Blog Archive

2018

May 21 Swift Lazy Property Initialization

Apr 30 Class Only Protocols In Swift 4

Apr 16 Stack Views And Multi-Line Labels

Apr 02 How To Get Equatable And Hashable For Free

Mar 19 Table Swipe Actions

Mar 04 Quick Guide To Property Animators

Feb 19 More Interface Builder Tips And Tricks

Feb 12 Replacing flatMap With compactMap

Jan 29 Creating Custom Xcode Project Templates

Jan 22 Masked And Animated Corners

Jan 08 Swift Non-Nil Values In An Array Of Optionals

2017

Dec 18 Changing Xcode Header Comment

Dec 11 Table View Separator Inset

Nov 27 URLSession Waiting For Connectivity

Nov 20 Swift Codable With Custom Dates

Nov 06 Swift 4 Access Levels

Oct 26 @objc Warnings Upgrading To Swift 4

Oct 16 Using Dynamic Type With Web Views

Oct 02 Easier Swift Layout Priorities

Sep 25 Updating Strings For Swift 4

Sep 18 Supporting iPhone X

Sep 11 Xcode 9 Vector Images

Aug 21 Using Swift Codable With Property Lists

Aug 14 Using A Custom Font With Dynamic Type

Jul 31 Avoiding Conflicts with System Gestures at Screen Edges

Jul 24 Reminder About Let Initialization

Jul 17 Changing Root View Layout Margins

Jul 03 Stack View Custom Spacing

Jun 26 Safe Area Layout Guide

Jun 12 WWDC 2017 Viewing Guide

May 29 Warning Converting Optional to String

May 22 Stack View Baseline Alignment Issue

May 15 Moving Core Data Files

May 08 Interface Builder Tip for Margin Constraints

May 01 Preserves Superview Layout Margins

Apr 24 Adding Playgrounds to Xcode Projects

Apr 03 Stack View Background Color

Mar 27 Loading Resources From A Framework

Mar 20 Variable Height Table View Header

Mar 13 Extra Space When Embedding Table Views

Feb 27 Container View Controllers

Feb 20 Swift Integer Quick Guide

Feb 13 Swift Hashable

Feb 06 Swift Equatable and Comparable

Jan 30 Cleaning up Core Data Fetch Requests

Jan 16 Easier Core Data Setup with Persistent Containers

Jan 09 Swift 3 and Comparing Optionals

Jan 02 Core Data Code Generation

2016

Dec 12 Batch Updating of Constraints

Dec 05 Stack View Constraint Conflicts When Hiding Views

Nov 28 Refresh Control Changes in iOS 10

Nov 21 Fun With Date Calculations

Nov 14 Adding Hardware Keyboard Shortcuts

Nov 07 Completion Handlers as an Alternative to Delegation

Oct 31 Local Notifications with iOS 10

Oct 24 Enum Raw Values and Failable Initializers

Oct 10 Updating Strings for Swift 3

Oct 03 Split View Controller Display Modes

Sep 26 Swift 3 Access Controls

Sep 19 openURL Deprecated in iOS10

Sep 12 Adding Swift Convenience Initializers

Sep 05 Auto Layout and Alignment Rectangles

Aug 16 Use High Contrast For Legibility

Aug 08 Objective-C Class Properties

Aug 01 Swift 3 Warning of Unused Result

Jul 25 Xcode Visual Memory Debugger

Jul 18 Slow App Startup Times

Jul 11 Pro Swift and Swift Algorithms

Jul 04 Privacy Settings in iOS 10

Jun 27 Auto Adjusting Fonts for Dynamic Type

Jun 20 WWDC 2016 Viewing Guide

Jun 06 Using Objective-C Lightweight Generics

May 30 Unregistering NSNotificationCenter Observers in iOS 9

May 23 Detecting low power mode

May 16 New Swift, Core Data and Cocoa Books

May 09 Swift Guide to Map Filter Reduce

May 02 Readable Width of Table View Cells

Apr 25 Static Tables and Dynamic Type

Apr 18 Readable Content Guides

Apr 11 Natural Text Alignment for RTL Languages

Apr 04 Stretching, Redrawing and Positioning with contentMode

Mar 28 Adapting Auto Layout Without Interface Builder

Mar 14 Scrolling Stack Views

Mar 07 Styling buttons using the Asset Catalog

Feb 29 Goodbye Spacer Views Hello Layout Guides

Feb 22 Pain Free Constraints with Layout Anchors

Feb 15 Hiding empty table view rows

Feb 08 Swift Documentation Quick Guide

Feb 01 Adapting Images for Size Classes

Jan 24 Proportional Spacing with Auto Layout

Jan 18 Swift Named Parameters

Jan 11 Using nullable to annotate Objective-C code

Jan 04 How to percent encode a URL String

2015

Dec 21 Finding Non-localized Strings

Dec 14 Swift String Cheat Sheet

Dec 07 How to Dereference an Unsafe Mutable Pointer in Swift

Nov 30 Making Popovers Adapt to Size Classes

Nov 22 Split views and unexpected keyboards

Nov 16 Swift Optional Protocol Methods

Nov 09 Quick Guide to Swift Delegates

Nov 01 Unwind segues as an alternative to delegation

Oct 26 cellForRowAtIndexPath in Four Lines

Oct 19 Creating scaled images with PDF Vectors

Oct 12 3D Touch Peek and Pop

Oct 05 Adding 3D Touch Quick Actions

Sep 27 Using Size Classes to Hide Stack View Contents

Sep 21 Did ATS Change Since the GM?

