Two questions when the keyboard pops up?

Hi, I have an ion-input tag and when i focus on the input,the keyboard pop up and the whole screen resize but the ion-input is covered,the another question is the tabs pops up,too.
it’s not a problem when i was used the ion-input in a login page,but if i want to make some page that put the ion-input on the bottom of the page.
it is really strange!
the normal state:

when i click the input field:

I just can’t find the input field until i scroll the screen.could anyone help me?
Thanks advanced!