Support the iPhone Camera Control button in your own iOS app
SwiftUI, zoom, exposure, and custom control examples for handling the iPhone Camera Control button inside your own app.
Build a Twitter-style custom tab bar and sidebar in SwiftUI
Use TabView, ZStack, AsyncImage, GeometryReader, and drag state to build a custom tab bar and swipeable sidebar in SwiftUI.
Use Apple's iOS 18 Translation framework inside your app
SwiftUI and UIKit patterns for Apple's Translation framework, including built-in UI, availability checks, model downloads, and programmatic translation.
Replace deprecated SwiftUI .tabItem with the new Tab API
Use the new Tab initializer inside TabView, then add selection values and badges without relying on the old .tabItem modifier.
Build a native visionOS app with immersive spaces and tappable 3D objects
Use SwiftUI, RealityKit, ImmersiveSpace, WindowGroup, and Reality Composer Pro to build a simple visionOS mini-game.
WWDC 2024 keynote recap: visionOS 2, iOS 18, Apple Intelligence, and more
Apple's WWDC 2024 keynote, from visionOS 2 and iOS 18 to Apple Intelligence and macOS Sequoia.
Extract objects from images on iOS with ImageAnalysisInteraction and VNGenerateForegroundInstanceMask
Use Apple's high-level image interaction APIs for Photos-style subject lifting, then drop to Vision when you need the actual mask.
Fix ITMS-91053 by adding required-reason API declarations to your privacy manifest
Create PrivacyInfo.xcprivacy, attach it to the right targets, add required-reason API entries, and fill out data collection details correctly.
Create custom Swift macros for URL validation, SF Symbols, and iCloud key-value storage
Build Swift macros that validate inputs at compile time, generate accessors, and emit better diagnostics.
Show in-app hints with TipKit in SwiftUI on iOS 17
Define Tip objects, show inline and popover hints, gate them with rules, and debug TipKit behavior in SwiftUI.
19 useful SwiftUI additions in iOS 17: a practical WWDC 2023 roundup
Practical SwiftUI and related iOS 17 features shown around WWDC 2023.
WWDC 2023 keynote recap: Vision Pro, iOS 17, macOS Sonoma, and more
Apple's WWDC 2023 keynote, from Vision Pro and new Mac hardware to iOS 17, iPadOS, macOS Sonoma, and the rest of the platform sweep.
Create a half circular progress ring in SwiftUI
Trim a circle, rotate it into place, animate the value, and build a semicircular progress ring in SwiftUI.
Train a small GPT-style chatbot from your own Qiita posts with nanoGPT
Use nanoGPT, a Japanese tokenizer, and your own text corpus to train a tiny chatbot from scratch and inspect how the output improves over time.
Add LINE Login to a SwiftUI app and read the user profile with onOpenURL
Register the LINE channel, add LineSDK, wire the callback through onOpenURL, and bridge the LINE login button into SwiftUI.
Detect QR codes from the camera, highlight them, and bridge the scanner into SwiftUI
Use AVCaptureMetadataOutput to scan QR codes, draw an overlay around the detected code, and expose the scanner as a SwiftUI-compatible view.
Run Stable Diffusion with Core ML on iOS and macOS
Convert Stable Diffusion models for Apple platforms, load the compiled resources in Swift, and understand the practical limits on iPhone, iPad, and Mac.
Highlight only a QR code on iPhone with EDR rendering, Metal, and SwiftUI
Use Extended Dynamic Range rendering, Core Image, MetalKit, and SwiftUI to make only the QR region brighter instead of blasting the whole display.
Use SwiftUI views inside UICollectionView and UITableView with UIHostingConfiguration
Bridge SwiftUI into UIKit list UIs with UIHostingConfiguration, CellRegistration, supplementary registrations, and a small amount of observation-friendly model work.
