标签：master 进度 java content lob oid get dialog ast
https://github.com/giantray/stackoverflow-java-top-qa/blob/master/contents/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog.md
Android -- 下载进度条(只要有网址就行)
原文地址：http://www.cnblogs.com/mafeng/p/6258681.html