Sep 14 App Transport Security

Sep 07 Querying URL Schemes with canOpenURL

Aug 31 Xcode code coverage

Aug 24 Checking API Availability with Swift

Aug 17 Using Identifiers to Debug Autolayout

Aug 10 Dynamic Dispatch and Whole Module Optimization

Aug 03 A Size Class Reference Guide

Jul 27 Swift Whole Module Optimization

Jul 20 Refactoring with Storyboard References

Jul 13 Using the Address Sanitizer

Jul 06 Adapting Stack Views with Size Classes

Jun 29 iOS 9 Proportional Numbers

Jun 21 Easier Auto Layout with Stack Views

Jun 15 iOS 9 Slide Over and Split View

Jun 08 IB_DESIGNABLE Custom Views in Interface Builder

Jun 01 UIScreen bounds in iOS 8

May 25 Change the Width of Master View in Split View Controller

May 18 Animating Autolayout Constraints

May 06 Sorting an Array of Dictionaries

May 04 Default property attributes with ARC

Apr 26 Search bar not showing without a scope bar

Mar 25 Creating an OS X Core Data Helper App

Mar 09 Useful OS X Resources for iOS Developers

Feb 16 Updating to the iOS 8 Search Controller

Jan 26 Stanford iOS 8 Course With Swift

2014

Dec 24 Using a Launch Screen Storyboard

Dec 07 Modules and Precompiled Headers

Nov 02 Continuous Integration With Xcode Server

Sep 05 UIAlertController Changes in iOS 8

Aug 28 Open Settings URL

Aug 19 Xcode 6 Objective-C Modernization

Aug 18 Detecting Layout Problems with a Pseudolanguage

Aug 13 Creating a CocoaPod

Aug 07 Self Sizing Table View Cells

Jul 16 iOS 8 Camera Privacy Settings

Jul 15 Reset Location and Privacy Permissions

Jul 13 iOS 8 Adds Hebrew Speech Synthesis

Jun 15 iOS Core Animation Advanced Techniques

May 13 Reading QR Codes

Apr 16 Running Custom Clang Analyzer Builds

Apr 15 Data Detection for Links

Apr 13 Format String Issue Using NSInteger

Mar 19 Effective Objective-C 2.0

Mar 12 Xcode Debugger Quick Look

Mar 07 Enumerating Strings By Sentence

Feb 14 Table View Cells with Varying Row Heights

Jan 19 Larger Dynamic Type For Accessibility

Jan 08 Synthesized Speech From Text

Jan 03 Motion Effects

2013

Dec 30 Scaling Dynamic Type with Font Descriptors

Dec 17 Supporting Dynamic Type

Sep 28 Collection View Default Gestures

Sep 27 UIPopover arrow not repositioned correctly on rotation

Aug 04 Missing The Xcode Automatic Configuration Service

Jul 22 Using Launch Arguments To Test Localizations

Jun 30 Xcode Interface Builder Tips

Jun 24 Migrating to the new Twitter search API

Jun 18 UIRefreshControl Fun and Games

Jun 10 WWDC Keynote 2013

Jun 01 Checking version and device when restoring state

May 23 Restoration Classes and UIWebViews

May 21 State Preservation and Restoration

Apr 07 Bug Table View State Not Restored When Embedded In Navigation Controller

Apr 05 Downloading Old iOS SDK Documentation

Mar 07 Core Data by Marcus Zarra

Mar 03 Xcode 4.6 Recommended Build Settings

Feb 23 Apple Webpage Touch Icons

Jan 01 Open With Menu Duplicates

2012

Dec 31 Supporting the 4-inch Retina Display

Oct 08 Presenting View Controllers

Sep 11 VoiceOver Bug and iOS 5 TableViews Revisited

Sep 07 Prototype Table View Cells Not Working With VoiceOver

