How do I handle events and user input in my Mac application using SwiftUI.

Photo by John Schnobrich on Unsplash

SwiftUI is the latest and greatest way to build user interfaces for Apple’s platforms. It’s a declarative framework, which means you describe the end result you want, and the framework takes care of the details of updating the UI when things change. In this article, we’re going to take a deep dive into how to handle events and user input in your Mac app using SwiftUI.

First things first, let’s talk about events. An event is something that happens in your app, like a button being tapped or a text field being edited. In SwiftUI, you can handle events using the onTapGesture() and onEditingChanged() modifiers.

The onTapGesture() modifier is used to handle taps on a view. For example, let’s say you have a button that you want to perform an action when it’s tapped. You can use the onTapGesture() modifier to attach an action to the button like this:

Button(action: {
    print("Button Tapped!")
}) {
    Text("Tap Me")
}.onTapGesture {
    print("Button Tapped!")
}

In this example, when the button is tapped, the “Button Tapped!” message will be printed to the console twice. This is because the action attached to the button will be called when the button is tapped, and the closure passed to the onTapGesture() modifier will also be called.