iPhone OS Code Samples

Below is a list of  iPhone OS Code Samples from Apple. Some of the samples might have been updated since I updated this list and there might be a few new samples so check the Apple Developer site for the latest information.  QuartzDemo Demonstrates many of the Quartz2D APIs made available by the CoreGraphics framework. Last change: Added masking and clipping demos. Made some of the demos dynamic. Cleaned up various inconsistencies in the code.

PageControl This application demonstrates use of UIScrollView's paging functionality. Last change: Fixed issue where scrolling by dragging the UIScrollView did not update the UIPageControl.

SimpleFTPSample Demonstrates simple FTP operations using the NSURLConnection and CFFTPStream APIs. Last change: Added code that demonstrates how to reinterpret the names in an FTP listing using a different encoding. Also fixed a couple of minor bugs in the ListControllers table handling.

WeatherMap Demonstrates the use of the MapKit, displaying a map view with custom MKAnnotationViews. Last change: New document.

QuickContacts Demonstrates how to use the Address Book UI controllers and various properties. Last change: New document.

CurrentAddress Demonstrates basic use of MapKit, displaying a map view and setting its region to current location. Last change: New document.

WorldCities Demonstrates basic use of MapKit, including displaying a map view and setting its region. Last change: New document.

FastEnumerationSample Demonstrates how to implement the NSFastEnumeration protocol. Last change: New document.

LazyTableImages Asynchronously downloads images for a UITableView so the UI is more responsive. Last change: New document.

Reflection This sample shows how to implement a "reflection" special effect on a given UIImageView. Last change: Fixed a memory leak in CreateGradientImage.

LocateMe This sample uses CoreLocation to get and track the user's location. Last change: Corrected backwards comparison of horizontal accuracy in GetLocationViewController.

GLTextureAtlas Demonstrates how to use a texture atlas to draw multiple objects with different textures simultaneously. Last change: Updated for iPhone OS 3.1. Use CADisplayLink as the preferred method for controlling animation timing, and fall back to NSTimer when running on a pre 3.1 device where CADisplayLink is not available.

MusicCube Demonstrates basic use of OpenGL ES, OpenAL, and Audio File Services for manipulating sound in a 3D environment. Last change: Updated for iPhone OS 3.1. Use CADisplayLink as the preferred method for controlling animation timing, and fall back to NSTimer when running on a pre 3.1 device where CADisplayLink is not available.

GLSprite Shows how to create an OpenGL texture from image data in a Core Graphics bitmap context. Last change: Updated for iPhone OS 3.1: Set texture parameters before creating the texture. This will save texture memory and texture loading time. Use CADisplayLink as the preferred method for controlling animation timing, and fall back to NSTimer when running on a pre 3.1 device where CADisplayLink is not available.

GLPaint Demonstrates how to support single finger painting using OpenGL ES. Last change: Updated for iPhone OS 3.1. Set texture parameters before creating the texture. This will save texture memory and texture loading time. Use the shake API available in iPhone OS 3.0 and later. Made the sample xib-based.

GLGravity Demonstrates how to use the UIAccelerometer class in combination with OpenGL ES rendering. Last change: Updated for iPhone OS 3.1. Use CADisplayLink as the preferred method for controlling animation timing, and fall back to NSTimer when running on a pre 3.1 device where CADisplayLink is not available. Made the sample xib-based.

AddMusic Demonstrates how to play audio items that are synced from a user's desktop iTunes library. Last change: Minor changes.

TheElements TheElements is an iPhone application that provides access to the data contained in the Periodic Table of the Elements. Last change: Changed the target setting's "Code Signing Identity" to the proper value.

SimpleURLConnections Demonstrates simple networking using the NSURLConnection API. Last change: New document.

UICatalog This sample is a catalog exhibiting many of the UI elements found in the iPhone's UIKit framework. Last change: Improve the accessibility of UICatalog through use of the iPhone Accessibility API.

