Xcode 11 includes everything you need to create amazing apps and to bring your apps to even more devices. Take advantage of SwiftUI, an all-new user interface framework with a declarative Swift syntax. Start bringing your iPad app to Mac with just a click. And with support for Swift packages, Xcode 11 lets you share code among all of your apps or use packages created by the community.
SwiftUI
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Better apps. Less code.
Apr 22, 2018 Help Xcode 9.1 / 9.2 DMG File (self.iOSProgramming) submitted 1 year ago by PhantomBP Hi Everyone, i'm running on a Macbook air 10.12.6 and i need these lower version xcode dmgs as the latest versions require 9.3.
SwiftUI is an innovative, exceptionally simple way to build user interfaces across all Apple platforms with the power of Swift. Build user interfaces for any Apple device using just one set of tools and APIs. With a declarative Swift syntax that’s easy to read and natural to write, SwiftUI works seamlessly with new Xcode design tools to keep your code and design perfectly in sync. SwiftUI is truly native, so your apps directly access the proven technologies of each platform to beautifully implement everything users love about the Apple ecosystem.
Xcode 8 Dmg File
Declarative syntax. Write simpler code with a declarative Swift syntax that clearly states what your user interface should do.
Design tools. Drag and drop to construct or edit your interface. Quickly make changes to visual UI elements with pop-up inspectors.
Native on all Apple platforms. Your apps gain incredible native performance and take advantage of the proven technologies, controls, and user experiences of Apple platforms to feel fully integrated.
Live mode. See your design change instantly in one or many exact previews. Switch the design canvas to live mode to instantly interact with your running app in Xcode or on a connected device.
Bring your iPad App to Mac
Xcode makes it easy to get a huge head start on turning your existing iPad app into a native Mac app. Your Mac and iPad apps share the same project and source code, so any changes you make translates to both platforms. And your newly created Mac app runs natively, utilizing the same frameworks, resources, and even runtime environment as apps built just for Mac.
Swift and Swift Packages
Swift 5 is now built right into all Apple platforms and the binary interface for Swift is stable moving forward. Your apps will be smaller, download faster, and keep working as Swift continues to evolve.
Swift packages are integrated throughout all of Xcode 11, making it incredibly simple to use a package in your apps for Apple platforms. Just add a new package dependency to add an external package to your project., then clone the package from GitHub, Bitbucket, GitLab, or your own code host. Xcode checks the package dependencies and displays all the packages you use directly in the navigator.
It’s also easy to create your own packages to use with projects based on your own code, or to share with the world. Source code you put in these packages will be built into any apps that depend on the package, with support for all Apple platforms. Code in the package is still easy to debug, test, and use with source code management.
Dark Mode for iPhone and iPad
Dark Mode has been beautifully integrated throughout iOS, and Xcode 11 gives you powerful tools to easily support dark mode in your apps. Quickly switch your designs and previews between light and dark in Interface Builder, and preview both modes in SwiftUI, even side-by-side. Asset catalogs let you label assets and named colors with variants for light and dark. And you can switch your app in and out of dark mode while debugging. This is all done using controls within Xcode that only apply to your app, with no need to change your system settings.
Your Editor, Your Layout
Whether you prefer a single editor or split your windows into a precisely-arranged mosaic, Xcode 11 gives you total control over your coding area and the ability to split any editor pane. Editors can also show SwiftUI previews, live views of playgrounds, and a myriad of assistants. If you need to focus on just one file, you can click-zoom to maximize the pane, and return to exactly where you were before. The new minimap sidebar shows a birds-eye view of the open file, including highlights that make it easy to jump to the right place.
Your code looks better than ever with documentation comments with bold and italics rendered inline with your code. You can even inspect the differences in your current source edits compared to past versions, with a comparison view that updates as you type.
In-depth Testing
The updated Devices window lets you simulate your users’ environment, for example when your app is running in extreme heat or on a slow network. Test plans in Xcode 11 make it easy to automate a huge number of test and analysis steps, all to be run in parallel. For instance, you can select several sanitizer tools with conflicting build settings, and Xcode will run all the tests for you and automatically build all the versions you need.
Screenshots are now easy to automate with an API that saves screenshots to your results bundle during UI testing. Combined with testing your localized UI, it’s easy to take every screenshot you need to submit to the App Store, or to show your localization team.
With even better support for Xcode Server and other continuous integration tools, you can constantly test your app in hundreds of user scenarios, easily and efficiently.
Xcode is a complete developer toolset for creating apps for Mac, iPhone, iPad, Apple Watch, and Apple TV. Xcode brings user interface design, coding, testing, debugging, and submitting to the App Store all into a unified workflow.
Downloading and Updating Xcode
The current release of Xcode is available as a free download from the Mac App Store. The Mac App Store will notify you when an update is available or you can have macOS update automatically as it becomes available.
The latest beta version and previous versions of Xcode can be downloaded from the Downloads page. To download Xcode, simply sign in with your Apple ID.Apple Developer Program membership is not required.
To learn about the latest features and capabilities in Xcode, see What’s New in Xcode. For detailed information on updates in the latest released versions, including each beta release, see the Xcode Release Notes.
Using Xcode
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Get step-by-step guidance on how to use Xcode to build, test, and submit apps to the App Store.
Providing Feedback and Reporting Bugs
Your feedback goes a long way towards making Xcode even better. With Feedback Assistant, you can report issues or request enhancements to APIs and tools. Include detailed information about issues, including the system and developer tools version information, and any relevant crash logs or console messages. To provide feedback or ask questions, post your questions and comments on the Apple Developer Forums.
Submitting Apps to the App Store using Xcode
If you’re an Apple Developer Program member, Xcode provides an integrated workflow to prepare and submit apps to App Store. You should use the latest version of Xcode available on the Mac App Store to submit your apps, or when available, the latest GM seed release from the Downloads page.
Do not submit apps built using beta software, as beta versions of Xcode, Operating Systems, and SDKs are for development and testing only.
Invalid Private Key and Certificate Pairing
If you received an error message saying, 'Xcode could not find a valid private-key/certificate pair for this profile in your keychain.' This error message indicates that the Keychain Access application on your Mac is missing either the public or private key for the certificate you are using to sign your app.
This often happens when you are trying to sign and build your app from a different Mac than the one you originally used to request your code signing certificate. It can also happen if your certificate has expired or has been revoked. Ensure that your app’s provisioning profile contains a valid code signing certificate, and that the Keychain Access application on your Mac contains that certificate, the private key originally used to generate that certificate, and the WWDR Intermediate Certificate.
For instructions on how to resolve this and other code signing errors, review the Code Signing Support page.
Apple Security Updates
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For information on the security content of Xcode updates, visit the Apple security updates page.