Androidネットワークマルチスレッドブレークポイントダウンロード
50495 ワード
Androidネットワークマルチスレッドブレークポイントダウンロード
1.Androidエンジニアリングwww.AFITYの作成com
Project name:MulThreadDownloader
www.AFITY.com
BuildTarget:Android2.1
www.AFITY.com
Application name:マルチスレッドブレークポイントダウンロードwww.AFITY.com
Package name:com.changcheng.download
www.AFITY.com
Create Activity:MulThreadDownloader
www.AFITY.com
Min SDK Version:7
1.Androidエンジニアリングwww.AFITYの作成com
Project name:MulThreadDownloader
www.AFITY.com
BuildTarget:Android2.1
www.AFITY.com
Application name:マルチスレッドブレークポイントダウンロードwww.AFITY.com
Package name:com.changcheng.download
www.AFITY.com
Create Activity:MulThreadDownloader
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Min SDK Version:7
2.AndroidManifest.xml www.AFITY.com
<?xml version="1.0" encoding="utf-8"?> www.AFITY.com
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.changcheng.download"
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android:versionCode="1"
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android:versionName="1.0"> www.AFITY.com
<application android:icon="@drawable/icon" android:label="@string/app_name"> www.AFITY.com
<activity android:name=".MulThreadDownloader" www.AFITY.com
android:label="@string/app_name">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" /> www.AFITY.com
<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application> www.AFITY.com
<uses-sdk android:minSdkVersion="7" /> www.AFITY.com
<!-- SDCard -->
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<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
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<!-- SDCard -->
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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> www.AFITY.com
<!-- internet -->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest> www.AFITY.com
3.strings.xml
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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<string name="hello">Hello World, DownloadActivity!</string>
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<string name="app_name"> </string> www.AFITY.com
<string name="path"> </string>
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<string name="downloadbutton"> </string>
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<string name="sdcarderror">SDCard </string>
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</resources>
4.main.xml www.AFITY.com
<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:orientation="vertical" www.AFITY.com
android:layout_width="fill_parent" www.AFITY.com
android:layout_height="fill_parent" www.AFITY.com
>
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<!-- -->
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<TextView www.AFITY.com
android:layout_width="fill_parent"
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android:layout_height="wrap_content" www.AFITY.com
android:text="@string/path"
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/>
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<EditText www.AFITY.com
android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:text="http://www.winrar.com.cn/download/wrar380sc.exe"
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android:id="@+id/path" www.AFITY.com
/>
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<!-- -->
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<Button www.AFITY.com
android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/downloadbutton"
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android:id="@+id/button"
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/>
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<!-- -->
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<ProgressBar
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android:layout_width="fill_parent"
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android:layout_height="20dip" www.AFITY.com
style="?android:attr/progressBarStyleHorizontal"
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android:id="@+id/downloadbar"/> www.AFITY.com
<!-- % -->
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<TextView www.AFITY.com
android:layout_width="fill_parent"
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android:layout_height="wrap_content" www.AFITY.com
android:gravity="center"
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android:id="@+id/resultView" www.AFITY.com
/> www.AFITY.com
</LinearLayout>
5.MulThreadDownloader
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package com.changcheng.download;
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import java.io.File;
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import com.changcheng.net.download.DownloadProgressListener;
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import com.changcheng.net.download.FileDownloader; www.AFITY.com
import com.changcheng.download.R;
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import android.app.Activity;
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import android.os.Bundle;
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import android.os.Environment;
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import android.os.Handler;
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import android.os.Message;
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import android.view.View;
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import android.widget.Button; www.AFITY.com
import android.widget.EditText;
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import android.widget.ProgressBar; www.AFITY.com
import android.widget.TextView;
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import android.widget.Toast; www.AFITY.com
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public class MulThreadDownloader extends Activity {