Sep 06 Adding A Search Bar To A Table View With Storyboards

Aug 24 Using Appearance Proxy To Style Apps

Aug 13 Stop Xcode Automatic Termination

Aug 09 Keeping Mountain Lion Awake

Aug 01 Automatic Property Synthesis with Xcode 4.4

Jul 09 Formatters and Locale Changes

Jul 05 Customizing Appearance With Resizable Images

Jun 21 Storyboard Segues

Jun 20 WWDC 2012 Session Videos

Jun 14 Using Number Formatters

Jun 11 iOS 6 WWDC Keynote Updates

Jun 08 Compressing PNG Images

Jun 07 Prototype Table Cells and Storyboards

May 28 Making Xcode behave

May 25 Making Some Changes

May 14 Detecting VoiceOver Status Changes

May 10 Programming iOS 5 by Matt Neuburg

May 07 Static Table Views with Storyboards

Apr 27 Xcode Balancing Brackets For Method Calls

Apr 23 VoiceOver Accessibility

Apr 06 Splitview controller is expected to have a master view controller

Mar 16 Updating for iPad retina display

Feb 29 Git branch management with Xcode

Feb 17 Updating to Xcode 4.3

Feb 07 Remote Packet Capture for iOS devices

Jan 30 Network Link Conditioner

Jan 19 Core Data Queries Using Expressions

Jan 10 Xcode 4.2 building for iOS 3.1.x and older devices

Jan 04 UIStepper control

2011

Dec 14 UIAlertView changes in iOS 5

Nov 24 Creating Gesture Recognizers with Interface Builder

Nov 16 Mail app style Split View Controller with a sliding master view

Nov 16 Stanford iOS development course updated for iOS 5

Nov 01 Settings Radio Group Element

Oct 24 Sync preference data with iCloud

Oct 19 iOS 5 Split View Controller Changes

Oct 18 Apple TV Update after running beta

Oct 11 App Store notifications

Oct 06 Stay Hungry. Stay Foolish

Oct 04 iOS 5 apple event

Sep 20 Disabling Clang Compiler Warnings

Sep 14 Xcode 4 DerivedData and cleaning the build directory

Aug 30 Book Recommendations

Aug 29 iTunes Connect App Status Update

Aug 26 Using UIActionSheet for external actions

Aug 22 Using pattern images to set background views

Aug 08 Printing Headers and Footers with a Print Page Renderer

Aug 04 Basic Printing with AirPrint

Jul 28 Xcode Project Modernization

Jul 20 Hello Lion, Goodbye Xcode 3

Jul 13 Supporting older versions of iOS

Jul 03 Passing Arguments with Xcode 4

Jun 27 Using Xcode 4 Refactor to rename a class

Jun 23 GitHub for mac

Jun 20 Thoughts on iOS 5

Jun 19 Remember to backup your keychain

Jun 18 UYLPasswordManager clearing the cache

Jun 16 Searching Twitter with iOS

Jun 12 NSFileManager defaultManager is not thread safe

Jun 02 iOS and Keychain Migration and Data Protection - Part 3

Jun 01 iOS and Keychain Migration and Data Protection - Part 2

May 27 iOS Keychain Migration and Data Protection - Part 1

May 17 Dealing with Failure in Objective-C initializers

May 16 PragProg Rails Book Sale

May 10 Localizing NIB files with Xcode 4

Apr 26 Use of properties by Xcode 4 templates

Apr 22 Private ivars

Apr 21 Stanford iOS App Development course

Apr 19 Violating user privacy in mobile apps

Apr 09 Objective-C Fundamentals

Mar 28 Interface Builder Outlet Collections

Mar 24 Upgrading to Xcode 4

Mar 21 Compiler Options in Xcode - GCC or LLVM?

Mar 09 Xcode 4 is here and in the App Store!

