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参考:https://pub.dartlang.org/packages/cached_network_image#-installing-tab-
1、在pubspec.yaml file中添加:
dependencies:
cached_network_image: ^0.7.0
2、安装
flutter packages get
3、引入头文件
import 'package:cached_network_image/cached_network_image.dart';
4、使用
new CachedNetworkImage(
imageUrl: "http://via.placeholder.com/350x150",
placeholder: (context, url) => new CircularProgressIndicator(),
errorWidget: (context, url, error) => new Icon(Icons.error),
),