Android在线考试系统源码

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.

这是我自己做的一个android英语学习软件，里面有登陆界面，tab的应用 list的应用 数据库的操作  等等 还一个小游戏不太完善，适合初学者一起研究~~ 里面还有一个英语词典。

资源描述一个开心网界面的小栗子  适合初学者  里面有listview的操作  fragment的切换  动态的menu菜单等

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android常用控件的代码实现，非常适合初学者，值得拥有(This demo shows us how to use the basic controls in android, it is really useful for the beginners, it is worthful)

Button Activity Source Code for Andriod.

android 自动打开微信并加好友 示例代码(Accessibility)

本例为java代码，在android系统实现手机与电脑通过udp方式通讯(This example is java code, in Android system to achieve mobile phone and computer through UDP communication)

private class ImageViewOnTouchListener implements OnTouchListener { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction() & MotionEvent.ACTION_MASK) {// 这里取出来的是event.getAction()返回的值的低八位，MotionEvent.ACTION_MASK是255， case MotionEvent.ACTION_DOWN: startPoint.set(event.getX(), event.getY()); break; case MotionEvent.ACTION_MOVE:// 移动过程，该事件会不断被触发 float dx = event.getX() -

这个Android过关游戏是原生代码，含200多关的麻将消消乐完整源代码，包括了一些商业应用嵌入，里面包括了广告嵌入接口、积分墙、积分墙对话框、开屏广告接口等，初始化接口在应用启动的时候调用,只需要定义一次。 　　关于插屏广告接口：插屏出现动画效果,0:ANIM_NONE为无动画,1:ANIM_SIMPLE为简单动画效果,2:ANIM_ADVANCE为高级动画效果，如果设置了横屏,则在有广告资源的情况下会是优先使用横屏图。