Trigger Hardware Keyboard Minimize Button

Ionic Framework ionic-v3
1

Hi,
I am trying to have a function which is being triggered when the keyboard-minimize button is triggered in Android
(

Screenshot_20180709-105023
Screenshot_20180709-105023.png1079×933 41.8 KB
).

I already tried registerBackButtonAction but it is also triggered when this button is shown:

Screenshot_20180709-105016
Screenshot_20180709-105016.png1079×183 2.31 KB
.

So if there is a good solution (it doesn´t even have to be good, it just should be working), pls let me know.

Greetings