AI-Friendly Frameworks: As Abstraction Moves Up, How Can Verification Keep Pace?
Is UIKit really better for coding agents than SwiftUI? The issue isn't abstraction, but verification. A deep dive into stable models and Agent Ergonomics.
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202622 posts
Letting AI See SwiftUI: Xcode Preview MCP in Practice — Pitfalls and Hopes
A deep dive into Xcode MCP Preview rendering for AI workflows. Overcome stale screenshot traps with source fingerprinting and explore next-gen SwiftUI tools.
ArrangementView: Think Before You Arrange
An architectural critique of SwiftUI's ArrangementView for iPhone Duo. Explore split vs. overlay trade-offs, state pitfalls, and why you must think before you arrange.
From pbxproj to xcproj: Xcode Project Configuration Gets a JSON Format
Xcode 27.2 replaces the pbxproj build graph with JSON via project.xcproj. What really changes, how to migrate, and what it means for Tuist and XcodeGen.
SwiftData: Optimization Starts with Modeling
SwiftData lists stutter on large datasets because the framework dropped Core Data's faulting — the fetch completes and loading completes with it. Why optimization starts at modeling.
From Using AI to Delegating Work to AI (Part 1): Why I No Longer Wait for Stronger Models
Why won't stronger LLMs solve AI delegation issues? Explore the limits of AI Agents in context drift and rule decay, and why we must change how we work with AI.
From Using AI to Delegating Work to AI (Part 2): What I Mean by Delegability
How to build a trusted AI collaborator? Discover "delegatability" using a deterministic runtime and external docs, featuring a practical Task-Driven workflow guide.
ContentBuilder Explained: The Secret Behind SwiftUI's Type-Checking Speedup
Deep dive into SwiftUI's ContentBuilder. Learn how decoupling construction and validation improves compiler type-checking performance, backed by benchmarks.
Controlling Orphans in SwiftUI Text: Uncovering the Undocumented avoidsOrphans
SwiftUI's Text pushes words to avoid orphans, and you can't turn it off. Here's how the undocumented avoidsOrphans API restores control over line breaking.
Liquid Glass: A Field Guide to UIKit Compatibility Pitfalls
Two years after Liquid Glass debuted, UIKit compatibility issues still remain. This article explores real-world pitfalls, bugs, workarounds, and adaptation strategies for UIBarButtonItem, UITabBarCont...
Debugging Notes on Two SwiftUI Animation Bugs
How I tracked down two SwiftUI animation bugs: an iOS 27 parent-view rebuild that breaks explicit animation, and a ternary-vs-if/else Image glitch in List.
From Size Class to Available Space: Is horizontalSizeClass Still Reliable?
WWDC 26 makes iPhone apps resizable. Learn why horizontalSizeClass is no longer a width sensor and how SwiftUI/UIKit layout is shifting to available space.
Core Data + Observation: From Property-Level Reactivity to a Freer Mental Model
Bring SwiftData-like Observation to Core Data with CDE. Discover how to achieve property-level tracking in SwiftUI and solve key engineering challenges.
Taming Row Height and Spacing Jumps in SwiftUI List with a Custom Layout
Learn why SwiftUI List rows jump during height changes and how to fix it using a custom Layout, state machine decoupling, and CollapsibleSpacingVStack — no UIKit required.
CDE: An Attempt to Make Core Data Feel More Like Modern Swift
In my previous article, I discussed the current reality of Core Data in today's projects: it hasn't disappeared, and it still has unique value, but the disconnect between it and modern Swift projects ...
Why I'm Still Thinking About Core Data in 2026
Core Data remains widely used in 2026, but its mismatch with modern Swift concurrency, type safety, and code expression is growing. This article outlines the three core pain points and introduces a pa...
Why Does Passing NSManagedObjectContext Across Isolation Domains No Longer Error in Swift 6.2? The Real Change Isn't in the Compiler
Why NSManagedObjectContext no longer triggers concurrency errors in Swift 6.2? The real change lies in Core Data’s SDK import semantics, not the compiler itself. NSManagedObjectContext is now marked w...
Xcode 26.3 + Claude Agent: Model Swapping,MCP, Skills, and Adaptive Configuration
This article shares practical tips for configuring Claude Agent in Xcode 26.3, including how to inject MCP support, install Skills, and write adaptive CLAUDE.md files to help developers use AI assista...
From Pixel Capture to Metadata: Reimagining Screen Recording Architecture on macOS
Build a macOS screen recorder with ScreenSage Pro's dev log. Learn to master ScreenCaptureKit, Metal, fix SCK error -3821, and optimize SwiftUI performance with @Observable.
isolated(any) and #isolation: Letting Swift Closures Automatically Inherit Isolation
While Swift 6.2's Default Actor Isolation simplifies concurrency, the compiler sometimes fails to infer closure execution contexts, leading to unexpected errors. This article explores a practical solu...
Surviving tvOS: An Engineering Log of an Atypical Media Player
tvOS is far more than just an enlarged iPad. This article is an engineering log of the Syncnext player, providing an in-depth analysis of real pitfalls in Apple TV development: from the Focus mechanis...
Farewell to Portable Assembly: I've Been Running Swift on MCUs for Seven Years
Andy Liu shares his 7-year journey of bringing Swift to MCUs, starting long before Apple's official support. Explore the technical evolution of the MadMachine project and why Swift is the modern, safe...
202536 posts
The Indie Developer's Trial: Zipic's Productization Journey from 0 to 1
Building an indie product sounds easy, but you don't realize how deep the water is until you jump in. This is the true story of an indie developer turning a small workplace requirement into a flagship...
Escaping the Mac App Store: Building a Distribution and Sales System for Indie Apps from Scratch
The Mac App Store is simple to use, but it may not be suitable for all products. In this article, we follow the perspective of Zipic creator Shili to solve the distribution and sales problems of a mac...
Solving SwiftUI Pain Points and Performance Bottlenecks: Zipic Development Technical Retrospective
What other technical challenges exist in image compression software? This article is packed with hardcore, practical macOS development experience. From SwiftUI component adaptation to low-level Core G...
My Eight Years with CloudKit: From Open Source IceCream to Commercial Apps
IceCream author Cai Yue shares 8 years of CloudKit expertise: core advantages, limitations, advanced techniques, and production best practices from Music Mate and Setlists.
From YaoYao to Tooboo: watchOS Development Pitfalls and Practical Tips
Lessons from YaoYao & Tooboo: avoid watchOS pitfalls in syncing, crashes, memory leaks & battery drain. Real tips to build better Apple Watch apps.
A Deep Dive into SwiftUI Rich Text Layout: Beyond AttributedString — Inside MarkdownView and RichText
A deep dive into SwiftUI rich text layout: How MarkdownView and RichText overcome AttributedString limitations. Learn to implement advanced Markdown rendering and native text selection on iOS/macOS wi...
