Pfthb

I want to do an app that looks like this with that slice on the corner. I can make that slide but my app doesn't have that shadow.

I have my front layer wraped inside a material wideget with elevation like in the example MDC-104.

Here is my code to make that cut

import 'package:flutter/material.dart';

class ShapeLayer extends StatelessWidget 
 final Widget frontLayer;
 final Widget backLayer = Container(
 color: Colors.green,
 );

 ShapeLayer(Key key, this.frontLayer) : super(key: key);

 @override
 Widget build(BuildContext context) 
 return Stack(
 children: <Widget>[
 backLayer,
 Material(
 elevation: 60.0,
 shape: BeveledRectangleBorder(
 borderRadius: BorderRadius.only(topLeft: Radius.circular(46.0)),
 ),
 child: Column(
 crossAxisAlignment: CrossAxisAlignment.stretch,
 children: <Widget>[
 Expanded(child: frontLayer),
 ],
 ),
 ),
 ],
 );
 

I use it like this:

return Scaffold(
 appBar: appBar,
 body: ShapeLayer(frontLayer: Container(//Some stuff here)

And it looks like this:

As you can see it looks flat, with no elevation at all.

How can I fix this?

Thanks!

EDIT: as @SnakeyHips suggests, this is my app with elevation 16.0

Change your elevation from 60.0 to 16.0 should do it:

import 'package:flutter/material.dart';

class ShapeLayer extends StatelessWidget 
 final Widget frontLayer;
 final Widget backLayer = Container(
 color: Colors.green,
 );

 ShapeLayer(Key key, this.frontLayer) : super(key: key);

 @override
 Widget build(BuildContext context) 
 return Stack(
 children: <Widget>[
 backLayer,
 Material(
 elevation: 16.0,
 shape: BeveledRectangleBorder(
 borderRadius: BorderRadius.only(topLeft: Radius.circular(46.0)),
 ),
 child: Column(
 crossAxisAlignment: CrossAxisAlignment.stretch,
 children: <Widget>[
 Expanded(child: frontLayer),
 ],
 ),
 ),
 ],
 );