Download android - Cloud 479

Mobile Application
Development
with ANDROID
Umang Patel(6537)
LDCE
Agenda
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Intro to Android platform
Platform architecture
Android 1.5 Platform Highlights
Development tools
Resources
Introduction to Android
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Open software platform for mobile development
A complete stack – OS, Middleware, Applications
An Open Handset Alliance (OHA) project
Powered by Linux operating system
Fast application development in Java
Open source under the Apache 2 license
Applications
• Built in and user apps
• Can replace built in apps
Application Framework
• API interface
• Activity manager - manages application life cycle.
• View System - to build an application, including lists,
grids, text boxes, buttons
• Resource Manager
• Notification Manager
• Content Provider
Libraries
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C/C++ libraries
Surface manager – Handling UI Windows
2D and 3D graphics
Media Framework
SQLite
LibWebCore
Android Runtime
• Dalvik VM
– Dex files
– Compact and efficient than class files
– Limited memory and battery power
• Core Libraries
– Java 5 Std edition
– Collections, I/O etc…
Linux Kernel
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Device drivers
Memory management
Process management
Networking
Android 1.5 Platform
Highlights
• User Interface Refinements
• Performance Improvements
• New Features
User Interface Refinements
• UI polish for:
– Contacts, Call log, and Favorites
– Browser
– Calendar
– Email
– Camera & Gallery
– Application management
Performance Improvements
• Faster Camera start-up and image capture
• Much faster acquisition of GPS location (powered by
SUPL AGPS)
• Smoother page scrolling in Browser
• Speedier GMail conversation list scrolling
New Features
• Home screen
– Widgets
• Bundled home screen widgets include: analog clock,
calendar, music player, picture frame, and search
– Live folders
• Camera & Gallery
– Improved handsfree experience
– Stereo Bluetooth support
• Contacts
– Specific date/time stamp for events in call log
– One-touch access to a contact card from call log event
New Features
• Browser
– Updated with latest Webkit browser & Squirrelfish
Javascript engines
– Copy 'n paste in browser
– Search within a page
– User-selectable text-encoding
• System
– New Linux kernel (version 2.6.27)
– SD card filesystem auto-checking and repair
• Google applications
– Google Talk
– Upload videos to Youtube
– Upload photos on Picasa
Development Tools
• Eclipse
• Android SDK
developer.android.com
The Emulator
• QEMU-based ARM emulator
• Runs the same image as the device
• Limitations:
– No Camera support
– USB connections
– placing or receiving actual phone
calls
Devices
Interesting things to do
• Android is open source
• Opportunities for researchers
• Get the source, compile and update the
device image
References
• http://developer.android.com
• http://sites.google.com/site/io