Flutter CachedNetworkImage圆角

class CircularCachedNetworkImage extends StatelessWidget {
    
  CircularCachedNetworkImage(this.url,
      {
    this.width,
      this.height,
      this.radius,
      this.fit,
      this.imageSize,
      });
  String url;
  final double width;
  final double height;
  final BoxFit fit;
  final double radius;
  final double imageSize;

  @override
  Widget build(BuildContext context) {
    
    // String urlStr = StringUtil.supportCdnUrl(url: url,width: width) ??'';
    return ClipRRect(
        borderRadius: BorderRadius.circular(radius??4),
        child: CachedNetworkImage(
          imageUrl: url??'',
          imageBuilder: (context, imageProvider) => Container(
            height: height,
            width: width,
            decoration: BoxDecoration(
              image: DecorationImage(
                image: imageProvider,
                fit: fit??BoxFit.cover,
              ),
            ),
          ),
          placeholder: (context, url) => Container(
             height: height,
             width: width,
            color:Global.kTheme.bg1,
            child: Center(
                child:  loadImage("bk-logo2",width: imageSize??43,color: Global.kTheme.bg3),
            ),),
          errorWidget: (context, url, error) => Container(
            height: height,
            width: width,
            color:Global.kTheme.bg1,
            child: Center(
              child:  loadImage("bk-logo2",width:imageSize??43,color: Global.kTheme.bg3),
            ),),
        ));
  }
}