How to prevent coming up floating action button (FAB) when clicking a search box in Flutter?

Question

How can I prevent a FAB (floating action button) from coming up when I'm clicking on a text field as shown in the following image? (source code link is available in first comment)

Answer 1

The Scaffold has a property to avoid the widgets in it to resize on keyboard pop-up. That would look something like this:

Scaffold(
    resizeToAvoidBottomPadding: false,
    body: body,
    appBar: appBar,
);