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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| import 'dart:io'; | ||
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| import 'package:cached_network_image/cached_network_image.dart'; | ||
| import 'package:flustars/flustars.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_wanandroid/res/styles.dart'; | ||
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| class ImageSizePage extends StatefulWidget { | ||
| final String title; | ||
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| ImageSizePage(this.title); | ||
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| @override | ||
| State<StatefulWidget> createState() { | ||
| return new _ImageSizePageState(); | ||
| } | ||
| } | ||
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| class _ImageSizePageState extends State<ImageSizePage> { | ||
| String cacheImgInfo1 = "[CachedNetworkImage] loading..."; | ||
| String netImgInfo1 = "[网络图片1] loading..."; | ||
| String localImgInfo1 = "[本地图片 ali_connors] loading..."; | ||
| String netImgInfoE = "[网络图片E] loading..."; | ||
| String netUrl1 = | ||
| "https://upload-images.jianshu.io/upload_images/13222938-74a4dc4115d76790.png"; | ||
| String netUrl2 = | ||
| "https://upload-images.jianshu.io/upload_images/13222938-74a4dc4115d76790.png"; | ||
| String netUrlE = "https://xxx.png"; | ||
| String localImgUrl = "assets/images/3.0x/ali_connors.png"; | ||
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| @override | ||
| void initState() { | ||
| super.initState(); | ||
| _loadCachedNetworkImage(); | ||
| _loadNetUrl1(); | ||
| _loadLocalUrl1(); | ||
| _initAsync2(); | ||
| } | ||
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| void _loadCachedNetworkImage() async { | ||
| Image image = new Image(image: new CachedNetworkImageProvider(netUrl2)); | ||
| Rect rect = await WidgetUtil.getImageWH(image: image); | ||
| cacheImgInfo1 = | ||
| "[CachedNetworkImage] width: ${rect.width}, height: ${rect.height}"; | ||
| setState(() {}); | ||
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| // Image imageAsset = new Image.asset(""); | ||
| // Image imageFile = new Image.file(File("path")); | ||
| // Image imageNetwork = new Image.network("url"); | ||
| // Image imageMemory = new Image.memory(null); | ||
| } | ||
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| void _loadNetUrl1() async { | ||
| Rect rect = await WidgetUtil.getImageWH(url: netUrl1); | ||
| netImgInfo1 = "[网络图片1] width: ${rect.width}, height: ${rect.height}"; | ||
| setState(() {}); | ||
| } | ||
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| void _loadLocalUrl1() async { | ||
| Rect locImg1 = await WidgetUtil.getImageWH(localUrl: localImgUrl); | ||
| localImgInfo1 = | ||
| "[本地图片 ali_connors] width: ${locImg1.width}, height: ${locImg1.height}"; | ||
| setState(() {}); | ||
| } | ||
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| void _initAsync2() { | ||
| WidgetUtil.getImageWHE(url: netUrlE).then((Rect rect) { | ||
| netImgInfoE = "[网络图片2] width: ${rect.width}, height: ${rect.height}"; | ||
| setState(() {}); | ||
| }).catchError((error) { | ||
| netImgInfoE = "[网络图片2] error" + error.toString(); | ||
| setState(() {}); | ||
| }); | ||
| } | ||
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| Widget _buildItem(String info, {double height = 50}) { | ||
| return new Container( | ||
| alignment: Alignment.center, | ||
| height: height, | ||
| child: new Text( | ||
| "$info", | ||
| style: TextStyles.listContent, | ||
| ), | ||
| decoration: Decorations.bottom, | ||
| ); | ||
| } | ||
|
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| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| appBar: new AppBar( | ||
| title: new Text(widget.title), | ||
| centerTitle: true, | ||
| ), | ||
| body: new ListView( | ||
| children: <Widget>[ | ||
| _buildItem(cacheImgInfo1), | ||
| _buildItem(netImgInfo1), | ||
| _buildItem(localImgInfo1), | ||
| _buildItem(netImgInfoE, height: 100), | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
|
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| @override | ||
| void dispose() { | ||
| super.dispose(); | ||
| } | ||
| } |
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