文件名称:Download
介绍说明－－下载内容均来自于网络，请自行研究使用
实现在下载功能，提示进度条显示，启动系统自带的效果，读进度条和转轮的效果-To achieve the download function, suggesting that the progress bar shows, start the system comes with the effect of reading progress bar and the effect of wheel
(系统自动生成,下载前可以参看下载内容)
下载文件列表
Download
........\.classpath
........\.project
........\AndroidManifest.xml
........\assets
........\bin
........\...\classes.dex
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\main$1.class
........\...\...\..........\........\main$2.class
........\...\...\..........\........\main.class
........\...\...\..........\........\R$attr.class
........\...\...\..........\........\R$drawable.class
........\...\...\..........\........\R$id.class
........\...\...\..........\........\R$layout.class
........\...\...\..........\........\R$string.class
........\...\...\..........\........\R.class
........\...\Download.apk
........\...\resources.ap_
........\default.properties
........\gen
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\R.java
........\res
........\...\drawable-hdpi
........\...\.............\icon.png
........\...\drawable-ldpi
........\...\.............\icon.png
........\...\drawable-mdpi
........\...\.............\icon.png
........\...\layout
........\...\......\main.xml
........\...\values
........\...\......\strings.xml
........\src
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\main.java
........\.classpath
........\.project
........\AndroidManifest.xml
........\assets
........\bin
........\...\classes.dex
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\main$1.class
........\...\...\..........\........\main$2.class
........\...\...\..........\........\main.class
........\...\...\..........\........\R$attr.class
........\...\...\..........\........\R$drawable.class
........\...\...\..........\........\R$id.class
........\...\...\..........\........\R$layout.class
........\...\...\..........\........\R$string.class
........\...\...\..........\........\R.class
........\...\Download.apk
........\...\resources.ap_
........\default.properties
........\gen
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\R.java
........\res
........\...\drawable-hdpi
........\...\.............\icon.png
........\...\drawable-ldpi
........\...\.............\icon.png
........\...\drawable-mdpi
........\...\.............\icon.png
........\...\layout
........\...\......\main.xml
........\...\values
........\...\......\strings.xml
........\src
........\...\com
........\...\...\pocketdigi
........\...\...\..........\download
........\...\...\..........\........\main.java