Tools you’ll love to use. The Xcode IDE is at the center of the Apple development experience. Tightly integrated with the Cocoa and Cocoa Touch frameworks, Xcode is an incredibly productive environment for building apps for Mac, iPhone, iPad, Apple Watch, and Apple TV. Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, Apple TV, and Apple Watch. Xcode provides developers a unified workflow for user interface design, coding, testing, and debugging. The Xcode IDE combined with the Swift programming language make developing.
Welcome to Swift. Swift is a high-performance system programming language. It has a clean and modern syntax, offers seamless access to existing C and Objective-C code and frameworks, and is memory safe by default.
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. Automatic support for Dynamic Type, Dark Mode, localization, and accessibility means your first line of SwiftUI code is already the most powerful UI code you’ve ever written.
SwiftUI uses a declarative syntax so you can simply state what your user interface should do. For example, you can write that you want a list of items consisting of text fields, then describe alignment, font, and color for each field. Your code is simpler and easier to read than ever before, saving you time and maintenance.
This declarative style even applies to complex concepts like animation. Easily add animation to almost any control and choose a collection of ready-to-use effects with only a few lines of code. At runtime, the system handles all of the steps needed to create a smooth movement, and even deals with interruption to keep your app stable. With animation this easy, you’ll be looking for new ways to make your app come alive.
Xcode includes intuitive design tools that make building interfaces with SwiftUI as easy as dragging and dropping. As you work in the design canvas, everything you edit is completely in sync with the code in the adjoining editor. Code is instantly visible as a preview as you type, and any change you make to that preview immediately appears in your code. Xcode recompiles your changes instantly and inserts them into a running version of your app, visible, and editable at all times.
Drag and drop. Arrange components within your user interface by simply dragging controls on the canvas. Click to open an inspector to select font, color, alignment, and other design options, and easily re-arrange controls with your cursor. Many of these visual editors are also available within the code editor, so you can use inspectors to discover new modifiers for each control, even if you prefer hand-coding parts of your interface. You can also drag controls from your library and drop them on the design canvas or directly on the code.
Dynamic replacement. The Swift compiler and runtime are fully embedded throughout Xcode, so your app is constantly being built and run. The design canvas you see isn’t just an approximation of your user interface — it’s your live app. And Xcode can swap edited code directly in your live app with “dynamic replacement”, a new feature in Swift.
Previews. You can now create one or many previews of any SwiftUI views to get sample data, and configure almost anything your users might see, such as large fonts, localizations, or Dark Mode. Previews can also display your UI in any device and any orientation.
SwiftUI was built on decades of experience in creating the most innovative and intuitive user interfaces in the world. Everything users love about Apple ecosystems, such as controls and platform-specific experiences, is beautifully presented in your code. SwiftUI is truly native, so your apps directly access the proven technologies of each platform with a small amount of code and an interactive design canvas.
The Xcode IDE is at the center of the Apple development experience. Tightly integrated with the Cocoa and Cocoa Touch frameworks, Xcode is an incredibly productive environment for building apps for Mac, iPhone, iPad, Apple Watch, and Apple TV.
Because everything is so well integrated, workflows feel natural. As you compose a new interface, the Assistant editor intuitively presents the related source code in a split window pane. Simply drag the mouse to connect UI controls to the implementation code. Apple LLVM compiler technologies parse your code, keeping every symbol you see in the LLDB debugger consistent with the editor and compiler. As you type, that same engine is constantly at work, finding mistakes and offering Fix-its for your code.
Xcode even communicates with the Apple developer website, so you can enable services such as Game Center or Passbook in your app with a single click. When your app is ready, Xcode will bundle and submit your app to the App Store.
The Assistant button splits the Xcode editor in two, with your primary work document on the left and an intelligent Assistant editor pane to the right. The Assistant editor automatically displays files that Xcode determines are most helpful to you based on the work you are performing in the primary editor. For instance, if you are editing MyClass.m in the primary editor, the Assistant will automatically show the counterpart MyClass.h.
Clicking the Jump Bar, located at the top of every editor pane, you can quickly select what information to view in the Assistant editor. For instance, while editing source code in the primary editor, the Assistant can show the counterpart header, sub-classes or superclasses, or related tests.
Fully integrated within the Xcode IDE, the Interface Builder design canvas makes it simple to prototype a full user interface without writing any code. Prototype in minutes, then graphically connect your interface to the source within the Xcode editor, laying out windows, buttons, and sliders to create a functioning Mac, iPhone, or iPad user interface. With the Assistant editor, you can work on the graphical design side-by-side with the implementation source code. A simple mouse drag from a UI control to the source pane creates a connection between code and interface, and can even create the code stub for you.Learn more
The Version editor makes it easy to compare two versions of a file, see commit logs, check who made a code change, and even zoom back through the commit timeline. The Version editor splits the pane to show two different versions of the same file. Differences are highlighted as you travel through the timeline separating the editor views. Xcode can also create a local Git repository for new projects, or check out a hosted Subversion or Git repo. The top-level Source Control menu makes it easy to perform branch and merge operations, perfect for distributed teams.
Test-driven development is a first-class workflow within Xcode. The Test Navigator makes it incredibly easy to jump to any test in your project, execute an individual test, or execute a group of tests. The Assistant editor has new test-specific views that automatically track which tests exercise the code you are presently editing, keeping your tests and code in sync at all times.
The Xcode environment can be configured to match almost any workflow, including customization features like tabs, behaviors, and snippets.
Create a completely unique view of your project with tabs. Each tab has its own navigator, editor, assistant, and utility area arrangement. You can name tabs for specific tasks, re-arrange them, or tear out the tab to create a stand-alone window.
Tell Xcode what to do with events such as starting a debug session or encountering an error during a build. Coupled with tabs, you can create a custom work environment for each of your edit, design, build, or debug tasks. Custom behaviors can also completely re-arrange your window with a single key combination.
Dozens of pre-configured code completions, such as defining a new class or method, are included in the snippets library. By customizing or adding snippets, you can insert frequently entered code by typing only a few characters.
Get quick access to any file your project uses with Open Quickly (Command-Shift-O). Xcode immediately offers completions for your search, allowing you to choose one and hit Return to open the file or hit Option-Return to open in the Assistant editor.
Customize the way Xcode builds and runs your app depending on whether you are debugging, profiling, performing code analysis, or running a test suite. For example, the default scheme is configured to build your app in “Debug” mode when running, and the same scheme settings will build for “Release” when performing the Profile or Archive command. There is no need to change project settings as you move from task to task. Xcode configures the schemes for you automatically, or you can use the “Manage Schemes” menu to customize them yourself.