How do you adjust the height and borderRadius of a BottomSheet in Flutter?

Question

I'm probably missing something obvious here, but my BottomSheet only takes up the bottom half the screen, even though the widgets in it take up more space. So now there is scrolling behavior inside the BottomSheet. I'd like to be able to increase the BottomSheet so that the user doesn't have to scroll as much.

I also want to add a borderRadius to the top of my BottomSheet, so that it looks more "modal"-y or "tab"-like.

Code:

void _showBottomSheet(BuildContext context) {
    showModalBottomSheet<Null>(
      context: context,
      builder: (BuildContext context) {
        return _bottomSheetScreen; // defined earlier on
      },
    );
}

I've tried:

showModalBottomSheet<Null>(
  context: context,
  builder: (BuildContext context) {
    return Container(
      decoration: BoxDecoration(
        borderRadius: _borderRadius,
      ),
      height: 1000.0,
      child: _bottomSheetScreen,
    );
  },
);

but it seems like that only affects the contents inside the BottomSheet, and does not customize the BottomSheet itself.

Answer 1

Default height for bottomSheet is half the screenSize

If you want your bottomSheet to EXPAND according to your content DYNAMICALLY

use below code

showModalBottomSheet<dynamic>(
isScrollControlled: true,
context: context,
builder: (BuildContext bc) {
  return Wrap(
      children: <Widget>[...]
  )
 }
)

This will automatically expand the bottomSheet according to content inside.

For adding a radius on top of bottomSheet return below code to `bottomSheet'

Container(
  child: Container(
    decoration: new BoxDecoration(
      color: forDialog ? Color(0xFF737373) : Colors.white,
      borderRadius: new BorderRadius.only(
            topLeft: const Radius.circular(25.0),
            topRight: const Radius.circular(25.0))),
      child: yourWidget(),
   ),
)

Complete code meeting both requirements

showModalBottomSheet<dynamic>(
isScrollControlled: true,
context: context,
builder: (BuildContext bc) {
  return Wrap(
      children: <Widget>[
          Container(
                 child: Container(
                  decoration: new BoxDecoration(
                    color: forDialog ? Color(0xFF737373) : Colors.white,
                    borderRadius: new BorderRadius.only(
                          topLeft: const Radius.circular(25.0),
                          topRight: const Radius.circular(25.0))),
                    child: yourWidget(),
                 ),
              )
      ]
   )
 }
)