The best way to manage library dependencies in Objective-C projects.

Guidelines for handling icon files for iPhone-only apps, iPad-only apps, and universal apps.

The "View Hierarchy" window is a runtime inspector that allows you to examine the hierarchy of NSView objects in the windows of your application. I.e. it is intended as a debugging tool, or just as an aid to understanding.

A set of open source tools that complement Xcode and Interface Builder. Interactive introspection, manipulation and scripting of Cocoa objects.

The goal of the x-callback-url specification is to provide a standardized means for iOS developers to expose and document the methods they make available to other apps.

This project provides a single-step build-script as well as ready to use binaries for iOS devices and simulator of the following libraries: OpenSSL, Cyrus SASL, libEtPan, zlib, libssh2, cURL

AsyncSocket is an asynchronous socket networking library for Cocoa.

From your Objective C classes to your final TableView application in less than 5 minutes.

Ingredients is a free browser for Apple's documentation.

Code Pilot extends Xcode by adding swift navigation through files and other parts of your project. Thanks to a fuzzy search mechanism and an advanced scoring system for the search results, Code Pilot tries to guess what's on your mind immediately after you've typed just a few characters. Its ultimate goal is to keep you in flow, not distracting you when you change your focus from one piece of code to another. (via nguyenvu)

Completion Dictionary is a free Xcode plugin that enhances Xcode’s built-in code completion mechanism. You simply type a few letters - either the abbreviation of a macro or the initials of a symbol name - and press the completion shortcut. Completion Dictionary will do the rest.

There are a few different options for porting Objective-C/Cocoa applications to Windows. Each option has different advantages and offers different capabilities.

If you search around on the internet most of the solutions getting such a look revolve around making your own UIView and adding this as headerView to a section. Now if you want the cell on the right side to still behave like a cell is expected to behave then you have lots of work ahead of you

A cheatsheet for Xcode

This page contains some Cocoa/Objective-C source code for fellow Mac OS X developers.

ParseKit is a Mac OS X Framework written by Todd Ditchendorf in Objective-C 2.0 and released under the MIT Open Source License. ParseKit is suitable for use on Mac OS X Leopard, Snow Leopard or iPhone OS. ParseKit is an Objective-C implementation of the tools described in "Building Parsers with Java" by Steven John Metsker. ParseKit includes additional features beyond the designs from the book and also some changes to match common Cocoa/Objective-C conventions.

The Objective-C Runtime is one of the overlooked features of Objective-C initially when people are generally introduced to Cocoa/Objective-C. The reason for this is that while Objective-C (the language) is easy to pick up in only a couple hours, newcomers to Cocoa spend most of their time wrapping their heads around the Cocoa Framework and adjusting to how it works.

Key-value coding (KVC) is a way of decoupling a generic action from the specific properties it may need to act upon. It is most commonly associated with the NSKeyValueCoding protocol but there are a number of other ways to achieve the same effect. In this post, I look at why key-value coding is important and show you 5 different ways — each with their own particular advantages — to implement this pattern.

A great illustrated overview of Core Data

InAppSettings provides a view controller that displays the application's Settings.bundle as it appears in the iPhone settings. Allowing the same preferences in app and in the iPhone settings.

TBXML is a light-weight XML document parser written in Objective-C designed for use on Apple iPhone / iPod Touch devices. TBXML aims to provide the fastest possible XML parsing whilst utilising the fewest resources. This requirement for absolute efficiency is achieved at the expence of XML validation and modification. It is NOT possible to modify and generate valid XML from a TBXML object and NO validation is performed whatsoever whilst importing and parsing an XML document.

Detect iDevice version

Comes w/ code

I was asked three times last week how I find how long an activity takes on the Mac and the iPhone. Here is the most accurate method that I know of

It is very easy, when developing on a new operating system, to create projects that won't run on any previous OS version. To ensure backwards compatibility, there are Xcode and gcc options that allow you to build while maintaining support for earlier OS versions. In this post, I'll look at the ways in which this compatibility is controlled and some of the new ways it can go wrong on Snow Leopard.

In this post, I look at a UITableView on the iPhone which loads its data from a server and look at how its performance scales from single rows to tens of thousands of rows. I'll examine which aspects of the iPhone scale well and which become a burden as a displayed dataset moves from trivially sized to large sizes.

There is no single-line method for converting between formatting date strings and date objects in Cocoa — the API opts for flexibility rather than simplicity. Unfortunately, this combines with documentation that omits, misdirects and occasionally misinforms, making NSDateFormatter one of the more confusing classes for new Cocoa programmers. In this post, I'll try to address some of the documentation issues and I'll present some methods that will turn NSDate into a formatted string or convert between date strings in a single method.

A drop-in replacement for NSAlert

A series of articles about Cocoa & Objective-C

Cocoa class that makes it easier for you to work with images: load them in the background, caches to the disk, set placeholder while loading.

A collection of Cocoa source code to provide frequently used functionalities: beta expiration, disk image warning, token cloud, navigation stack, etc

Tập hợp class về network cho ứng dụng viết bằng Cocoa và Objective-C

SQLite wrapper cho Cocoa, bản viết lại của FMDB

Viết HTTP server để chạy trên iPhone/Mac

Từ social APIs đến các thư viện về networking và web service

Một số element thông dụng cho Cocoa app

Vài screencast miễn phí của pragprog

Thủ thuật với gdb

Danh sách một số blog về lập trình Cocoa

Framework để code giao diện HUD cho ứng dụng Cocoa

Thủ thuật cho Xcode