Mar 08 Using heapshots to find abandoned memory

Mar 01 Xcode conditional breakpoints

Feb 28 Speeding up table view cell loading with UINib

Feb 21 Xcode breakpoint actions

Feb 13 DRYing your instance variables

Feb 08 Understanding your (Objective-C) self

Feb 04 Xcode 4 GM seed

Jan 24 Using the Mac OS X automounter

Jan 12 iOS 4.3 beta

Jan 11 iOS 4.2.5 and Xcode 4 Preview 6

Jan 03 App Store Whitespace Validation Failure with Xcode 3.2.5

2010

Dec 23 Creating iPhone Ad Hoc Distribution builds

Dec 17 Localizing iPhone App Settings Strings

Dec 16 Localizing iPhone App Icon is not supported

Dec 15 Localize iPhone Application Name

Nov 28 Ad inventory unavailable with iOS 4.2

Nov 27 iAd Framework updates for iOS 4.2

Nov 23 Xcode Unknown iOS detected

Nov 22 Xcode 3.2.5 Base SDK

Nov 22 iOS 4.2 is here

Nov 11 Programming Ruby The PickAxe Book

Oct 25 Checking RSS Feeds for New Posts

Oct 19 Searching arrays with NSPredicate and blocks

Oct 16 Parsing an RSS Feed using NSXMLParser

Oct 14 Reading an RSS Feed

Oct 05 Xcode Build and Analyze broken for simulator

Oct 04 Swiping to delete rows from a table

Oct 02 Dynamically loading new rows into a table

Sep 28 Design Patterns in Ruby

Sep 23 Adding Booleans to Objective-C Arrays and Dictionaries

Sep 21 Apple Magic Trackpad

Sep 16 Placing iAd banners at the top of a table view

Sep 15 iOS SDK 4.2 Beta

Sep 14 Objective C anonymous categories

Sep 13 Repeating an iOS local notification

Sep 07 Installing multiple Xcode versions

Sep 05 iTunes 10 Toolbar Buttons

Sep 03 Xcode and iOS Updates

Aug 31 iTunes Connect App Status

Aug 30 Popping Tabbed Navigation Controllers

Aug 18 Setting iPhone Application Build Versions

Aug 12 The version of iPhone OS is too old

Aug 11 Apple iOS SDK 4.0.2 and 3.2.2

Aug 09 Reachability Updates

Aug 08 Checking network connectivity when displaying iPhone iAds

Aug 04 Application Icon Troubles

Jul 31 Adding Local Notifications with iOS 4

Jul 27 Filtering arrays with NSPredicate

Jul 23 Xcode 4 developer preview now open to all developers

Jul 22 iPhone Analytics Updates and News

Jul 21 iPad table backgroundView

Jul 19 Signing up for iAds

Jul 15 Juggling iOS versions

Jul 14 iOS SDK 4.1 beta

Jul 13 Adding iAds to an application in an afternoon

Jul 10 More on Validate Built Product

Jul 07 Flurry SDK 2.5 Issues

Jul 05 Tracking background memory usage of iOS 4 apps

Jul 04 Adding iOS4 Multitasking Support

Jun 29 All new App Store submissions must be with iOS 4

Jun 29 Updating for the iPhone 4 retinal display

Jun 26 This copy of iTunes will expire

