android多线程断点下载的源码，实时得到文件下载的长度，设置获取实体数据的范围、获取文件已下载文件长度、原始文件长度、线程数、本地保存文件、缓存各线程下载的长度、每条线程下载的长度、获取线程数、获取文件大孝更新指定线程最后下载的位置、构建文件下载器、保存记录文件、根据响应获取文件大孝监听下载数量的变化-android multithreading breakpoints download the source code, in real-time to get the length of the file download, set access to entity data range, get the file to download the file length, the length of the original file, the number of threads, and save the file locally cache the length of the threaded download, each the length of the threaded download, get the number of threads, access to the location specified thread last download file Daxiao update the build file download, save the log file to monitor changes in the number of downloads, according to the response to get the file size,