Build Live Activities and Dynamic Island interfaces with ActivityKit on iPhone 14 Pro
A practical ActivityKit walkthrough covering Live Activities on the lock screen and Dynamic Island, including attributes, widget configuration, launch, updates, and ending the activity.
Use iOS 16 MapKit for map feature selection, Look Around, and search completion
A practical MapKit walkthrough for place picking, MKMapFeatureAnnotation callouts, Look Around snapshots, embedded street view, and search suggestions.
Group Core Data entries by date or category with SectionedFetchRequest
A practical SwiftUI guide to SectionedFetchRequest, grouping keys, section identifiers, and rendering grouped Core Data results.
Store secrets with LARight and gate private UI with Face ID on iOS 16
A practical LARight walkthrough for storing secrets, reauthorizing access, sharing biometric state across SwiftUI views, and hiding private data with redaction.
Run background refresh tasks and background URLSession work from SwiftUI
A practical SwiftUI guide to BackgroundTasks, scheduling refresh work, background URLSession downloads, and compatibility fallbacks.
Use VisionKit on iOS 16 for live text scanning and image text selection
A practical VisionKit guide to DataScannerViewController, recognized data types, delegate callbacks, ImageAnalyzer, and ImageAnalysisInteraction.
26 useful SwiftUI additions in iOS 16: a practical WWDC 2022 roundup
Practical SwiftUI additions from WWDC 2022, grouped into views, navigation, integrations, workflow improvements, and utility APIs.
Build charts in SwiftUI with the Charts framework on iOS 16
A practical Swift Charts walkthrough covering the data model, Chart container, mark types, multiple datasets, RuleMark, and AreaMark.
Fetch weather data with WeatherKit on iOS 16
A practical WeatherKit walkthrough covering entitlements, WeatherService, formatted weather values, forecasts, attribution, and the REST API.
WWDC 2022 keynote recap: iOS 16, macOS Ventura, iPadOS 16, and new frameworks
Apple's WWDC 2022 keynote, from the iOS 16 lock screen and Live Activities to Stage Manager, WeatherKit, Swift Charts, RoomPlan, and the M2 Mac refresh.
Create a firework particle effect in SwiftUI
Analyze the motion, move one particle with sin and cos, scale it up to many particles, and build a simple firework effect in SwiftUI.
Display markdown text in a SwiftUI app
Use markdown directly in a Text string, parse saved content with AttributedString(markdown:), and build a simple live markdown editor in SwiftUI.
Build a SwiftUI macOS menu bar app with drag and drop
Use NSApplicationDelegateAdaptor inside a SwiftUI app, create a status bar popover, accept dropped URLs, and propagate them back into SwiftUI with ObservableObject.
Build a SwiftUI calendar view with LazyVGrid
Use a 7-column LazyVGrid, generate the visible range for a month, and keep the calendar aligned by hiding overflow days.
SharePlay updates in iOS 15.4
Start a FaceTime call from your app, control the SharePlay share sheet option, manage session lifecycle, and present system notices.
Add UISearchToken tags to an iOS search view
Create UISearchToken values, assign them to a UISearchController, and bridge that search UI into SwiftUI with UIViewControllerRepresentable.
Search and play Apple Music in an iOS app with MusicKit
Enable MusicKit, check subscription state, search Apple Music, request albums, and play them with the system or in-app player.
Add a dark mode preference to a SwiftUI app
Store a user-selected appearance mode with AppStorage, expose it through a Picker, and apply it through preferredColorScheme.
Add search and search suggestions to a SwiftUI app with .searchable
Use SwiftUI's searchable modifier, bind it to state, filter list results, and show suggestion rows with searchCompletion.
Add SharePlay data sharing to an iOS 15 app
Enable the Group Activities capability, define a GroupActivity type, watch sessions, configure GroupSessionMessenger, and send data between FaceTime participants.
Periodically reload a SwiftUI view on iOS 15 with TimelineView
Use TimelineView(.periodic) to schedule redraws, read the current date from the timeline context, and turn time into a lightweight SwiftUI loading animation.