Jun 24 Missing wallpapers when using iOS4 GM build

Jun 22 Xcode 3.2.3 Instant Setup

Jun 21 iAd Privacy Policy

Jun 21 Symbol not found errors in universal apps

Jun 21 Xcode 3.2.3 and iOS 4 SDK released

Jun 19 Requesting a new development certificate

Jun 17 WWDC2010 Videos now available in iTunes

Jun 14 Using an image for the UISplitViewController popover button

Jun 11 Flurry to release new SDK next week to comply with 3.3.9

Jun 08 Xcode 4 on the way

Jun 06 Delegation or Notification

Jun 03 What To Do About Analytics Now?

May 31 Automatically Running Unit Tests

May 30 Renewing provisioning profiles

May 29 Git Cheat Sheet

May 27 Cocoa Design Patterns

May 26 Unit Testing with OCUnit

May 19 Managing User Preferences within an iPhone App

May 18 Adding a settings bundle to an iPhone App

May 13 Selecting images in Universal apps

May 12 Testing universal app for iPhone

May 11 Jakob Nielsen on iPad Usability

May 10 Fixing Xcode default development region

May 07 Conditional compilation for debug or distribution builds

May 06 Which iPhone OS Version should your app support

May 05 Formatting source code when posting with MarsEdit 3

May 04 iPad Gestures

May 03 iPad Modal View Controllers

Apr 28 Keychain duplicate item when adding password

Apr 24 Converting to a Universal App (Part III)

Apr 21 Xcode Build Active Architecture Only

Apr 19 Converting to a Universal App (Part II)

Apr 19 The future of analytics on the iPhone

Apr 18 Finally a reason to buy a magic mouse?

Apr 14 Cocoa Factory Classes and Autorelease

Apr 13 Cocoa Naming Conventions for Memory Allocation

Apr 10 Xcode localization frustrations

Apr 09 Setting Xcode build version to Git commit name

Apr 08 As one NDA departs another arrives

Apr 08 Final goodbye to Subversion

Apr 08 Universal apps get higher billing in iTunes

Apr 07 Converting to a Universal App (Part I)

Apr 06 Universal apps or iPad HD

Apr 05 Application icon and image files

Apr 04 Archiving builds with Xcode Organizer

Apr 03 Xcode 3.2.2 Validate Built Product

Apr 03 the iPad NDA is finally lifted

Apr 03 Keychain group access

Mar 29 Simple iPhone Keychain Access

Mar 24 Using categories with private methods

Mar 23 Using categories with core data

Mar 22 AirMail Push Notifications

Mar 17 Multiple Xcode targets and info.plist

Mar 16 Downloading iPhone app data with the organizer

Mar 15 Code signing error CSSMERR_DL_MISSING_VALUE

Mar 15 NSFetchedResultsController and sort performance

Mar 12 Finding memory leaks in Xcode

Mar 11 Debugging core data on the iPhone

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