android-sdk_r20.-windows无法正常更新
在www.android.com下载最新版的android-sdk_r20.0.3-windows之后，点击SDK Manager.exe，发现无法显示Updates/New的内容，因此无法进行更新。
菜单Tools-->options中的Force https://...sources to be fetched using http://...勾选上之后，问题依旧。?
最终解决方案：
在C:\WINDOWS\system32\drivers\etc目录下，找到hosts文件，在文件末尾加上
74.125.237.1 dl-ssl.google.com
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如下：
view sourceprint?01# Copyright (c) 1993-1999 Microsoft Corp.02#03# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.04#05# This file contains the mappings of IP addresses to host names. Each06# entry should be kept on an individual line. The IP address should07# be placed in the first column followed by the corresponding host name.08# The IP address and the host name should be separated by at least one09# space.10#11# Additionally, comments (such as these) may be inserted on individual12# lines or following the machine name denoted by a '#' symbol.13#14# For example:15#16#????? 102.54.94.97???? rhino.acme.com????????? # source server17#?????? 38.25.63.10???? x.acme.com????????????? # x client host18?19127.0.0.1?????? localhost2074.125.237.1 dl-ssl.google.com?
问题得到解决。