Technotes

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All technotes — newest first (80)

• TN3212: Adopting gesture recognizers for Sidecar touch supportArticle— Use gesture recognizers to handle Sidecar touch input and update your event-hand...
• TN3211: Resolving SwiftUI source incompatibilities for State and ContentBuilderArticle— Update existing code for two foundational changes in SwiftUI built with Xcode 27...
• TN3210: Optimizing your app for iPhone MirroringArticle— Test your app and improve compatibility with iPhone Mirroring.
• TN3208: Preparing your app’s launch screen to meet App Store requirementsArticle— Understand the launch screen requirement for App Store submission starting in iO...
• TN3206: Updating Apple Pay certificatesArticle— Learn how to create, manage, and rotate Apple Pay certificates to maintain unint...
• TN3205: Low-latency communication with RDMA over ThunderboltArticle— Learn how to use RDMA over Thunderbolt to enable low-latency communication betwe...
• TN3194: Handling account deletions and revoking tokens for Sign in with AppleArticle— Learn the best techniques for managing Sign in with Apple user sessions and resp...
• TN3193: Managing the on-device foundation model’s context windowArticle— Learn how to budget for the context window limit of Apple’s on-device foundation...
• TN3192: Migrating your iPad app from the deprecated UIRequiresFullScreen keyArticle— Support iPad multitasking and dynamic resizing while updating your app to remove...
• TN3191: IMAP extensions supported by Mail for iOS, iPadOS, and visionOSArticle— Learn which extensions to the RFC 3501 IMAP protocol are supported by Mail for i...
• TN3190: USB audio device design considerationsArticle— Learn the best techniques for designing devices that conform to the USB Audio De...
• TN3189: Managing Mail background traffic loadArticle— Identify iOS Mail background traffic and manage its impact on your IMAP server.
• TN3188: Troubleshooting In-App Purchases availability in the App StoreArticle— Verify your In-App Purchases are approved and available for sale in the App Stor...
• TN3187: Migrating to the UIKit scene-based life cycleArticle— Update your app to receive scene-based life-cycle events and manage your user in...
• TN3186: Troubleshooting In-App Purchases availability in the sandboxArticle— Identify common configurations that make your In-App Purchases unavailable in th...
• TN3185: Troubleshooting In-App Purchases availability in XcodeArticle— Inspect your active StoreKit configuration file for unexpected configurations.
• TN3184: Adding data collection details to your privacy manifestArticle— Declare the data your app or third-party SDK collects in a privacy manifest.
• TN3183: Adding required reason API entries to your privacy manifestArticle— Declare the APIs that can potentially fingerprint devices in your app or third-p...
• TN3182: Adding privacy tracking keys to your privacy manifestArticle— Declare the tracking domains you use in your app or third-party SDK in a privacy...
• TN3181: Debugging an invalid privacy manifestArticle— Identify common configurations that cause unsuccessful privacy manifest validati...
• TN3180: Reverting to App Store Server Notifications V1Article— Migrate from version 2 to version 1 of App Store Server Notifications using the ...
• TN3179: Understanding local network privacyArticle— Learn how local network privacy affects your software.
• TN3178: Checking for and resolving build UUID problemsArticle— Ensure that every Mach-O image has a UUID, and that every distinct Mach-O image ...
• TN3177: Understanding alternate audio track groups in movie filesArticle— Learn how alternate groups collect audio tracks, and how to choose which audio t...
• TN3176: Troubleshooting Apple Pay payment processing issuesArticle— Diagnose errors that occur when processing Apple Pay payments, identify common c...
• TN3175: Diagnosing issues with displaying the Apple Pay button on your websiteArticle— Diagnose common errors received while displaying the Apple Pay button on your we...
• TN3174: Diagnosing issues with the Apple Pay payment sheet on your websiteArticle— Diagnose errors received while presenting the Apple Pay payment sheet on your we...
• TN3173: Troubleshooting issues with your Apple Pay merchant identifier configurationArticle— Diagnose errors due to invalid Apple Pay merchant identifier configurations by i...
• TN3168: Making your App Clip available in the App StoreArticle— Learn how to configure your App Clip to prevent it from being unavailable in the...
• TN3165: Packet Filter is not APIArticle— Plan your migration from Packet Filter to Network Extension.
• TN3164: Debugging the synchronization of NSPersistentCloudKitContainerArticle— Identify and resolve synchronization issues when working with NSPersistentCloudK...
• TN3163: Understanding the synchronization of NSPersistentCloudKitContainerArticle— Explore the details inside the synchronization of NSPersistentCloudKitContainer ...
• TN3162: Understanding CloudKit throttlesArticle— Learn how to identify and handle CloudKit throttles.
• TN3161: Inside Code Signing: CertificatesArticle— Learn how code signing uses certificates to identify code authors.
• TN3159: Migrating Sign in with Apple users for an app transferArticle— Migrate existing Sign in with Apple user identifiers and private email relay add...
• TN3158: Resolving Xcode 15 device connection issuesArticle— Identify software preventing Xcode 15 from connecting to Apple devices, and modi...
• TN3157: Updating your watchOS project for SwiftUI and WidgetKitArticle— Update your watchOS app project to adopt SwiftUI, WidgetKit, and other modern fe...
