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   源码介绍

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因暂时无服务端代码，仅能看客户端 音乐播放相关实现

package com.tarena.musicclient.activity;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;

import com.tarena.musicclient.R;
import com.tarena.musicclient.adapter.MusicAdapter;
import com.tarena.musicclient.biz.MusicBiz;
import com.tarena.musicclient.entity.Music;
import com.tarena.musicclient.service.DownloadService;

public class MainActivity extends Activity {
	private ListView listView;
	private MusicAdapter adapter;
	private List<Music> musics;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		setViews();
		setListeners();
		//启动异步任务  MusicBiz
		new MusicBiz(this).execute();
	}
	
	/**
	 * 添加监听
	 */
	private void setListeners() {
		listView.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				//startActivity  PlayMusicActivity
				Intent intent=new Intent(MainActivity.this, PlayMusicActivity.class);
				intent.putExtra("position", position);
				ArrayList<Music> ms=(ArrayList<Music>)musics;
				intent.putExtra("musics", ms);
				startActivity(intent);
			}
		});
		
		
		listView.setOnItemLongClickListener(new OnItemLongClickListener() {
			@Override
			public boolean onItemLongClick(AdapterView<?> parent, View view,
					final int position, long id) {
				//弹出 AlertDialog
				AlertDialog.Builder builder=
						new AlertDialog.Builder(MainActivity.this);
				builder.setTitle("文件操作")
							.setItems(new String[]{"下载","喜欢"}, new OnClickListener() {
								@Override
								public void onClick(DialogInterface dialog, int which) {
									switch (which) {
									case 0: //下载
										//启动DownloadService 传递path 
										Music m=musics.get(position);
										String path=m.getMusicpath();
										Intent intent=new Intent(MainActivity.this, DownloadService.class);
										intent.putExtra("path", path);
										startService(intent);
										break;
									}
								}
							});
				builder.create().show();
				return false;
			}
		});
	}
	
	/**
	 * 组件初始化
	 */
	private void setViews() {
		listView=(ListView)findViewById(R.id.listView);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	/**
	 * 更新ListView 
	 */
	public void updateListView(List<Music> musics){
		this.musics=musics;
		//更新ListView 创建自定义的Adapter
		adapter=new MusicAdapter(this, musics, listView);
		//listView.setAdapter
		listView.setAdapter(adapter);
	}
	
	@Override
	public void onBackPressed() {
		super.onBackPressed();
		adapter.stopThread();
	}
	
}