From iOS to Android: A Candid Look at My Real-World Journey into Dual-Platform Development
A real-world journey from iOS to Android: cross-platform development, feature alignment, app store differences, monetization strategies, and navigating China’s unique Android ecosystem
Deep Dive into iMessage: Behind the Making of an Agent
Explore iMessage internals: SQLite database structure, Core Data timestamps, macOS sandbox bypass. Learn to build iMessage Agents with TypeScript for message automation and AI integration, featuring t...
Grow on iOS 26: Liquid Glass Adaptation in UIKit + SwiftUI Hybrid Architecture
Practical iOS 26 Liquid Glass adaptation experience from Grow (180K+ 5-star ratings). Covers Sheet/Navigation/Popover refactoring, UIBarButtonItem size calculation, CABackdropLayer side effects, custo...
Using MainActor.assumeIsolated to Solve Legacy API Compatibility Issues with Swift 6
Use MainActor.assumeIsolated in a synchronous context to create closure safely on the main thread and return Sendable types, achieving full compatibility without warnings or errors.
Swift 6: Sendable, @unchecked Sendable, @Sendable, sending and nonsending
Explore how Swift 6 uses Sendable, @Sendable, sending, and nonsending to enforce concurrency safety, ensure thread-safe data transfer, and prevent race conditions.
Default Actor Isolation: New Problems from Good Intentions
Swift 6.2’s Default Actor Isolation reduces boilerplate by inferring isolation for unmarked code, but brings new actor-boundary rules and macro challenges
Core Data Migration Incident Analysis: The Hidden Traps We Overlooked
Core Data model migration caused app freezes after updates? Learn how wal_checkpoint=PASSIVE leads to migration timeouts and how to avoid main thread blocking with background initialization and WAL op...
Icon Composer: Tackling Challenges
Learn essential tips for crafting Liquid Glass icons with Icon Composer, including handling SVG exports, monochrome brightness, layer limits, and Xcode integration.
How to Detect Text Truncation in SwiftUI?
Learn how to detect text truncation in SwiftUI using fixedSize and GeometryReader, and dynamically select adaptive layouts with ZStack and layoutPriority to ensure text content displays fully without ...
Dancing with AI: My Month with Claude Code
A month-long journey with Claude Code reveals how AI reshapes coding, and why developers should stay actively involved to truly grow and avoid over-reliance.
NotificationCenter.Message: A New Concurrency-Safe Notification Experience in Swift 6.2
Discover Swift 6.2’s new concurrency-safe NotificationCenter.Message APIs to ensure type safety, eliminate runtime errors, and streamline notification handling.
Exploring the Secrets of layoutPriority in SwiftUI ZStack
Discover how SwiftUI's ZStack uses layoutPriority to compute size, allowing dynamic container resizing by toggling view importance—no ifs, no switches.
WWDC 2025 First Impressions: As Expected, Yet Unexpected
WWDC 2025 brings refined APIs across SwiftUI, SwiftData, and Foundation Models, blending polish with power to elevate the Apple developer experience
Notepad.exe: A Lightweight Swift Code Editor
Notepad.exe is a native macOS Swift editor for fast, lightweight coding. Run @main projects, use per-file Toolchains, and test SPM libraries effortlessly
Swift 6 Refactoring in a Camera App - SLIT_STUDIO Development Log
Learn how to refactor a Swift camera app for Swift 6 using actor-based concurrency, fixing AVFoundation threading issues and improving code safety
Experience the Charm of Swift: One-Click DataFrame Export
Build a generic, type-safe DataFrame export tool in Swift using TabularData, KeyPath, and ResultBuilder—with column selection, mapping, and filtering support
Demystifying SwiftUI’s .ignoredByLayout() — How to Apply Geometry Effects Without Breaking Your Layout
Explore how SwiftUI’s .ignoredByLayout() keeps visual transforms from affecting layout, enabling precise geometry reading and fixing complex layout issues.
From 180 cm to 5′ 11″: A Complete Guide to Swift Measurement
Master Swift’s Measurement API for safe unit conversion, precise formatting, and custom unit support—perfect for building internationalized, user-friendly iOS apps
Using equatable() to Avoid the NavigationLink Pre-Build Pitfall
SwiftUI NavigationLink can cause performance issues by pre-building views; using equatable() on Equatable views prevents this and keeps navigation smooth.
Building Type‑Safe, High‑Performance SwiftData / Core Data Models
Learn to build Type-safe, efficient SwiftData/Core Data models using computed properties, bitmasks, and custom types like ValidatedName to enforce business logic and improve query performance.
My Hopes for Xcode
Discover six key improvements Xcode needs—ranging from SPM support to AI enhancements—to stay competitive and reclaim its place as developers’ preferred tool.
Building WASM Applications with Swift
Swift 6.1 now supports official WebAssembly builds via SwiftWasm—no patches needed. Use JavaScriptKit for seamless Swift–JavaScript interaction in WASM apps.
Say Goodbye to dismiss: A State-Driven Path to More Maintainable SwiftUI
Avoid overusing dismiss in SwiftUI. Embrace state-driven alternatives like Binding or custom environments for safer, testable, and maintainable UI logic
SwiftUI Environment: Concepts and Practice
Learn how SwiftUI Environment, @Environment, EnvironmentObject, and custom EnvironmentValues support dependency injection, Observation, concurrency, and app architecture.
Using Proxyman to Intercept and Simulate iPhone App Network Requests
Debug iPhone app traffic with Proxyman: install iOS certificates, decrypt HTTPS requests, use Map Local, and mock API responses without relying on a real server.
Key Considerations Before Using SwiftData
Understand SwiftData limitations before adoption, including CloudKit sync requirements, GRDB and SQLite tradeoffs, model design constraints, and migration risks.
Lazy Initialization @State in SwiftUI: Overcoming Premature Object Creation
@State in SwiftUI does not support lazy initialization, causing premature instance creation. Learn how @LazyState enables lazy loading for Observable instances, optimizing performance.
Animatable Protocol: Taming Unruly SwiftUI Animations
The SwiftUI Animatable protocol allows for precise animation control, resolving issues like missing or inconsistent animations. Learn how animatableData can improve animation accuracy and stability in...
From Host to Serverless: A Blog Architecture Migration Journey
Learn how I migrated my blog from Host + CDN to Serverless with EdgeOne Pages. Key upgrades include faster builds with Astro 5, AI-assisted optimizations, and a custom short URL service.
Mastering SwiftUI Scrolling: Implementing Custom Paging
SwiftUI's scrollTargetBehavior provides precise scrolling control, but default paging misaligns in landscape mode. This article explores its limitations and implements a custom ScrollTargetBehavior fo...
202447 posts
Why Certain View Modifiers in Swift 6 Cannot Use the @State Property
SwiftUI in Swift 6 fails with @State in view modifiers due to stricter concurrency & @MainActor. Learn solutions for alignmentGuide, scrollTransition & more.
