Check the picture…I am actually trying to create a container whose height should be the whole height of the viewport without considering the top safe area and also subtracting the bottom tab bar/nav bar height.

in other words: the device screen height minus the navbar minus the thing bellow to the navbar (the black one very in the bottom of the screen , bellow to the grey nav bar that belongs to the OS where you can swipe up and invoke a feature accordin with the device version/model)

I made several attempts with no success…This is my last one…

void _calculateBottomPadding() {
WidgetsBinding.instance.addPostFrameCallback((_) {
  final viewInsets = MediaQuery.of(context).viewInsets.bottom;
  final viewPadding = MediaQuery.of(context).viewPadding.bottom;
  setState(() {
    _bottomPadding = viewInsets > 0 ? viewInsets : viewPadding;
  });
});
}



 Container(
    color: Colors.red,
    width: MediaQuery.of(context).size.width,
    height: (MediaQuery.of(context).size.height) -
        MediaQuery.of(context).padding.bottom -
        _bottomPadding -
        kBottomNavigationBarHeight,

Any help?