[英]How to determine that the file has finished downloaded
我试图通过确定下载固定大小的文件花费多少时间来计算网络的带宽。
starttime=Calendar.getInstance().getTimeInMillis();
HttpResponse response=cts.getContent();
if(response != null)
endtime=Calendar.getInstance().getTimeInMillis();
这是我的getContent()
方法:
public HttpResponse getContent()
{
HttpClient httpClient = new DefaultHttpClient();
HttpGet postRequest = new HttpGet("myserverurl");
try {
Log.i(tag,"before execute");
HttpResponse response = httpClient.execute(postRequest);
Log.i(tag,"after execute");
HttpEntity httpEntity = response.getEntity();
is = httpEntity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
Log.i(tag,sb.toString());
response.toString();
return response;
} catch (Exception e) {
Log.i(tag,"execption="+e);
return null;
}
}
我计算该方法响应的结束时间。 我的问题是什么时候才是计算结束时间的正确时间? 如果我在下线后立即采取结束时间:
HttpEntity httpEntity = response.getEntity();
我获得的带宽非常高,当执行while循环后执行此操作时,带宽完全不同。
哪种方法是正确的? 文件何时完全下载?
据我了解,它是同步的,反对异步的,所以在存储响应之后,下载就结束了
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