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我也读过类似的问题,但没有任何适用于我的作品。 问题是方法getProgress()返回非常大的值(如16300)。我做错了什么?显示下载进度
看到我的代码
public void download()
{
RandomAccessFile file = null;
InputStream inputStream = null;
HttpURLConnection connection = null;
try
{
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.connect();
String connectLength = connection.getHeaderField("Content-Length");
if(connectLength == null || Integer.parseInt(connectLength) < 1 || connectLength.equals(""))
error();
size = Long.parseLong(connectLength);
file = new RandomAccessFile(filePath,"rw");
inputStream = new BufferedInputStream(url.openStream());
int read ;
while((read = inputStream.read(buffer)) > 0 && status == States.DOWNLOADING)
{
file.write(buffer,0,read);
downloadedS += read;
}
}
}
public float getProgress()
{
return ((float)downloadedS/size)*100;
}
确实“Content-Length”的响应大小是否正确? –
什么是'downloadS'的类型?你在哪里启动和/或重置它? – blgt
已下载S很长; init在构造函数中。 (public Download(){downloadedS = 0; size = 0;} – dooplaye