ANDROID FRAMEWORK

Henry AddoTwitter: http://twitter.com/eyedol

WHAT WE ARE GOING TO LOOK AT

* What Is Android?* Architecture Overview.* Android Software Development.* Developer Tool Kits.* Getting started.* Sample Apps.* References.

WHAT IS ANDROID* An open platform for mobile computing.

* Its linux based.

* But development is in java.

ARCHITECTURE OVERVIEW

* Power Management* Security * Drivers* Processes Management

ARCHITECTURE OVERVIEW

The libraries provide functionalities.

ARCHITECTURE OVERVIEW

ANDROID SOFTWARE DEVELOPMENT

* Application building blocks

* Application Model

* UI Components

APPLICATION BUILDING BLOCKS

* Activities and Intents* Broadcast Receivers * Services* Content Providers

ACTIVITIESAn activity is a screen in your application.

ACTIVITY LIFE CYCLE

INTENTS* An activity communicate with each other using Intents.

* The Intent is resolved to another Activity, by matching it against an Intent Filter.

* Intent conveys Data and Actions.

BROADCAST RECEIVERS* Listens for Intents * Incoming calls * Incoming SMS * Alarms * Network availability changes

* Does not display UI * Uses notifications

SERVICES* Services perform long running activities.

* Services can be manual or automatic.

* Can run in process or in another process altogether.

APPLICATION MODEL

* Android Package( .apk ) * Compiled code & resources * Must be signed just like jar.

* Task * May span activities across several packages and processes.

UI COMPONENTS* Views * Simple * Edit, Button, Checkbox,Radio * Specialized * DatePicker, AutoComplete

* ViewGroups * Relative, Table, Linear * Web, Video, Map, Gallery

DEVELOPER TOOLKITS

Emulator* An emulator that runs same system image as a device* You could also use the developer device.

DEVELOPER TOOLKITSEclipse Plugin - ADT

DEVELOPER TOOLKITSDebugger

GETTING STARTED

* The famous “Hello World” Program provided by the SDK: *Android Manifest * Layout file * Activity source file

GETTING STARTED* Android Manifest file

GETTING STARTED* Layout file

GETTING STARTED* Activity Source file

GETTING STARTED* Built and Running on the Emulator

GETTING STARTED

Accelerator TitaniumYou don’t need java to write android apps.

http://www.appcelerator.com/

RESOURCES* Android SDK:http://developer.android.com/sdk/index.html

* GUI Designer: http://www.droiddraw.org/

* API Documentation:http://developer.android.com/reference/android/package-summary.html * Developers Mailing List:http://groups.google.com/group/android-developers

REFERENCES* Android homepage:http://www.android.com/

* Open Handset Alliance:http://www.openhandsetalliance.com

* Android Developers Page:http://developers.android.com/

* Android Open Source:http://source.android.com/

THANK YOU FOR COMING