Android 的浮动按钮

Android activity美轮美奂的切换效果，令你的ui与众不同(Android activity beautiful transition effects, and make your ui distinctive)

tcp/udp测试工具，IP地址端口号可设置, android版本的tcp/udp数据测试工具，采用线程方法读取。

Android 编程之数据库 SQLlite学习例子(an example for the learning of Android database)

应用背景本源码编写Android的app，主要是蓝牙低功耗的扫描，连接，数据传输已经控制三基色led关键技术蓝牙低功耗的实现原理，代码写的很清晰，具有吸引的三基色实现原理，代码写的通俗易懂的优点

资源描述package com.capitalbio.bluetoothlibs; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import java.util.Set; import java.util.Stack; import java.util.TreeSet; import java.util.UUID; import android.annotation.SuppressLint; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.os.Handler; import android.text.TextUtils; import android.util.Log; public class BluetoothService { private String TAG = "BluetoothService"; private UUID mUUID = UUID .fromString("00001101-0000-1000-8000-00805F9B34FB"); // .fromString("00001000-000

模仿ireader实现书架的功能，同时可以对书籍进行管理，进行删除，导入，查看信息，重命名等。同时阅读的时候可以翻页，修改字体大小等。

【核心代码】package com.gson;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.util.Date;import java.util.Properties;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletInputStream;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.log4j.Logger;import com.gson.bean.Articles;import com.gson.bean.InMessage;import com.gson.bean.OutMessage;import com.gson.bean.TextOutMessage;import com.gson.inf.MessageProcessingHandler;import com.gson.util.Tools;import com.gson.util.XStreamFactory;import com.thoughtworks.xstream.XStream;/** * 请求拦截 * * @author GodSon * */public class WeChatFilter implements Filter { private final Logger logger = Logger.getLogger(WeChatFilter.class); private String _token; private String conf = "classPath:wechat.properties"; private String defaultHandler = "com.gson.inf.DefaultMessageProcessingHandlerImpl"; private Properties p; @Override public void destroy() { logger.info("WeChatFilter已经销毁"); } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) res; Boolean isGet = request.getMethod().equals("GET"); String path = request.getServletPath(); String pathInfo = path.substring(path.lastIndexOf("/")); if (pathInfo == null) { response.getWriter().write("error"); } else { _token = pathInfo.substring(1); if (isGet) { doGet(request, response); } else { doPost(request, response); } } } private void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException { response.setCharacterEncoding("UTF-8"); response.setContentType("text/xml"); OutMessage oms = new OutMessage(); ServletInputStream in = request.getInputStream(); // 转换微信post过来的xml内容 XStream xs = XStreamFactory.init(false); xs.alias("xml", InMessage.class); String xmlMsg = Tools.inputStream2String(in); logger.debug("输入消息:[" xmlMsg "]"); InMessage msg = (InMessage) xs.fromXML(xmlMsg); // 获取自定消息处理器，如果自定义处理器则使用默认处理器。 String handler = p.getProperty("MessageProcessingHandlerImpl"); if (handler == null) handler = defaultHandler; try { // 加载处理器 Class clazz = Class.forName(handler); MessageProcessingHandler processingHandler = (MessageProcessingHandler) clazz.newInstance(); // 取得消息类型 String type = msg.getMsgType(); Method mt = clazz.getMethod(type "TypeMsg", InMessage.class); oms = (OutMessage) mt.invoke(processingHandler, msg); if (oms == null) { oms = new TextOutMessage(); ((TextOutMessage) oms).setContent("系统错误!"); } setMsgInfo(oms,msg); } catch (Exception e) { logger.error(e); oms = new TextOutMessage(); ((TextOutMessage) oms).setContent("系统错误!"); try { setMsgInfo(oms,msg); } catch (Exception e1) { logger.error(e); } } // 把发送发送对象转换为xml输出 xs = XStreamFactory.init(true); xs.alias("xml", oms.getClass()); xs.alias("item", Articles.class); String xml = xs.toXML(oms); logger.debug("输出消息:[" xml "]"); response.getWriter().write(xml); } private void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { String signature = request.getParameter("signature");// 微信加密签名 String timestamp = request.getParameter("timestamp");// 时间戳 String nonce = request.getParameter("nonce");// 随机数 String echostr = request.getParameter("echostr");// // 验证 if (Tools.checkSignature(_token, signature, timestamp, nonce)) { response.getWriter().write(echostr); } } private void setMsgInfo(OutMessage oms,InMessage msg) throws Exception { // 设置发送信息 Class outMsg = oms.getClass().getSuperclass(); Field CreateTime = outMsg.getDeclaredField("CreateTime"); Field ToUserName = outMsg.getDeclaredField("ToUserName"); Field FromUserName = outMsg.getDeclaredField("FromUserName"); ToUserName.setAccessible(true); CreateTime.setAccessible(true); FromUserName.setAccessible(true); CreateTime.set(oms, new Date().getTime()); ToUserName.set(oms, msg.getFromUserName()); FromUserName.set(oms, msg.getToUserName()); } /** * 启动的时候加载wechat.properties配置 可以在过滤器配置wechat.properties路径 */ @Override public void init(FilterConfig config) throws ServletException { String cf = config.getInitParameter("conf"); if (cf != null) { conf = cf; } String classPath = this.getClass().getResource("/").getPath().replaceAll("%20", " "); conf = conf.replace("classPath:", classPath); p = new Properties(); File pfile = new File(conf); if (pfile.exists()) { try { p.load(new FileInputStream(pfile)); } catch (FileNotFoundException e) { logger.error("未找到wechat.properties", e); } catch (IOException e) { logger.error("wechat.properties读取异常", e); } } logger.info("WeChatFilter已经启动！"); }}

这是我们用的一段用来开机启动程序的代码,在街机中如果用android系统比较常用

android ExpandableTextView 例子源码下载

这是一个简单的android程序，应用thread阻塞和inent实现简单的信息交换，适合初学者使用(This is a simple android, application thread blocking and inent simple exchange of information for beginners)