Localize a Swift project in Xcode 13
Prepare the project languages, mark strings correctly, turn on compiler extraction, export localizations, edit xcloc files, and import the translated result back into Xcode 13.
Customize SF Symbols in SwiftUI and UIKit
Use Image(systemName:), UIImage.SymbolConfiguration, hierarchical rendering, multicolor rendering, and palette colors to control SF Symbols in SwiftUI and UIKit.
Add Alternate App Icons in Xcode 13
Set up alternate app icons in Xcode 13 with asset catalogs, Alternate App Icon Sets, and UIApplication.shared.setAlternateIconName.
Show Chat Avatars in iOS Notifications with Siri Intents
Use Communication Notifications, INPerson, INSendMessageIntent, and a notification service extension to make chat notifications feel more like Messages.
Use ShazamKit for Online Music Recognition and Custom Sound Catalogs
Set up SHSession, stream microphone audio with AVAudioEngine, handle SHSessionDelegate callbacks, build a custom .shazamcatalog, and recognize your own sounds with ShazamKit.
Generate and Publish Framework Docs with Xcode 13 DocC
Create a DocC catalog, write symbol comments, build documentation in Xcode 13, customize the landing page, export .doccarchive, and host the result with nginx.
New iOS 15 SwiftUI Features You Can Use in Just a Few Lines
A compact iOS 15 SwiftUI roundup: Task, LocationButton, AsyncImage, searchable and refreshable lists, markdown text, FocusState, onSubmit, badges, and time-sensitive notifications.
WWDC 2021 keynote recap: iOS 15, Monterey, SharePlay, and new developer frameworks
Apple's WWDC 2021 keynote, from SharePlay and Focus to Monterey, Universal Control, Xcode Cloud, Live Text, and more.
15 Xcode tips for cleaner, better-structured code
Rename symbols safely, extract methods and variables, wrap strings for localization, generate initializers, save snippets, inspect history, and move around Xcode faster.
Add keyboard shortcuts to an iOS app with SwiftUI and UIKit
Use keyboardShortcut in SwiftUI, override keyCommands in UIKit, and let iPad users discover your app's shortcuts by holding Command.
Core Data and CloudKit: 9 setup tips and a debugging guide
A practical checklist for NSPersistentCloudKitContainer projects: capability setup, database environments, merge policy, dashboard verification, schema deployment, and debug flags.
Build a macOS menu bar app with SwiftUI
A practical walkthrough for creating a SwiftUI powered macOS menu bar app with AppDelegate setup, a status item, a popover, and LSUIElement.
Use Combine with a SwiftUI TextField to react to text changes
A practical SwiftUI pattern for observing TextField updates with Just, enforcing input length, and driving password validation state.
Share reservation details with Siri using INRestaurantReservation
A practical iOS guide to donating reservation data with Intents, prompting calendar additions, updating existing reservation events, and handling Siri launch callbacks.
Add Apple Maps to a web page with MapKit JS
A practical MapKit JS setup guide covering Maps IDs, token generation, the basic HTML embed, annotation pins, and key rotation.
Build a Swift Vapor contact form with GitHub sign-in, CAPTCHA, and Ubuntu plus Nginx deployment
Use Vapor and Leaf to build a contact form that signs in with GitHub, verifies users with hCaptcha, sends mail through Mailgun, and deploys cleanly to Ubuntu with Nginx.
Add custom SwiftUI views and modifiers to the Xcode library
Open the Xcode SwiftUI library, browse built-in views and modifiers, then register your own reusable SwiftUI components with LibraryContentProvider.
SwiftUI LazyVStack, LazyHStack, and List for on-screen lazy loading
Use LazyVStack, LazyHStack, or List to avoid loading every SwiftUI row at once when the screen first appears.
