android http 慢,Android中的Apache HttpClient下载附件非常慢

@Override

protected Uri doInBackground(String... params) {

publishProgress("Downloading...");

try {

HttpPost searchPOST = new HttpPost("http://www.somesite.com/" + searchResult.getURLSuffix());

List formparams = new ArrayList();

//added parameters here...

UrlEncodedFormEntity paramsEntity = new UrlEncodedFormEntity(formparams, HTTP.UTF_8);

searchPOST.setEntity(paramsEntity);

HttpResponse manualResponse = client.execute(searchPOST);

Header fileNameHeader = manualResponse.getFirstHeader("Content-Disposition");

Pattern p = Pattern.compile("filename="(.+?)"");

Matcher m = p.matcher(fileNameHeader.getValue());

if (m.find()) {

String fileName = m.group(1);

InputStream zipStream = manualResponse.getEntity().getContent();

File cacheDir = context.getCacheDir();

String tempFileForZip = cacheDir.getAbsolutePath() + "/" + fileName;

FileOutputStream fos = new FileOutputStream(tempFileForZip);

int bytesDownloaded = 0;

try {

int c;

while ((c = zipStream.read()) != -1) {

fos.write(c);

bytesDownloaded++;

kilobytesDownloaded=(bytesDownloaded / 1000);

publishProgress((String[])null);

}

} finally {

if (zipStream != null) {

zipStream.close();

}

if (fos != null) {

fos.close();

}

}

fos.close();

String zipFilePath = tempFileForZip;

//Change to indeterminate

kilobytesDownloaded = fileSize;

publishProgress("Extracting...");

//TODO: Preferences for save directory

saveDirectory = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + "Downloads/");

ZipTools.unzipArchive(new File(zipFilePath), saveDirectory);

}

} catch (IllegalStateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

}

return Uri.fromFile(saveDirectory);

}