Android development requires Java, Eclipse IDE with the Android Development Tools (ADT) plugin installed, and the Android SDK. The SDK includes the Android platform and system images for emulators. Developers create Android projects in Eclipse containing activities, services, receivers and content providers. The default "Hello World" project contains sample code and XML layout files to display a simple greeting on launch.

1. Android

2. What u need
• Java
• Eclipse (http://www.eclipse.org/downloads/)
• Android SDK
(http://developer.android.com/sdk/index.html
)

3. Installing ADT plugin
• You need ADT plugin to develop in eclipse
• Click on add and use https://dl-
ssl.google.com/android/eclipse/ as the URL
and install the plugin

4. Android SDK
• Unzip the Android SDK and give the path to
folder in Windows->Preferences->Android-
>SDK Location
• Start Android SDK Manager

5. Install Android version u want
• Install the android version you need in
Android SDK manager.

6. Basic concepts
• Activity – Any UI in android is an activity
• Services – When you need a background job
and not an UI
• Receivers – gets notified when an event
occurs(eg: notify me when there is a SMS)
• Content Provider – when you need content
from device like contacts, media
• Intents – you specify what you want (more like
raising a event with details)

7. Hellow world
• Start new project File->New->Android Project.
• Give a name, choose on what version you
want your project to run.
• Application name – name u want
• Package – give something sensible
• Give a activity name and choose a min version
needed.

8. Whats created?
• U get a sample project by default..
• If everything was good, you can launch your
first app without any more steps..
• You may be asked to create a new virtual
device. From Windows-> AVD Manager
• Click Run an emulator would start in a few
mins

9. Understanding whats under the hood

10. xmls
• Open main.xml and start modifying…Add your
own UI
• Open AndroidManifest.xml and see whats ur
application meta data looks like..

11. Simple eclipse short cuts you may
need
• Ctrl+1 – show suggestions..
• Ctrl+3 – show master control.. Type in what
you want
• Ctrl+Alt+ up/down – duplicate line up/down
• Ctrl+o – functions in given java file..
• Ctrl+Shift+R – type the name of resource you
need (eg:main.xml)
• Ctrl+f11 – Run the program..