android 可自定义样式的dialog 实例源码

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android listview 下拉刷新 实例源码下载

主要功能有：七天天气折线图，城市列表，sharedpreference轻量级数据保存（按照个人需求，可以改成离线数据库），生活指数，语音播报，自动定位。。

android opencv 图像识别 源码下载

android调用 webservice的两种方法 示例源码下载

Rules::The AsyncTask instance must be created in UI thread. .execute must be invoked on the UI thread.Never call  objMyTask.onPreExecute(), objMyTask.doInBackground(), objMyTask.onProgressUpdate(),  objMyTask.onPostExecute manually.The AsyncTask can be executed only once (an exception will be thrown if a second execution is attempted.)AsyncTask have Four Main Method... onPreExecute()  doInBackground() onProgressUpdate() onPostExecute()  onPreExecute-This method is called first when you start AsyncTask using objAsync.execute().And mostly this method is use for initializing dialog(ProgressDialog,CustomDialog) and showing. doInBackground-The main purpose of AsyncTask is accomplished by this method.Any non-UI thread process is running in this method.Such as Rss Feed Reader,Image and video Uploading and Downloading.You cant handle your View in this method.Because this method is non-UI thread.While any background process is running if you want to handle UI therea are  onProgressUpdate method. after completion of process this method send result to OnPostExecute. onProgressUpdate-While backgrounding task is running ,you can handle your UI using this method .Such as status of downloading or uploading task.and this method is called from  doInBackground.Using publishProgress() you can call onProgressUpdate method to update UI while process is running. onPostExecute -This method is called after the background computation finishes.The result of background process in passed in this method as parameters.And now you can dismiss progress dialog ,to indicate that background task is completed. You can cancel AsyncTask using objAsyncTask.cancel().then you just check in doInBackground, if (isCancelled()) { break; } else {        //continue... } See this Image For more Clear.

android 选择地区 省、市、县三级联动源码(自定义view控件 WheelView滚轮)

TouchEventDemo是一个说明如何处理触摸事件的示例TouchEventDemo用户界面浅蓝色区域是可以接受触摸事件的区域，用户可以在Android模拟器中使用鼠标点击屏幕，用以模拟触摸手机屏幕下方黑色区域是显示区域，用来显示触摸事件的类型、相对坐标、绝对坐标、触点压力、触点尺寸和历史数据量等信息

android 多线程实例源码下载

《HTML5与CSS3权威指南》范例及代码，共22章