How do I execute these Android Java commands in Unity3D?

Hi,

If I wanted to open the keyboard picker in Java, I’d use this…

InputMethodManager imeManager = (InputMethodManager) getApplicationContext().getSystemService(INPUT_METHOD_SERVICE);
imeManager.showInputMethodPicker();

… and I see that Unity has several things in its scripting toolbox that look like they could execute this directly. But I can’t figure out how to use them.

Any suggestions? This is for a kiosk and I’d like to execute the above command so the user can choose the keyboard they want to use.

Thank you,
-Chilton

You can write a plugin and call function from it

http://www.vortech.net/2013/03/accessing-the-android-activity-context-in-unity3d/

Thank you.
So the only way to do this is via the plugin API?