Traps and Countermeasures for Abnormal onAppear Calls in SwiftUI
Discover unexpected SwiftUI onAppear behavior causing performance issues & state changes. Learn how to identify & temporarily fix abnormal calls in NavigationStack & TabView.
Model Inheritance in Core Data
Explore Core Data's model inheritance: Parent, Sub, and Abstract entities. Learn the pros, cons, and how to achieve similar effects without direct use.
Typefully: Say Goodbye to the Hassles of Social Media Posting
Struggling with social media posting? I share my experience using Typefully to manage & publish content across platforms efficiently. See how it helps!
Intentional Design or Technical Flaw? The Anomaly of onChange in SwiftUI Multi-Layer Navigation
Explore SwiftUI's `onChange` modifier “selective deafness” in multi-layer navigation. Understand why it might not trigger as expected and learn how to work around this issue.
Using Transactions Instead of Save in SwiftData and Core Data
Explore how to use transactions in SwiftData & Core Data for reliable data persistence. Improve app performance & ensure data integrity with proper transaction management.
Understanding SwiftUI's View Update Mechanism: Starting from a TimelineView Update Issue
Explore SwiftUI's view update mechanism with a TimelineView issue. Learn about view types, declarations, and instances for efficient UI updates.
Mastering Data Tracking and Notifications in Core Data and SwiftData
Explore data tracking in Core Data & SwiftData, from custom notifications to Persistent History Tracking, for robust data sync solutions. Learn key techniques.
Starting with Project Refactoring: Sharing Five Swift Modules
Explore five open-source Swift modules from a recent app refactor, including SimpleLogger, iCloudSyncStatusKit, ObservableDefaults, CoreDataEvolution, and ModelActorX.
Comprehensive Guide to Mastering KeyPath in Swift
Explore Swift KeyPath: understand its power, types (AnyKeyPath, WritableKeyPath), usage, and how it enhances metaprogramming. Master property access with KeyPath.
Reinventing Core Data Development with SwiftData Principles
Explore how to apply SwiftData's modern data modeling and concurrent programming principles within Core Data. Enhance stability, reliability, and innovation.
UserDefaults and Observation in SwiftUI: How to Achieve Precise Responsiveness
Explore how to efficiently manage UserDefaults with SwiftUI's Observation framework. This article provides a complete solution for precise, responsive data handling, including the @ObservableDefaults ...
NSManagedObjectID and PersistentIdentifier: Mastering Data Identifiers in Core Data and SwiftData
Explore NSManagedObjectID and PersistentIdentifier in Core Data and SwiftData. Learn their features, usage, and how to manage data object identity efficiently.
Mastering Data Binning with Swift Charts
Explore how to use Swift Charts’ advanced APIs for precise data binning. Learn about NumberBins and DateBins for efficient data processing and visualization. Discover how to improve app performance.
Considerations for Using Codable and Enums in SwiftData Models
Explore key considerations for using Codable and enums in SwiftData models. Learn how SwiftData handles Codable, query predicates, and potential pitfalls to avoid.
Nested Grid Layout Anomaly: Analysis Approach and Resolution Strategies for SwiftUI Layout Issues
Explore a SwiftUI Grid layout issue, learn analytical approaches & solutions for everyday SwiftUI development. Discover the root cause and a robust fix.
How to Tile Images in SwiftUI
Explore two SwiftUI image tiling methods: resizable & foregroundStyle with ImagePaint. Learn a custom Image construction for SF Symbols tiling.
Common Misconceptions About SwiftUI
Explore common SwiftUI misconceptions, including its learning curve, cross-platform capabilities, and code volume. Understand its true potential for better app development.
Developing an Infinite Four-Direction Scrollable Pager with SwiftUI
Explore how to build an infinite four-direction scrollable pager in SwiftUI, overcoming limitations and leveraging custom gestures. Learn key techniques and considerations.
Techniques for Automatic Merging of String Catalogs in Multi-Package Monorepos
Learn how to automatically merge String Catalogs across Swift packages in a monorepo during your main app's build, avoiding manual steps. Simplify i18n for Swift apps.
List or LazyVStack: Choosing the Right Lazy Container in SwiftUI
Explore SwiftUI's List and LazyVStack. Understand their differences, performance, and when to use each for optimal UI development and data display.
Swifter and Swifty: Mastering the Swift Testing Framework
Explore Swift Testing, Apple’s new framework for writing faster, Swifter tests that align with Swift programming habits. Learn how to configure, write expectations, organize test cases and much more.
The Evolution of SwiftUI Scroll Control APIs and Highlights from WWDC 2024
Explore the evolution of SwiftUI scroll control APIs, from WWDC 2019 to 2024. Learn about ScrollViewReader, scrollPosition, onScrollPhaseChange, & more.
Creating Stunning Dynamic Text Effects with TextRenderer
Explore SwiftUI's TextRenderer for dynamic text effects. Learn to customize text rendering, create colorful animations, & use transitions. Dive into the new WWDC 2024 feature!
Impressions on WWDC 2024
WWDC 2024 showcased Apple’s AI, Swift 6, SwiftData & SwiftUI updates. Explore how these impact future development and offer new possibilities. Learn about Apple’s innovative approach.
SwiftData in WWDC 2024: The Revolution Continues, Stability Still Awaits
Review of SwiftData's WWDC 2024 update: custom storage, Swift history, batch delete, new macros. Performance and stability concerns remain. Is it ready for projects?
Before WWDC 2024: The Future Potential and Real Challenges of SwiftData
Explore SwiftData's performance since Xcode 15 release & its future. We assess its role in Apple's ecosystem and highlight key issues, like predicate conversion and UI updates.
Before WWDC 2024: Reviewing Key SwiftUI Upgrades from 2019 to 2023 and Their Impact
Explore key SwiftUI upgrades from 2019 to 2023, including the Observation framework, SwiftData, and more. See how they've transformed app development.
What Does spacing = nil Mean in SwiftUI?
Explore SwiftUI spacing in-depth: understand what spacing = nil means, how default spacing is calculated, and when to use specific values. Learn practical spacing tips.
Mastering the containerRelativeFrame Modifier in SwiftUI
Explore SwiftUI's containerRelativeFrame modifier: definition, layout rules, use cases, and a backward-compatible replica. Master flexible layouts now!
Developing Embedded Applications with Swift
Explore using Swift for embedded development on the SwiftIO board. Learn how to abstract hardware, use familiar tools for development, and improve efficiency.
In-Depth Exploration of Overlay and Background Modifiers in SwiftUI
Explore SwiftUI's overlay and background modifiers, understanding their differences from ZStack, alignment logic, size control, and best practices for usage.
Core Data Reform: Achieving Elegant Concurrency Operations like SwiftData
Explore how to bring SwiftData's elegant concurrency to Core Data. Learn to implement a Core Data version of @ModelActor using custom executors for safer, efficient data handling.