SimpleNetworkStreams Demonstrates networking using the NSStream API. Last change: Updated to bring the code and user interface in line with other related samples.

iPhoneExtAudioFileConvertTest Demonstrates using the ExtAudioFile API to convert from one audio format and file type to another. Last change: New document.

oalTouch iPhone example to play a single audio source using OpenAL Last change: remove underscores from variables

AccelerometerGraph Demonstrates how to use the UIAccelerometer class and filter its results. Last change: Improve the accessibility of AccelerometerGraph through use of the iPhone Accessibility API.

iPhoneMultichannelMixerTest Demonstrates how to build an Audio Unit Graph using the Multichannel Mixer and Remote I/O units. Last change: Editorial

AQOfflineRenderTest Demonstrates using Audio Queue offline render functionality using the AudioQueueOfflineRender API. Last change: Editorial

aurioTouch iPhone example to monitor audio input and play it out (duplex audio I/O) Last change: Fix DC offset bug

SpeakHere Demonstrates iPhone recording and playback using the Audio Toolbox framework. Last change: Add support for pausing playback when headphones are removed

Trailers This Dashcode Project contains a Trailer web app, built using bidings, data sources, and more. Last change: Extracted the ReadMe out of the .dcproj bundle Default project to open on the Desktop template rather than the iPhone one

GLES2Sample This sample demonstrates how to create an OpenGL ES 1.1 and 2.0 compatible project. Last change: New document.

AdvancedTableViewCells AdvancedTableViewCells shows several methods for displaying complex content in UITableViewCells. Last change: New document.

Reachability Shows how to monitor network state and host reachability. Last change: Simplified interface code, rewrote Reachability object to easily support monitoring multiple hosts, added code to track whether a connection will be required, and made sample fully asynchronous.

Formulaic Demonstrates how to use the iPhone Accessibility API to make an iPhone application accessible. Last change: First public version of a WWDC sample project.

avTouch avTouch is a sample project for playing an audio file using the AVFoundation framework Last change: Update Base SDK to 2.2.1

TopSongs Demonstrates importing data from an RSS feed into a Core Data store. Last change: Expanded ReadMe and added localization for SongsViewController.

TaggedLocations This sample illustrates how to manipulate attributes and relationships in an iPhone application. Last change: Added identifier to table view cell in EditableTableViewCell.xib.

GLImageProcessing Demonstrates how to implement simple image processing filters using OpenGL ES1.1. Last change: New document.

Teslameter This application implements a Teslameter, a magnetic field detector. Last change: Cleaned up for post-WWDC publication.

iPhoneCoreDataRecipes Shows how you can use view controllers, table views, and Core Data in an iPhone application. Last change: Added UIGraphicsEndImageContext and textFieldShouldReturn: method to RecipeDetailViewController.m. Added viewDidUnload methods to several view controllers. Cleaned up error-handling code. Added a xib file for TemperatureCell.

CopyPasteTile Demonstrates how to implement copy, cut, and paste in your application. Last change: New document.

TableViewSuite Shows how to use UITableView through a progression of increasingly advanced applications. Last change: Corrected a memory leak in the displayMethod in CustomTableViewCellAppDelegate.m.

MoveMe Illustrates simple drawing, touch handling, and animation using UIKit and Core Animation. Last change: Corrected a memory leak where a CGPath was not released.

Locations Complete implementation of the Locations project from the Your First iPhone Application With Core Data tutorial. Last change: Added 'nonatomic' to property declarations for Event.

CoreDataBooks Illustrates use of Core Data in an iPhone application. Last change: Fixed a memory leak in EditingViewController.m.

XMLPerformance Performance and parsing XML, focusing on speed, memory footprint, and user experience. Last change: Fixed a memory leak in LibXMLParser implementation of the NSURLConnection delegate method -connectionDidFinishLoading:. Improved autorelease pool management in Cocoa parser.

GKTank Sample application demonstrating Peer-to-Peer Connectivity using GameKit framework. Last change: Minor edits.

WiTap The WiTap sample application demonstrates how to achieve network communication between applications. Last change: Fixed table selection and cell update bugs, and added support for handling stream errors.

ScrollViewSuite A series of examples that illustrate how to use UIScrollView. Last change: Updated artwork.

BonjourWeb Shows how to find network services that are advertised by Bonjour. Last change: Fixed bug updating cells when all services are removed during a resolve.

PhotoLocations Illustrates a Core Data application that uses more than one entity and transformable attributes. Last change: New document.

iPhoneUnitTests Illustrates the use of unit tests on an iPhone application project. Last change: New document.

MailComposer Demonstrates how to target older OS versions while building with newly released APIs. Last change: New document.

DateCell Demonstrates formatted display of date objects in UITableViewCells and use of UIDatePicker to edit those values. Last change: New document.

BatteryStatus Demonstrates the use of the battery status properties and notifications provided via the iPhone OS SDK. Last change: New document.

