iPhone Programming
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1. The document discusses programming for the iPhone, including the tools and frameworks needed like Xcode, Objective-C, and the iPhone SDK. 2. It describes different styles of iPhone applications like productivity, utility, and immersive styles. Productivity apps focus on organization of information using system views, utility apps perform simple tasks, and immersive apps offer rich visual experiences. 3. Hardware and software features that can be incorporated into apps are discussed, including the accelerometer, location services, contacts, camera, and photo library.
iPhone Programming
- 1. iPhone Programming Speaker Shashank Garg
- 2. What is iPhone Smart Phone by Apple. Why is iPhone an iPhone, not just Phone ?????? Built in Accelerometer GPS or Position Triangulation Multi Touch Interface Keyboard Safari Mail Calendar Wide Screen Display I think biggest in the market
- 3. What do u need to Program for iPhone Intel-based Macintosh running Leopard(OS X 10.5.3 or later).
- 4. iPhone Development Development done with the help of iPhone SDK Uses Objective-C IDE XCODE Only push your application through App Store 99 $ membership Review of your application Code also 70 % and 30 % share.
- 5. iPhone SDK iPhone Sdk have five powerful tools to do iPhone programming. XCODE Professional text editor Debugger GCC compiler Interface Builder For creating user interface Instruments For optimizing application Dash Code For creating web applications for Safari iPhone Simulator
- 6. Things to consider before programming Low resources 128 mb Ram Limited Battery life Application should take less execution time. Single Window Multi Touch Events
- 7. iPhone OS overview and Technologies iPhone Os can be viewed as set of layers
- 8. Cocoa Touch Layer The Cocoa Touch layer comprises UIKit.framework and Foundation.framework iPhone OS uses this layer to implement features: Application management Event-handling support User interface management Support for text and web content Accelerometer data The built-in camera
- 9. Media Layer Graphics Technologies OpenGLES.framework (OpenGL), QuartzCore.framework (Core Animation) Core Audio CoreAudio.framework , AudioToolbox.framework, AudioUnit.framework (playback and recording, audio processing). Video Technologies iPhone OS provides support for full-screen video playback through the Media Player framework ( MediaPlayer.framework )
- 10. Core Services The Core Services layer provides the fundamental system services that all applications use Address Book AddressBook.framework : provides access to the contacts stored on a user’s device Core Location CoreLocation.framework : lets you determine the current latitude and longitude of a device CFNetwork CFNetwork.framework : Provides communication with FTP and HTTP servers SQLite The SQLite library lets you embed a lightweight SQL database into your application
- 11. Core OS The Core OS layer encompasses the kernel environment, drivers, and basic interfaces of the operating system iPhone OS provides a set of interfaces for accessing many low-level features of the operating system. Your application accesses these features through the LibSystem library. The interfaces are C-based and provide support for the following: Threading (POSIX threads) Networking (BSD sockets) File-system access Standard I/O Memory allocation
- 12. iPhone Hardware and Software features that can be incorporated in applications Accelerometer iPhone and iPod touch have 3 accelerometers to measure changes along each of the primary axes in three-dimensional space, which allows you to detect motion in any direction Applications that want to access the accelerometer data directly can also do so using UIKit
- 13. iPhone Hardware and Software features that can be incorporated in applications Core Location The Core Location framework monitors signals coming from cell phone towers and Wi-Fi hotspots and uses them to triangulate the user’s current position Use this framework judiciously to not drain the user’s battery
- 14. iPhone Hardware and Software features that can be incorporated in applications Contacts You can access the user’s contact information using the Address Book UI framework
- 15. iPhone Hardware and Software features that can be incorporated in applications The Camera and Photo Library iPhone has an inbuilt camera as well as a centralized photo library whereas iPod Touch doesn’t have a camera iPhone OS provides access to both of these features through classes in the UIKit framework
- 16. Styles of Programming for iPhone iPhone OS defines three basic styles for applications: Productivity style Utility style Immersive style
- 17. Productive Style Productivity Applications The focus is on the organization and manipulation of detailed information Typically rely on system views and controls (text fields, labels, and other data-oriented views) for their presentation and do little or no custom drawing Example: The Settings application
- 18. Utility Style Utility Applications Perform a targeted task that requires relatively little user input A quick summary of information or a simple task on a small number of objects Examples: Weather and Stocks applications
- 19. Immersive Application Immersive Applications Offer a full-screen, visually rich environment that’s focused on the content and the user’s experience with that content Commonly used for implementing games and multimedia-centric applications Example: Media Player application
- 20. Our Project GeoXray LocateMe Feature. Search POI’s around Current Location. Fetch Relevant News Articles
- 21. GeoXray Used UIWebkit to display map. Frameworks: UIKit Json CoreLocation MapKit Foundation
- 22. GeoXray On iPhone Side Connect iPhone to the Geosemble Server. Retrieve the Data in JSON format. Parse the data and populate the map view and the Table Views.
- 23. Challenges Objective C, if you are a pure Java programmer One time, only one application is executable. -State Saving(NSArchiver). Memory leaks - Use Application tool to Fix Memory Leaks. - Use instruments with the code running on the device to See how much memory is being used.
- 24. Questions?
- 25. Thanks Name: Shashank Garg Email : shashang@usc.edu