• TN3156: Create rich previews for MessagesArticle— Learn best practices for creating rich text and image previews for display in th...
• TN3155: Debugging universal linksArticle— Investigate why your universal links are opening in a web browser instead of you...
• TN3154: Adopting SwiftUI navigation split viewArticle— Use navigation split view to enable two and three column navigation in your Swif...
• TN3153: Adopting API changes for EventKit in iOS 17, macOS 14, and watchOS 10Article— Test your existing apps against EventKit API latest changes.
• TN3152: Migrating to the latest Calendar access levelsArticle— Follow these guidelines to update your app to use the new Calendar access levels...
• TN3151: Choosing the right networking APIArticle— Learn which networking API is best for you.
• TN3150: Getting ready for dataless filesArticle— Understand dataless files and how to minimize the performance impact as the syst...
• TN3149: Fetching Contacts change history eventsArticle— Learn how to fetch and process the most recent changes to the Contacts database.
• TN3147: Migrating to the latest notarization toolArticle— Migrate your notarization workflows to notarytool from the deprecated altool.
• TN3145: HDR video metadataArticle— Learn about the usage and requirements of “Ambient Viewing Environment” metadata...
• TN3138: Handling App Store receipt signing certificate changesArticle— Ensure that your app’s local receipt validation is compatible with intermediate ...
• TN3137: On Mac keychain APIs and implementationsArticle— Learn how the keychain on macOS differs from other Apple platforms.
• TN3136: AVAudioConverter - performing sample rate conversionsArticle— Use AVAudioConverter to perform sample rate conversions between PCM audio buffer...
• TN3135: Low-level networking on watchOSArticle— Learn about the supported use cases for low-level networking on watchOS.
• TN3134: Network Extension provider deploymentArticle— Explore the platforms, packaging, OS versions, and device configurations for Net...
• TN3133: Packaging a Metal rendererArticle— Distribute a Metal renderer in a Swift package.
• TN3132: Changes to EventKit and EventKitUI in iOS 16Article— Test your apps against EventKit and EventKitUI API changes in iOS 16.
• TN3130: Changes to EventKit in macOS Ventura 13Article— Test your apps against EventKit API changes in macOS Ventura 13.
• TN3129: Resolving build errors from helper tools in Xcode Cloud and other build environmentsArticle— Review common causes for failing Xcode Cloud builds that originate from helper t...
• TN3128: Starting SharePlay without an existing FaceTime callArticle— Use the share sheet or group activity sharing controller to start SharePlay dire...
• TN3127: Inside Code Signing: RequirementsArticle— Explore how macOS uses code signing requirements to reason about code identity.
• TN3126: Inside Code Signing: HashesArticle— Look inside a code signature to see how it uses hashes to protect the code’s exe...
• TN3125: Inside Code Signing: Provisioning ProfilesArticle— Learn how provisioning profiles enable third-party code to run on Apple platform...
• TN3124: Debugging coordinate space issuesArticle— Learn techniques to help debug any coordinate space issue.
• TN3123: Refactoring your storyboardArticle— Learn strategies and techniques for refactoring a single storyboard into multipl...
• TN3122: Receipt validation with the App Store fails with a non-zero error codeArticle— Identify common configurations that cause unsuccessful receipt validation with t...
• TN3121: Selecting a pixel format for an AVCaptureVideoDataOutputArticle— Learn how to choose the best output pixel format for your app.
• TN3120: Expected use cases for Network Extension packet tunnel providersArticle— Learn the expected use cases for Network Extension packet tunnel providers, and ...
• TN3118: Debugging your app’s launch screenArticle— Understand why your app’s launch screen is not displayed or updated.
• TN3117: Resolving architecture build errors on Apple siliconArticle— Update your app’s architecture build settings to support building macOS, iOS, wa...
• TN3115: Bluetooth State Restoration app relaunch rulesArticle— Learn about the conditions under which an iOS app will be relaunched by Bluetoot...
• TN3113: Testing and debugging XPC code with an anonymous listenerArticle— Use an anonymous XPC listener to simplify your XPC testing and debugging.
• TN3111: iOS Wi-Fi API overviewArticle— Explore the various Wi-Fi APIs available on iOS and their expected use cases.
• TN3110: Resolving generic Xcode archive issueArticle— Identify common configurations that cause a generic Xcode archive.
• TN3109: Resolving common archiving issuesArticle— Handle common issues that arise while archiving apps.
• TN3108: Viewing the interface of your Swift codeArticle— Learn how to navigate to the interface file of a Swift implementation file.
• TN3107: Resolving Sign in with Apple response errorsArticle— Diagnose errors received by the Sign in with Apple client, or its server infrast...
• TN3106: Customizing the appearance of UINavigationBarArticle— Adopt UINavigationBarAppearance for a navigation bar background color that’s con...
• TN3105: Customizing the UIKit status bar styleArticle— Configure the device’s status bar style to work well with your app’s user interf...
• TN3104: Recording video in Apple ProResArticle— Configure pieces of an AVCaptureSession to capture video in Apple ProRes.
• TN3103: Apple Pay on the Web troubleshooting guideArticle— Troubleshooting guide for implementing Apple Pay on the Web.
• TN3102: HTTP/3 in your appArticle— Get started with iOS 15’s new HTTP/3 support.
• Technotes— Learn about specific development topics through these in-depth technical article...