iOS
iOS 8 Push Notifications: Fix registerForRemoteNotificationTypes Deprecation
Push notifications on iOS 8.
iOS
Support Native iPhone 6 and 6 Plus Resolutions with Launch XIBs in iOS 8
By default all the apps (even compiled with Xcode 6 and iOS 8) will run in a scaled mode on both iPhone 6 & iPhone 6 plus.
iOS
Xcode: Set iOS App Display Name per Build Configuration
Having a different application name for release and development builds.
iOS
Fix fileExistsAtPath Always Returning NO in iOS 8 Cache Directories
Generating the path dynamically with NSSearchPathForDirectoriesInDomains.
iOS
NSURL URLWithString vs fileURLWithPath: Loading Local Files Correctly in iOS
A frequent mistake when playing a local video using [AVAudioPlayer initWithContentsOfURL:url] is to use URLWithString instead of fileURLWithPath.
iOS
Stack Views on iOS 8 with Auto Layout (Without UIStackView)
While starting iOS 9 we have UIStackView, it is a little bit tricky to stack views vertically or horizontally.
Xcode
Xcode 8 Core Data: Create NSManagedObject Subclasses in a Swift Project
In Xcode 8, it is no longer possible to create NSManagedObject subclasses...
Swift
Swift 3 Compiler Segmentation Fault 11: Generics and Nested Functions Workaround
The following code is causing a compiler crash when compiled with Swift 3 and Xcode 8...
Swift
Optimize UICollectionView and UITableView Updates with Batch Inserts in Swift
Collection view is highly optimized and works great out of the box.
Swift
ReactiveSwift Playground Setup: Fix “No Such Module ‘Result’” in Xcode
According to the documentation, to use ReactiveSwift.playground the following steps must be performed...
Xcode
Fix UICollectionView “Terminating with Uncaught NSException” Crashes
ne of our views that contains a UICollectionView started crashing once in a while...
Swift
Fix Unwanted Top Padding in UICollectionView on iOS 10
On iOS 10, a collection view embedded in a view has unexpected padding at the top.
Swift
UICollectionView Self-Sizing Cells: Dynamic UILabel Layout on iOS 10
All we needed was a simple UICollectionView with just one cell that contained a label ...
iOS
Fix Auto Layout "Unable to Satisfy Constraints" for Fixed-Height Views in Cells
We needed a collection view cell that contained an image view and a label.
RxSwift
RxSwift: How to Avoid Memory Leaks with DisposeBag and Resource Tracking
RxSwift is a powerful framework and, as always, with power comes responsibility.
iOS
Symbolication in iOS Apps: Use dSYM and DWARF to Decode Crash Logs
Symbolification is the process of mapping machine addresses into the source code. The tricky part is that by default .DSYM file is only generated for release builds.
Swift
Create a Swift Framework That Uses C Code in Xcode
How to create a framework that uses C with Xcode
SwiftUI
Learn SwiftUI by Building a Recipe Book App for iOS & macOS
A step-by-step guide to building a modern SwiftUI Recipe Book app for iOS and macOS.
SwiftUI
SwiftUI @StateObject vs @ObservedObject: The ObservedOrStateObject Pattern
How we built ObservedOrStateObject to let SwiftUI views own or observe view models without duplicating code.
SwiftUI
SwiftUI Alerts: Fixing Bugs When Multiple Alerts Collide
SwiftUI silently ignored save error alerts once a second alert existed, and this post captures what we learned in the Advanced SwiftUI: Lessons From Mistakes series.
SwiftUI
SwiftUI @Published Crash: “Pointer Being Freed Was Not Allocated” Explained
During test teardown we hit a repeatable 'pointer being freed was not allocated' crash while deallocating a @MainActor ObservableObject, and this post explains why we treated it as a Swift runtime edge case instead of rewriting our architecture.
SwiftUI
SwiftUI @MainActor Initializers: Safe Default Parameters and Actor Isolation
After enabling stricter Swift concurrency checks, we started seeing main-actor isolation errors from @MainActor initializers that used default parameter values. This post explains why default parameter expressions are nonisolated and how to fix the pattern by moving defaults into the initializer body.
SwiftUI
DependencyContainer Malloc Crash in Tests – Post-Mortem
Under XCTest teardown we hit a repeatable 'pointer being freed was not allocated' malloc crash when deallocating async/Combine-heavy DependencyContainer and view models. This post explains what was happening and why we fixed it by deliberately leaking those objects in DEBUG tests only.
