截图:

Using BoxShadow (more customizations): Container( width: 100, height: 100, decoration: BoxDecoration( color: Colors.teal, borderRadius: BorderRadius.circular(20), boxShadow: [ BoxShadow( color: Colors.red, blurRadius: 4, offset: Offset(4, 8), // Shadow position ), ], ), ) Using PhysicalModel: PhysicalModel( color: Colors.teal, elevation: 8, shadowColor: Colors.red, borderRadius: BorderRadius.circular(20), child: SizedBox.square(dimension: 100), ) Using Card: Card( elevation: 8, shadowColor: Colors.red, child: Container( width: 100, height: 100, color: Colors.teal, ), ) Using Material: Material( elevation: 8, color: Colors.teal, shadowColor: Colors.red, borderRadius: BorderRadius.circular(20), child: SizedBox.square(dimension: 100), )

我就是这么做的

    Container(
  decoration: new BoxDecoration(
    boxShadow: [
      BoxShadow(
        color: Colors.grey[200],
        blurRadius: 2.0, // has the effect of softening the shadow
        spreadRadius: 2.0, // has the effect of extending the shadow
        offset: Offset(
          5.0, // horizontal, move right 10
          5.0, // vertical, move down 10
        ),
      )
    ],
  ),
  child: Container( 
       color: Colors.white, //in your example it's blue, pink etc..
       child: //your content
  )

The given answers do the trick for outer shadow i.e. around the widget. I wanted a shadow on the widget which is inside the boundaries and according to the github issue there is no inset attribute in ShadowBox yet. My workaround was to add a layer of widget with a gradient using the stack widget so that it looks like the widget itself has the shadows. You must use the mediaQuery for dimensions otherwise the layout will be messed up on different devices. Here's a sample of code for better understanding:

Stack(
            children: <Widget>[
              Container(
                decoration: BoxDecoration(
                  image: DecorationImage(
                    fit: BoxFit.cover,
                    image: AssetImage("assets/sampleFaces/makeup.jpeg"),
                    // fit: BoxFit.cover,
                  ),
                ),
                height: 350.0,
              ),
              Container(
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    begin: FractionalOffset.topCenter,
                    end: FractionalOffset.bottomCenter,
                    colors: [
                      Colors.black.withOpacity(0.0),
                      Colors.black54,
                    ],
                    stops: [0.95, 5.0],
                  ),
                ),
              )
            ],
          ),

在开始使用这些答案之前，请查看Material Card小部件。它还允许你直接通过应用主题定义全局样式:

class ShadowContainer extends StatelessWidget {
  ShadowContainer({
    Key key,
    this.margin = const EdgeInsets.fromLTRB(0, 10, 0, 8),
    this.padding = const EdgeInsets.symmetric(horizontal: 8),
    this.circular = 4,
    this.shadowColor = const Color.fromARGB(
        128, 158, 158, 158), //Colors.grey.withOpacity(0.5),
    this.backgroundColor = Colors.white,
    this.spreadRadius = 1,
    this.blurRadius = 3,
    this.offset = const Offset(0, 1),
    @required this.child,
  }) : super(key: key);

  final Widget child;
  final EdgeInsetsGeometry margin;
  final EdgeInsetsGeometry padding;
  final double circular;
  final Color shadowColor;
  final double spreadRadius;
  final double blurRadius;
  final Offset offset;
  final Color backgroundColor;

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: margin,
      padding: padding,
      decoration: BoxDecoration(
        color: backgroundColor,
        borderRadius: BorderRadius.circular(circular),
        boxShadow: [
          BoxShadow(
            color: shadowColor,
            spreadRadius: spreadRadius,
            blurRadius: blurRadius,
            offset: offset,
          ),
        ],
      ),
      child: child,
    );
  }
}

截图:

Using BoxShadow (more customizations): Container( width: 100, height: 100, decoration: BoxDecoration( color: Colors.teal, borderRadius: BorderRadius.circular(20), boxShadow: [ BoxShadow( color: Colors.red, blurRadius: 4, offset: Offset(4, 8), // Shadow position ), ], ), ) Using PhysicalModel: PhysicalModel( color: Colors.teal, elevation: 8, shadowColor: Colors.red, borderRadius: BorderRadius.circular(20), child: SizedBox.square(dimension: 100), ) Using Card: Card( elevation: 8, shadowColor: Colors.red, child: Container( width: 100, height: 100, color: Colors.teal, ), ) Using Material: Material( elevation: 8, color: Colors.teal, shadowColor: Colors.red, borderRadius: BorderRadius.circular(20), child: SizedBox.square(dimension: 100), )