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