上拉加载 和下拉刷新

android 开发中要的进入程序的时候的页面翻页功能，非常不错，请仔细阅读(android development program when you want to enter the page scrolling, which is very good, please read)

Android的基本2D图形绘制 文档下载

这是一个很经典的关于电子琴的作业，是学习安卓的一个很好的例程，使我们上课的时候老师让我们做的，可以运行的。(This is a classic on the keyboard operation, Andrews is a good learning routines, so that our class when the teacher asked us to do, you can run.)

启动新的Activity,并传递参数，制作的信息录入，在第二个界面显示 public class MainActivity extends Activity {       protected void onCreate(Bundle savedInstanceState) {   .......    button.setOnClickListener(new View.OnClickListener(){//点击该按钮会打开一个新的Activity             public void onClick(View v) {              Intent intent = new Intent(MainActivity.this, NewActivity.class) Bundle bundle = new Bundle();//该类用作携带数据 bundle.putString("na

android点餐系统，非常好用，适合用作移植或者自己学习使用，非常好的代码。欢迎大家下载，分享。谢谢支持。

说明：  自己制作了一个日历，是用calendarView写的，可以添加事务。但由于我没写数据库，所以还不能保存事务，只是给大家写了一个模板吧，大家可以连本地数据库，也可以链接云端。(I made a calendar to add transactions. But because I did not write the database, so I can not save the transaction, just write a template for you, you can connect to the local database, you can also link to the cloud.)

android新增按键值流程，从底层到中间层再到上层app，对linux和android framework有个一定的认识(android key value added processes, from the bottom to the middle layer and then to the upper app, android framework for linux and have a certain understanding of)

通过自定义listview 实现

package com;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class VolatileTest {public static void main(String[] args) throws InterruptedException {final Counter counter = new Counter();ExecutorService threadPool = Executors.newCachedThreadPool();for (int i = 0; i < 1000; i++) {/*new Thread() {@Overridepublic void run() {counter.inc();};}.start();*/threadPool.execute(new Runnable() {@Overridepublic void run() {counter.inc();}});}// Thread.sleep(3000);System.out.println(counter);}}

电子杂志（带翻页效果）源码，效果非常逼真，想做电子书的朋友可以研究下