Building & Running SwiftUI Apps in Xcode

Written by Team Kodeco

When you create a new SwiftUI project in Xcode, you start with a simple SwiftUI view. For instance, Xcode might generate a ContentView like the one in our “Hello World” example:

struct ContentView: View {
  var body: some View {
    Text("Hello, world!")
      .padding()
  }
}

To build and run this app, click the Play button in Xcode’s toolbar or press Command-R. This compiles the code and launches the app in the simulator or a connected iOS device, selectable from the drop-down next to the Play button.

Your preview should look like this:

Upon a successful build, you should see “Hello, world!” displayed on the device or simulator screen:

If you encounter build errors or warnings, Xcode’s debug console provides detailed information. To stop the app, press Command-. or click the Stop button in the toolbar.

This simple process of building and running your app is the first step towards more advanced development tasks with SwiftUI.