Yesterday I tried to install titanium appcelerator and in the process I edited some of the android sdk installations Now I have updated my android sdk to rev 20. But when i start eclipse i get an error that sdk requires version 20.0.0 or above. I tried to install by using eclipse->help->check for updates-> but again the installation doesn't work claiming that required items could not be found. Please help
Better to Download Latest Eclipse Setup Juno http://www.eclipse.org/downloads/ open this link and download this version Eclipse IDE for Java EE Developers
Goto Help → Install New Software.
In there you click the work with: dropdown and select your android adt link.
Then it will show the list of things to install choose it click next.
I also got the same error and I solved it from updating adt.
Go to : Eclipse → Help → Install New Software
and click the work with drop down and select android adt link that you have used previously. It looks like this :
android ADT - https://dl-ssl.google.com/android/eclipse/.
Tick the developers tools check box and click next. If you have already installed some of them, then eclipse will notify you.
What I did was to uninstall the latest ADT and go back to a previous ADT. It worked.
Go to Help → Install New Software - look for the already installed hyperlink. Uninstall all ADT's. Restart Eclipse and it will tell you the ADT you need for the revision tools you have. Download this ADT and install it manually. It should at least work.
I got the same error, I solved this by updating the Android SDK tools and Android SDK platform tools.
From Eclipse → Window → Android SDK Manager, then Update Tools → Android SDK Tools
and Android SDK platform tools packages. After this restart the eclipse and then update the ADT again. (Help → Check for new Updates).
This is the best and quick solution:
Open SDK manager -> Packages menu -> Reload
if You have to update ADT 20.0 otherwise it's not work and also not list the Number of SDK install. i have that problem and fix by updating ADT 20.0 , also Good User Interface.
I suspected that something was wrong with my configuration, as I shouldn't have to suddenly update the ADT when everything had been previously working.
BTW, I got this with "Android ADT version required 21.0.0 and above".
To fix it, I:
- Reinstalled eclipse (which is quite easy, as the zip was still in my Downloads, so I just deleted my eclipse directory and unzip the original again - eclipse doesn't use the registry)
- Created a "hello_world" java app, in eclipse, to test that (fixing any problems with the standard searches");
- Created a "hello_world" Android app to test that (fixing any problems with the standard searches).
- Reverted my project files to the last known working version,
- Imported my project, and fixed an problems, etc...
About an hour's work. No downloads (assuming you've still got your eclipse zip), no update to the ADT, and no obscure problems which I haven't faced before.
This person (http://kcwebprogrammers.blogspot.com.au/2012/07/android-sdk-eclipse-hell.html) recommends a complete re-install, but it seems that a partial restoration may work.
I too had the same problem. I resolved it by doing the following in Eclipse:
Go to Help -> Check for Updates -> Install all the Updates available. only check on Android Development Tools then press next and accept install it :)
Mohamed Safwat
Helwan Uni
eng.mohamedsafwat@yahoo.com
In Eclipse (ADT)
Help --> Install New Software ---> Work with --> Android Developer Tools Update Site - http://dl-ssl.google.com/android/eclipse/
Select all of the updates you want to install and UNCHECK option "Contact all update sites during install to find required software". After that everything should install as it is mentioned to be.
来源：https://stackoverflow.com/questions/11338521/android-adt-version-required-20-0-0-and-above