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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"
CoreData is Apple's object graph and persistence framework. It provides data sources for synchronising data with view. Let's take a look on how to use those data sources in SwiftUI views. Starting with NSFetchedResultsController what is used for list and collection views, after that observing NSManagedObject directly from SwiftUI view and lastly subscribing to managed …
Let's build a simple app using MVVM (model-view-view model) where every SwiftUI view has its own view model. It's going to be an app with two views: list of movies and add a movie view what utilises Form view. Added movies are stored in MovieStore which is shared by the two view models. We will …
One building block for navigating from one view to another is NavigationView which is a representation of UINavigationController in UIKit. This time, let's take a look on how to transition from one SwiftUI view to another one without NavigationView. AppFlowCoordinator managing choosing the view The idea is to have a root SwiftUI view with only …
Let's build a conversation view which shows a list of messages and has input text field with send button. Sent and received messages are managed by Conversation object. Conversation object manages a Session object which is simulating networking stack. This kind of setup allows us to look into how to propagate received messages from Session …
Continue reading "Creating chat view with Combine and SwiftUI"
