In this post, we will see how to save a list of objects into UserDefaults. First of all, we create a new Swift project and we add a Struct called Person: [PERSON.SWIFT] Then, we define a Class called People, used to save and load data from UserDefaults: [PEOPLE.SWIFT] Now, we create a SwiftUI View file… Read More »
Swift – Class (Part I) MULTIPLE INITIALIZERS If we run this code, these will be the results: DEINITIALIZERDeinitialization is a process used to deallocate the memory space before a class instance deallocated. The ‘deinit’ keyword is used to deallocate the memory spaces occupied by the system resources. If we run this code, these will be… Read More »
In this post, we will see how to use Struct in Swift.But first of all, what is a Struct?:From Apple web site: “Use structures to represent common kinds of data. Structures in Swift include many features that are limited to classes in other languages: They can include stored properties, computed properties, and methods. Moreover, Swift… Read More »
In this post, we will see how to use Throwing functions to handle errors in our code. We start opening Xcode and we create a Playground file called Errors where, we will define a simple method “Divide” to divide two number greater than 1: If we run the code, this will be the result: The… Read More »
In this post, we will see how to consume a Rest API in SwiftUI.We will use a Rest API that it will get us the list of the annual holiday in Italy for the 2022. We open Xcode and we create a new iOS app called TestWebAPI where, we will define our MVVM components: [MODEL… Read More »
In this post, we will see how to implement MVVM pattern in SwiftUI.But, what is MVVM pattern?From wikipedia:“Model–view–viewmodel (MVVM) is a software architectural pattern that facilitates the separation of the development of the graphical user interface (the view) – be it via a markup language or GUI code – from the development of the business logic or back-end logic (the model) so that the view is not dependent on any… Read More »
In this post, we will see how to display an Enum in a Picker.First of all, we start creating a new project called ViewEnum where we will add a file called LstCars, used to define an Enum consisting of a list of car brands: [LSTCARS.SWIFT] Finally, we define a Picker in the file ContentView where… Read More »
In this post, we will see how to implement an Alert in SwiftUI. We create a project called AlertTest and add this code in the file ContentView: [CONTENTVIEW.SWIFT] This is all and now, if we run the application, this will be the result:
In this post, we will see three tips that might help us to create buttons in our applications. First of all, we open Xcode, we create an iOS project called TestButton and we add three buttons: Then, we create a new Swift file called ButtonStyleCustom where we will define the style that we will use… Read More »