如果一次性下载完apk文件，则进度值正常

如果中间有过暂停，则下载进度值会超过100%，但是文件下载下来是正常的，怀疑是暂停保存各个线程已完成进度的时候有问题。

哪位仁兄能看出问题所在：

@Override

public void run() {

// 设置线程下载位置

try {

URL url = new URL(threadInfo.getUrl());

con = (HttpURLConnection) url.openConnection();

con.setReadTimeout(5000);

con.setRequestMethod("GET");

// 设置下载位置

int start = threadInfo.getStart() + threadInfo.getProgress();

con.setRequestProperty("Range", "bytes=" + start + "-"

+ threadInfo.getEnd());

// 文件写入路径

String path = File.separator + Constants.FILE_DOWNLOAD

+ File.separator + fileInfo.getFileName();

File downFile = FileUtils.getAppFile(context, path);

raf = new RandomAccessFile(downFile, "rwd");

// 在读写的时候跳过设置好的字节数，从下一个字节数开始读写

raf.seek(start);

Intent intent = new Intent(DownService.ACTION_UPDATE);

progress += threadInfo.getProgress();// 线程完成进度

// 开始下载

if (HttpStatus.SC_PARTIAL_CONTENT == con.getResponseCode()) {

// 读取数据

is = con.getInputStream();

byte[] buffer = new byte[1024 * 4];

int len = -1;

long time = System.currentTimeMillis();

while ((len = is.read(buffer)) != -1) {

// 写入文件

raf.write(buffer, 0, len);

// 整个文件的完成进度

progress += len;

// 当前线程完成的进度

threadInfo.setProgress(threadInfo.getProgress() + len);

// 每隔500毫秒发送一次广播刷新进度条

if (System.currentTimeMillis() - time > 1000) {

time = System.currentTimeMillis();

int percent = (int) (progress * 100 / fileInfo

.getLength());

String str = fileInfo.getFileName() + " ";

str += threadInfo.getThreadId();

str += " progress：" + progress;

str += " tp：" + threadInfo.getProgress();

str += " 差：" + (fileInfo.getLength() - progress);

str += " percent:" + percent;

LogUtils.i(str);

intent.putExtra(PROGRESS, percent);

intent.putExtra(FILE_ID, fileInfo.getId());

// 发送广播更新进度条

context.sendBroadcast(intent);

}

// 下载暂停时，保存下载进度

if (isPause) {

isRuning = false;

String str = fileInfo.getFileName() + " ";

str += threadInfo.getThreadId();

str += " progress：" + progress;

str += " tp：" + threadInfo.getProgress();

str += " 差：" + (fileInfo.getLength() - progress);

str += " pause ";

LogUtils.i(str);

dao.updateThread(threadInfo);

return;

}

}

// 标识当前线程执行完毕

isFinish = true;

// 检查下载任务是否执行完毕

checkAllThreadFinished();

}

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

if (is != null) {

is.close();

}

if (raf != null) {

raf.close();

}

if (con != null) {

con.disconnect();

}

} catch (Exception e2) {

e2.printStackTrace();

}

}

}