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Foss con2011

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Transcript

  • 1. Introduction toAndroid Development
  • 2. Vanji! vanjikumaran@gmail.com
  • 3. Introduction to AndroidAfter this section you will... Identify unique features of android platform Compare android against other platforms Understand android building blocks
  • 4. WE’RE COVERINGTOOLS NEEDED (~5 MINS)ANDROID FRAMEWORK INTRO (~5-8 MINS)BUILDING A REAL APP (MAJORITY OF TIME) QUESTIONS FYI: THIS IS A LOT OF INFO! WE’RE GOING TO MOVE VERY FAST! 
  • 5. What is Android ?android is the first complete, open and free mobileplatformsoftware stack than includes •operating system •Middleware •key applications •rich set of APIs
  • 6. Is android linux ?android is based on a linux kernel but its not GNU/Linux
  • 7. so is android java ?● uses the java language● implements part of the Java5 SE specification● runs on a dalvik virtual machine instead ofJVM android is not an implementation of any of theJava variants
  • 8. Android linux kernelAndroid is based on a linux 2.6 kernel, providing •Security •Memory management •Process management •Network stack •Driver model •abstraction layer
  • 9. THE APP Emulator!
  • 10. What You’ll Need
  • 11. ARCHITECTURE
  • 12. APPLICATION BUILDING BLOCKS • UI Component Typically Activity Corresponding to one screen. • Responds to notifications or statusIntentReceiver changes. Can wake up your process. • Faceless task that runs in the Service background.ContentProvider • Enable applications to share data.
  • 13. APPLICATION REPLACING & REUSINGClient component makes a request System picks the best component Components can action. a specific be replaced at for for that action. any time.
  • 14. INTENTS: APPLICATION REPLACING & REUSING
  • 15. WRITING THE APP