Flutter Webview - 如何在页面上添加更多链接或元素?
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【中文标题】Flutter Webview - 如何在页面上添加更多链接或元素?【英文标题】:Flutter Webview - How to add more link or element on pages? 【发布时间】:2020-10-13 15:55:36 【问题描述】:我对 Flutter 很陌生,我正在为 covid-19 制作一个配套应用程序。 :>:>
布局有很多按钮,我想利用 Webview 功能为不同的场景加载不同的网页。
当前的 main.dart 是这样的:
import 'package:flutter/material.dart';
import 'package:flutter_webview_project/webviewFlutter.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget
@override
Widget build(BuildContext context)
return MaterialApp(
theme: ThemeData(primarySwatch: Colors.deepPurple),
home: MyHomePage(),
);
class MyHomePage extends StatelessWidget
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text("Covid-19"),
),
body: Center(
child: RaisedButton(
color: Colors.deepPurple,
child: Text("Daily Threats",
style: TextStyle(color: Colors.white),
),
onPressed: ()
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => WebViewFlutter(
websiteName: "CV19 Map",
websiteUrl: "https://www.esp.com/",
)));
,
),
),
);
我的 webviewFlutter.dart 是这样的:
import 'dart:async';
import 'package:flutter/material.dart';
//Webview in flutter
import 'package:webview_flutter/webview_flutter.dart';
class WebViewFlutter extends StatefulWidget
final String websiteName;
final String websiteUrl;
const WebViewFlutter(Key key, this.websiteName, this.websiteUrl)
: super(key: key);
@override
_WebViewFlutterState createState() => _WebViewFlutterState();
class _WebViewFlutterState extends State<WebViewFlutter>
final Completer<WebViewController> _controller =
Completer<WebViewController>();
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(
title: Text(widget.websiteName),
),
body: WebView(
initialUrl: widget.websiteUrl,
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (WebViewController webViewController)
_controller.complete(webViewController);
,
),
);
我在那个场景中只有 1 个链接页面,但现在我有 20 多个网址需要在我的移动页面上链接。所以我需要打开对应于不同页面的那个。抱歉这个愚蠢的问题,但我如何在该代码中添加更多类似的链接?
【问题讨论】:
【参考方案1】:您可以在下面复制粘贴运行完整代码
你可以使用ListView.builder
ListView.builder(
padding: const EdgeInsets.all(8),
itemCount: siteList.length,
itemBuilder: (BuildContext context, int index)
return Center(
child: RaisedButton(
color: Colors.deepPurple,
child: Text(
"Daily Threat $siteList[index].name",
style: TextStyle(color: Colors.white),
),
onPressed: ()
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => WebViewFlutter(
websiteName: siteList[index].name,
websiteUrl: siteList[index].url,
)));
,
),
);
),
工作演示
完整代码
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:webview_flutter/webview_flutter.dart';
class Site
String name;
String url;
Site(this.name, this.url);
void main() => runApp(MyApp());
class MyApp extends StatelessWidget
@override
Widget build(BuildContext context)
return MaterialApp(
theme: ThemeData(primarySwatch: Colors.deepPurple),
home: MyHomePage(),
);
class MyHomePage extends StatelessWidget
List<Site> siteList = [
Site(name: "CV19 Map", url: "https://www.esp.com/"),
Site(name: "google", url: "https://www.google.com/"),
Site(name: "flutter", url: "https://flutter.dev/")
];
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text("Covid-19"),
),
body: ListView.builder(
padding: const EdgeInsets.all(8),
itemCount: siteList.length,
itemBuilder: (BuildContext context, int index)
return Center(
child: RaisedButton(
color: Colors.deepPurple,
child: Text(
"Daily Threat $siteList[index].name",
style: TextStyle(color: Colors.white),
),
onPressed: ()
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => WebViewFlutter(
websiteName: siteList[index].name,
websiteUrl: siteList[index].url,
)));
,
),
);
),
);
class WebViewFlutter extends StatefulWidget
final String websiteName;
final String websiteUrl;
const WebViewFlutter(Key key, this.websiteName, this.websiteUrl)
: super(key: key);
@override
_WebViewFlutterState createState() => _WebViewFlutterState();
class _WebViewFlutterState extends State<WebViewFlutter>
final Completer<WebViewController> _controller =
Completer<WebViewController>();
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(
title: Text(widget.websiteName),
),
body: WebView(
initialUrl: widget.websiteUrl,
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (WebViewController webViewController)
_controller.complete(webViewController);
,
),
);
【讨论】:
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