The @State Specter: Analyzing a Bug in Multi-Window SwiftUI Applications
Explore a SwiftUI bug in multi-window apps using @State, causing shared states. Discover temp fixes & insights into @State.
New Frameworks, New Mindset: Unveiling the Observation and SwiftData Frameworks
Explore Observation & SwiftData frameworks from Let's VisionOS 2024. Learn how they solve existing issues, encouraging a new development mindset.
SwiftUI Views and @MainActor
Explore @MainActor in SwiftUI: understand its use, solve concurrency issues, and learn best practices for Swift 6. Dive into View protocol updates & practical tips.
Practical SwiftData: Building SwiftUI Applications with Modern Approaches
Learn how to integrate SwiftData with modern programming concepts in SwiftUI apps. This tutorial covers modularity, testability, and thread safety for robust data management.
Tips and Considerations for Using Lazy Containers in SwiftUI
Explore practical tips for using SwiftUI's lazy containers like List & LazyVStack. Enhance app performance, optimize resource use, and avoid common pitfalls.
How to Dynamically Construct Complex Predicates for SwiftData
Explore dynamically creating predicates for SwiftData, similar to NSCompoundPredicate, using PredicateExpression for flexible data filtering.
Swift Predicate: Usage, Composition, and Considerations
Explore Swift Predicate's structure, usage, and key considerations for data filtering. Learn how it enhances development with type safety, platform compatibility, and flexible syntax.
How to Handle Optional Values in SwiftData Predicates
Explore techniques for handling optional values when building SwiftData predicates, including optional chaining, nil-coalescing, and flatMap. Learn best practices.
Exploring Property Wrappers in SwiftUI: @UIApplicationDelegateAdaptor, @AccessibilityFocusState, @FocusedObject, @FocusedValue, and @FocusedBinding
Explore SwiftUI's powerful property wrappers: @UIApplicationDelegateAdaptor for UIKit integration, @AccessibilityFocusState for enhanced accessibility, and @FocusedObject, @FocusedValue, @FocusedBindi...
Exploring SwiftUI Property Wrappers: @FetchRequest, @SectionedFetchRequest, @Query, @Namespace, @Bindable
Explore SwiftUI property wrappers like @FetchRequest, @SectionedFetchRequest, @Query, @Namespace, & @Bindable. Learn how they simplify data fetching & view management.
Exploring SwiftUI Property Wrappers: @AppStorage, @SceneStorage, @FocusState, @GestureState and @ScaledMetric
Explore SwiftUI property wrappers like @AppStorage, @SceneStorage, @FocusState, @GestureState, & @ScaledMetric for data persistence, focus, gestures, & scaling.
Relationships in SwiftData: Changes and Considerations
Explore SwiftData relationships with @Relationship, inverse relationships, one-to-many and many-to-many modeling, ordering, delete rules, and performance considerations.
Mastering Relationships in Core Data: Practical Application
Explore practical techniques for handling Core Data relationships, including optionals, collection types, derived attributes, subqueries, and optimization tips.
Mastering Relationships in Core Data: Fundamentals
Explore Core Data relationships: types (one-to-one, one-to-many, many-to-many), inverse relationships, delete rules, and optimization for efficient data management.
202334 posts
Blog Update Chronicle: Welcoming 2024 with a New Blog
Explore my journey of rebuilding my blog with AI and new technologies like Astro, TailwindCSS, and MDX. Learn about my experience and insights.
Exploring Key Property Wrappers in SwiftUI: @State, @Binding, @StateObject, @ObservedObject, @EnvironmentObject, and @Environment
Explore essential SwiftUI property wrappers: @State, @Binding, @StateObject, @ObservedObject, @EnvironmentObject, and @Environment. Understand their core functions and when to use each.
Advanced iCloud Documents: Understanding Placeholder Files, Space Optimization, and Operational Techniques
Explore iCloud Documents' unique features, placeholder files, space optimization, and file operations. Learn debugging tips for better cloud sync app development.
In-Depth Guide to iCloud Documents: Fundamental Setup and File Operations
Learn how to integrate iCloud Documents into your apps, perform file read/write, and handle content changes using NSFileCoordinator. Includes setup, access, and best practices.
SwiftUI geometryGroup() Guide: From Theory to Practice
Explore SwiftUI's geometryGroup() for handling animation anomalies and layout issues. Learn its usage, how it works, and alternatives for older SwiftUI versions.
Pair Programming with AI
Explore my experience rebuilding my blog with AI pair programming. Learn how I used AI tools like ChatGPT, Copilot, and Claude to master new languages, frameworks, and solve development challenges.
Mastering ViewThatFits
Explore SwiftUI's ViewThatFits: learn its rules, ideal size, usage, and how to recreate it with Layout protocol. Master adaptive layouts for your iOS apps.
GeometryReader: Blessing or Curse?
Explore GeometryReader's common problems in SwiftUI. Is it a curse or a blessing? Understand its layout, information retrieval, performance, and when to use it correctly. Includes new onGeometryChange...
How to Observe Data Changes in SwiftData using Persistent History Tracking
Explore how to observe specific data changes in SwiftData using Persistent History Tracking. Learn to manually respond to transactions for greater control, integration, and customization. Includes cod...
Mastering TipKit: Advanced
Explore advanced TipKit: customize views beyond TipView, integrate with UIKit, enable cross-app data sharing, reuse Tip code, and address FAQs. Learn how to observe status & more!
Mastering TipKit: Basics
Explore Apple's TipKit framework for displaying tips in your apps. Learn how to define, initialize, and customize tips using SwiftUI. Discover rules, events, and display strategies.
Concurrent Programming in SwiftData
Explore SwiftData's elegant concurrency mechanism, a successor to Core Data. Learn how it uses serial queues and Actors for safe, efficient multi-threading. Discover best practices for data access and...
Unveiling the Data Modeling Principles of SwiftData
Dive into SwiftData's code-first data models, exploring PersistentModel creation, Swift language features, and its relation to Core Data. Learn how it works!
Exploring CoreData - From Data Model Creation to Managed Object Instances
Dive into Core Data's inner workings: learn how it builds managed object instances from a data model. Explore model creation, NSManagedObject subclasses, and more.
SwiftDataKit: Unleashing Advanced Core Data Features in SwiftData
Explore how to use Core Data's advanced features in SwiftData with SwiftDataKit, bypassing the Core Data stack. Enhance SwiftData with grouped counts and subqueries.
Common Pitfalls Caused by Delayed State Updates in SwiftUI
Explore two serious SwiftUI issues caused by delayed state updates: app freezes after sheet dismiss & navigation swipe, crashes when returning while scrolling. Solutions provided.
WWDC 2023, What’s New in Core Data
Explore Core Data’s WWDC 2023 updates: composite attributes, Swift-friendly predicates, version checksum, deferred & staged migration. Learn how these enhancements benefit your data management.
