Downloadmanager is the download tool provided by Android 4.0. For the first time, I encountered a lot of difficulties, but after experiencing difficulties and obstacles, I found that it was not difficult, but I had to understand that idea.
Http://developer.android.com/reference/android/app/DownloadManager.html
Http://aswang.iteye.com/blog/1424149
Http://hi.baidu.com/qmiao128/item/64e5e1ed60f9540d560f1d26
Http://blog.sina.com.cn/s/blog_68d72c9b01010ngr.html
Http://www.cnblogs.com/abob/archive/2009/07/09/1520021.html
Http://blog.csdn.net/lixiang0522/article/details/7608310
Http://www.xue5.com/Mobile/Android/690354.html
Http://blog.csdn.net/gf771115/article/details/7019033
Http://www.eoeandroid.com/forum.php? MoD = viewthread & tid = 159580 & page = 1 # pid1328603
Http://www.tuicool.com/articles/N3UnIrhttp://www.2cto.com/kf/201205/132327.htmlhttp://www.iossd.com/project/Android/71258.html
Http://blog.csdn.net/sharecode/article/details/7410403
Http://www.trinea.cn/android/android%E4%B8%8B%E8%BD%BD%E7% AE %A1%E7%90%86downloadmanager%E5%8A%9F%E8%83%BD%E5%A2%9E%E5%BC%BA%E5%92%8Cbug%E4%BF% AE %E6%94%B9/
Http://www.trinea.cn/android/android%E4%B8%8B%E8%BD%BD%E7% AE %A1%E7%90%86downloadmanager%E5%8A%9F%E8%83%BD%E5%A2%9E%E5%BC%BA%E5%92%8Cbug%E4%BF% AE %E6%94%B9/
This article is excellent.
Http://blog.lytsing.org/archives/135.html