Example code for the new O'Reilly book, Programming Android

A simple keypad lock screen for the iPad

UITableView example which shows a tree hierarchy in one tableview, clickable expand/collapse cells.

PSGridScroll is a view control that lays out a list of child views into a scrollable grid. An iPad example project is included.

A tree graph view control for iPad applications. This is a port of the sample code from Max OS X to iOS (iPad).

A simple keypad lock screen for the iPad

Generate rich text views using CoreText as wrapper for html-like tag text.

Stupidly simple ObjC interface for Read It Later, Instapaper, and Delicious

Practical real-world dates

A Math expression parser in Objective C

Objective-C Math Expression Parser

A drop-in UIViewController subclass that automatically manages switching between different view layouts for portrait and landscape orientations.

A UIColor Category that takes in the color strings output from Digital Color Meter

iPhone color picker view with brightness control and delegation support. Handles touch events internally. Easy to customize!

Cool, glassy iOS buttons with only one color to set.

Smooth & fast line drawing from touch inputs for UIViews using Quartz

Views Transition Library for iOS

iPhone/iPad chart library

iPhone/iPad chart library

CoconutKit is a library of high-quality iOS components

QuickDialog - Quick and easy dialog screens for iOS

An Objective-C library that contains an alert suite (e.g. A ticker bar, Growl Notifications)

A sample OpenGL app that renders a model of the Earth

PSGridScroll is a view control that lays out a list of child views into a scrollable grid. An iPad example project is included.

An open source Objective-C interface component that makes use of the CoreText framework to render static text content using a highly customisable markup syntax.

A tree graph view control for iPad applications. This is a port of the sample code from Max OS X to iOS (iPad).

The awesome and free GTD Tool Wunderlist

A native 2D OpenGL game framework for iOS. Inspired by the ActionScript 3.0 API

A clone of the UIImagePickerController using the Assets Library Framework allowing for multiple asset selection