Android记事本App

android 右侧字母列表 abcde.... 放微信联系人

【实例简介】商城源码,包括前端和后端两部分

android 上传视频文件实例，含服务器源码下载

左右侧滑抽屉菜单

android 侧滑菜单例子源码下载

git播放

微信小程序获取用户openid源码（含后端java代码）

  　　每个应用程序都要使用数据，Android应用程序也不例外，Android使用开源的、与操作系统无关的SQL数据库 --大名鼎鼎的SQLite。SQLite是一款轻量级数据库，它的设计目的是嵌入式，而且它占用的资源非常少，在嵌入式设备中，可能只需要几百KB，这也是 Android 系统采用 SQLite 数据库的原因之一吧。简介轻量级使用 SQLite 只需要带一个动态库，就可以享受它的全部功能，而且那个动态库的尺寸想当小。独立性SQLite 数据库的核心引擎不需要依赖第三方软件，也不需要所谓的“安装”。隔离性SQLite 数据库中所有的信息（比如表、视图、触发器等）都包含在一个文件夹内，方便管理和维护。跨平台SQLite 目前支持大部分操作系统，不至电脑操作系统更在众多的手机系统也是能够运行，比如：Android。多语言接口SQLite 数据库支持多语言编程接口。安全性SQLite 数据库通过数据库级上的独占性和共享锁来实现独立事务处理。这意味着多个进程可以在同一时间从同一数据库读取数据，但只能有一个可以写入数据。

android短信功能 核心代码：package cn.edu.siso;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import javax.xml.parsers.SAXParserFactory;import org.xml.sax.InputSource;import org.xml.sax.XMLReader;import android.app.ListActivity;import android.content.Intent;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.view.Window;import android.widget.Button;import android.widget.ListView;import android.widget.SimpleAdapter;import cn.edu.ContentProvide.Diary.DiaryColumns;import cn.edu.Info.MyInfo;import cn.edu.MyContentHandler.MyContentHandler;import cn.edu.siso.WareHouselistview.SMSBsharpturn;import cn.edu.siso.WareHouselistview.SMSFriendTab;import cn.edu.siso.WareHouselistview.SMSHavefanTab;import cn.edu.siso.WareHouselistview.SMSLoverTab;import cn.edu.siso.WareHouselistview.SMSSchooljoke;import cn.edu.siso.WareHouselistview.SMSapologize;import cn.edu.siso.WareHouselistview.SMShumorjokes;import cn.edu.siso.WareHouselistview.SMSlovewords;import cn.edu.siso.WareHouselistview.SMSmylove;import cn.edu.siso.WareHouselistview.SMSplayful;public class WareHouseActivity extends ListActivity { /** Called when the activity is first created. */ private List mp3Infos=null; private ListView listview; private Button back,updata; public static final String[] PROJECTION = new String[] { DiaryColumns._ID,DiaryColumns.TITLE, DiaryColumns.CREATED }; private Touch touch=new Touch(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.warehouse); listview=(ListView) findViewById(android.R.id.list); listview.setScrollingCacheEnabled(false); ShowListView(); back=(Button) findViewById(R.id.back); updata=(Button) findViewById(R.id.updata); back.setOnClickListener(new backlistener()); updata.setOnClickListener(new updatalistener()); back.setOnTouchListener(touch); updata.setOnTouchListener(touch); } private SimpleAdapter budildSimpleAdapter(List mp3Infos){ List list=new ArrayList(); for (Iterator iterator = mp3Infos.iterator(); iterator.hasNext();) { MyInfo mp3Info = (MyInfo) iterator.next(); HashMap map=new HashMap(); map.put("name", mp3Info.getName()); map.put("listimageview", R.drawable.image); list.add(map); } SimpleAdapter listadapter=new SimpleAdapter(this, list, R.layout.textview, new String[]{"name","listimageview"}, new int[]{R.id.houseText,R.id.listimageview}); return listadapter ; } private void ShowListView(){ mp3Infos=pares(R.raw.information); SimpleAdapter listadapter= budildSimpleAdapter(mp3Infos); setListAdapter(listadapter); } public List pares(Object xmlname){ List info=new ArrayList(); try { SAXParserFactory factory=SAXParserFactory.newInstance(); XMLReader reader=factory.newSAXParser().getXMLReader(); MyContentHandler mycontenthandler=new MyContentHandler(info); reader.setContentHandler(mycontenthandler); reader.parse(new InputSource(getResources().openRawResource((Integer) xmlname))); } catch (Exception e) { e.printStackTrace(); } return info; } @Override protected void onListItemClick(ListView l, View v, int position, long id) { // TODO Auto-generated method stub //MyInfo myinfo=mp3Infos.get(position); //System.out.println("myinfo-------" myinfo); Intent intent =new Intent(); switch(position){ case 0: intent.setClass(WareHouseActivity.this, SMSapologize.class); startActivity(intent); break; case 1: intent.setClass(WareHouseActivity.this, SMSmylove.class); startActivity(intent); break; case 2: intent.setClass(WareHouseActivity.this, SMSlovewords.class); startActivity(intent); break; case 3: intent.setClass(WareHouseActivity.this, SMSHavefanTab.class); startActivity(intent); break; case 4: intent.setClass(WareHouseActivity.this, SMSLoverTab.class); startActivity(intent); break; case 5: intent.setClass(WareHouseActivity.this, SMSplayful.class); startActivity(intent); break; case 6: intent.setClass(WareHouseActivity.this, SMSBsharpturn.class); startActivity(intent); break; case 7: intent.setClass(WareHouseActivity.this, SMShumorjokes.class); startActivity(intent); break; case 8: intent.setClass(WareHouseActivity.this, SMSFriendTab.class); startActivity(intent); break; case 9: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 10: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 11: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 12: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 13: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 14: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 15: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; case 16: intent.setClass(WareHouseActivity.this, SMSSchooljoke.class); startActivity(intent); break; } super.onListItemClick(l, v, position, id); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // TODO Auto-generated method stub if(keyCode==KeyEvent.KEYCODE_BACK&&event.getRepeatCount()==0){ //需要处理 Intent intent =new Intent(); intent.setClass(WareHouseActivity.this, InformationActivityActivity.class); startActivity(intent); finish(); } return false; } class backlistener implements Button.OnClickListener{ @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent = new Intent(); intent.setClass(WareHouseActivity.this,InformationActivityActivity.class); startActivity(intent); finish(); }} class updatalistener implements Button.OnClickListener{ @Override public void onClick(View v) { ShowListView(); }}}

android中 电子钟和时钟 的基本用法