Alert Dialog with Rounded corners in flutter

Question

I am trying to create an alert dialog with rounded corners in Flutter same as below screenshot. also add my code here, but my output is exactly different from the expected o

Answer 1

add

showDialog(
        context: context,
        builder: (BuildContext context) {
          return AlertDialog(
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(10.0))),
            title: Text("Loading..."),
            content: CircularProgressIndicator(),
          );
        },
      );