Fetching http://dl-ssl.google.com/android/repository/addons_list-1.xml
Failed to fetch URL http://dl-ssl.google.com/android/repository/addons_list-1.xml, reason: Connection to http://dl-ssl.google.com refused
Fetched Add-ons List successfully
Fetching URL: http://dl-ssl.google.com/android/repository/repository-6.xml
Failed to fetch URL http://dl-ssl.google.com/android/repository/repository-6.xml, reason: Connection to http://dl-ssl.google.com refused
Done loading packages.
折騰了幾天,有點懵了~~
不過剛剛終于柳暗花明:在http://stackoverflow.com/questions/2766713/android-download-the-android-sdk-components-for-offline-install上找到了適合這個問題的解法。

按照上述步驟,先在netstat命令來查看proxy地址,如下:

我的PC上顯示的proxy是上面綠色框內(nèi)的地址,再把這個地址填入到setting:

再重新Reload(Android SDK Manager菜單: Packages->Reload),終于成功了:

趁下載和升級的過程,簡單的總結(jié)一下這個步驟,希望能對遇到這個問題的網(wǎng)友有所幫助。:D