问题
There is no android support package in my SDK manager, as shown:

And whenever I try to create an android application project I am presented with this screen at the end:

If I click install/upgrade this appears:

And it installs and everything, but nothing happens and it stays on the same screen as before. Clicking check again
doesn't do anything either.
How can I get this to work?
回答1:
For some weird reason android-sdk decided to install everything in /extras/compatibility
instead of /extras/support
which eclipse recognises, so I renamed /extras/compatibility
to
/extras/support
and now everything works fine.
回答2:
Find your SDK directory, navigate to /extras/android/, in this folder you will see a folder named "compatibility", rename this folder to "support". Re-open Eclipse, create new Android Application Project, the process will complete without this problem occurring again!
来源:https://stackoverflow.com/questions/11244091/android-support-package-not-present-in-sdk-manager