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private EditText pathText; www.AFITY.com
private ProgressBar progressBar; www.AFITY.com
private TextView resultView;
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private Handler handler = new Handler(){
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@Override
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public void handleMessage(Message msg) { www.AFITY.com
if(!Thread.currentThread().isInterrupted()){
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switch (msg.what) { www.AFITY.com
case 1: www.AFITY.com
//
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int size = msg.getData().getInt("size");
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progressBar.setProgress(size); www.AFITY.com
int result = (int)(((float)size/(float)progressBar.getMax()) * 100); www.AFITY.com
resultView.setText(result+ "%");
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if(progressBar.getMax() == size){ www.AFITY.com
Toast.makeText(MulThreadDownloader.this, " ", 1).show();
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}
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break;
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case -1: www.AFITY.com
String error = msg.getData().getString("error"); www.AFITY.com
Toast.makeText(MulThreadDownloader.this, error, 1).show(); www.AFITY.com
break;
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} www.AFITY.com
}
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super.handleMessage(msg); www.AFITY.com
}
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};
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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pathText = (EditText)this.findViewById(R.id.path);
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progressBar = (ProgressBar)this.findViewById(R.id.downloadbar);
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resultView = (TextView)this.findViewById(R.id.resultView); www.AFITY.com
Button button = (Button)this.findViewById(R.id.button); www.AFITY.com
button.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) { www.AFITY.com
String path = pathText.getText().toString(); www.AFITY.com
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ www.AFITY.com
// ， ， ， Android www.AFITY.com
download(path, Environment.getExternalStorageDirectory()); www.AFITY.com
}else{
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Toast.makeText(MulThreadDownloader.this, R.string.sdcarderror, 1).show(); www.AFITY.com
}
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} www.AFITY.com
});
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}
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/** www.AFITY.com
*
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* @param path www.AFITY.com
* @param saveDir www.AFITY.com
*/
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// Android UI ， ， UI
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public void download(final String path, final File saveDir){
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new Thread(new Runnable() {
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@Override www.AFITY.com
public void run() {
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FileDownloader downer = newFileDownloader(MulThreadDownloader.this, path, saveDir, 3); www.AFITY.com
progressBar.setMax(downer.getFileSize());//
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try { www.AFITY.com
downer.download(new DownloadProgressListener(){
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@Override www.AFITY.com
public void onDownloadSize(int size) {
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Message msg = new Message(); www.AFITY.com
msg.what = 1; www.AFITY.com
msg.getData().putInt("size", size);
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handler.sendMessage(msg);// www.AFITY.com
}});
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} catch (Exception e) {
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Message msg = new Message(); www.AFITY.com
msg.what = -1; www.AFITY.com
msg.getData().putString("error", " "); www.AFITY.com
handler.sendMessage(msg);
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} www.AFITY.com
} www.AFITY.com
}).start(); www.AFITY.com
}
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}
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6.FileDownload www.AFITY.com
package com.changcheng.net.download;
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import java.io.File; www.AFITY.com
import java.io.RandomAccessFile; www.AFITY.com
import java.net.HttpURLConnection;
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import java.net.URL; www.AFITY.com
import java.util.LinkedHashMap; www.AFITY.com
import java.util.Map; www.AFITY.com
import java.util.UUID; www.AFITY.com
import java.util.concurrent.ConcurrentHashMap;
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import java.util.regex.Matcher; www.AFITY.com
import java.util.regex.Pattern; www.AFITY.com
import com.changcheng.download.service.FileService;
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import android.content.Context;
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import android.util.Log; www.AFITY.com
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/**
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* www.AFITY.com
* @author [email protected] www.AFITY.com
*
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*/ www.AFITY.com
public class FileDownloader {
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private Context context; www.AFITY.com
private FileService fileService;
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private static final String TAG = "FileDownloader";
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/* */
