how to set showModalBottomSheet to full height

Question

i use showRoundedModalBottomSheet, how to adjust this modal height till below the appbar?

Answer 1

What worked for me was returning the modal's content wrapped in a DraggableScrollableSheet:

showModalBottomSheet(
  backgroundColor: Colors.transparent,
  context: context,
  isScrollControlled: true,
  isDismissible: true,
  builder: (BuildContext context) {
    return DraggableScrollableSheet(
      initialChildSize: 0.75, //set this as you want
      maxChildSize: 0.75, //set this as you want
      minChildSize: 0.75, //set this as you want
      expand: true,
      builder: (context, scrollController) {
        return Container(...); //whatever you're returning, does not have to be a Container
      }
    );
  }
)

Answer 2

I guess the easiest way is:

showModalBottomSheet(
      isScrollControlled: true,
      context: context,
      builder: (context) => Wrap(children: [YourSheetWidget()]),
    );

Answer 3

If you call showModalBottomSheet() with isScrollControlled: true, then the dialog will be allowed to occupy the whole height.

To adjust the height to the content, you can proceed as usually, for example, using Container and Wrap widgets.

Example:

final items = <Widget>[
  ListTile(
    leading: Icon(Icons.photo_camera),
    title: Text('Camera'),
    onTap: () {},
  ),
  ListTile(
    leading: Icon(Icons.photo_library),
    title: Text('Select'),
    onTap: () {},
  ),
  ListTile(
    leading: Icon(Icons.delete),
    title: Text('Delete'),
    onTap: () {},
  ),
  Divider(),
  if (true)
    ListTile(
      title: Text('Cancel'),
      onTap: () {},
    ),
];

showModalBottomSheet(
  context: context,
  builder: (BuildContext _) {
    return Container(
      child: Wrap(
        children: items,
      ),
    );
  },
  isScrollControlled: true,
);

Answer 4

[Update]

In showModalBottomSheet(...) set the property isScrollControlled:true.

It will make bottomSheet to full height.

---

[Original answer]

You can Implement the FullScreenDialog instead.

Flutter Gallery app has an example of FullScreenDialog

You can open your Dialog using below code:

Navigator.of(context).push(new MaterialPageRoute<Null>(
      builder: (BuildContext context) {
        return Dialog();
      },
    fullscreenDialog: true
  ));

Check this blog post too for more:

Hope it will help you.

Answer 5

1. You open class BottomSheet in library of flutter and change maxHeight

from

BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
return BoxConstraints(
  minWidth: constraints.maxWidth,
  maxWidth: constraints.maxWidth,
  minHeight: 0.0,
  maxHeight: constraints.maxHeight * 9.0 / 16.0
);}

to

BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
return BoxConstraints(
  minWidth: constraints.maxWidth,
  maxWidth: constraints.maxWidth,
  minHeight: 0.0,
  maxHeight: constraints.maxHeight
);}

2. You can create a new class with other name and copy source code from class BottomSheet and change maxHeight