Android SDK Manager 报错：Connection to https://dl-ssl.google.com refused

Connection to https://dl-ssl.google.com refused.

OR

Failed to fectch URl https://dl-ssl.google.com/android/repository/addons_list.xml.
这儿找答案：https://code.google.com/p/android/issues/detail?id=21359

1. 打开host文件。

2. 添加： 74.125.237.1　　dl-ssl.google.com