Android is an open-source, Linux-based operating system designed for mobile devices. It was developed by Android Inc., which was acquired by Google in 2005. The Android platform uses Java for application development and includes components like activities, services, broadcast receivers and content providers. Activities have a lifecycle that developers must understand. While Android offers opportunities for app development, challenges include software and device fragmentation and security issues. Key references for Android development include the Android developer website and Wikipedia.

1. Android
App
Development
By-Gautam kumar
(Netaji subhash engineering college)

2. Introduction to Android
• Android is a Linux-based operating system designed primarily
for touch screen mobile devices such as smart phones and tablet
computers
• Android Inc. was founded in Palo Alto, California in October 2003
by Andy Rubin, Rich Miner, Nick Sears, and Chris White
• In July 2005, Google acquired Android Inc. for at least $50 million
• Open software platform for mobile development
• Fast application development in java

3. Why Android?

4. Android Market

5. Android Platform Architecture

12. How Android Apps are Built and Run

13. Application building blocks
• Activity
• Service
• Broadcast Receivers
• Content Providers

14. Life cycle of an
Activity

15. Challenges for developers
• Software fragmentation
• Mobile device fragmentation
• Security problem

16. References
• https://developer.android.com
• https://en.wikipedia.org/
• https://www.tutorialspoint.com/android/