The Secret to Flawless SwiftUI Animations: A Deep Dive into Transactions
Explore SwiftUI Transactions: principles, functions, and distribution for precise animation control. Learn about implicit, explicit animations, and how to use them effectively. Also, cover the latest ...
A Deep Dive Into Observation: A New Way to Boost SwiftUI Performance
Explore the Observation framework in Swift 5.9: Learn its creation, usage, and benefits for SwiftUI performance. Understand how it improves upon KVO and Combine.
Deep Dive into the New Features of ScrollView in SwiftUI
Explore SwiftUI 5 ScrollView APIs, including scrollPosition, scrollTargetLayout, contentMargins, safeAreaPadding, scroll indicators, and inset handling.
WWDC 23, First Impressions of SwiftUI 5 and SwiftData
WWDC 2023 unveils SwiftUI 5.0 with revolutionary data flow, animation upgrades, and enhanced ScrollView. Also, explore SwiftData, Apple’s new Swift-based persistence framework.
Five Years Since the Transplant
Five years post kidney transplant, I'm sharing my health journey, from onset of kidney issues, dialysis, to transplant & recovery. Learn about my experience & health data.
Building Stable Preview Views: How SwiftUI Previews Work
Explore SwiftUI preview's mechanism and limitations. Learn how it works via derived code, dynamic replacement, and XPC. Discover why previews crash & how to fix it.
What I Hope to See for Core Data at WWDC 2023
Discover the author's hopes for Core Data at WWDC 2023: Swift implementation, API upgrades, SQLite features, better model editor, and CloudKit improvements.
What I Hope to See for SwiftUI at WWDC 2023
Explore a SwiftUI wishlist for WWDC 2023: granular view updates, unified gestures, enhanced text handling, stable ForEach, & forward compatibility.
I Attended a SwiftUI Tech Salon in Beijing
I attended Apple's SwiftUI Tech Salon in Beijing, learning from experts on multi-platform apps, custom layouts, and SwiftUI/UIKit integration. Key takeaways from the event.
Building Cross-Platform SwiftUI Apps
Learn how to build cross-platform SwiftUI apps. This article covers key aspects like compatibility, data sources and adapting to multiple windows, based on a presentation at the SwiftUI Technology Sal...
AI Services that I am Currently Using
Explore my current AI tools: Github Copilot for coding, Notion AI for text, Warp AI for terminals, MidJourney for art, and my mixed feelings about ChatGPT. Learn how AI enhances my workflow.
Timing of onAppear Invocation
Explore the timing of SwiftUI's onAppear modifier with evidence from new SwiftUI 4 APIs. Learn when onAppear is invoked: after layout, before rendering.
MacBook Pro Usage Experience
After a week with the MacBook Pro 14', I'm sharing my experience switching from an iMac, including data transfer, performance, and my impressions. Key takeaways: quiet operation, sufficient power, and...
Memory Optimization Journey for a SwiftUI + Core Data App
Optimize memory in SwiftUI + Core Data apps! This guide uses a sample to enhance performance, covering lazy views, managed objects, and row cache. Learn to reduce app crashes.
Layout in SwiftUI Way
Explore SwiftUI's powerful layout system by using multiple methods to achieve one UI goal. Learn about offset, alignmentGuide, NameSpace, ScrollView and more.
Cracking the Code: The Mysterious @State Injection Mechanism
Explore SwiftUI @State injection optimization, modal view timing, and data coordination using a 'mysterious code' example. Learn how @State impacts updates in different contexts.
Customizing the Appearance and Interaction Behavior of Buttons
Learn how to customize SwiftUI Button appearance and interaction using ButtonStyle & PrimitiveButtonStyle protocols. Add custom animations & control button behavior.
202241 posts
SwiftUI and Core Data: Safely Responding to Data
Learn to handle Core Data in SwiftUI safely, prevent crashes, ensure real-time updates, and provide accurate data with best practices.
SwiftUI and Core Data: Data Fetching
Learn how to efficiently fetch Core Data in SwiftUI with a custom FetchRequest using mock data for testing and previewing. Enhance your data handling strategies now!
SwiftUI and Core Data: Data Definition
Explore a modern approach to SwiftUI & Core Data data definition. Learn how to decouple views from managed objects using protocols for better flexibility & testability.
SwiftUI and Core Data: The Challenges
Explore the challenges of integrating Core Data with SwiftUI & TCA. Discover solutions to improve data definitions, testing, and concurrency, while retaining Core Data's strengths.
Adaptive Programmatic Navigation in SwiftUI
Create adaptive programmatic navigation in SwiftUI for different size modes, focusing on iPadOS & Stage Manager. Learn NavigationStack vs NavigationSplitView state management.
Unified Resource Management in Multi-package Projects
Learn how to manage resources uniformly in multi-package Swift projects using SPM. Avoid duplication, ensure synchronization, and keep a single copy.
Ask Apple 2022 Q&A Related to SwiftUI (Part 2)
Explore SwiftUI insights from Ask Apple 2022. This article compiles key Q&A, offering solutions on Form vs List, performance, custom layouts, and more. A must-read for SwiftUI developers seeking best ...
Ask Apple 2022 Q&A Related to SwiftUI (Part 1)
Explore SwiftUI solutions from Ask Apple 2022 Q&A. This article provides developer insights on UIActivityViewController, contextAction, testing @State, and more. Learn from Apple engineers.
Ask Apple 2022 Q&A Related on Core Data (Part 2)
Explore Core Data insights from Ask Apple 2022, Part 2. Learn about derived attributes, syncing, Spotlight, @FetchRequest, and more. Includes expert tips.
Ask Apple 2022 Q&A Related on Core Data (Part 1)
Explore Core Data insights from Ask Apple 2022 Q&A, covering topics like storing photos, iCloud sync, handling errors, data sharing, and more. Part 1 of a detailed analysis.
The Composable Architecture (TCA)
Explore the Composable Architecture (TCA), a powerful SwiftUI framework for complex app development. Learn its features, benefits, recent updates, and usage considerations.
SwiftUI’s StateObject and ObservedObject: The Key Differences
Explore the nuances of SwiftUI's StateObject and ObservedObject. Learn their principles, differences, and when to use each for optimal data management and view updates.
Reflections on iBug 16
SwiftUI 4's unprecedented bugs in 2022 reflect a broader issue of rapid development in Apple & beyond. Explore the impact of constant change and OTA's evolution.
Some Suitable Tutorials for SwiftUI Beginners
Explore beginner-friendly SwiftUI tutorials from Hacking with Swift, AppCoda, Design Code & more. Start your SwiftUI journey with ease!
How to Determine if ScrollView, List is Currently Scrolling in SwiftUI
Learn how to detect scrolling in SwiftUI using Introspect, Runloop, and PreferenceKey. Discover advantages and limitations. The IsScrolling library combines the last two methods for easy use.
Old Man New Soldier - A Development Memoir of an iOS APP
A developer’s journey of relearning programming & building an iOS app, Health Notes, using SwiftUI, Combine, & Core Data. Learn about challenges, tips, & insights.
