Trouble installing Android 4.2 APIs

Question

I updated ADT through Eclipse today to version 21. Now when I open the SDK Manager I would expect there to be a folder like \"Android 4.2 (API 17)\", which would contain the SDK

Answer 1

By this step~

1) Eclipse > Window > Android SDK Manager > Packages > Reload

2) then install the sdk

ref: http://my.eoe.cn/iceskysl/archive/1027.html