android多线程断点下载

代码说明：

android多线程断点下载 示例代码 package com.smart.activoty.download; import java.io.File; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.smart.impl.SmartDownloadProgressListener; import com.smart.impl.SmartFileDownloader; public class SmartDownloadActivity extends Activity { private ProgressBar downloadbar; private EditText pathText; private TextView resultView; private Handler handler = new Handler(){ @Override//信息 public void handleMessage(Message msg) { switch (msg.what) { case 1: int size = msg.getData().getInt("size"); downloadbar.setProgress(size); float result = (float)downlo