Android And Web Services

Leong Hean Hong hong@codeandroid.my

PHP User Group Meetup 3rd November 2009

(CC) BY

Overview

● What is Android?● Devices● Marketplaces● Communities ● Development Environment● Android and iPhone Differences● Accessing Web Services

What Is Android?

● “Android™ delivers a complete set of software for mobile devices: an operating system, middleware and key mobile applications.”

● Part of Open Handset Alliance● Apache License v2● Built on Linux kernel● Eclair SDK 2.0 released on 27th Oct 209

Devices

● HTC○ Dream (G1, Android Dev Phone 1), Magic (Ion), Hero,

Tattoo● Motorola

○ CLIQ, DROID● Samsung

○ I7500 ● LG

○ GM620

Marketplaces

● Distribution of apps is not limited to a single channel● Can be as simple as emailing the package to your friend● Some marketplaces:

○ Google Android Market○ SlideME○ Motorola

Communities

● CodeAndroid○ Monthly meetups○ Regional (Malaysia, Thailand)

● Anddev.org (active, friendly)● Google groups (http://developer.android.

com/community/index.html)

Development Environment

● Sun JDK● Eclipse (MOTODEV Studio) ● SDK

○ Java - SDK 2.0○ C/C++ - NDK 1.6

Android and iPhone Differences

● Licensing ● Distribution channels● Device diversity● Process and thread● Application(GUI, non-GUI, background services)

Accessing Web Services

● Platform neutral web standards: HTTP, XML, JSON● HTTP

○ java.net.HttpURLConnection○ org.apache.http.client.*

● XML○ org.w3c.dom○ org.xml.sax○ org.xmlpull.* (performance in constrained environment,

incremental parsing)● JSON

○ org.json○ json-lib ("for transforming beans, maps, collections, java

arrays and XML to JSON and back again to beans and DynaBeans")

References

● Connecting to Web Services on Android● Android Snippet● Hello World● Sample code for HTTP POST and GET● API References

Question?http://bit.ly/android_php