Performant, sleek and elegant.
I was looking at formatters provided by Foundation framework and this time I would like to put some attention on MeasurementFormatter. Like the name says, it is used for creating localized strings of some sort of measurements. Measurements are represented by a generic struct Measurement where the generic UnitType describes the unit represented by it. …
Continue reading "Measurement, Unit, Dimension, and MeasurementFormatter on iOS"
Many apps use Core Data for persistence and also need to import data from a server. Imported items typically have a unique identifier which can be used for identifying them. The count of imported items can be high therefore it is preferred to batch insert the items instead of adding them one by one. Core …
Continue reading "Importing items from network to a Core Data store"
I have been writing a new blog post at least every second week and therefore in 2020 I have published total of 27 blog posts. It is time to take a look back on the 2020 and see which blog posts were the most popular ones. I am just looking at the total count of …
UILabel supports displaying attributed strings with link attributes but what it does not support is allowing to tap on hyperlinks and opening those in Safari. An Alternative way is using an UITextView which does support opening hyperlinks but on the other hand it is a more heavy view component and therefore might not be the …
Just a couple of weeks ago I wrote about resizing images on iOS: Resizing UIImages with aspect fill on iOS. As I am currently building a macOS, iOS, watchOS app I realized that I need a multiplatform image resizer. As this app deals with full size photos then I need to resize those photos for avoiding …
Continue reading "CoreGraphics based image resizer for multiplatform apps in Swift"
A SwiftUI view showing buttons for taking a photo and opening photo album.
In model-view-view model (MVVM) architecture the view model observes the model and provides data for the view by transforming it when needed. When the user interacts with the view and changes the data in it then the view model's responsibility is to propagate those mutations back to the model object. Therefore, the important part in …
Continue reading "Observing a KVO compatible model in SwiftUI and MVVM"
Resizing images is an important topic when we need to display images which do not match with the intended display size. For example, rendering much large images in a small rectangle. UIImageView supports scaling images automatically but that becomes inefficient when dealing with larger images. In this blog post we'll take a look on how …
Continue reading "Resizing UIImages with aspect fill on iOS"
Jazzy is an excellent tool for generating API documentation for Swift and Objective-C projects. Let's take a look how to generate and publish API documentation in GitHub with Jazzy. Installing Jazzy Installation: sudo gem install jazzy Jazzy config file for a Swift package Configuration options can be passed into Jazzy directly with the command or …
Continue reading "Publishing API documentation in GitHub with Jazzy"
Wave shape with red button on top of it
