In this demo, we will be using PDFKit to View and Annotate PDF file. Let us start by selecting a Single View App template and name the project as PDFDemo. For this demo, we will be using a PDF file “TheWakingLights.pdf” and this can downloaded from the github project folder. Now drag and drop this […]
Tab Bar Controller with WebView
In this article, we will see step by step instruction on working of Tab Bar Controller, UIWebView and Activity Indicator by loading couple of web pages using UIWebView in two different Tabs. Tab Bar Controller Tab Bar Controller is used for organizing list of View Controllers by having seperate tabs for each View Controller. Check […]
CoreData tutorial in Swift 5 using NSFetchedResultsController
Let us see an example TaskManager app using CoreData written in Swift Programming language. This app provides the following functionality Allow users to enter new task Update existing task delete task You can download source code for this project from Github. If you are familiar with user interface then move on to the Core Data […]
Storyboard, Scene and Segue
Storyboard in iOS is helps you to design the user interface of your App. A storyboard can contain one or more Scenes (View Controllers) and the connection or relationship between two scenes are known as Segue. This is how a typical storyboard with Scenes and Segue look. The above example storyboard contains two scenes, first […]
Get your current address in Swift (Swift 5)
In this Swift tutorial, we will see the steps required for using CoreLocation framework and retrieve the latitude and longitude of the location. Then use the CLGeocoder to reverse geocode the latitude and longitude details. This is a very basic tutorial that retrieves the location details on tap of a button and displays the information […]
NSUnknownKeyException – this class is not key value coding-compliant for the key
NSUnknownKeyException – this class is not key value coding-compliant for the key common error that most of the Swift beginners would face during the learning period. Terminating app due to uncaught exception ‘NSUnknownKeyException’, reason: ‘[<Handbook.StudentEntryController 0x78f948a0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key nametxt.’*** First throw call stack:( 0 CoreFoundation 0x02316a14 […]
Swift – WebView demo
Updated for Swift 5In this short tutorial, we will see an example in Swift programming language using UIWebView. The WebView will load a webpage and provide option to refresh, stop, go back and go forward. This tutorial should give a brief overview on how to declare IBAction, IBOutlets and use Objective-C classes (NSURL and NSURLRequest) […]
Value for SWIFT_VERSION cannot be empty.
This error occurs when the Swift version is not specified under Swift Compiler Languge for your project. All you need to do is, Navigate to Build Settings -> Swift Compiler Language, from the drop down specify the Swift version.