MP3播放器项目-编纂代码-5

MP3播放器项目---编写代码---5

??????????????????????????????????????? MP3播放器项目---编写代码---5

1.Mp3ListContentHandler

package hui.xml;import hui.model.Mp3Info;import java.util.List;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;public class Mp3ListContentHandler extends DefaultHandler {private List<Mp3Info> infos = null;private Mp3Info mp3Info = null;private String tagName = null;public Mp3ListContentHandler(List<Mp3Info> infos) {super();this.infos = infos;}public List<Mp3Info> getInfos() {return infos;}public void setInfos(List<Mp3Info> infos) {this.infos = infos;}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {String temp = new String(ch, start, length);if (tagName.equals("id")) {mp3Info.setId(temp);} else if (tagName.equals("mp3.name")) {mp3Info.setMp3Name(temp);} else if (tagName.equals("mp3.size")) {mp3Info.setMp3Size(temp);} else if (tagName.equals("lrc.name")) {mp3Info.setLrcName(temp);} else if (tagName.equals("lrc.size")) {mp3Info.setLrcSize(temp);}}@Overridepublic void endDocument() throws SAXException {}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {if (qName.equals("resource")) {infos.add(mp3Info);}tagName = "";}@Overridepublic void startDocument() throws SAXException {// TODO Auto-generated method stubsuper.startDocument();}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {this.tagName = localName;if (tagName.equals("resource")) {mp3Info = new Mp3Info();}}}

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2.AppConstant

package hui.mp3player;public interface AppConstant {public class PlayerMsg{public static final int PLAY_MSG = 1;public static final int PAUSE_MSG = 2;public static final int STOP_MSG = 3;}public class URL{public static final String BASE_URL = "http://192.168.1.2:8080/myapp/";}}

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3.DownloadService

package hui.mp3player;

import hui.download.HttpDownloader;
import hui.model.Mp3Info;
import hui.mp3player.AppConstant;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

public class DownloadService extends Service{

?@Override
?public IBinder onBind(Intent intent) {
??// TODO Auto-generated method stub
??return null;
?}

?//每次用户点击ListActivity当中的一个条目时，就会调用该方法
?@Override
?public int onStartCommand(Intent intent, int flags, int startId) {
??// TODO Auto-generated method stub
??//从Intent对象当中将Mp3Info对象取出
??Mp3Info mp3Info = (Mp3Info)intent.getSerializableExtra("mp3Info");
??//生成一个下载线程，并将Mp3Info对象作为参数传递到线程对象当中
??System.out.print("service----------"+mp3Info);
??DownloadThread downloadThread = new DownloadThread(mp3Info);
??//启动新线程
??Thread thread = new Thread(downloadThread);
??thread.start();
??return super.onStartCommand(intent, flags, startId);
?}
?
?class DownloadThread implements Runnable{
??private Mp3Info mp3Info = null;
??public DownloadThread(Mp3Info mp3Info){
???this.mp3Info = mp3Info;
??}
??@Override
??public void run() {
???//下载地址http://192.168.1.107:8081/mp3/a1.mp3
???//根据MP3文件的名字，生成下载地址
???String mp3Url = AppConstant.URL.BASE_URL + mp3Info.getMp3Name();
???String lrcUrl = AppConstant.URL.BASE_URL + mp3Info.getLrcName();
???//生成下载文件所用的对象
???HttpDownloader httpDownloader = new HttpDownloader();
???//将文件下载下来，并存储到SDCard当中
???int mp3Result = httpDownloader.downFile(mp3Url, "mp3/", mp3Info.getMp3Name());
???int lrcResult = httpDownloader.downFile(lrcUrl, "mp3/", mp3Info.getLrcName());
???/*String resultMessage = null;
???if(result == -1){
????resultMessage = "下载失败";
???}
???else if(result == 0){
????resultMessage = "文件已经存在，不需要重复下载";
???}
???else if(result == 1){
????resultMessage = "文件下载成功";
???}*/
???//使用Notification提示客户下载结果
??}
??
?}

}
4.LocalMp3ListActivity

package hui.mp3player;import hui.model.Mp3Info;import hui.utils.FileUtils;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import mars.mp3player.R;import android.app.ListActivity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.ListView;import android.widget.SimpleAdapter;public class LocalMp3ListActivity extends ListActivity {private List<Mp3Info> mp3Infos = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.local_mp3_list);}@Overrideprotected void onResume() {FileUtils fileUtils = new FileUtils();mp3Infos = fileUtils.getMp3Files("mp3/");List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();for (Iterator iterator = mp3Infos.iterator(); iterator.hasNext();) {Mp3Info mp3Info = (Mp3Info) iterator.next();HashMap<String, String> map = new HashMap<String, String>();map.put("mp3_name", mp3Info.getMp3Name());map.put("mp3_size", mp3Info.getMp3Size());list.add(map);}SimpleAdapter simpleAdapter = new SimpleAdapter(this, list,R.layout.mp3info_item, new String[] { "mp3_name", "mp3_size" },new int[] { R.id.mp3_name, R.id.mp3_size });setListAdapter(simpleAdapter);super.onResume();}@Overrideprotected void onListItemClick(ListView l, View v, int position, long id) {if(mp3Infos != null){Mp3Info mp3Info = mp3Infos.get(position);Intent intent = new Intent();intent.putExtra("mp3Info", mp3Info);intent.setClass(this, PlayerActivity.class);startActivity(intent);}}}

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5.MainActivity

package hui.mp3player;import mars.mp3player.R;import android.app.TabActivity;import android.content.Intent;import android.content.res.Resources;import android.os.Bundle;import android.widget.TabHost;public class MainActivity extends TabActivity{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);//得到TabHost对象，正对TabActivity的操作通常都有这个对象完成TabHost tabHost = getTabHost();//生成一个Intent对象，该对象指向一个ActivityIntent remoteIntent = new Intent();remoteIntent.setClass(this, Mp3ListActivity.class);//生成一个TabSpec对象，这个对象代表了一个页TabHost.TabSpec remoteSpec = tabHost.newTabSpec("Remote");Resources res = getResources();//设置该页的indicatorremoteSpec.setIndicator("Remote", res.getDrawable(android.R.drawable.stat_sys_download));//设置该页的内容remoteSpec.setContent(remoteIntent);//将设置好的TabSpec对象添加到TabHost当中tabHost.addTab(remoteSpec);Intent localIntent = new Intent();localIntent.setClass(this, LocalMp3ListActivity.class);TabHost.TabSpec localSpec = tabHost.newTabSpec("Local");localSpec.setIndicator("Local", res.getDrawable(android.R.drawable.stat_sys_upload));localSpec.setContent(localIntent);tabHost.addTab(localSpec);}}

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1 楼 pan147852 2012-02-20   高手 请问这个xml文档应怎么布局呀 求帮忙 ！！ 2 楼 xiaoyangh 2012-04-28   哪个xml?麻烦说明白点

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