Socket
Android开发socket通信——手机做server端C/S架构实现
Android利用LocalSocket实现Java端进程与C端进程之间的IPC
android socket通信（上）
android socket通信（下）
android socket通信实例程序
android socket通信实例程序（下）
linux与windows之间的socket编程
Service
Android开发学习笔记：Service的简介和启动方式
How to start Service on click of Widget Button?
二维码生成
Android SDK: Create a Barcode Reader
二维码读取
How to read barcodes with the camera on Android?
RatingBar
How can I decrease the size of Ratingbar?
Code example for RatingBar
how to change the color RatingBar depending on the number of stars?
获得本机的IP
get Local Ip Address : IP « Network « Android
Get IP Address of connected Wi fi in Android application
Going from 127.0.0.1 to 2130706433, and back again
Java Code Examples: java.net.InetAddress
program closed unexpected when i try getConnectionInfo
背景设置
android在学习——Menu背景图片，背景色的设置
How to change the background color of Action Bar’s Option Menu in Android 4.2
退出程序
Android中的“再按一次返回键退出程序”实现