White space appear above keyboard when click on editor to type something

[applehong5013]

This is the page of the editor look like as below:

So when I click on the editor and prepare to type something, there are the white space appear on the keyboard and sometime it will cover whole page as below:

Below are the references for ionic:

1. https://forum.ionicframework.com/t/white-space-above-keyboard-or-select-box-control-pic-inside/4580
2. https://github.com/ionic-team/ionic/issues/10728
3. https://github.com/nikoTM/ionic-keyboard-bug

How about for android? (Java) How to solve in android java?

[applehong5013]

I use full screen with match parent and everything is fine.