With an all-new design that looks great on macOS Big Sur, Xcode 12 has customizable font sizes for the navigator, streamlined code completion, and new document tabs. Xcode 12 builds Universal apps by default to support Mac with Apple Silicon, often without changing a single line of code.
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Designed for macOS Big Sur.
Xcode 12 looks great on macOS Big Sur, with a navigator sidebar that goes to the top of the window and clear new toolbar buttons. The navigator defaults to a larger font that’s easier to read, while giving you multiple size choices. New document tabs make it easy to create a working set of files within your workspace.
Document tabs.
The new tab model lets you open a new tab with a double-click, or track the selected file as you click around the navigator. You can re-arrange the document tabs to create a working set of files for your current task, and configure how content is shown within each tab. The navigator tracks the open files within your tabs using strong selection.
Navigator font sizes.
The navigator now tracks the system setting for “Sidebar icon size” used in Finder and Mail. You can also choose a unique font size just for Xcode within Preferences, including the traditional dense information presentation, and up to large fonts and icon targets.
Code completion streamlined.
A new completion UI presents only the information you need, taking up less screen space as you type. And completions are presented much faster, so you can keep coding at maximum speed.
Redesigned organizer.
An all-new design groups all critical information about each of your apps together in one place. Choose any app from any of your teams, then quickly navigate to inspect crash logs, energy reports, and performance metrics, such as battery consumption and launch time of your apps when used by customers.
SwiftUI
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SwiftUI offers new features, improved performance, and the power to do even more, all while maintaining a stable API that makes it easy to bring your existing SwiftUI code forward into Xcode 12. A brand new life cycle management API for apps built with SwiftUI lets you write your entire app in SwiftUI and share even more code across all Apple platforms. And a new widget platform built on SwiftUI lets you build widgets that work great on iPad, iPhone, and Mac. Your SwiftUI views can now be shared with other developers, and appear as first-class controls in the Xcode library. And your existing SwiftUI code continues to work, while providing faster performance, better diagnostics, and access to new controls.
Universal app ready.
Xcode 12 is built as a Universal app that runs 100% natively on Intel-based CPUs and Apple Silicon for great performance and a snappy interface.* It also includes a unified macOS SDK that includes all the frameworks, compilers, debuggers, and other tools you need to build apps that run natively on Apple Silicon and the Intel x86_64 CPU.
Updated automatically
When you open your project in Xcode 12, your app is automatically updated to produce release builds and archives as Universal apps. When you build your app, Xcode produces one binary “slice” for Apple Silicon and one for the Intel x86_64 CPU, then wraps them together as a single app bundle to share or submit to the Mac App Store. You can test this at any time by selecting “Any Mac” as the target in the toolbar.
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Test multiple architectures.
On the new Mac with Apple Silicon, you can run and debug apps running on either the native architecture or on Intel virtualization by selecting “My Mac (Rosetta)” in the toolbar.
Multiplatform template
New multiplatform app templates set up new projects to easily share code among iOS, iPadOS, and macOS using SwiftUI and the new lifecycle APIs. The project structure encourages sharing code across all platforms, while creating special custom experiences for each platform where it makes sense for your app.
Improved auto-indentation
Swift code is auto-formatted as you type to make common Swift code patterns look much better, including special support for the “guard” command.
StoreKit testing
New tools in Xcode let you create StoreKit files that describe the various subscription and in-app purchase products your app can offer, and create test scenarios to make sure everything works great for your customers — all locally testable on your Mac.
Get started.
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Download Xcode 12 and use these resources to build apps for all Apple platforms.
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Using the reference code table
- Find the definition of the specific Apple Diagnostics reference code and learn what next steps are needed to troubleshoot the issue.
- For issues you cannot resolve, contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to find out which service and support options are available. Be sure to share the Apple Diagnostics reference code with Apple or your service provider. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar (available in some countries and regions only).
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| Reference Code | Code Definition | Next Steps |
|---|---|---|
| ADP000 | No issues found | No issues found. If you think you have a hardware issue, contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| CNW001 CNW003 CNW004 CNW005 CNW006 | There may be an issue with the Wi-Fi hardware. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| CNW007 CNW008 | No Wi-Fi networks were detected. Either there are no Wi-Fi networks in range, or the Wi-Fi hardware may be having an issue. | Run the test again in range of a Wi-Fi network. If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| NDC001 NDC003 NDC004 NDC005 NDC006 | There may be an issue with the camera. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
NDD001 | There may be an issue with the USB hardware. | Disconnect all external devices except keyboard, mouse, and Ethernet adapter. Run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| NDK001 NDK003 NDK004 | There may be an issue with the keyboard. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
NDL001 | There may be an issue with the Bluetooth hardware. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| NDR001 NDR003 NDR004 | There may be an issue with the trackpad. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| NDT001 NDT002 NDT003 NDT004 NDT005 NDT006 | There may be an issue with the Thunderbolt hardware. | Disconnect external Thunderbolt devices and run the test again. If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
NNN001 | A serial number was not detected. | The computer requires service. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PFM001 PFM002 PFM003 PFM004 PFM005 PFM006 PFM007 | There may be an issue with the System Management Controller (SMC). | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PFR001 | There may be an issue with the computer's firmware. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPF001 PPF003 PPF004 | There may be an issue with the fan. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PPM001 | There may be an issue with a memory module. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPM002 PPM003 PPM004 PPM005 PPM006 PPM007 PPM008 PPM009 PPM010 PPM011 PPM012 PPM013 PPM014 PPM015 | There may be an issue with the onboard memory. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPP001 PPP002 PPP003 | There may be an issue with the power adapter. | Disconnect the MagSafe power adapter from the computer and the power outlet, then reconnect. Run the test again. If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PPP007 | The power adapter was not tested. | There may be an issue with the power adapter, or it may not be connected. To test the power adapter, reconnect it to the computer and the wall outlet. Run the test again. If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PPR001 | There may be an issue with the processor. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PPT001 | The battery was not detected. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPT002 PPT003 | The battery will need to be replaced soon. It is functioning normally, but holds less charge than it did when it was new. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPT004 | The battery requires service. The battery is not functioning normally, though you may not notice a change in its behavior or the amount of charge it holds. You can continue to use your battery before it’s checked without harming your computer. | You should first confirm this issue by running Apple Diagnostics over the Internet, which uses the latest diagnostic information. To do this, turn off your Mac by choosing Shut Down from the Apple () menu. Then press the power button to turn on your Mac. Immediately press and hold Option-D until Apple Diagnostics begins. If running Apple Diagnostics over the Internet confirms the issue, contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store. They'll tell you which service and support options are available. |
| PPT005 | The battery is not installed properly. Shut down and discontinue use. The computer requires service. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| PPT006 | The battery requires service. The battery is not functioning normally, though you may not notice a change in its behavior or the amount of charge it holds. You can continue to use your battery before it’s checked without harming your computer. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
PPT007 | The battery needs to be replaced. The battery is functioning normally but holds significantly less charge than it did when it was new. You can continue to use the battery until you replace it, without harming your computer. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| VDC001 VDC003 VDC004 VDC005 VDC006 VDC007 | There may be an issue with the SD card reader. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| VDH002 VDH004 | There may be an issue with a storage device. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| VDH005 | Unable to start OS X Recovery. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
| VFD001 VFD002 VFD003 VFD004 VFD005 VFD007 | There may be an issue with the display. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
VFD006 | There may be an issue with the graphics processor. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |
VFF001 | There may be an issue with the audio hardware. | Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available. |