Several Ways to Center Views in SwiftUI
Explore various methods to center views in SwiftUI, including Spacers, alignment guides like ZStack and frame, and GeometryReader. Understand each method's principles, scenarios, and considerations.
Implementing Keyword-based Search and Positioning in SwiftUI Text
Explore how to implement keyword search and highlighting in SwiftUI Text using AttributedString. Learn to navigate search results and enhance user experience.
Mixing Text and Image in SwiftUI
Explore how to mix text and images within SwiftUI's Text view. Learn techniques for dynamic sizing and text alignment. Includes practical examples and code.
Mastering the SwiftUI task Modifier
Explore SwiftUI's task modifier for async operations. Learn to handle cancellations, background tasks, & avoid unnecessary refreshes. Includes code examples & tips for older versions.
How to Avoid Repeating SwiftUI View Updates
Optimize SwiftUI view calculations: Avoid redundant updates using efficient parameters, view decomposition, Equatable, and event source control. Boost performance now!
Switching Core Data Cloud Sync Status in Real-Time
Explore how to enable or disable Core Data CloudKit sync in real-time using dual containers & persistent history tracking. Learn the implementation details.
SwiftUI Layout: Cracking the Size Code
Explore SwiftUI layout by imitating 'frame' and 'fixedSize' view modifiers. Learn about layout issues via examples, and the difference between appearance and essence.
SwiftUI Layout: The Mystery of Size
Explore SwiftUI size concepts for layout, understanding how proposed, required, and layout sizes work. Master SwiftUI layout with practical examples.
Alignment in SwiftUI: Everything You Need to Know
Explore SwiftUI alignment using the Layout protocol. Learn how alignment guides & view alignment work. Master SwiftUI layout for flexible UI design.
Creating Tables with Table in SwiftUI
Learn how to use SwiftUI’s Table for creating interactive, multi-column tables on macOS & iPadOS. Explore features like sorting, selection, & implementing similar functionality on other platforms.
Deep Dive into Modern SwiftUI Navigation: NavigationStack and NavigationSplitView
Deep dive into the modern SwiftUI navigation system. Learn how to use NavigationStack and NavigationSplitView for programmatic navigation, view stack management, and deep linking.
Batch Operations in Core Data
Explore Core Data's batch operations: principles, usage (delete, update, insert), advanced techniques, and essential considerations for efficient data handling.
How Core Data Saves Data in SQLite
Explore how Core Data saves data in SQLite. Learn about tables, fields, persistent history tracking, and entity relationships. Understand Z_PK, Z_ENT, and more.
Best Practices for Detecting and Opening URLs in SwiftUI
Explore SwiftUI's best ways to open URLs, from buttons to text links. Learn how to customize URL handling and auto-detect links within text for a seamless user experience.
Going Beyond @Published:Empowering Custom Property Wrappers
Explore how to make custom Swift property wrappers like @Published by enabling notifications to classes, using static subscript methods. Includes examples for @MyPublished, @PublishedObject, and @Clou...
Demystifying SwiftUI Animation: A Comprehensive Guide
Understand SwiftUI animation mechanics, including .animation(_:value:), withAnimation, AnimatableData, VectorArithmetic, timing curves, and transitions.
The Blogging Tools I'm Currently Using
Explore the tools I use for blogging, from data & text editing (Typora, VSCode), to screen capture (iShot, RocketSim), format conversion, image editing & hosting. Boost your workflow!
Demystifying SwiftUI List Responsiveness: Best Practices for Large Datasets
Explore SwiftUI list optimization through a case study. Learn how to identify & resolve performance issues when handling large datasets, plus best practices for smooth navigation.
Mastering zIndex in SwiftUI
Learn how to master zIndex in SwiftUI to control view layering, avoid animation issues, and use it effectively in various layout containers.
ViewBuilder Research: Creating a ViewBuilder Imitation
Explore SwiftUI's ViewBuilder by creating an imitation. Learn about view protocol, view types, and how SwiftUI handles views. Includes code examples for View, EmptyView, TupleView, and more.
ViewBuilder Research: Mastering Result Builders
Explore Swift result builders: custom containers, modifiers, compatibility, and limitations. Master ViewBuilder for SwiftUI view creation. Includes code examples.
SwiftUI Overlay Container 2: Customizable, Efficient, and Convenient View Manager
SwiftUI Overlay Container is a customizable, efficient view manager for SwiftUI. Simplify view organization, transitions, animations, and more with ease. Try it now!
Blog Hiatus Notice
My blog, "Fatbobman's Blog," has been live for 2 years now. The initial purpose of writing this blog was to document my learning process through writing, to deepen my understanding, and to share my fi...
Count Queries in Core Data: The Master Guide
Explore various methods for querying and using count in Core Data, including countResultType, managed object context, result sets, relationships, and derived properties. Learn how to optimize count qu...
Customizing Gestures in SwiftUI
Customize native SwiftUI gestures with DragGesture, GestureState, tap locations, simultaneous gestures, and UIGestureRecognizerRepresentable for UIKit gesture bridging.
202140 posts
Exploring Xcode Playground (Part 2)
This article delves deeper into Xcode Playground, focusing on aspects such as auxiliary code, resource management, and exploring packages and Xcode projects with Playground. These tips and methods aim...
Exploring Xcode Playground (Part 1)
Master Xcode Playground: creation, debugging, stability & more. Explore tips for third-party libraries, resources, async & doc. Part 1 focuses on setup & debugging.
Swift Playgrounds 4: Entertainment or Productivity
Explore Swift Playgrounds 4's revolutionary features for iPad app development. Learn how it bridges education and productivity for Swift developers. Is it the future of mobile coding?
Using NSUbiquitousKeyValueStore with SwiftUI
Explore how to use NSUbiquitousKeyValueStore for cross-device data sharing in SwiftUI. Learn about its features, configurations, and practical usage with examples. Includes comparison to UserDefaults ...
Collaboration between Combine and async/await
Explore how Combine and async/await can work together effectively. Learn their advantages, how to serialize event processing, and integrate them in Swift development, with practical code examples.
Lifecycle of SwiftUI Views
Explore the SwiftUI view lifecycle, including struct instance creation, view value trees, and the nuances of onAppear and onDisappear. Learn to optimize your SwiftUI code.
Mastering Safe Area in SwiftUI
Learn how to get safe area height in SwiftUI, read GeometryProxy.safeAreaInsets, use safeAreaInset, and control layouts with ignoresSafeArea.
How to Deep Copy NSManagedObject in Core Data
Explore deep copying NSManagedObject in Core Data: challenges, solutions, and MOCloner tool. Learn how to handle complex relationships and customize data copying.
Implementing iOS Notes' Document Scanning Feature with Apple's Official API
Learn how to create a document scanning feature like iOS Notes using Apple's frameworks: VisionKit, Vision, NaturalLanguage & CoreSpotlight. Capture, recognize, & index scanned text.
