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Eclipse dependency error while installing ADT

I am trying to install ADT plugin in Eclipse Galileo 3.5.2 on my ubuntu 10.04. But I am getting the dependency error. Please help me to fix the error.
This is the error detail which I am getting.
Cannot complete the install because of a conflicting dependency.
Software being installed: Android Development Tools 21.1.0.v201302060044-569685 (com.android.ide.eclipse.adt.feature.group 21.1.0.v201302060044-569685)
Software currently installed: Eclipse Platform 3.5.2 (Eclipse Platform 3.5.2)
Only one of the following can be installed at once:
Core Runtime 3.7.0.v20110110 (org.eclipse.core.runtime 3.7.0.v20110110)
Core Runtime 3.5.0.v20090525 (org.eclipse.core.runtime 3.5.0.v20090525)
Cannot satisfy dependency:
From: Eclipse Platform 3.5.2 (Eclipse Platform 3.5.2)
To: org.eclipse.core.runtime [3.5.0.v20090525]
Cannot satisfy dependency:
From: Android Development Tools 21.1.0.v201302060044-569685 (com.android.ide.eclipse.adt.feature.group 21.1.0.v201302060044-569685)
To: org.eclipse.core.runtime 3.6.0

The ADT Plug-in page states
Eclipse Helios (Version 3.6.2) or higher is required for ADT 21.1.0.
The output you posted shows you are using ADT 21.1.0, so, it seems like it might be time to update eclipse :)

Do not bother anymore with eclipse 3.x
Download the latest Eclipse (Juno - 4.2) : http://www.eclipse.org/downloads/
OR event better if you do only android development, download the android developer package which has its built-in eclipse version with ADT pre-installed : http://developer.android.com/sdk/index.html

You can also download org.eclipse.core.runtime-3.7.0.v20110110.jar in:http://www.java2s.com/Code/Jar/o/Downloadorgeclipsecoreruntime370v20110110jar.htm

error while installing adt in eclipse

I am installing adt plugin in eclips galileo.but getting below error-
Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 20.0.3.v201208082019-427395 (com.android.ide.eclipse.adt.feature.group 20.0.3.v201208082019-427395)
Missing requirement: Android Development Tools 20.0.3.v201208082019-427395 (com.android.ide.eclipse.adt.feature.group 20.0.3.v201208082019-427395) requires 'org.eclipse.core.runtime 3.6.0' but it could not be found

It seems to be saying that you don't have the Eclipse core runtime where it expects it to be.
An easy way to fix this would be to enable the 'Contact all update sites during install to find required software' checkbox on the Install New Software dialog page and that should automatically download all the additional software required for ADT to work.
Otherwise it would be a case of looking through the Eclipse official repository to find and install the runtime.
Edit:
Ah, the reason it can't find the 3.6 runtime is that Galileo is 3.5. The new ADT versions will only run on 3.6(Helios) and above.
ADT Plugin Requirements
Eclipse Helios (Version 3.6.2) or higher is required for ADT 20.0.3.
Install Helios or a higher version and it should work fine.
The latest version of Eclipse Classic is Juno, which you can download from here.

Noob help; setting up Android environment

Trying to install jdk-6u31-windows-i586 and eclipse-java-galileo-SR2-win32 and android-sdk_r17-windows
When trying to add the
Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 17.0.0.v201203161636-291853 (com.android.ide.eclipse.adt.feature.group 17.0.0.v201203161636-291853)
Missing requirement: Android Development Tools 17.0.0.v201203161636-291853 (com.android.ide.eclipse.adt.feature.group 17.0.0.v201203161636-291853) requires 'org.eclipse.ui 3.6.0' but it could not be found

From the ADT plugin site:
ADT 17 - Dependencies: [..] Eclipse Helios (Version 3.6.2) or higher is required for ADT 17.0.0.
Eclipse Galileo is too old and not supported. Pick a newer version (Indigo, which is the newest, works fine for me).

Eclipse 3.6 is Helios, whereas Eclipse 3.5 is Galileo; it would appear that the version of ADT you're installing needs 3.6 or later. 3.7 is stable now.

Trouble installing archive ADT 1.7.0 Eclipse Plugin on Eclipse Classic 3.7.2 and Windows 7-64Bit

I'm having difficulty in installing ADT 1.7.0 Eclipse Plugin with this conditions :
Eclipse version is Eclipse Classic 3.7.2 from www.eclipse.org
Windows 7 Professional 64 Bit SP1
ADT install method is using archive as described in http://developer.android.com/sdk/eclipse-adt.html#installing
Java Runtime Environment 6 update 31.
the installation progress stop with detail :
"Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 17.0.0.v201203161636-291853 (com.android.ide.eclipse.adt.feature.group 17.0.0.v201203161636-291853)
Missing requirement: Android Development Tools 17.0.0.v201203161636-291853 (com.android.ide.eclipse.adt.feature.group 17.0.0.v201203161636-291853) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found"
Are there any solution to this ?

What helped in my case was installing Eclipse Indigo for Java EE Developers. Apparently, the classic version doesn't have everything that is required by ADT.
I also ran Eclipse as administrator but I'm not sure if it was required.

I had the same problem and finally solved it. I had to install Eclipse Indigo for Java EE Developers, and then I had to turn of my AVG 2012 for some time while the install was running.
This solved my problem.

How to solve ADT dependencies on Eclipse Classic Indigo 3.7.1?

I want to install Android SDK on Eclipse Classic Indigo (Version: 3.7.1 Build id: M20110909-1335) Windows 7 32 bit.
On adding ADT plugin to in software update I got following some dependency error.
Cannot complete the install because one or more required items could
not be found. Software being installed: Android Development Tools
16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534)
I consulted some blogs and found that I have to update my Eclipse. Following two sources are there in Eclipse.
http://download.eclipse.org/eclipse/updates/3.7
http://download.eclipse.org/releases/indigo
But their download is also broken. They try to dowload content.jar file which is not there.
Any hand how to solve this problem? Or I should use some other version of Eclipse?
Thanks

I was running a proxy program (UltraSurf). I closed the application and re-tried and that solves my installation problem.