import 'dart:math'; import 'package:flutter/cupertino.dart'; import 'package:flutter/material.dart'; import 'package:cached_network_image/cached_network_image.dart'; enum ImageType { normal, // random, //随机 assets, //资源目录 } @Deprecated("cached_image_wrapper need to be cleaned.") class CachedImageWrapper extends StatelessWidget { final String url; final double width; final double height; final BoxFit fit; final ImageType imageType; final bool isSigned; CachedImageWrapper( {@required this.url, @required this.width, @required this.height, this.isSigned = true, this.imageType: ImageType.normal, this.fit: BoxFit.cover}); @override Widget build(BuildContext context) { return imageType == ImageType.normal ? CachedNetworkImage( key: Key(url), imageBuilder: (context, imageProvider) { return Container( width: width, height: height, decoration: BoxDecoration( color: isSigned ? Colors.transparent : Colors.grey.withOpacity(0.6), image: isSigned ? DecorationImage( image: imageProvider, fit: BoxFit.cover, scale: 1) : null, ), ); }, imageUrl: imageUrl, placeholder: (_, __) => SizedBox( width: width, height: height, child: CupertinoActivityIndicator(radius: min(10.0, width / 3))), errorWidget: (_, __, ___) => SizedBox( width: width, height: height, child: Icon( Icons.error_outline, ), ), ) : SizedBox( width: width, height: height, child: Image.asset(imageUrl), ); } String get imageUrl { switch (imageType) { // case ImageType.random: // return ImageHelper.randomUrl( // key: url, width: width.toInt(), height: height.toInt()); case ImageType.assets: return "assets/images/" + url; case ImageType.normal: return url; } return url; } }