#Project statistics for xcode update#

As with the preview canvas, the running app on the device will update dynamically as changes are made to the code in the editor. The current version of the app may also be previewed on an attached physical device by clicking on the Preview on Device button (B). When in Live Preview mode, the button changes to a stop button which can be used to exit live mode.

#Project statistics for xcode simulator#

Xcode will then build the app and run it within the preview canvas where you can interact with it as you would in a simulator or on a physical device. To test the user interface in a running version of the app, simply click on the Live Preview button (A).

The preview toolbar (marked D in Figure 17-10 above and shown below) provides a range of options for changing the preview panel:īy default, the preview displays a static representation of the user interface. The view to which you have navigated will appear beneath the pinned view in the canvas and can be scrolled into view. The pin button (labeled C in Figure 17-10 above) pins the current preview to the canvas so that it remains visible on the canvas after navigating to a different view. This can be particularly useful if the layout from one file is dependent on or embedded in another view. Sometimes you may want the user interface layout for one SwiftUI file to appear in the preview canvas while editing the code in a different file. When a SwiftUI View file is selected from the project navigator, both the code editor and preview canvas will change to reflect the currently selected file. When building an app in Xcode it is likely that it will consist of several SwiftUI View files in addition to the default ContentView.swift file.

The size buttons (B) can be used to zoom in and out of the canvas. For the purposes of this chapter, use the multiplatform app option: Templates are also available for creating a basic app, a document-based app or a game project. Even if you plan to initially only target iOS the multiplatform option is still recommended since it provides the flexibility to make the app available on other platforms in the future without having to restructure the project. Selecting a platform-specific option will also provide the choice of creating either a Storyboard (UIKit) or SwiftUI-based project.Ī multiplatform project allows an app to be designed for multiple Apple platforms with the minimum of platform-specific code. Options are available to design an app for a specific Apple platform (such as iOS, watchOS, macOS, DriveKit, or tvOS), or to create a multiplatform project. When creating a new project, the project template screen includes options to select how the app project is to be implemented. From within this window, click on the option to Create a new Xcode project. If you do not see this window, simply select the Window -> Welcome to Xcode menu option to display it.

#Project statistics for xcode full#

The full book contains 64 chapters and over 560 pages of in-depth information. You are reading a sample chapter from SwiftUI Essentials – iOS 16 Edition.īuy the full book now in eBook (PDF, ePub, and Kindle) or Print format. When launched for the first time, and until you turn off the Show this window when Xcode launches toggle, the screen illustrated in Figure 17-1 will appear by default: Assuming the installation is complete, launch Xcode either by clicking on the icon on the dock (assuming you created one) or use the macOS Finder to locate Xcode in the Applications folder of your system. If you have not already installed this tool together with the latest iOS SDK refer first to the “Installing Xcode 13 and the iOS 15 SDK” chapter of this book. Starting Xcode 13Īs with all the examples in this book, the development of our example will take place within the Xcode 13.2 development environment. When working in SwiftUI mode, most of your time as an app developer will be spent in the code editor and preview canvas, both of which will be explored in detail in this chapter. When creating a SwiftUI project, Xcode appears and behaves significantly differently when designing the user interface for an app project compared to the UIKit Storyboard mode. When creating a new project, Xcode now provides a choice of creating either a Storyboard or SwiftUI-based user interface for the project.