SwiftUI basics: conditional views and conditional modifiers
Use ternary expressions for simple values, if statements for conditional views, and custom modifiers when conditional styling should be reusable.
SwiftUI .redacted: loading placeholders for remote data
Use .redacted for loading placeholders, keep selected content visible with .unredacted(), monitor redaction state, and add a simple shimmer-like animation.
iPad trackpad support with UIPointerInteraction
Add pointer support to SwiftUI views with hoverEffect, enable it in storyboard buttons, and customize pointer behavior in UIKit with UIPointerInteractionDelegate.
SwiftUI view updates with @State, @Binding, and @ObservedObject
A SwiftUI state-management article covering local state, bindings into subviews, and observed object updates from external helpers.
App Clip complete guide: setup, invocation, saved state, and follow-through
Create the App Clip target, wire associated domains, configure App Store Connect, show the website banner, preserve shared state, confirm location, schedule notifications, and read the launch URL.
Add Core Data to an existing SwiftUI app
Create the data model, generate entity classes, add a persistence controller, inject managedObjectContext, fetch items, and choose a merge policy.
SwiftUI view components for beginners
Common SwiftUI components: text, images, lists, navigation, selection controls, layout stacks, alerts, state, previews, and UIKit bridging.
Add iOS 14 widgets to an existing app with WidgetKit
Adding WidgetKit widgets to an existing app, then making them configurable with the classic iOS 14 intent-based flow.
Build custom toggle styles in SwiftUI
ToggleStyle in SwiftUI, including configuration.label, configuration.isOn, custom switch layouts, SF Symbols, and a playful flashlight example.
Use the iOS 14 OS logging framework and read logs in Console.app
Apple's Logger API on iOS 14, including subsystem and category names, privacy markers, visibility differences, and Console.app filtering.
Find iOS crash logs and symbolicate them
Fetching crash reports from a device or Xcode, locating the right dSYM, and symbolocating reports with symbolicatecrash or atos.
Detect clipboard content types before reading the pasteboard on iOS 14
UIPasteboard.detectPatterns, why it matters for iOS 14 privacy prompts, and how to decide whether clipboard content is worth reading at all.
Test iOS in-app purchases in Xcode with StoreKit
Xcode's StoreKit Configuration workflow for local in-app purchase testing across consumables, non-consumables, and subscriptions.
Build a paged UIScrollView with UIPageControl, plus iOS 14 upgrades
Paged UIScrollView layout, UIPageControl wiring, and the iOS 14 UIPageControl additions for custom indicator images, background styles, and scrolling interaction.
Encode and decode JSON strings in Swift
Turning Swift models into JSON, decoding JSON back into models, handling mismatched keys, and comparing Codable with SwiftyJSON.
Generate PDF receipts from HTML templates in an iOS app
A practical UIKit walkthrough for building receipt HTML, converting it into PDF data, saving it locally, and presenting it with Quick Look.
Use NaturalLanguage for Japanese text processing in Swift
A practical Swift guide to detecting Japanese text and splitting it into word tokens with Apple's NaturalLanguage framework.
Xcode Simulator management commands
A practical simulator cheat sheet for status bar overrides, appearance changes, push notification testing, and media capture.
Use DisclosureGroup to show and hide grouped content in SwiftUI
A compact SwiftUI guide to DisclosureGroup, binding expansion state, and building simple collapsible sections on iOS 14.
Replace UITableView with UICollectionView list layouts on iOS 14
A practical UIKit guide to iOS 14 list-style UICollectionView layouts, header modes, diffable data sources, and snapshots.
New SwiftUI features in iOS 14: @AppStorage, @SceneStorage, and the SwiftUI app lifecycle
An iOS 14 SwiftUI article focused on storage wrappers and the new app lifecycle.
iOS 14 features you could add in just a few lines of code
A UIKit-focused roundup covering several small but useful iOS 14 APIs.