Several Tips on Core Data Concurrency Programming
Explore Core Data concurrency tips: debug params, reduce blocking using perform, NSManagedObjectID & more. Enhance your app's performance & avoid common pitfalls.
Mastering Core Data Stack
Learn how to design a robust Core Data Stack, covering its functions, components like NSManagedObjectModel and NSPersistentStoreCoordinator, and configurations. Understand the evolution from basic set...
Understanding SwiftUI's onChange
Explore SwiftUI's onChange modifier: learn its features, usage, precautions, and alternatives. Understand how it observes values and triggers actions on change. Avoid common pitfalls for efficient cod...
How to use Derived and Transient Properties in Core Data
Explore Derived & Transient properties in Core Data. Learn how to set them up, use them for efficient data management, and understand their benefits & limitations.
SwiftUI TextField Advanced — Events, Focus, and Keyboard
Handle SwiftUI TextField focus, onSubmit, keyboard dismissal, keyboard types, and accessory views with FocusState and modern SwiftUI patterns.
Reflecting on Two Years of Using Health Notes and My Physical Condition in Recent Years
Track my health journey with Health Notes for two years. See my physical improvements post-surgery, creatinine levels, and how data helps manage my health & even my dog’s health!
Advanced SwiftUI TextField: Formatting and Validation
Explore advanced SwiftUI TextField techniques: real-time formatting, invalid character filtering, and input condition validation. Learn to enhance your app’s text input.
AttributedString: Making Text More Beautiful Than Ever
Explore Apple's AttributedString, a Swift alternative to NSAttributedString for styled text. Learn to create custom attributes, use Markdown, & more.
Modern Swift Formatter API: Deep Dive and Customization Guide
Learn the design mechanism of the modern protocol-based Swift Formatter and compare it with traditional NSFormatter. This guide demonstrates creating custom Formatters for String and AttributedString,...
Globalize Your SwiftUI App: A Comprehensive Guide to Localization
Learn how to localize text in SwiftUI apps, covering string files, plural rules, & device-specific settings. Includes examples for dates, currencies, & more. Get practical localization tips.
Showcasing Core Data in Applications with Spotlight
Learn how to use NSCoreDataSpotlightDelegate to add your app's Core Data to Spotlight, increasing visibility and user findability. Updated for WWDC 2021, includes persistent history for automatic upda...
SheetKit: SwiftUI Modal View Extension Library
SheetKit is a SwiftUI extension library for modal views, offering methods for presenting, dismissing, and managing sheets, fullScreenCovers, and custom bottomSheets. It enhances deep link handling and...
How to Implement interactiveDismissDisabled in SwiftUI
Explore how to enhance SwiftUI 3.0's interactiveDismissDisabled with functional extensions. Control sheet dismissal & get user gesture notifications. Learn the implementation!
Core Data with CloudKit: Sharing Data in the iCloud
Explore how to build apps that share data with multiple iCloud users using Core Data with CloudKit. Learn about owners, participants, CKShare, and more.
Rebuilding SwiftUI's Redux-like State Container with Async-Await
Refactor SwiftUI state container with Swift 5.5's Async/Await. Learn how to handle side effects and ensure main thread updates for your app's state management.
Enhancing SwiftUI Navigation Views with NavigationViewKit
NavigationViewKit, a SwiftUI extension, solves native NavigationView issues like root view navigation, code-based navigation, and inconsistent column displays. It offers convenient, SwiftUI-style navi...
How to Preview a SwiftUI View with Core Data Elements in Xcode
Explore reasons for SwiftUI preview crashes with Core Data, learn to avoid them, and reliably preview views in Xcode. Includes tips on data management for previews.
Using UIKit Views in SwiftUI
Learn how to use UIKit views in SwiftUI, style them, and understand key considerations when wrapping a UITextField. Master UIViewRepresentable for seamless integration.
Blog Update Journal
I renovated my blog, diving into web technologies like CSS & JavaScript, mastering Visual Studio Code. This update added comments, responsive layout, & TOC.
Core Data with CloudKit: Synchronizing Public Database
Learn how to synchronize a public CloudKit database to your local Core Data, creating a mirror for offline access. Explore public vs private databases, and sync mechanisms.
Core Data with CloudKit: Troubleshooting
Explore common issues in Core Data with CloudKit projects, including sync errors, migration problems, & account issues. Learn debugging tips and solutions.
Core Data with CloudKit: Exploring the CloudKit Dashboard
Explore the CloudKit Dashboard: databases, environments, security roles, indexes, record types, zones, records, subscriptions, tokens, telemetry, & logs. Understand CloudKit functionalities for Core D...
Core Data with CloudKit: Syncing Local Database to iCloud Private Database
Explore Core Data with CloudKit: sync local database to iCloud private database. Learn setup, syncable model considerations, and selective data synchronization for your app.
Core Data with CloudKit: The Basics
Explore Core Data with CloudKit: seamless cloud storage & multi-device sync for your apps. Learn its advantages, limitations, and key concepts. Dive in now!
Mastering @AppStorage in SwiftUI
Explore efficient, secure @AppStorage usage in SwiftUI without third-party libs. Solve data type limits, tedious declarations, and injection issues. Includes central injection.
Using Persistent History Tracking in CoreData
Explore CoreData's Persistent History Tracking: Respond to changes, fetch, merge, & purge transactions. Includes code for batch ops, app groups, & CloudKit sync. Enhance your app!
Impressions After WWDC 2021
WWDC 2021: My take on iOS 15, Swift 5.5's async, SwiftUI's enhancements, CloudKit sharing, & Xcode's improvements. A developer's perspective.
Setting Up a Swift Development and Debugging Environment on Linux
Learn how to set up a robust Swift development & debugging environment on Linux. This guide covers installing Swift Toolchain, LSP, LLDB, SwiftFormat and SwiftLint for a cross-platform experience.
Creating a Blog with Publish: Plugin
Explore Publish plugins: enhance your blog with custom features. Learn adding tags, attributes, full-text search & more via examples. Dive into Publish's extension methods!
Creating a Blog with Publish: Theme
Explore Publish theme development using Plot, a Swift HTML generation tool. Learn to build a custom theme with type safety and a DSL-like syntax for your static website.
Creating a Blog with Publish: Getting Started
“Explore Publish, a Swift static site generator for developers. Learn installation, project setup, core concepts like sections, items, & themes. Get started now!”
202035 posts
Adapting to iPad in SwiftUI
Explore insights and lessons learned while adapting a SwiftUI app for iPad. Learn about device detection, layout adjustments, and navigation challenges. Key code snippets included.
Discussing CoreData Usage in SwiftUI
Explore lessons learned using CoreData in SwiftUI development over the past year. Discover insights on persistent storage, dynamic @FetchRequest, a transformation layer, and issues with NSPersistentCl...
