This is the webpage showing from where I downloaded the SDK:
On extracting the .zip folder, and opening the 'tools' folder, all I can see in an emulator.exe, mksdcard.exe and a host of .bat files (as shown below).
How do I proceed?
In IntelliJ IDEA 2017.1 and 2017.2 setting up Android SDK from scratch is complicated. I would recommended to install Android Studio and manage SDK platform there. This problem will be addressed in one of the nearest updates.
If you are brave enough, it's still possible to set it up without Android Studio using the tools\bin\sdkmanager.bat command line tool. GUI version of the SDK Manager is deprecated (no longer available in the SDK download). Standalone SDK can be downloaded here. Look below the Get just the command line tools section.
So, you will need to install at least one platform version.
First run the update to ensure you have the latest tools:
sdkmanager --update
Now you can list the packages available for installation:
sdkmanager --list
To install Android Platform:
sdkmanager platforms;android-26
To install the current build tools version (optional):
sdkmanager build-tools;26.0.0
At this point you should be able to add Android SDK configuration for the installed platform version in IntelliJ IDEA like this:
You will also have access to Android SDK configuration UI where you download additional components and perform updates (just like in Android Studio):
As Karan Sharma mentioned in this post.
To add an existing SDK, you should close your project if you have any open one.
Then from the Welcome page select Configure -> Project Defaults -> Project Structure
And then from the Default Project Structure window and from the left side, select SDKs and then the plus button from the toolbar, and from the menu select Android SDK
And then give the address to the location where your Android SDK files are in, and hit OK.
Thats it!
Now it should be working for you!
launch android executable and install the platforms and build-tools.
来源：https://stackoverflow.com/questions/45268254/how-do-i-install-the-standalone-android-sdk-and-then-add-it-to-intellij-idea-on