Chronic Android SDK installation error

It is truly puzzling that Google cannot fix a tiny bug that has bothered many developers for almost 3 years - the Android SDK installation process started within Eclipse cannot rename a folder so it cannot be installed.  The installation process blames other applications including anti-virus software holding the folder.  It is false. Eclipse appears to be the culprit that prevents the Android SDK Manager from renaming a folder because the installation process can go through after Eclipse is closed.  However, the installation with Eclipse closed does not work if Eclipse asks for newer versinof Android SDK because Eclipse still thinks it is using the older version of SDK after such installation.

One way to fix it quickly is:

Eclipse > Help > About Eclipse > Installlation details > Installed Software > Uninstall Android Development Tools.

Then

Eclipse > Help > Install new software... > Work with Android - http://adt-addons.googlecode.com/svn/trunk/source/com.android.ide.eclipse.source.update/ > Install Android SDK.

If Eclipse has already had the required newer version in place, one can just close Eclipse and run Android SDK Manager from the SDK folder to fix this problem.