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Creating an iMessage-Style Input Accessory View in SwiftUI
SwiftUIKeyboardUITextField
Learn how to create a custom input accessory view that stays above the keyboard, similar to iMessage's input bar.
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- 02
Firebase Crashlytics dSYMs Not Uploading in Xcode 15+
FirebaseXcodeCrashlyticsDebuggingLearn how to fix the Firebase Crashlytics dSYM files not properly being uploaded to Firebase after upgrading to Xcode 15/16.
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Aligning Text in SwiftUI
SwiftUITextLayoutUILearn how to align single and multiline text in SwiftUI.
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How to make a SwiftUI List scroll automatically?
SwiftUIScrollViewListUILearn how to use ScrollViewReader and ScrollViewProxy to scroll a SwiftUI list to a specific item automatically.
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Detect when a context menu is open in SwiftUI
SwiftUIContextMenuUIGesturesLearn how to detect when a context menu is open in SwiftUI.
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Creating a WebView with a transparent background in SwiftUI
SwiftUIWebViewUIKitStylingLearn how to create a WebView/WKWebView with a transparent/clear background in SwiftUI.
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Adding a TextField to an Alert in SwiftUI
SwiftUITextFieldAlertUILearn how to accept user input in an alert using TextField or SecureField.
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Character Limit for TextEditor or TextField in SwiftUI
SwiftUITextFieldTextEditorValidationLearn how to create a modifier that limits the characters that can be entered in a TextEditor or TextField view in SwiftUI.
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Generating a Random Emoji in Swift
SwiftUnicodeStringHow to generate random emoji characters in Swift using Unicode scalar ranges.
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Getting Current Disk Usage in Swift
SwiftStorageiOSHow to check available and total disk space on iOS devices using URL resource values.
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How to scale text to fit its parent view with SwiftUI
SwiftUITextLayoutUILearn the ways to scale a text view's font size to fit its parent view in SwiftUI.
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How to display a GIF from a URL in SwiftUI
SwiftUIImagesWebViewUIKitLearn how to use a WKWebView as a quick way to load a GIF from a URL and display it in a SwiftUI view.
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Creating custom styles for DisclosureGroup views
SwiftUIUIComponentsStylingLearn how to use DisclosureGroupStyle to create custom DisclosureGroup views in SwiftUI.
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How to force navigation bar to show background in SwiftUI?
SwiftUINavigationUIStylingLearn how to force the navigation bar to show a background color in SwiftUI.
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Detecting if SwiftUI is running in a Preview in Xcode
SwiftUIXcodePreviewsDevelopmentLearn how to detect if a SwiftUI app is running in a Xcode Preview.
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How to get the name of an emoji in Swift
SwiftTextUnicodeEmojiLearn how to use kCFStringTransformToUnicodeName to get the system name for any emoji.
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Keep the Software Keyboard Visible in iOS Simulators
SwiftSimulatorKeyboardLearn how to prevent typing with your physical keyboard from dismissing the software keyboard when running your Swift app in the iOS simulator.
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Using DisclosureGroup to hide and show content
SwiftUIUIComponentsHow to use the SwiftUI DisclosureGroup view to create collapsable content.
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Key-Value Observing Deep Dive
Objective-CFoundationAdvancedKVO lets you observe property changes without delegation or notifications. Here's how it works under the hood and how to use it correctly.
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Blocks - Closures Before Swift Existed
Objective-CConcurrencyFundamentalsBefore Swift closures, Objective-C had blocks. The syntax is different, but the power is the same. Here's how to use them effectively.
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The NSObject Class Hierarchy Explained
Objective-CFoundationFundamentalsEvery Objective-C class inherits from NSObject (usually). Here's what NSObject provides and why it matters for every object you create.
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Categories vs Class Extensions in Objective-C
Objective-CFundamentalsBest-PracticesBoth let you add methods to classes, but categories and class extensions serve different purposes. Here's when to use each.
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Message Passing - The Heart of Objective-C
Objective-CRuntimeFundamentalsUnlike C++ virtual methods, Objective-C uses dynamic message passing. Understanding this mechanism unlocks the language's full power.
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Understanding Retain Cycles in Objective-C
Objective-CMemoryARCRetain cycles are the most common memory leak in Objective-C. Learn how they form, how to detect them, and patterns that prevent them.
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Namespacing in Objective-C - The Prefix Problem
Objective-CBest-PracticesArchitectureObjective-C lacks namespaces, so the community invented conventions. Here's how prefixes and other patterns help avoid collisions in a flat symbol space.
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The 10 Longest Symbol Names in Apple's Frameworks
Objective-CHumorApple-FrameworksObjective-C is famous for verbose naming. Let's celebrate (or mourn) the longest method and class names hiding in Apple's standard libraries.
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Why Objective-C Has try-catch But Nobody Uses It
Objective-CError-HandlingBest-PracticesObjective-C supports exception handling with @try/@catch, but the community settled on NSError pointers instead. Here's why.
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Ways to Shoot Yourself in the Foot with Method Swizzling
Objective-CRuntimeDebuggingSwizzling is powerful but dangerous. Here are the common pitfalls and how to avoid turning your clever hack into a debugging nightmare.
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The Power of Method Swizzling in Objective-C
Objective-CRuntimeAdvancedMethod swizzling lets you replace method implementations at runtime. Here's how it works and when this powerful technique shines.
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Class Clusters in Objective-C: The Foundation Pattern
Objective-CDesign-PatternsFoundationUnderstand the class cluster pattern that makes NSString, NSArray, and NSDictionary work, and learn how to implement your own.
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