Domo Arigato Mr. Roboto
Sean Sullivan
June 17, 2009

Wednesday June 17
3:50 PM - Morrison
Domo Arigato Mr. Roboto
Thursday June 18
11:20 AM - Hawthorne
Android Location Services

Android is a software stack for mobile devices
that includes an operating system, middleware
and key applications
source: Google

source: NY Times, May 27 2009

August 2005
Google acquires Android
November 2007
Open Handset Alliance announcement
Android SDK available

September 2008
HTC and T-Mobile announce G1
October 2008
Android 1.0
Android Market goes live
G1 available in retail stores in USA
Android open source project

February 2009
Android 1.1
HTC and Vodafone announce HTC Magic
April 2009
Android 1.5
HTC Magic available in Spain

June 2009
Acer joins Open Handset Alliance
Huawei announces U8230

Huawei U8230
source: http://www.huawei.com/news/view.do?id=10855&cid=42

Android applications
• multiple applications, running simultaneously
• user may switch between running applications
• background services
• copy and paste

Third party applications
lifeaware.net Maverick Android Locale

Distributing Android apps
• Android Market
• self-publish on your own web site
• use a 3rd party application store

Android Market

Android Market
• US$25 registration fee for developers
• developer receives 70% of each sale
• remaining amount goes to carriers
• Google does not take a percentage
• http://www.android.com/market/

Self-publishing
• upload application to your own web server
http://icecondor.com/download/icecondor-v20090201.apk
• use correct MIME type
application/vnd.android.package-archive

System Architecture

Open source project
• http://source.android.com
• Apache 2.0 and GPL v2
• Git repository

Android applications
• are written in the Java language
• run on the Dalvik virtual machine
• Android != J2ME

Dalvik VM
• not a Java VM
• design constraints: slow CPU, little RAM
• will run on OS without swap space
• http://sites.google.com/site/io/dalvik-vm-internals

Application API’s
java.util.*
java.io.*
Java
java.lang.*
etc
android.widget.*
UI android.view.*
android.graphics.*
Telephony android.telephony.*
SMS android.telephony.gsm.SmsManager

Application API’s
Web android.webkit.WebView
Camera android.hardware.CameraDevice
Local database android.database.*
Maps com.google.android.maps.MapView
Location android.location.LocationManager
Multimedia android.media.MediaPlayer
HTTP org.apache.http.client.*

Getting started
http://developer.android.com

Development tools
• Java SDK
• Android SDK
• Eclipse
• Eclipse plugin

Android SDK
• Android emulator
• command line tools
• documentation
• example applications

Android emulator

Eclipse plugin
https://dl-ssl.google.com/android/eclipse/

Android applications
• application package file: myapp.apk
• an application is composed of one or more
activities

Activity
• an activity is usually a single screen in your
application
• however, activities can also be faceless
• one activity is designated as the entry point
for your application

android.app.Activity
import android.app.Activity;
public class MyActivity extends Activity
{
public void onCreate(Bundle savedValues)
{
super.onCreate(savedValues);
setContentView(R.layout.main);
}
}

Application
building blocks
• AndroidManifest.xml • Intents &
IntentReceivers
• Activities
• Services
• Views
• Notifications
• Layouts
• ContentProviders

UI development
• XML
• Java code

Android Views
a view is an object that knows how to draw
itself on the screen

ListView

DatePicker

MapView

Additional topics
• Threading • Android IDL (AIDL)
• Security model • Data synchronization
• Internationalization • WiFi API
• Power management • Bluetooth API

What’s next for Android?
• more phones
• text to speech API
• “Donut”

Questions?

Thank you

Android resources
• http://developer.android.com
• http://android-developers.blogspot.com
• http://code.google.com/p/apps-for-android/
• http://sites.google.com/site/io/
• http://www.openhandsetalliance.com
• http://source.android.com