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private int downloadSize = 0; www.AFITY.com
/* */ www.AFITY.com
private int fileSize = 0;
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/* */ www.AFITY.com
private DownloadThread[] threads; www.AFITY.com
/* */
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private URL url;
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/* */
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private File saveFile;
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/* */
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private File logFile;
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/* */
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private Map<Integer, Integer> data = new ConcurrentHashMap<Integer, Integer>(); www.AFITY.com
/* */
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private int block; www.AFITY.com
private String downloadUrl;// www.AFITY.com
/** www.AFITY.com
* www.AFITY.com
*/
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public int getThreadSize() {
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return threads.length;
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} www.AFITY.com
/**
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*
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* @return
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*/ www.AFITY.com
public int getFileSize() { www.AFITY.com
return fileSize;
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}
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/**
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* www.AFITY.com
* @param size
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*/
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protected synchronized void append(int size) { www.AFITY.com
downloadSize += size;
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} www.AFITY.com
/** www.AFITY.com
*
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* @param threadId id
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* @param pos
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*/ www.AFITY.com
protected void update(int threadId, int pos) { www.AFITY.com
this.data.put(threadId, pos);
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}
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/**
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* www.AFITY.com
*/ www.AFITY.com
protected synchronized void saveLogFile() {
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this.fileService.update(this.downloadUrl, this.data);
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} www.AFITY.com
/** www.AFITY.com
* www.AFITY.com
* @param downloadUrl
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* @param fileSaveDir www.AFITY.com
* @param threadNum www.AFITY.com
*/ www.AFITY.com
public FileDownloader(Context context, String downloadUrl, File fileSaveDir, int threadNum) {
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try {
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this.context = context;
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this.downloadUrl = downloadUrl; www.AFITY.com
fileService = new FileService(context); www.AFITY.com
this.url = new URL(downloadUrl); www.AFITY.com
if(!fileSaveDir.exists()) fileSaveDir.mkdirs();
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this.threads = new DownloadThread[threadNum]; www.AFITY.com
HttpURLConnection conn = (HttpURLConnection) url.openConnection(); www.AFITY.com
conn.setConnectTimeout(6*1000);
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conn.setRequestMethod("GET"); www.AFITY.com
conn.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"); www.AFITY.com
conn.setRequestProperty("Accept-Language", "zh-CN"); www.AFITY.com
conn.setRequestProperty("Referer", downloadUrl); www.AFITY.com
conn.setRequestProperty("Charset", "UTF-8");
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conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); www.AFITY.com
conn.setRequestProperty("Connection", "Keep-Alive"); www.AFITY.com
conn.connect(); www.AFITY.com
printResponseHeader(conn); www.AFITY.com
if (conn.getResponseCode()==200) { www.AFITY.com
this.fileSize = conn.getContentLength();//
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if (this.fileSize <= 0) throw new RuntimeException(" "); www.AFITY.com
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String filename = getFileName(conn); www.AFITY.com
this.saveFile = new File(fileSaveDir, filename);/* */
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Map<Integer, Integer> logdata = fileService.getData(downloadUrl);
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if(logdata.size()>0){ www.AFITY.com
data.putAll(logdata);
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} www.AFITY.com
this.block = this.fileSize / this.threads.length + 1; www.AFITY.com
if(this.data.size()==this.threads.length){
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for (int i = 0; i < this.threads.length; i++) { www.AFITY.com
this.downloadSize += this.data.get(i+1)-(this.block * i);
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} www.AFITY.com
print(" "+ this.downloadSize);
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}
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}else{ www.AFITY.com
throw new RuntimeException(" "); www.AFITY.com
}
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} catch (Exception e) {
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print(e.toString()); www.AFITY.com
throw new RuntimeException(" ");
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}
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} www.AFITY.com
/** www.AFITY.com
* www.AFITY.com
*/ www.AFITY.com
private String getFileName(HttpURLConnection conn) { www.AFITY.com
