Show keyboard programmatically on specific display in Android app for multiscreen device

Question

I have Android app in multiscreen device. In this code:

DisplayManager displayManager = (DisplayManager) getContext().getSystemService(Context.DISPLAY_SERVICE);
Display[] displays = displayManager.getDisplays();

displays array size is 2.

And my question is: how to show programmatically keyboard for specific display, for example, displays[1]?