它演示了如何有效地加载大位图在非主UI线程，缓存位图（无论是在内存和磁盘），管理内存位图和UI元素，如ViewPager和ListView/ GridView控件显示位图。-It demonstrates how to load large bitmaps efficiently off the main UI thread, caching bitmaps (both in memory and on disk), managing bitmap memory and displaying b

这是一个在android上进行开发的实例，主要演示了多线程下载、断点续传的方法，有比较好的学习价值-This is a development in the android example, the main demonstration of multi-threaded download, HTTP method, a better learning value