How to create rounded rectangle box in flutter?

Question

I wanted to create a box with a rectangular body. And my code is given below. Here BoxShape is underlined and the error message says: Enums can't be instantiated. Try using one of the defined constants. How will I solve this? I wanted to create a container box with rounded edges in flutter.

home: Scaffold(
    appBar: AppBar(
      backgroundColor:Theme.of(context).primaryColor, 
      leading:Icon(Icons.arrow_back),
            ),
    body: Scaffold(backgroundColor:Color(0xBBCCE3F0) ,
            body:   Center(
              child: Container(
                decoration:new BoxDecoration(
                  shape:BoxShape(BorderRadius.circular(10.0))
                ),
        color:Colors.white,
        child:SizedBox(height:500.0,width:300,
        )

Answer 1

Use this as decoration.This will give radius to container.

          borderRadius: BorderRadius.circular(10),

Answer 2

You can achieve it like this:

  > Container(
    >                 decoration:new BoxDecoration(
    >                   border: Border.all( borderRadius: BorderRadius.circular(10), ),
    >                 ),
    >         color:Colors.white,
    >         child:SizedBox(height:500.0,width:300,
    >         )