![]() Xcode Previews now supports previewing iPad applications brought to the Mac.Selecting a SwiftUI preview in code now highlights the corresponding preview in the canvas, and vice versa.You can now copy, cut, paste, duplicate, and delete views directly within the Xcode Previews canvas.The Crashes Organizer now shows crash logs for universal purchase macOS apps.The Metal Frame Debugger now supports iOS and tvOS simulators. ![]() You can configure header cell fonts by subclassing NSTableHeaderCell and overriding the font property in code. Removed inspector support for configuring NSTableColumn header cell fonts to match the API.Added dynamic system gray colors to inspector color pickers.Make this choice using the Scheme Editor’s Options tab. You can now use the Terminal for standard I/O, instead of Xcode’s Console.You can inspect the Exception object in Variables View and find the backtrace of the original uncaught exception, if any, in the Debug Navigator. The exception reason now surfaces as an editor annotation.View debugging supports showing layers using the Show Layers menu item in the Editor menu.The view debugger now presents layout guides ( UILayoutGuide, NSLayoutGuide) and their referencing constraints.Building codeless kernel extensions with the new build system now requires you to set the GENERATE_KERNEL_MODULE_INFO_FILE build setting to NO.The default value may itself be an expression that contains build setting evaluations. If $(SETTING) is empty, this expression evaluates to ‘something’.If you choose to build your Mac Catalyst app with a custom bundle identifier that does not match your iOS app, you will not be able to distribute the app as a universal purchase. You can edit the bundle identifier of your app using the Signing & Capabilities tab in the Project Editor. Automatic signing in Xcode 11.4 supports building Mac Catalyst apps with a custom bundle identifier.When you create a new Mac Catalyst app, it will use the same bundle identifier as your iOS app. Universal purchase is enabled by default for new Mac Catalyst apps created in Xcode 11.4.If you have an existing project, edit its bundle identifier in the Project Editor. ![]() To distribute your macOS app as a universal purchase, specify the same bundle identifier as your iOS app in the Xcode template assistant when creating a new project. Xcode 11.4 supports building and distributing macOS apps as a universal purchase. ![]() Xcode 11.4 requires a Mac running macOS Catalina 10.15.2 or later. Xcode 11.4 supports on-device debugging for iOS 8 and later, tvOS 9 and later, and watchOS 2 and later. Xcode 11.4 includes SDKs for iOS 13.4, iPadOS 13.4, tvOS 13.4, watchOS 6.2, and macOS Catalina 10.15.4. ![]()
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