问题
I have a very annoying problem, when I try to open an imported project with my version of Eclipse, it tells me that I can't do it unless I download the version 21 of something. Then it opens my SDK Manager and when I want to install the new packages to update my version, it's just impossible even after having accepted the terms and conditions.
Here is a picture :
Any help is welcome! Thanks in advance.
回答1:
try First Clear your cache with Android SDK Manager--> Tools--> Option-->click on Clear cache after Refreshing the List by
Android SDK Manager --> Packages --> Reload
Hope it will Help
回答2:
In my case I had to set the proxy settings in Tools->Options.
Inside Internet explorer, Press Alt+t -> Select Internet Options -> connections tab -> Click Lan settings. You can see Proxy settings there.
来源：https://stackoverflow.com/questions/14999058/sdk-manager-wont-install-new-packages-install-button-remains-unclickable