问题
How can i get an offline version of Android SDK Version 19 (KitKat) documentation?
In API ver. 9 there is a package named "Documentation for Android SDK" that brings a local copy of API9 docs to <sdk>/docs
, but there are no any equivalent packages for API19.

回答1:
but there are no any equivalent packages for API19
Yes, there are:

You are missing most of the SDK packages, based on what's showing in your screenshot. I recommend that you go into Tools > Options in the main menu, and click the "Clear Cache" button. Then, do Packages > Reload in the main menu, to try to pick up what you are missing.
来源:https://stackoverflow.com/questions/21739872/android-sdk-api-19-kitkat-offline-documentation