Ways to troubleshoot download and update failures for Android SDK

Because I'm learning Android recently. Encounter this problem. Found unable to get various APIs and SDKs. I do not know whether it is because of my people in Xinjiang problem (business trip). So I was confronted with this problem.

This problem is well solved by opening tools-->options-->force https://...sources to be fetched using http://. Just tick this option on. This problem has been solved. But you'll find that it's empty and you can't see it, and if you've had a version before, you won't see the latest version but will still tell you done loading packages. The problem is actually not being successfully found on the Internet. Maybe it's a wall. (in Xinjiang, more like the wall.) ) or for whatever reason. I checked the Internet. There are several solutions.

1. Some say that www.google.com use this contemporary reason. But this is a long time ago, I also experimented with the result is a failure!

2. Another is by modifying the hosts. C:\Windows\System32\drivers\etc in this directory at the end of the add this sentence

74.125.237.1 dl-ssl.google.com
The result is still a failure. There is also a statement that adds two sentences:

203.208.46.146 dl.google.com

203.208.46.146 dl-ssl.google.com

Actually adding two sentences is correct. In this place I want to explain why the two sentences. Because

The contents of this inside are downloaded from the top two places respectively. And why before someone used 74.125.237.1 can, now do not. The internet says they will change. To prevent future changes, I'll record a method here to find the available IPs.

Such as

Leave only one last overseas option tick. Enter the dl-ssl.google.com and query. There are a lot of IP and then go to ping to find can ping through the can.

But I have to change the still can not update. Then I download a proxy for the agent with the website. Use the FQ software to open it. Fill in the appropriate content

Then you can update it.

PS: I hope to have a master or just learn the novice can work with me to guide the study. A man is a good troublemaker.

Ways to troubleshoot download and update failures for Android SDK