String filename = this.url.toString().substring(this.url.toString().lastIndexOf('/') + 1); www.AFITY.com
if(filename==null || "".equals(filename.trim())){//
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for (int i = 0;; i++) { www.AFITY.com
String mine = conn.getHeaderField(i);
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if (mine == null) break; www.AFITY.com
if("content-disposition".equals(conn.getHeaderFieldKey(i).toLowerCase())){ www.AFITY.com
Matcher m = Pattern.compile(".*filename=(.*)").matcher(mine.toLowerCase());
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if(m.find()) return m.group(1); www.AFITY.com
} www.AFITY.com
}
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filename = UUID.randomUUID()+ ".tmp";//
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}
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return filename; www.AFITY.com
} www.AFITY.com
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/**
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* www.AFITY.com
* @param listener , , null www.AFITY.com
* @return www.AFITY.com
* @throws Exception www.AFITY.com
*/ www.AFITY.com
public int download(DownloadProgressListener listener) throws Exception{ www.AFITY.com
try {
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if(this.data.size() != this.threads.length){
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this.data.clear();
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for (int i = 0; i < this.threads.length; i++) {
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this.data.put(i+1, this.block * i); www.AFITY.com
} www.AFITY.com
}
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for (int i = 0; i < this.threads.length; i++) {
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int downLength = this.data.get(i+1) - (this.block * i);
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if(downLength < this.block && this.data.get(i+1)<this.fileSize){ // ,
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RandomAccessFile randOut = newRandomAccessFile(this.saveFile, "rw");
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if(this.fileSize>0) randOut.setLength(this.fileSize); www.AFITY.com
randOut.seek(this.data.get(i+1));
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this.threads[i] = new DownloadThread(this, this.url, randOut,this.block, this.data.get(i+1), i+1); www.AFITY.com
this.threads[i].setPriority(7);
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this.threads[i].start();
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}else{
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this.threads[i] = null; www.AFITY.com
}
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} www.AFITY.com
this.fileService.save(this.downloadUrl, this.data); www.AFITY.com
boolean notFinish = true;//
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while (notFinish) {//
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Thread.sleep(900);
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notFinish = false;// www.AFITY.com
for (int i = 0; i < this.threads.length; i++){
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if (this.threads[i] != null && !this.threads[i].isFinish()) { www.AFITY.com
notFinish = true;//
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if(this.threads[i].getDownLength() == -1){// ,
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RandomAccessFile randOut = newRandomAccessFile(this.saveFile, "rw"); www.AFITY.com
randOut.seek(this.data.get(i+1)); www.AFITY.com
this.threads[i] = new DownloadThread(this, this.url, randOut, this.block, this.data.get(i+1), i+1);
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this.threads[i].setPriority(7); www.AFITY.com
this.threads[i].start(); www.AFITY.com
} www.AFITY.com
}
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}
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if(listener!=null) listener.onDownloadSize(this.downloadSize);
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}
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fileService.delete(this.downloadUrl); www.AFITY.com
} catch (Exception e) { www.AFITY.com
print(e.toString()); www.AFITY.com
throw new Exception(" ");
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}
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return this.downloadSize;
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} www.AFITY.com
/** www.AFITY.com
* Http
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* @param http
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* @return
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*/
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public static Map<String, String> getHttpResponseHeader(HttpURLConnection http) { www.AFITY.com
Map<String, String> header = new LinkedHashMap<String, String>();
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for (int i = 0;; i++) { www.AFITY.com
String mine = http.getHeaderField(i); www.AFITY.com
if (mine == null) break; www.AFITY.com
header.put(http.getHeaderFieldKey(i), mine);
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} www.AFITY.com
return header;
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}
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/**
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* Http
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* @param http
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*/ www.AFITY.com
public static void printResponseHeader(HttpURLConnection http){ www.AFITY.com
Map<String, String> header = getHttpResponseHeader(http); www.AFITY.com
for(Map.Entry<String, String> entry : header.entrySet()){ www.AFITY.com
String key = entry.getKey()!=null ? entry.getKey()+ ":" : "";
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print(key+ entry.getValue()); www.AFITY.com
