Failed to fetch URL in Eclipse

I have downloaded the Android SDK and installed the Android Development Tools in Eclipse.

Now when I try to add Third Party Add-ons in the Android SDK and AVD Manager I get this :

I have already set the path to the Android SDK, and tr开发者_如何学JAVAied to disable the firewall, and even I started SDK Manager from the command promopt. Nothing has corrected the problem yet.

What's this problem ?

Have you tried using http rather than https ?

I also have this problem, and I resolved. in the Eclipse click "help" -> "Check for Updates" The problem is solved after update Android SDK and AVD Manager separated into Android SDK Manager and AVD Manager Now

For ubuntu linux 12.04 sdk 7 I had to delete the .android FILE in my home directory, create a .android DIRECTORY create a .android/cache directory

then re run the tool, I was initially going to manually download the files into the cache directory as specified by the android sdk tool.

Go to your settings or options check the force https option and make sure that the http proxy server textbox is empty.