テキストウィジェットのフラッターでHTML文字列を表示する方法
Htmlタグ文字列をフラッターで表示する方法、プラグインを試してみましたが、動作しません。
new HtmlView(
data: html,
baseURL: "", // optional, type String
onLaunchFail: (url) { // optional, type Function
print("launch $url failed");
}
これは私のhtmlです
“Follow<a class='sup'><sup>pl</sup></a> what was sent down to you from your Lord, and do not follow other guardians apart from Him. Little do <span class='h'>you remind yourselves</span><a class='f'><sup f=2437>1</sup></a>.”
ユーザーflutter_html_view: "^ 0.5.10"このプラグイン
このプラグインには何の問題もありません。あなたのHTMLでサンプルを作成しただけで、問題なく動作します。以下のスニペットに置き換えて、それが機能するかどうかを確認してください。
dependencies:
flutter_html: ^0.8.2
hTMLをレンダリングするためのインポートとコード
import 'package:flutter_html/flutter_html.Dart';
import 'package:html/dom.Dart' as dom;
body: new Center(
child: SingleChildScrollView(
child: Html(
data: """
<div>Follow<a class='sup'><sup>pl</sup></a>
Below hr
<b>Bold</b>
<h1>what was sent down to you from your Lord</h1>,
and do not follow other guardians apart from Him. Little do
<span class='h'>you remind yourselves</span><a class='f'><sup f=2437>1</sup></a></div>
""",
padding: EdgeInsets.all(8.0),
onLinkTap: (url) {
print("Opening $url...");
},
customRender: (node, children) {
if (node is dom.Element) {
switch (node.localName) {
case "custom_tag": // using this, you can handle custom tags in your HTML
return Column(children: children);
}
}
},
),
),
)
ドキュメント で読み取るflutter_html_view
を使用しないでください。
サポートされているタグ
- p
- em
- b
- img
- ビデオ
- h1、
- h2、
- h3、
- h4、
- h5、
- h6
- 注意
このプラグインはhtmlタグの一部をフラッターウィジェットに変換しますこのプラグインは完全なhtmlコードのレンダリングをサポートしていません(フラッターでのWebレンダリングのサポートは組み込まれていません)
そのため、HTMLはレンダリングできないため、HTMLを適切にレンダリングしません。
しかし、flutter_html
のような他のプルギンを見つけることができます
https://github.com/Sub6Resources/flutter_html
掲載結果が向上するかどうか試してみてください。
[〜#〜] update [〜#〜]
pubspec.yaml
に追加しました
dependencies:
flutter_html: ^0.8.2
そして私のmain.Dart
は
import 'package:flutter/material.Dart';
import 'package:flutter_html/flutter_html.Dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
var html = "Follow<a class='sup'>pl</a> what was sent down to you from your Lord, and do not follow other guardians apart from Him. Little do <p class='h'>you remind yourselves</p><a class='f'><sup f=2437>1</a>.";
void _incrementCounter() {
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
_counter++;
});
}
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Invoke "debug painting" (press "p" in the console, choose the
// "Toggle Debug Paint" action from the Flutter Inspector in Android
// Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
// to see the wireframe for each widget.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Html(
data: html,
),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
flutter_webview_plugin プラグインを使用
例:
new WebviewScaffold(
url: new Uri.dataFromString('<html><body>hello world</body></html>', mimeType: 'text/html').toString()
カスタムRectangle内のWebview
final flutterWebviewPlugin = new FlutterWebviewPlugin();
flutterWebviewPlugin.launch(url,
fullScreen: false,
rect: new Rect.fromLTWH(
0.0,
0.0,
MediaQuery.of(context).size.width,
300.0,
),
);