Android网络下载速度测试
开发工具：1. EC 2. SDK 1.1 3. ADT 0.8 原理：通过下载文件的大小，和当前读取的字节数，在固定的时间中检测速度,详细请看代码，我这里使用可一张图片做的测试：http://www.straitstimes.com/STI/STIMEDIA/image/20090324/BUSKING.jpg NetWorkSpeedInfo.java Android NetWork infopackage cc.androidos.speed;/** * A class for android network info* @author Wang Baoxi * @version 1.0 * @since 2009-5-27 */public class NetWorkSpeedInfo{ /**Network speed*/ publiclong speed = 0; /**Had finished bytes*/ publiclong hadFinishedBytes = 0; /**Total bytes of a file, default is 1024 bytes,1K*/ publiclong totalBytes = 1024; /**The net work type, 3G or GSM and so on*/ publicint networkType = 0; /**Down load the file percent 0----100*/ publicint downloadPercent = 0;} SpeedActivity.java Activity
package cc.androidos.speed;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;/** ** @author Wang Baoxi * @version 1.0 * @since 2009-5-27 */public class SpeedActivity extends Activity{ /** Called when the activity is first created. */ TextView fileLength = null; TextView speed = null; TextView hasDown = null; TextView percent = null; String url = ""; ImageView imageView = null; byte[] imageData = null; NetWorkSpeedInfo netWorkSpeedInfo = null; private final int UPDATE_SPEED = 1; @Override public void onCreate( Bundle savedInstanceState ) { super.onCreate( savedInstanceState ); setContentView( R.layout.main ); hasDown = ( TextView ) findViewById( R.id.hasDown ); fileLength = ( TextView ) findViewById( R.id.fileLength ); speed = ( TextView ) findViewById( R.id.speed ); percent = ( TextView ) findViewById( R.id.percent ); imageView = ( ImageView ) findViewById( R.id.ImageView01 ); Button b = ( Button ) findViewById( R.id.Button01 ); url = getString( R.string.image_url ); netWorkSpeedInfo = new NetWorkSpeedInfo(); b.setOnClickListener( new View.OnClickListener() { @Override public void onClick( View arg0 ) { //down load the file thread new Thread() { @Override public void run() { imageData = ReadFile.getFileFromUrl( url, netWorkSpeedInfo ); stop(); } }.start(); //get the speed , down load bytes ,update the view thread new Thread() { @Override public void run() { while ( netWorkSpeedInfo.hadFinishedBytes < netWorkSpeedInfo.totalBytes ) { netWorkSpeedInfo.downloadPercent = ( int ) (( ( double ) netWorkSpeedInfo.hadFinishedBytes / ( double ) netWorkSpeedInfo.totalBytes ) * 100); try { sleep( 1500 ); } catch ( InterruptedException e ) { e.printStackTrace(); } Log.e( "update,send the message to update", "" ); //update view handler.sendEmptyMessage( UPDATE_SPEED ); } //finished if( netWorkSpeedInfo.hadFinishedBytes == netWorkSpeedInfo.totalBytes ) { netWorkSpeedInfo.downloadPercent = ( int ) (( ( double ) netWorkSpeedInfo.hadFinishedBytes / ( double ) netWorkSpeedInfo.totalBytes ) * 100); handler.sendEmptyMessage( UPDATE_SPEED ); Log.e( "update", ",send the message to update and stop" ); stop(); } } }.start(); } } ); } /** * Handler for post message into OS */ private Handler handler = new Handler() { @Override public void handleMessage( Message msg ) { int value = msg.what; switch ( value ) { case UPDATE_SPEED: updateView(); break; default: break; } } }; /** * Update the view method */ private void updateView() { speed.setText( netWorkSpeedInfo.speed + "bytes/s" ); hasDown.setText( netWorkSpeedInfo.hadFinishedBytes + "bytes" ); fileLength.setText( netWorkSpeedInfo.totalBytes + "" ); percent.setText( netWorkSpeedInfo.downloadPercent+"%" ); if( imageData != null ) { Bitmap b = BitmapFactory.decodeByteArray( imageData, 0, imageData.length ); imageView.setImageBitmap( b ); } }} ReadFile.java Read file from web
package cc.androidos.speed;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;import android.util.Log;/** ** @author Wang Baoxi * @version 1.0 * @since 2009-5-27 */public class ReadFile{ /** * <p> * Read file from web * </p> * @param url * @param netWorkSpeedInfo * @return */ public static byte[] getFileFromUrl( String url,NetWorkSpeedInfo netWorkSpeedInfo ) { int currentByte = 0; int fileLength = 0; long startTime = 0; long intervalTime = 0; byte[] b = null; int bytecount = 0; URL urlx = null; URLConnection con = null; InputStream stream = null; try { Log.d( "URL:", url ); urlx = new URL( url ); con = urlx.openConnection(); con.setConnectTimeout( 20000 ); con.setReadTimeout( 20000 ); fileLength = con.getContentLength(); stream = con.getInputStream(); netWorkSpeedInfo.totalBytes = fileLength; b = new byte; startTime = System.currentTimeMillis(); while ( ( currentByte = stream.read() ) != -1 ) { netWorkSpeedInfo.hadFinishedBytes++; intervalTime = System.currentTimeMillis() - startTime; if(intervalTime==0){ netWorkSpeedInfo.speed = 1000; }else{ netWorkSpeedInfo.speed = (netWorkSpeedInfo.hadFinishedBytes / intervalTime ) * 1000; } if(bytecount<fileLength){ b = ( byte ) currentByte; } } } catch ( Exception e ) { Log.e( "exception : ", e.getMessage()+"" ); } finally { try { if( stream != null ) { stream.close(); } } catch ( Exception e ) { Log.e( "exception : ", e.getMessage() ); } } return b; }}
http://dl.iteye.com/upload/attachment/154537/c20095c9-e0e7-33d8-a850-e2ae8e2523cf.jpg
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