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Introduction — What is Android

Android is a mobile oper­at­ing sys­tem that is based on Linux. Ini­tially it was started by a start-up called android. Later on Google pur­chased it and took over its development.

Key points

  • Its free and open source.
  • It pro­vides the uni­fied approach to appli­ca­tion development.
  • Android is very attrac­tive so it many ven­dors are inter­ested in it.
  • Devel­op­ers need only develop for android and their appli­ca­tion will work on many dif­fer­ent devices.

Android Ver­sions

1.5 Cup­Cake
1.6 Donut
2.0/2.1 Eclair
2.2 Froyo
2.3 Gin­ger Bread
3.0/3.1/3.2 Hon­ey­Comb
4.0 Ice Cream Sandwich
4.1 Jelly Bean
4.4 Kit Kat
5.0 Lol­lipop (Not Confirmed)


Fea­tures of Android:

  • Stor­age — Uses SQLite, a light­weight rela­tional data­base, for data storage.
  • Con­nec­tiv­ity: Sup­ports GSM/EDGE, CDMA, IDEN, EV-DO, UMTS, Blue­tooth, Wi-fi, LTE, WiMAX.
  • Mes­sag­ing — Sup­ports both SMS and MMS.
  • Web Browser — web browser in android is based on the open source WebKit, along with Chrome’s V8 JavaScript.
  • Media Sup­port — Android sup­ports JPEG, BMP, GIF, WAC, MP3, MPEG-4, PNG and many more.
  • Hard­ware Sup­port: Accelerom­e­ter sen­sor, Cam­era, Prox­im­ity sen­sor, GPS and many more.
  • Multi-touch
  • Multi-tasking
  • Flash Sup­port
  • Teth­er­ing — shar­ing of inter­net con­nec­tion as wired/wireless hotspot.

We will look in Android Frame­work in next session

Happy Android­ing 🙂
Sumit Jain


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