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Android Application Development

This document serves as a guide for intermediate Android developers, covering the Android framework, development tools, and best practices. Key components include details on the Android SDK, creating the first app with basic functionalities, and connecting to networks like Facebook. The guide emphasizes the importance of targeting specific Android versions and developing user-friendly applications.

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Android Application Development ____________________________ - A guide for the Intermediate Developer
What is Android?
Versions of Android
Android Market April 12
Android Market June 1
Android Market in 7 weeks >>>
Developer? • Keep Track of the Android Market Downloads! • Target lowest version - 1.5 today • Target important versions (1.5, 1.6 & 2.1)
Who owns Android? http://www.openhandsetalliance.com/
Who is OHA? Mobile Operators
Who is OHA? Mobile Semiconductor Operators Companies
Who is OHA? Mobile Semiconductor Handset Operators Companies Manufacturers
Who is OHA? Mobile Semiconductor Handset Software Operators Companies Manufacturers Companies
Who is OHA? Mobile Semiconductor Handset Software Commercialization Operators Companies Manufacturers Companies Companies
Not just...
Android SDK +
Android SDK + • Java Android Library (~Java SE)
Android SDK + • Java Android Library (~Java SE) • Java version 1.5 (1.6)
Android SDK + • Java Android Library (~Java SE) • Java version 1.5 (1.6) • Eclipse IDE + Android Development Tool
Android SDK + • Java Android Library (~Java SE) • Java version 1.5 (1.6) • Eclipse IDE + Android Development Tool • Android Virtual Device
Android SDK + • Java Android Library (~Java SE) • Java version 1.5 (1.6) • Eclipse IDE + Android Development Tool • Android Virtual Device • SD-Card Size > 8 MiB (16 MiB)
Android Virtual Device
How Android Works
Your first Android App ?
Your first Android App ? “Hello World!”
AndroidManifest.xml
AndroidManifest.xml android:label=“@string/app_name”
main.xml
main.xml android:text=“@string/hello”
strings.xml
strings.xml android:text=“@string/hello” <string name=“hello”>Hello World!</string>
strings.xml android:label=“@string/app_name” android:text=“@string/hello” <string name=“hello”>Hello World!</string> <string name=“app_name”>First App</string>
FirstApp.java
FirstApp.java setContentView(R.layout.main); = res/layout/main.xml
Hello World!
Hello World! <string name=“app_name”>First App</string> <string name=“hello”>Hello World!</string>
Multitasking
Multitasking public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ... }
Dalvik Virtual Machine
Dalvik Virtual Machine Instance InstanceInstance Instance Instance Instance Instance Instance Instance Instance Instance
OS Terminator Instance InstanceInstance Instance Instance Instance Instance Instance Instance Instance Instance Memory
OS Terminator InstanceInstance Instance Instance Instance Instance Instance Instance Instance Instance Instance Memory
OS Terminator InstanceInstance Instance Instance Instance Instance Instance Instance Instance Instance savedInstanceState Memory
OS Terminator InstanceInstance Instance Instance Instance Instance Instance Instance Instance savedInstanceState Instance Memory
OS Terminator InstanceInstance Instance Instance Instance Instance Instance Instance Instance savedInstanceState savedInstanceState Memory
User Re-activate App InstanceInstance Instance Instance Instance Instance Instance Instance Instance savedInstanceState savedInstanceState Memory
User Re-activate App Instance Instance Instance savedInstanceState savedInstanceState Memory
User Re-activate App Instance Instance Instance Instance savedInstanceState Memory
User Re-activate App Instance Instance Instance savedInstanceState Instance Instance Memory
Test Application 1. Connect to Network server Quick 2. Login with Facebook connect Value Win 3. Login with user/password 2. 1. 3. Easy
Test Application 1. Connect to Network server Quick 2. Login with Facebook connect Value Win 3. Login with user/password 2. 1. 3. High Value & Easy Difficult
Connect Android phone Network server
Connect Android phone Network server
Facebook Connect http://apps.facebook.com/myfbdevapp/ Facebook Developer Your server
Your Server... Google Analytics!
Android FB Connect • FBRocket • iPhone clone http://wiki.developers.facebook.com/index.php/User:Android
Networking • HTTP + SSL = HTTPS • Use threads to increase User Experience
Reference
Reference
Now what? This summer: Develop mobile app for...
Now what? This summer: Develop mobile app for...
Opposition