如果一次性下載完apk文件，則進度值正常

如果中間有過暫停，則下載進度值會超過100%，但是文件下載下來是正常的，懷疑是暫停保存各個線程已完成進度的時候有問題。

哪位仁兄能看出問題所在：

@Override

public void run() {

// 設置線程下載位置

try {

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

con = (HttpURLConnection) url.openConnection();

con.setReadTimeout(5000);

con.setRequestMethod("GET");

// 設置下載位置

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

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

+ threadInfo.getEnd());

// 文件寫入路徑

String path = File.separator + Constants.FILE_DOWNLOAD

+ File.separator + fileInfo.getFileName();

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

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

// 在讀寫的時候跳過設置好的字節數，從下一個字節數開始讀寫

raf.seek(start);

Intent intent = new Intent(DownService.ACTION_UPDATE);

progress += threadInfo.getProgress();// 線程完成進度

// 開始下載

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

// 讀取數據

is = con.getInputStream();

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

int len = -1;

long time = System.currentTimeMillis();

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

// 寫入文件

raf.write(buffer, 0, len);

// 整個文件的完成進度

progress += len;

// 當前線程完成的進度

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

// 每隔500毫秒發送一次廣播刷新進度條

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());

// 發送廣播更新進度條

context.sendBroadcast(intent);

}

// 下載暫停時，保存下載進度

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;

}

}

// 標識當前線程執行完畢

isFinish = true;

// 檢查下載任務是否執行完畢

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();

}

}

}