java获取inputstream 没读完就 返回-1
while (cumlativeLen <= dataSize && (len = inputStream.read(buffer)) != -1) {
mergeRAFile.write(buffer, 0, len);
//计算累计下载的长度
cumlativeLen += len;
cumlativeLenKb = cumlativeLen / ONE_Kb;
writingPosition = start + cumlativeLen;
actualWritingPosition = actualStart + cumlativeLen;
publishMsg(cumlativeLen, cumlativeLenKb);
if (start + cumlativeLen >= end) {// 下载完成:程优化之后,新的End作为下载完成的标志
isDownloadCompleted = true;
break;
}
if (isStopWrite) { // 停止写入
if (null != threadCallback) {
LogUtils.debugNoLine(TAG, "Stop " + config.getFileName() + " ThreadId:" + config.getId());
threadCallback.onStopWrite(config.getId(), start, cacheingSize, end, isDownloadCompleted);
}
break;
}
}