android-sdk_r20.0.3-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 如下: 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. Each 06 # entry should be kept on an individual line. The IP address should 07 # 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 one 09 # space. 10 # 11 # Additionally, comments (such as these) may be inserted on individual 12 # lines or following the machine name denoted by a '#' symbol. 13 # 14 # For example: 15 # 16 # 102.54.94.97 rhino.acme.com # source server 17 # 38.25.63.10 x.acme.com # x client host 18 19 127.0.0.1 localhost 20 74.125.237.1 dl-ssl.google.com 问题得到解决。