I've already installed the SDK and now I need the Eclipse plugin. However, it won't work. It gets to about 25-29% and hangs for a few minutes, then fails and I get this error message:
Start Eclipse, then select Help > Install New Software.
Click Add, in the top-right corner.
In the Add Repository dialog, click Archive.
Select the downloaded ADT-20.0.3.zip file and click OK.
Enter "ADT Plugin" for the name and click OK.
In the Available Software dialog, select the checkbox next to Developer Tools and click Next.
In the next window, you'll see a list of the tools to be downloaded. Click Next.
Read and accept the license agreements, then click Finish.
If you get a security warning saying that the authenticity or validity of the software can't be established, click OK. When the installation completes, restart Eclipse.