Problem installing ADT in Eclipse

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开发者_如何学运维 I get this error message:

An error occurred while collecting items to be installed session context was:(profile=SDKProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=). Unable to read repository at http://dl-ssl.google.com/android/eclipse/plugins/com.android.ide.eclipse.adt_12.0.0.v201106281929-138431.jar. Read timed out

I'm using Windows Vista and running Eclipse under administrative privileges.

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I've solved this applying the fix that frogman suggests here: https://stackoverflow.com/a/10103295/106342

I reproduce it here:

Uncheck “Contact all update sites during install to find required software”

The checkbox mentioned there is in the dialog that shows up when you hit "Install new software".

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I meet this problem too. What I have done was downloaded the offline package, here: http://developer.android.com/sdk/eclipse-adt.html#troubleshooting . Hope I helped :)

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Download the ADT Plugin zip file

ADT Plugin Zip File

• 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.

Page link fore study

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I was having a similar problem. Tried the answer above, and still getting this:

An error occurred while installing the items session context was:(profile=SDKProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Install, operand=null --> [R]com.android.ide.eclipse.adt 20.0.3.v201208082019-427395, action=). Failed to prepare partial IU: [R]com.android.ide.eclipse.adt 20.0.3.v201208082019-427395.

I'm running Win 7 Premium on a Dell Laptop 64bit