Introducing Several Swift or SwiftUI Third-Party Libraries Used in Developing Health Notes 2
Explore the open-source Swift and SwiftUI libraries used in Health Notes 2, including SwiftUIX, Charts, Introspect, SwiftDate and more. Enhance your iOS development!
Development Musings for Health Notes 2.0 (Part 6)
The final stages of a project are often the most tedious.
Health Notes 2.0 Official Version is Complete!
After months of preparation and development, Health Notes 2.0 is finally here! Experience significant improvements in functionality, performance, and UI. Download now!
Development Musings for Health Notes 2.0 (Part 5)
The National Day and Mid-Autumn Festival holiday is about to end, and it's been a while since my last essay. In recent days, I have been continuing the development process while also expending conside...
Development Musings for Health Notes 2.0 (Part 4)
This week, I haven't had much energy or mood for coding. Over the last few days, building on the unified sheet management and real-time Form base, I completed a Sheet that can control the cancel gestu...
Creating a Sheet in SwiftUI with Controllable Cancel Gestures
Create a real-time form within a SwiftUI Sheet, manage cancel gestures, and respond to form status changes. Learn how to control Sheet dismissal based on user edits.
Development Musings for Health Notes 2.0 (Part 3)
Due to a family member's sudden illness, I have been frequently visiting the hospital recently, which has significantly limited my time for development.
How to Create a Real-Time Responsive Form in SwiftUI
Learn how to build real-time responsive forms in SwiftUI with MVVM. This article covers input validation, data handling, and creating a seamless user experience.
Pop Up Different Sheets in SwiftUI as Needed
Explore SwiftUI sheets, from basic usage to advanced techniques using item-based activation and reducer approaches to avoid crashes and improve code readability.
Development Musings for Health Notes 2.0 (Part 2)
Due to other miscellaneous matters this week, I could only guarantee about 2-3 hours per day for development, so there hasn't been much progress. However, fortunately, I don't have any explicit progre...
Discussing List and ForEach in SwiftUI
Explore SwiftUI List & ForEach: Discover performance issues with ForEach when handling large datasets & learn how to optimize with List or SwiftUIX. Learn when to use ForEach.
Development Musings for Health Notes 2.0 (Part 1)
Health Notes has been online since January 2020, and now more than half a year has passed. During this period, I have gained further understanding and knowledge of Swift, SwiftUI, CoreData, etc. Most ...
SwiftUIOverlayContainer — A SwiftUI Library for Creating Customized Popup Views
Create custom popup views easily with SwiftUIOverlayContainer. This library offers full control over animations, styles, & interactions, letting you focus on the view's content. Enhanced flexibility f...
Implementing the Side Menu for the iOS Mail App with SwiftUI
With the continuous improvement of SwiftUI 2.0, I feel it's time to make a major upgrade to my app. I've always wanted to implement an elegant side menu effect in my app similar to the iOS mail app, a...
HowTo —— File Import and Export in SwiftUI 2.0
Explore SwiftUI 2.0's native file import & export. Learn about fileImporter, fileExporter, and fileMover, handling permissions, and sample code.
HowTo —— Using ScrollViewReader to Scroll to Position in SwiftUI 2.0
Learn how to use ScrollViewReader in SwiftUI 2.0 for easy scroll positioning using IDs, a departure from offset-based solutions. Includes examples & drawbacks.
HowTo —— Using ProgressView in SwiftUI 2.0 to Display Progress Bars
Explore SwiftUI 2.0's ProgressView for creating spinning indicators and linear progress bars. Learn to customize styles and use code examples to enhance your app.
HowTo —— Handling Universal Links with onOpenURL
Learn how to handle Universal Links in SwiftUI 2.0 using onOpenURL, a view modifier that simplifies URL handling, unlike AppDelegate. See example code and usage tips.
HowTo —— Use ToolBar to Replace navigationbarItems in SwiftUI2.0
Explore SwiftUI 2.0's ToolBar, a versatile replacement for navigationbarItems, offering enhanced multi-platform support and cleaner syntax. Learn its basic usage and adaptations.
HowTo —— Use Link or openURL to open URL scheme in SwiftUI2.0
Learn how to use Link and openURL in SwiftUI 2.0 to open URL schemes and launch other apps. Includes code examples for Safari, mail, and phone calls.
HowTO —— SwiftUI 2.0 LazyGrid
Explore SwiftUI 2.0's native Lazy Grid control (LazyVGrid & LazyHGrid), replacing third-party libraries. Learn basic usage, mixing grids, and dynamic layouts.
HowTo —— How to Use Label in SwiftUI 2.0
Learn how to use SwiftUI 2.0's Label for combining images & text. Explore custom styles & a custom Label widget for more control. Includes code examples.
HowTo - SwiftUI 2.0 LazyVStack and LazyHStack
Explore SwiftUI 2.0's LazyVStack & LazyHStack for optimized view rendering. Improve app performance with lazy loading. See basic usage & continuous list examples.
HowTo - Displaying Maps in a View with Swift 2.0
Learn how to easily display maps in your Swift 2.0 app using MapKit. This tutorial covers adding map elements, tracking user location, and custom markers.
SwiftUI 2.0 — Apps, Scenes, and New Code Structures (Part 2)
Explore SwiftUI 2.0's data flow enhancements with @AppStorage, @SceneStorage, and updated property wrappers. Learn to manage state and build efficient, modular apps.
SwiftUI 2.0 — App, Scene, and New Code Structure (Part 1)
Explore SwiftUI 2.0's App & Scene protocols, new data flow structures, and preset Scenes like WindowGroup & DocumentGroup. Learn system event responses and more.
@FocusedBinding Overview
Explore SwiftUI's @FocusedBinding for data sharing between views. Learn how to use FocusedValueKey to modify and bind data directly, bypassing traditional methods. Discover its uses and limitations.
SwiftUI 2.0 — Commands (macOS Menu)
Learn how to add custom menus in macOS using SwiftUI 2.0's Commands. Explore CommandMenu, Buttons, keyboard shortcuts, and more for enhanced app functionality.
SwiftUI 2.0 —— Research on @StateObject
Dive into SwiftUI 2.0's @StateObject, a new property wrapper for managing reference type data. Learn its lifecycle differences from @ObservedObject through practical examples and when to choose each f...
Single Source of Truth in SwiftUI: Is ObservableObject Enough?
Explore SwiftUI's ObservableObject with a single source of truth. Learn how to boost efficiency by reducing dependencies and using alternative data management.
@State Research in SwiftUI
Explore SwiftUI's @State: its implementation, operation, and how it drives views with data. Learn to extend its functionality with examples. Dive into reactive programming.
Installation and Configuration of Vapor4
Learn to install Vapor CLI, create/debug Vapor projects, and deploy on macOS/Ubuntu. This guide is for Swift server-side devs using Vapor 4, Swift 5.2.
After Many Years, I Have Recreated My Blog
I created a blog using Hexo, primarily to document my insights and technical summaries from the development of Health Notes.