} www.AFITY.com
} www.AFITY.com
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private static void print(String msg){ www.AFITY.com
Log.i(TAG, msg);
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}
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} www.AFITY.com
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7.DownloadProgressListener
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package com.changcheng.net.download; www.AFITY.com
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public interface DownloadProgressListener { www.AFITY.com
public void onDownloadSize(int size);
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} www.AFITY.com
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8.FileService
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package com.changcheng.download.service; www.AFITY.com
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import java.util.HashMap; www.AFITY.com
import java.util.Map; www.AFITY.com
import android.content.Context;
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import android.database.Cursor; www.AFITY.com
import android.database.sqlite.SQLiteDatabase; www.AFITY.com
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/**
www.AFITY.com
* bean www.AFITY.com
*
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*/
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public class FileService { www.AFITY.com
private DBOpenHelper openHelper; www.AFITY.com
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public FileService(Context context) { www.AFITY.com
openHelper = new DBOpenHelper(context); www.AFITY.com
} www.AFITY.com
/** www.AFITY.com
*
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* @param path
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* @return www.AFITY.com
*/ www.AFITY.com
public Map<Integer, Integer> getData(String path){
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SQLiteDatabase db = openHelper.getReadableDatabase();
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Cursor cursor = db.rawQuery("select threadid, position from filedown where downpath=?", new String[]{path});
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Map<Integer, Integer> data = new HashMap<Integer, Integer>(); www.AFITY.com
while(cursor.moveToNext()){
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data.put(cursor.getInt(0), cursor.getInt(1));
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}
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cursor.close(); www.AFITY.com
db.close(); www.AFITY.com
return data;
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} www.AFITY.com
/** www.AFITY.com
* www.AFITY.com
* @param path
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* @param map
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*/
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public void save(String path, Map<Integer, Integer> map){//int threadid, int position
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SQLiteDatabase db = openHelper.getWritableDatabase();
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db.beginTransaction();
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try{ www.AFITY.com
for(Map.Entry<Integer, Integer> entry : map.entrySet()){
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db.execSQL("insert into filedown(downpath, threadid, position) values(?,?,?)",
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new Object[]{path, entry.getKey(), entry.getValue()});
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}
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db.setTransactionSuccessful();
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}finally{ www.AFITY.com
db.endTransaction(); www.AFITY.com
} www.AFITY.com
db.close();
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}
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/** www.AFITY.com
* www.AFITY.com
* @param path
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* @param map
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*/ www.AFITY.com
public void update(String path, Map<Integer, Integer> map){ www.AFITY.com
SQLiteDatabase db = openHelper.getWritableDatabase();
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db.beginTransaction(); www.AFITY.com
try{ www.AFITY.com
for(Map.Entry<Integer, Integer> entry : map.entrySet()){
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db.execSQL("update filedown set position=? where downpath=? and threadid=?",
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new Object[]{entry.getValue(), path, entry.getKey()}); www.AFITY.com
} www.AFITY.com
db.setTransactionSuccessful();
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}finally{ www.AFITY.com
db.endTransaction();
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}
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db.close(); www.AFITY.com
}
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/**
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* ， www.AFITY.com
* @param path www.AFITY.com
*/
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public void delete(String path){
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SQLiteDatabase db = openHelper.getWritableDatabase();
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db.execSQL("delete from filedown where downpath=?", new Object[]{path});
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db.close();
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} www.AFITY.com
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}
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9.DownloadThread
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package com.changcheng.net.download;
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import java.io.InputStream; www.AFITY.com
