3g应用-从指定的服务器上,下载资源如音乐,图片.文本等

package com.tarena.tts;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;

import com.tarena.util.Action;

public class Activity08 extends Activity {
private Button start;
private ProgressBar pb;
private EditText address;
private DownloadAction action;
private static final int MSG_PROGRESS = 1;