn't show that the app have any problem.override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { // Get the...

Swift

Xcode

iOS

core data swift xcode 6 question

19 Sep 2015 by HRamesh

make fallowing changes :1. var nItem: ItemList = frc.objectAtIndexPath(indexPath!) as! ItemList &2. In viewController.swift file var nItem : ItemList = nilThat will fix

Swift

Xcode

iOS

Could not cast value of type '__nscfnumber' (0x1b4520df0) to 'nsstring'

27 Apr 2017 by Member 13157880

let uid = FIRAuth.auth()?.currentUser?.uid let ref = FIRDatabase.database().reference().child("users").child((uid)!) ref.observeSingleEvent(of: .value, with: { snapshot in if let dictionary = snapshot.value as? [String:...

Swift

Xcode

iOS

Could not cast value of type '__NSCFString' (0x103c93c50) to 'NSNumber' (0x103535b88). Error

15 Sep 2015 by Member 11360293

I created an SQLite table with a row of id integer PRIMARY KEY. I used this tutorial to integrate SQLite with my app. I'm trying to add that to an array of Ints. Here's my code:let all = "select id from \(self.tableName)"let fullArray = self.dbManager.loadDataFromDB(all)for...

Could not cast value of type '__NSCFString' (0x103c93c50) to 'NSNumber' (0x103535b88). Error

15 Sep 2015 by KarstenK

your type cast from string to int is the problem. You cant use a type cast to extract the numeric value from a string object. You must convert it.I am not so fit on Swift but code like this should do the job.currentObject[0]!.toInt() //Swift 1.0let i:Int? = Int(currentObject[0]!) //...

Create a grouped table view

26 Oct 2014 by Member 11181364

Hi,I have been looking for an example of how to create a grouped TableView in Swift but have had no luck.. I am working on a project to create a Categories Page and currently have a working search bar as well as the sub-categories listed in a TableView.. I'd like to be able to break these...

Swift

Xcode

Developing a Private Network Connection iOS App Exploring OpenVPN Protocol

29 Jun 2021 by Dener Araújo, André Marcos (Advisor)

A Mobile Application Development for a Private Network Connection on iOS Platform Using Prococol OpenVPN

Difference between enterprise, organisation, individuals Apple id ?

6 Apr 2018 by Prakash Manikkam

i need to distribute my app i have to purchase the developer account right? There is three type of accounts (Enterprise, Organisation, Individuals) So what is the difference between these accounts , limit of client and please advice me which account is better What I have tried: I Try to...

Swift

Xcode

iOS

Difference between enterprise, organisation, individuals Apple id ?

6 Apr 2018 by OriginalGriff

Quote: Difference between enterprise, organisation, individuals Apple id ? See here: Choosing a Membership[^] Which one is "better" depends on what kind of company you are, and what you are plannign on doing.

Swift

Xcode

iOS

Display Activity Indicator with Overlay

5 Dec 2015 by Vince Chan

How to display activity indicator with overlay

Does unifiedcontacts(matching:keystofetch:) return only unified contacts and leave out non-unified contacts?

16 Nov 2021 by ShinehahGnolaum

When I use the Contacts Framework with Swift for iOS 15 using Xcode 13, when I use CNContactStore instance method unifiedContacts(matching:keysToFetch:), what happens to those CNContact objects that are not linked with any other CNContact...

Swift

iOS

During fights I have blackouts

21 Sep 2016 by OriginalGriff

Completely the wrong site - this is for development and coding questions.I'd suggest you talk to your parents or doctor.

Swift

Dwg files in aplication

24 Aug 2018 by kamil87

Hello everybody:) It's my first post so I would try describe my description the best how I can . Is it possibie to create aplication(web or mobile) where I can input *.dwg file and modify it(change something on it or put any comment)? I have read that there are aplication based on AutoCad...

Error in wireguard-Apple --> building and integrate for iOS and macos

13 Sep 2023 by Pravin TS

I am trying to integrate WireGuard for iOS and macOS in Xcode, the build process is success, but the integration shows error,although I had followed the procedures said in...

Expandable table view cell in xcode: how can I add text labels for the user to edit?

11 Jul 2017 by Member 13304726

I am fairly new to Xcode and Swift, but am trying to create an app. My goal is that I have an Expandable/Collapse TableView. The expandable cell (the subcell of the main cell) will have 2 text fields (one on the right and one on the left) where the user can input information using the keyboard....

Swift

Xcode

iOS