iPhone SDK Technology Layers

supports - iPhone, iPad

• Core OS
  • LibSystem library - access to low level and system functions
    • threading (POSIX threads)
    • networking (BSD sockets)
    • file system access
    • standard I/O
    • Bonjour and DNS Services
    • Locale Information
    • memory Allocation
    • Math Computations
      
      
• Core Services
  • system services all iPhone applications use
  • frameworks and libraries:
    • core foundation framework - C based interfaces :
      • collection data types (arrays, sets)
      • application bundle support
      • date and teim management
      • raw data management
      • preferences management
      • URL & Stream services
      • Thread & Run-loop
      • Port & socket communication
    • CFNetwork framework - C based interfaces surrounding networking
      • BSD Sockets
      • FTP & HTTP(s) communication
      • Bonjour Network services
      • DNS Host resolution
      • Encrypted SSL or TLS
    • Security framework - built in security
      • Certificate & Key management
      • Generate pseudo-random numbers
      • Keychain
    • SQLite library - database support, including local database tables.
    • XML libraries - support for XML, opensource for parsing and translating XML to HTML
      • libxml2
      • libxslt
• Media
  • Graphics
• Quartz - library for 2D, vector graphics, images
• Core Animation - Objective C for animation, window transitionsand feedback
• OpenGL ES - mobile version for OpenGL - 3D graphics, gamming
• Aduio
  • Core Audio & Audio Toolbox framework- short sounds, vibration, play and capture audio
  • OpenAL - 3D spatial audio, used in gamming sometimes.
• Video
  • MediaPlayer framework - compression for video and audio, MPEG, etc.
    
    
• Cocoa Touch - primary event driven and interface (GUI), access built in camera, etc.
  • UIKit framework - GUI and events
• Application integraton - use other applications via system message (i.e. call phone, open safari, drop a pin in maps app, display youtube or create a mail, or your own other applications
• Graphics and windows
  • Views = a few is the layout.
  • View have controls.
• Event- handling
  • MULTI TOUCH EVENTS model : instead of mouse and keyboard use one or more fingers and tracking (location and direction of movement) to manipulate. Recognize gestures and give responses.....Zoom in response = pinch gester. Scroll = flick gesture