Android – Can’t Install ADT. org.eclipse.wst.xml.ui is missing

Did you go through this Installing the ADT Plugin?

1. Start Eclipse, then select Help > Install New Software.

2. In the Available Software dialog, click Add....1.

3. In the Add Site dialog that appears, enter a name for the remote site (for example, "Android Plugin") in the "Name" field.2.

4. In the "Location" field, enter this URL: https://dl-ssl.google.com/android/eclipse/

5. Note: If you have trouble acquiring the plugin, you can try using "http" in the URL, instead of "https" (https is preferred for security reasons).4.

6. Click OK.

7. Back in the Available Software view, you should now see "Developer Tools" added to the list.6.

8. Select the checkbox next to Developer Tools, which will automatically select the nested tools Android DDMS and Android Development Tools.7.

9. Click Next.8.

10. In the resulting Install Details dialog, the Android DDMS and Android Development Tools features are listed.9.

11. Click Next to read and accept the license agreement and install any dependencies, then click Finish. Restart Eclipse.10.

This problem is caused because you have some plugins missing that are required by android tools. You can fix this by either installing a version of Eclipse which comes bundled with a lot of the eclipse plugins, or by tracking down the plugins yourself.

To do this, run eclipse, and go to Help->Install New software. Attempt to install the Android SDk, and you will be informed of what is missing, e.g:

*Missing requirement: Android Development Tools 0.9.6.v201002051504-24846 (com.android.ide.eclipse.adt.feature.group 0.9.6.v201002051504-24846) requires *'org.eclipse.gef 0.0.0' but it could not be found

So we need to install org.eclipse.gef . A quick Google for org.eclipse.gef, gives us www.eclipse.org/gef Follow the link, and on the left hand side you will see a link for "Update Manger", follow that link...

You then have a list of URI's similar to the one for the Android plugin. Copy the one ending in "releases"( http://download.eclipse.org/tools/gef/updates/releases/ if you can't be bothered ), and go back to eclipse. Paste this URI into the "Work with" box, as you did with the Android plugin, and install the components that come up.

Continue to do this until all of the Android dependencies are met, and the Android plugin will install. You will need to locate the correct locations for each of the required dependencies.

I've just encountered exactly the same problem in Eclipse 3.6 (Helios). After plenty of Googling I came across this link:

http://code.google.com/intl/es/eclipse/docs/faq.html#wstinstallerror

During installation, there's an error about requiring org.eclipse.wst.sse.ui. How do I fix that?

The Google Plugin for Eclipse depends on other specific Eclipse components, such as WST. Your installation of Eclipse may not yet include all of them, but they can be easily installed by following these instructions. Eclipse 3.6 (Helios)

1. Select Help > Install New Software...
2. Click the link for Available Software Sites.
3. Ensure there is an update site named Helios. If this is not present, click Add... and enter http://download.eclipse.org/releases/helios for the Location.
4. Now go through the installation steps; Eclipse should download and install the plugin's dependencies.

(There are examples in that page for 3.5 (Galileo), 3.4 (Ganymede) & 3.3 (Europa) for anyone with different versions)

The exact same steps work for 3.7 (Indigo) as well.

Just use http://download.eclipse.org/releases/indigo for the location.

Juno: http://download.eclipse.org/releases/juno

Kepler: http://download.eclipse.org/releases/kepler

Note: Step four is not necessary. Only steps one to three are necessary.