SimpleScores

SimpleScores

SimpleScores is a score tracking app written in SwiftUI, saving data using Codable.

Understanding the code

All the data is accessed using the ViewModel class, which is created inside SimpleScoresApp and shared everywhere. This class is responsible for loading and saving the data using Codable and the app’s documents directory, and also adding and deleting data while the app is running.

Things to watch out for:

• ScoreRow is created using bindings to the shared view model class, meaning that any change the user makes is automatically stored in the view model and written out to disk.
• Screen space is maximized by providing ScoreRow with custom list insets and allowing its text field to resize down to 75% of its regular font size.
• Data in ViewModel is automatically saved after 5 seconds of not being changed, or if the user exits the app.
• The app uses preferredColorScheme(.dark) in SimpleScoresApp to ensure dark mode is used everywhere.
• Using plain list and button styles in ContentView gives us more control over the exact look and feel of this screen.
• There are several important accessibility modifiers in ScoreRow, all of which combine to ensure that the app works well with assistive technologies such as VoiceOver.

Credits

SimpleScores was made by Paul Hudson as part of the Simple SwiftUI project. It’s available under the MIT license, which permits commercial use, modification, distribution, and private use.