import java.io.RandomAccessFile;
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import java.net.HttpURLConnection; www.AFITY.com
import java.net.URL; www.AFITY.com
import android.util.Log; www.AFITY.com
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public class DownloadThread extends Thread { www.AFITY.com
private static final String TAG = "DownloadThread";
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private RandomAccessFile saveFile; www.AFITY.com
private URL downUrl;
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private int block;
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/* */
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private int threadId = -1;
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private int startPos; www.AFITY.com
private int downLength;
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private boolean finish = false; www.AFITY.com
private FileDownloader downloader;
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public DownloadThread(FileDownloader downloader, URL downUrl, RandomAccessFile saveFile, int block, int startPos, int threadId) { www.AFITY.com
this.downUrl = downUrl; www.AFITY.com
this.saveFile = saveFile; www.AFITY.com
this.block = block; www.AFITY.com
this.startPos = startPos;
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this.downloader = downloader; www.AFITY.com
this.threadId = threadId; www.AFITY.com
this.downLength = startPos - (block * (threadId - 1)); www.AFITY.com
} www.AFITY.com
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@Override www.AFITY.com
public void run() {
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if(downLength < block){//
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try {
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HttpURLConnection http = (HttpURLConnection)downUrl.openConnection();
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http.setRequestMethod("GET");
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http.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"); www.AFITY.com
http.setRequestProperty("Accept-Language", "zh-CN");
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http.setRequestProperty("Referer", downUrl.toString());
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http.setRequestProperty("Charset", "UTF-8");
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http.setRequestProperty("Range", "bytes=" + this.startPos + "-"); www.AFITY.com
http.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); www.AFITY.com
http.setRequestProperty("Connection", "Keep-Alive"); www.AFITY.com
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InputStream inStream = http.getInputStream();
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int max = block>1024 ? 1024 : (block>10 ? 10 : 1); www.AFITY.com
byte[] buffer = new byte[max]; www.AFITY.com
int offset = 0; www.AFITY.com
print(" " + this.threadId + " "+ this.startPos+ " ");
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while (downLength < block && (offset = inStream.read(buffer, 0, max)) != -1) { www.AFITY.com
saveFile.write(buffer, 0, offset);
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downLength += offset; www.AFITY.com
downloader.update(this.threadId, block * (threadId - 1) +downLength);
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downloader.saveLogFile();
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downloader.append(offset); www.AFITY.com
int spare = block-downLength;//
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if(spare < max) max = (int) spare;
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} www.AFITY.com
saveFile.close();
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inStream.close(); www.AFITY.com
print(" " + this.threadId + " ");
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this.finish = true;
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this.interrupt(); www.AFITY.com
} catch (Exception e) { www.AFITY.com
this.downLength = -1; www.AFITY.com
print(" "+ this.threadId+ ":"+ e); www.AFITY.com
} www.AFITY.com
}
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} www.AFITY.com
private static void print(String msg){ www.AFITY.com
Log.i(TAG, msg);
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}
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/** www.AFITY.com
* www.AFITY.com
* @return www.AFITY.com
*/
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public boolean isFinish() {
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return finish;
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}
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/** www.AFITY.com
*
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* @return -1, www.AFITY.com
*/
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public long getDownLength() { www.AFITY.com
return downLength;
}
}
package com.changcheng.download.service; www.AFITY.com
import android.content.Context; www.AFITY.com
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper; www.AFITY.com
public class DBOpenHelper extends SQLiteOpenHelper {
private static final String DBNAME = "download.db";
private static final int VERSION = 2; www.AFITY.com
public DBOpenHelper(Context context) { www.AFITY.com
super(context, DBNAME, null, VERSION);
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}
@Override www.AFITY.com
public void onCreate(SQLiteDatabase db) { www.AFITY.com
db.execSQL("CREATE TABLE IF NOT EXISTS filedown (id integer primary key autoincrement, downpath varchar(100), threadid INTEGER, position INTEGER)"); www.AFITY.com
} www.AFITY.com
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { www.AFITY.com
db.execSQL("DROP TABLE IF EXISTS filedown"); www.AFITY.com
onCreate(db);
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}
}