This guide explains why Apple now mandates UIScene for all UIKit apps built with the latest SDK after iOS 26, how UIScene differs from the traditional UIApplicationDelegate model, and provides step‑by‑step instructions—both automated and manual—for Flutter developers to migrate their iOS projects and plugins.
This tutorial explains UIStackView, Apple’s iOS 9 linear layout container that mirrors Flexbox concepts, covering axis, distribution, alignment, and spacing, showing how to add arranged subviews, hide them dynamically, adjust hugging and compression priorities, and noting its limitations such as lacking order, flex‑grow, and flex‑basis controls.
This guide explains how iOS 13’s UICollectionViewCompositionalLayout, together with Diffable Data Source, lets developers define items, groups, and sections using flexible size specifications, nested groups, orthogonal scrolling, custom and supplementary views, and background decorations to build complex, dynamic collection view layouts.
This tutorial shows how to create a SwiftUI bar chart, define a DataPoint model, and enhance its accessibility by conforming to AXChartDescriptorRepresentable and applying the accessibilityChartDescriptor modifier, enabling iOS 15’s Audio Charts feature that conveys chart values through pitch‑varying VoiceOver tones.
The article analyzes a crash introduced in iOS 16.1 where hiding and showing the system navigation bar triggers an NSLayoutConstraint activation failure in _UINavigationBarTitleControl, describes reproduction steps, investigates root causes, and presents a reliable fix by forcing layout updates before changing the bar’s hidden state.
The article discusses challenges and solutions for adapting iOS apps to right‑to‑left languages like Arabic, covering UI mirroring, layout adjustments using leading/trailing constraints, image flipping, text alignment and attributed strings, Unicode direction controls, collection view handling, RTL‑aware insets, navigation gestures, number formatting, and in‑app language switching with practical code examples.
This article reviews common iOS 15 UI adaptation problems—including UINavigationBar/UITabBar appearance, increased UITableView section header height, cell flickering caused by prefetching, and ProMotion refresh rate support—explains their underlying reasons, and provides concrete code solutions for developers using Xcode 13.
This article introduces an open‑source iOS project that replicates WeChat, detailing its architecture, implemented features such as messaging, contacts, discovery and personal pages, the third‑party libraries used, visual screenshots, current status and how developers can contribute.
This article explores how UIKit, CoreAnimation, CALayer, and CoreFoundation (including RunLoop) collaborate to perform static drawing and animation on iOS, illustrating the process with a button‑drawing example and detailed code snippets.
This article examines how UILabel stores its text‑related properties internally, reveals the role of the private _content object, and explains the interactions and pitfalls when using the text and attributedText properties in iOS development.
This article explains why iOS launch images often fail to update, reveals that the system caches multiple storyboard‑generated images in the app sandbox, and provides a step‑by‑step method to replace those cached files with custom‑generated ones, including code, orientation handling, and support for older iOS versions.
This article provides a comprehensive guide to creating iOS 14 App Clips, covering usage scenarios, SwiftUI and UIKit implementation, URL handling, Apple Connect configuration, binary download behavior, data sharing, permission management, code differences, testing, and submission considerations for mobile developers.
The article presents a Swift‑based declarative UI framework for UIKit that replaces AutoLayout with a flexible, CSS‑like style system, reactive state handling, and extensible layout nodes, enabling cleaner code, efficient animated lists, and improved development speed while planning future optimizations such as dirty‑checking and virtual layouts.
This article explains how JD’s dark‑mode foundation component enables iOS 9+ apps to support system and manual dark mode, detailing its architecture, integration steps, custom updaters, window‑level overrides, snapshot handling, and lessons learned for reliable night‑mode implementation.
The article clarifies frequent iOS development misconceptions—from unnecessary observer removal and deprecated NSUserDefaults synchronization to block retain‑cycle tricks, responder‑chain versus hit‑testing differences, GCD queue optimizations, safe main‑queue detection, and proper cancellation of dispatch blocks—offering practical code guidance.
This article explains the iOS Drag & Drop interaction model, covering its core concepts, system integration, multi‑touch features, and step‑by‑step implementation using UIKit APIs such as UIDragInteraction, UIDropInteraction, and NSItemProvider with Swift code examples.
This article walks iOS developers through six advanced Auto Layout techniques—including runtime constraint changes, touch‑tracking gestures, Dynamic Type support, Safe Area usage, proportional positioning with spacer views, and adaptive Stack View layouts—providing code samples, Interface Builder tips, and practical examples.
This guide walks iOS developers through adapting apps for iPhone X by explaining safe area concepts, UIKit auto‑adjustments, Auto Layout with UILayoutGuide, code‑level APIs, Home Indicator handling, and provides practical code snippets and visual references.
