[英]Flutter Webview - How to add more link or element on pages?
我對 flutter 很陌生,我正在為 covid-19 制作一個配套應用程序。 :>:>
布局有很多按鈕,我想利用 Webview function 為不同的場景加載不同的 web 頁面。
當前main.dart是這樣的:
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 就像:
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);
},
),
);
}
}
我在那個場景中只有 1 個鏈接頁面,但現在我有 20 多個 web 地址需要在我的移動頁面上鏈接。 所以我需要打開對應於不同頁面的那個。 抱歉這個愚蠢的問題,但我如何在該代碼中添加更多這樣的鏈接?
您可以在下面復制粘貼運行完整代碼
您可以使用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
完整代碼
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);
},
),
);
}
}
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