ViewTransitions Demonstrates how to perform transitions between two views using built-in Core Animation transitions. Last change: Eliminated the TransitionView class. The code for creating and adding the transition is now in -performTransition in the ViewTransitionsAppDelegate.

GenericKeychain An example on how to properly use the Keychain Services API for iPhone OS. Last change: Added support for sharing keychain items between apps. Adopted iPhone OS 3.0 API for UITableView and UITableViewCell.

AppPrefs Demonstrates how to display your app's preferences or settings in the "Settings" system application. Last change: More use of nibs, upgraded for 3.0 SDK due to deprecated APIs, Settings.bundle no longer builds as a separate Xcode target.

Touches Demonstrates how to handle multiple touches. Last change: Now uses nibs for view creation. Status bar is now displayed on launch with the intended style.

HeaderFooter Demonstrates how to implement and customize UITableView's header and footer views. Last change: Upgraded for 3.0 SDK due to deprecated APIs.

DrillDownSave Demonstrates how to restore the user's current location in a drill-down list style user interface and restore that location when the app is relaunched. Last change: Upgraded for 3.0 SDK due to deprecated APIs.

SeismicXML Demonstrates how to use NSXMLParser to parse XML documents. Last change: Switched NSXMLParser to use initWithData: instead of initWithContentsOfURL: and implemented asynchronous NSURLConnection for download to give better control of network error handling. Consolidated parsing into app delegate for better handling of parse error callbacks and to avoid the design pattern of using the app delegate as a singleton for data access. Switched from custom UITableViewCell subclass to managing the layout with view tags to meet documented best practices. Modified Earthquake class to model numeric and date properties as numbers and dates instead of strings and merged string parsing code into the XML parsing code. Added use of the lat/lon data for opening Maps link.

CryptoExercise Highlights the Cryptographic APIs found in the Security framework and CommonCrypto for the iPhone OS SDK Last change: Adopted iPhone OS 3.0 UITableView and UITableViewCell APIs. Added check for availability of WiFi network. Made minor bug fix in hash computation.

TouchCells Demonstrates how to implement trackable-settable UIControls embedded in a UITableView. Last change: Adopted iPhone OS 3.0 UITableView and UITableViewCell APIs.

TableSearch Demonstrates how to search contents of a UITableView using UISearchBar and UISearchDisplayController. Last change: Updated UISearchBar and UISearchDisplayController as nib objects.

MoviePlayer Demonstrates how to use the Media Player framework to play a movie full-screen. Last change: Added support for receiving streaming audio and video over HTTP.

SimpleDrillDown Illustrates a simple drill-down application using a UITableView. Last change: Upgraded for 3.0 SDK due to deprecated APIs.

NavBar Demonstrates how to use UINavigationController and UIViewController classes as building blocks to your application's user interface. Last change: Upgraded for 3.0 SDK due to deprecated APIs.

International Mountains This sample demonstrates ways to incorporate and manage localized data in an iPhone application. Last change: New document.

AlternateViews Demonstrates how to implement alternate or distinguishing view controllers for each particular device orientation. Last change: New document.

Accessory Demonstrates how to implement a custom accessory view for your UITableView in the form of a checkmark button. Last change: Upgraded for 3.0 SDK due to deprecated APIs.

TransWeb Demonstrates how to implement UIWebView with a transparent background. Last change: New document.

PVRTextureLoader This application illustrates how to load PVR texture files and then display them using OpenGL. Last change: Fixed a bug in the Encode Images script.

Metronome Simulates the operation of a simple mechanical metronome. Last change: Added invocation of prepareToPlay for the AVAudioPlayer instances.

SimpleUndo Illustrates how to use undo on iPhone. Last change: New document.

URLCache Demonstrates how to download a resource, store it in the data directory, and use the local copy. Last change: New document.

Scrolling Demonstrates how to implement two different style UIScrollViews: single image, and multiple images. Last change: New document.

SysSound Demonstrates how to play short sounds and invoke vibration. Last change: New document.

HeadsUpUI Demonstrates how to implement a headsUp or HUD-like user interface over the app's primary view controller. Last change: New document.

WhichWayIsUp Tracks the orientation of the device. Last change: First public release.

HelloWorld Demonstrates how to edit text with a keyboard and how to display the text in a label. Last change: First public release.

LaunchMe Demonstrates how to register and service incoming requests of a new URL type. Last change: First public release.

BubbleLevel Simulates the operation of a simple, physical bubble level. Last change: First public release.