问题
Using Android Studio 3.0 / SDK Manager
In trying to set up BILLING, tutorials show installing it through Extras in SDK Manager.
I don't have an Extras folder in SDK manager and can't find any reason why, how to get it, what's wrong, or what to do.
Help. please?
UPDATE: Here's what my SDK Manager looks like:
UPDATE: Here's my SDK Manager Updates Tab
回答1:
You're using an outdated tutorial.
If you're doing native Android development, you should be using the Play Billing Library, which does not require installing anything via the SDK Manager.
If you really need to install the Billing Library directly, you can find it in the SDK Tools tab of the SDK Manager:
回答2:
Correct answer is: don't need Android Studio for Cordova.
来源：https://stackoverflow.com/questions/47128673/android-studo-3-0-sdk-manager-cant-find-extras