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Andriod Overview (UNC)
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Andriod Overview (UNC)



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  • 1. Android Google
  • 2. Android An Open Handset Alliance Project
      • Write apps to run on mobile phones
      • Will be released as open source
      • Can download the SDK today!
  • 3. Android Features
      • Application Framework
      • Dalvik virtual machine
      • Integrated (webkit) browser
      • 2D and 3D graphics APIs with HW
      • SQLite
      • Video and audio codecs
      • Bluetooth, EDGE, 3G, and WiFi
      • Camera, GPS, compass, and accelerometer
  • 4. Android Architecture
  • 5. Challenges
      • CPU typically runs 500-600 Mhz
      • RAM available to an App may only be a few megabytes
      • Disk (flash) access is very slow
      • Lifecycle - apps must pause/quit often, and restore to give the illusion that they are always running
      • UI design
        • typical screen may be HVGA (320x480)
        • may be in portrait or landscape
        • very high DPI - small text may not be readable
        • touch resolution is very low (~25 pixel)
      • Network access may be slow and (very) intermittent
  • 6. Opportunities
      • 100s of millions of mobile phone users
      • Very high growth, esp. in Asia
      • "Wild wild west" of application development
        • think 1985 on the desktop (if you were born by then)
        • no dominant 3rd party developers.... yet
        • what will the killer app categories be?
        • what does it mean to have any app + the internet in your pocket?
      • You can develop for it today!
  • 7. Possibilities
    • Augmented Campus Reality
      • camera + maps + compass = heads up info
    • Games
      • multi-player (bluetooth, wifi, cell)
      • location-based (scavenger hunt)
    • Custom overlays for maps
      • weather, traffic, friends
    • Web scraping
      • news filters
      • sport scores
      • dook news eliminators
    • Distributed computing?
      • 10,000 phones all donating their idle time
      • tiny terminal (phone) + fast cpu/network (server)
    • Shared whiteboard
  • 8. Project Suggestions
      • Web Scrapers [movies, weather, sports, <topic> news]
        • Find multiple web sources
        • Scrape them for the relevant information
        • Present in a custom UI on the phone
      • Asynchronous games [chess, poker, risk]
        • Develop an API for all games to communicate through
          • Establish connections by phone number
          • Send and receive game data
          • Ability to reopen connections 
      • Planner/To-do list with location data
        • Decide route to next class, meeting, etc
        • Find a order/route for non time-critical tasks
        • Connect to campus directory to find teachers/classmates