import 'package:flutter/material.dart'; class UserImage extends StatelessWidget { String url; UserImage({Key key, @required this.url}) : super(key: key); @override Widget build(BuildContext context) { return SizedBox( height: 48, width: 48, child: CircleAvatar( //backgroundColor: Colors.transparent, child: Image.network(url??''), //backgroundImage: NetworkImage(url), )); } }