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 info

 

package cc.androidos.speed;


/**
 * A class for android network info
 * @author Wang Baoxi
 * @version 1.0
 * @since 2009-5-27
 */
public class NetWorkSpeedInfo
{

    /**Network speed*/
    public  long speed = 0;
    /**Had finished bytes*/
    public  long hadFinishedBytes = 0;
    /**Total bytes of a file, default is 1024 bytes,1K*/
    public  long totalBytes = 1024;

    /**The net work type, 3G or GSM and so on*/
    public  int networkType = 0;

    /**Down load the file percent 0----100*/
    public  int 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[fileLength];
            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[bytecount++] = ( 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;
    }

}

 

 

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