folder failed to be renamed or moved on SDK installT
来时出现没有办法修改文件目录的问题，可以用下面办法，就是把解压出来的文件覆盖原来的tools下面的文件，再重新安装就可以了。
he following is my solution:
1. Find the "temp" folder and you can find the "tools_r05-windows.zip" or other
files which you will update.
2.unzip it.
3.here you will find the "tools_r05-windows" and copy all the files in the file.
which should be updated file.
4.copy to the "tools" folder.
5.OK.
In a word, the solution is our manual update the files.
按照网上大多数的教程安装了jre，eclipse plugin，android sdk，却发现eclipse中的android sdk and avd manager中始终建不了virual devices。
提示：An Android Virtual Device that failed to load 。。。。
原因是没有安装成功android sdk 。找不到Target 。
哎，谁曾想到android 2.0 必须装 JDK 而不是JRE。。
之后重新安装android sdk，总算出现了很多可以下载的包。。。