Auto-size a UITableView cell to fit a UITextView
A UIKit tutorial on making UITextView-backed UITableView cells resize automatically.
Swift networking code for URLSession, Alamofire, file upload, and SSL pinning
A Swift networking guide covering Alamofire requests, multipart upload, SSL pinning, and a plain URLSession version.
Multiple UITableViews inside one UIViewController
Extract UITableView delegate and data-source code into a reusable helper class, then wire two separate tables into one view controller.
CloudKit public database: store public app data without your own server
Use CloudKit public records for shared catalog data, add query indexes, fetch records from Swift, and deploy the schema from development to production correctly.
Add drag and drop support to UITableView
Enable dragInteractionEnabled, build UIDragItem values from table rows, receive drops, and move data between lists.
How to store user data on iOS: UserDefaults, Core Data, Keychain, and CloudKit
Choose the right iOS storage layer for preferences, structured records, secrets, and cloud-backed data, then follow this article's Xcode setup flow.
Build an iOS app that shows Qiita views, likes, and contribution activity
Case study covering cookie-backed auth, keychain token storage, URLSession requests, JSON parsing, remote image loading, and a GitHub-style contribution grid for Qiita.
Run and debug on a physical iPhone wirelessly in Xcode
A concise rewrite showing how to connect an iPhone once by cable, enable Connect via Network, then launch and debug wirelessly from Xcode.
Localize an iOS app and debug localization issues in Xcode
Base language setup, adding localizations, storyboard and string files, simulator language overrides, and missing-string checks.
Using ResearchKit on iOS for prototype study tasks and result handling
ResearchKit setup, ORKTaskViewController presentation, delegate-based result handling, and the built-in cognitive, visual, and audio study tasks.
Swift debugging techniques: breakpoints, runtime inspection, and crash triage
Print-based debugging, regular and conditional breakpoints, breakpoint actions, po inspection, runtime mutation, and Organizer crash reports.
Adding CloudKit sync to an existing Core Data app
The capability setup, container configuration, Core Data model changes, NSPersistentCloudKitContainer migration, and production schema deployment.
Detecting Japanese text regions with VNDetectTextRectanglesRequest
VisionKit document capture, VNDetectTextRectanglesRequest, VNTextObservation results, and overlay drawing for Japanese text regions.
How the WWDC student scholarship application worked: Playground, essays, and proof of enrollment
Historical guide covering the pre-2020 WWDC student scholarship format, including the Swift Playground submission, essays, eligibility proof, and inspiration resources.
Debugging iOS memory leaks and reference cycles in Xcode
The Xcode memory graph, leaked view controllers, malloc stack logging, and a weak-delegate fix for a retain cycle.
Using Core Data in iOS app extensions with a shared App Group store
App Groups, a custom NSPersistentCloudKitContainer directory override, and shared Core Data access across an iOS app and its extensions.
Automatically switch macOS wallpapers with a day and night Core ML classifier
Folder selection, Vision classification, day and night image buckets, an hourly timer, and NSWorkspace desktop image updates on macOS.
Label new images with a Core ML model through Vision on iOS and macOS
VNCoreMLModel, VNCoreMLRequest, VNImageRequestHandler, label handling, and demo app links for iOS and macOS.
Use MARK, TODO, and FIXME to organize Xcode files
Xcode code annotations: open the file outline from the jump bar, add MARK, TODO, and FIXME comments, and turn long source files into a readable outline.
Train a Create ML image classifier for anime day and night scenes
Create ML setup, image collection, training data import, model testing, and exporting the final .mlmodel file.
Useful Swift extensions for everyday iOS work
Swift convenience extensions for date formatting, alerts, table scrolling, rounded views, custom colors, screenshots, and delegate access.
Store user profiles with CloudKit and Sign in with Apple
ICloud capability setup, CloudKit schema design, Sign in with Apple, first-sign-in user creation, repeat-login fetches, and private CloudKit storage.