AndroidStaggeredGrid、瀑布流

Android Lazy LIST sAMPLE cODE

android 语音压缩用到的很平常，本案例是把语音压缩成amr格式 压缩完成后 语音是可以直接在android系统上播放的 案例简单实用 

在Android平台上使用opencv实现的人脸检测(The Android platform using face detection opencv realized)

android 头像相册拍照上传，选取剪裁,android 头像相册拍照上传，选取剪裁，android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁android 头像相册拍照上传，选取剪裁

应用背景Lorem存有 ；仅仅是印刷排版业虚拟文本。Lorem存有一直是行业的标准虚拟文本自从16世纪，当一个未知的打印机把厨房型和炒它做字体样本。它不仅存活了五个世纪，而且还跨越了电子排版，基本上保持不变。这是流行在上世纪60年代随着拉突激光印字传输系统含Lorem存有通道释放，以及最近的桌面出版软件Aldus PageMaker包括Lorem存有版本。关键技术SED UT perspiciatis OMNIS ISTE Natus误差在坐voluptatem accusantium doloremque laudantium，totam REM aperiam平等，事实不云乎：AB伊洛inventore veritatis等准architecto beatae简历原则必须explicabo。尼莫”ipsam voluptatem quia Voluptas坐aspernatur AUT odit AUT福杰特，SED全能consequuntur麦尼多洛雷斯EOS魁属voluptatem Sequi nesciunt。neque波罗quisquam EST，魁dolorem ipsum quia悲哀坐特，consectetur，adipisci维利特，SED全能非numquam eius莫迪时代incidunt UT”等，quaerat voluptatem麦克纳姆痛苦。UT ENIM广告极小veniam，QUIS妙方exercitationem ullam体癣suscipit laboriosam，NiSi UT液体前EA的商品consequatur？在3 reprehenderit魁考德维尔QUIS EA voluptate维利特ESSE”无molestiae consequatur，VEL Illum魁dolorem EUM fugiat Voluptas pariatur现状不？

可以实现四个小游戏，有拼图，有画图板，有归宿地查询，有一个擦图片的功能。是课程设计的时候，老师教的，可以导入android adt里面，参考。

可拖动排序的ListView，源码定制性很强，很容易基于现有代码上进行重构和修改，提供了多种拖动时的变换效果，是学习自定义控件的一个非常好的源码

这是一款Android的音乐播放器源码，加入了很多特效，比如列表的动画，摇动的动画等等

【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！"); }}

android studio平台开发，内容详细，可以加强对自己的Service、Activity、Broadcast、Intent等组件的学习。同时还可以练习自定义控件的学习。