Android101

ANDROID FRAMEWORK Henry Addo Twitter: 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

ACTIVITIES An 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 TOOLKITS Eclipse Plugin - ADT

DEVELOPER TOOLKITS Debugger

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 Titanium You 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

Android101

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