在Flutter上...我试图在所有支持滚动的可用容器中添加Webview，但在Android上不起作用。
ListView(
shrinkWrap: true,children: <Widget>[
Text("hiiiiiiiiiiiii "),Text("hiiiiiiiiiiiii "),Expanded(
child: WebView(
key: Key("webview1"),debuggingEnabled: true,javascriptMode: JavascriptMode.unrestricted,initialUrl: "https://flutter.dev/")),],)
如果您想将可滚动的WebView放在其他窗口小部件之间，并且WebView将是可滚动的，而其他窗口小部件则不是可滚动的，那么只需将ListView for Column更改为这样：
Column(
children: <Widget>[
Text("hiiiiiiiiiiiii "),Text("hiiiiiiiiiiiii "),Container(
height: 300,child: WebView(
key: Key("webview1"),debuggingEnabled: true,javascriptMode: JavascriptMode.unrestricted,initialUrl: "https://flutter.dev/")
),)
但是，如果您想在WebView上添加一些可滚动的小部件，请尝试 CustomScrollView或SliverList。
您能说出您要做出什么确切的逻辑吗？
附加项：
如果要在其中具有可滚动区域和一些WebView，则必须知道WebView的高度：
ListView(
physics: ClampingScrollPhysics(),children: <Widget>[
Text("hiiiiiiiiiiiii "),ConstrainedBox(
constraints: BoxConstraints(maxHeight: 10000),child: WebView(
gestureRecognizers: Set()
..add(
Factory<VerticalDragGestureRecognizer>(
() => VerticalDragGestureRecognizer(),),// or null
),key: Key("webview1"),initialUrl: "https://flutter.dev/")),],);
您可以动态获得的WebView的高度，灵感在这里： https://gist.github.com/PonnamKarthik/877a90917a576ecff613d5169680d02c
,谢谢您提供解决方案的要诀。github.com/ PonnamKarthik / 877a90917a576ecff613d5169680d02c
问题已解决，现在我们可以在父级可滚动容器内添加Webview。
导入'dart：convert';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Code Sample',builder: (BuildContext context,Widget navigator) {
return MyStatelessWidget();
},);
}
}
class MyStatelessWidget extends StatefulWidget {
MyStatelessWidget({Key key}) : super(key: key);
@override
_MyStatelessWidgetState createState() => _MyStatelessWidgetState();
}
class _MyStatelessWidgetState extends State<MyStatelessWidget> {
List<WebViewController> _listController = List();
List<double> _heights =
List<double>.generate(htmlStrings.length,(int index) => 20.0);
@override
Widget build(BuildContext context) {
return Scaffold(
body: ListView.builder(
shrinkWrap: true,itemCount: htmlStrings.length,itemBuilder: (context,index) {
return Container(
height: _heights[index] ?? 100.0,child: WebView(
initialUrl:
'data:text/html;base64,${base64Encode(const Utf8Encoder().convert(htmlStrings[index]))}',onPageFinished: (some) async {
double height = double.parse(await _listController[index]
.evaluateJavascript(
"document.documentElement.scrollHeight;"));
setState(() {
_heights[index] = height;
});
},onWebViewCreated: (controller) async {
_listController.add(controller);
},);
},);
}
}
final List<String> htmlStrings = [
'''<p>Table shows some compounds and the name of their manufacturing process</p>
<table style="border-collapse: collapse; width: 100%; height: 85px;" border="1">
<tbody>
<tr style="height: 17px;">
<td style="width: 50%; text-align: center; height: 17px;">Compounds/Elements</td>
<td style="width: 50%; text-align: center; height: 17px;">Manufacture process</td>
</tr>
<tr style="height: 17px;">
<td style="width: 50%; height: 17px;">Nitric acid</td>
<td style="width: 50%; height: 17px;">Ostwald's process</td>
</tr>
<tr style="height: 17px;">
<td style="width: 50%; height: 17px;">Ammonia</td>
<td style="width: 50%; height: 17px;">Haber's process</td>
</tr>
<tr style="height: 17px;">
<td style="width: 50%; height: 17px;">Sulphuric acid</td>
<td style="width: 50%; height: 17px;">Contact process</td>
</tr>
<tr style="height: 17px;">
<td style="width: 50%; height: 17px;">Sodium</td>
<td style="width: 50%; height: 17px;">Down's process</td>
</tr>
</tbody>
</table>''','''<p>\(L=[M{L }^{2 }{T }^{-2 }{A }^{-2 }]\)</p>
<p>\(C=[{M }^{-1 }{L }^{-2 }{T }^{4 }{A }^{2 }]\)</p>
<p>\(R=[M{L }^{2 }{T }^{-3 }{A }^{-2 }]\)</p>
<p>\(\therefore \frac {R}{L}=\frac{[M{L }^{2 }{T }^{-2 }{A }^{-2 }]}{[M{L }^{2 }{T }^{-3 }{A }^{-2 }]}=[T]\)</p>''','''<p>Displacement(s)\(=\left(13.8\pm0.2\right)m\)</p>
<p>Time(t)\(=\left(4.0\pm0.3\right)s\)</p>
<p>Velocity(v)\(=\frac{13.8}{4.0}=3.45m{s}^{-1}\)</p>
<p>\(\frac{\delta v}{v}=\pm\left(\frac{\delta s}{s}+\frac{\delta t}{t}\right)=\pm\left(\frac{0.2}{13.8}+\frac{0.3}{4.0}\right)=\pm0.0895\)</p>
<p>\(\delta v =\pm0.0895*3.45=\pm0.3\)(rounding off to one place of decimal)</p>
<p>\(v=\left(3.45\pm0.3\right)m{s}^{-1}\)</p>''','''<p>The only real numbers satisfying \(x^2=4\) are 2 and -2. But none of them satisfy the final condition,\(x+2=3\). So,there is no real number such that these conditions are met. Hence this is null set.</p>
<p>Note that,for \(x\) to be a memner of \(\{x:p(x),q(x)\}\), <em><strong>both</strong></em> \(p(x)\) and \(q(x)\) should be true.</p>''',];
制作一个完整的可滚动小部件，其中包含WebView（具有动态高度）以及其上方和下方的其他容器。所有这些都应在父窗口小部件内滚动
请确保已正确安装flutter软件包：webview_flutter: ^1.0.5。
1.create Future fxn
`String hight;
double webHight =400; //default some value
Future funcThatMakesAsyncCall() async{
var result =
await controller.evaluateJavascript('document.body.scrollHeight');
//here we call javascript for get browser data
setState(() {
hight = result;
},);
}
`
2。我们使用SingleChildScrollView
scrollDirection：Axis.vertical，
3。内部使用Column
4。最后，我们使用Conatiner
在Container内，我们使用WebView
此处Container代码
`Container(
height: webHight+20,child: WebView(
initialUrl: widget.url,onPageFinished: (webhight)async{
await funcThatMakesAsyncCall();
setState((){
webHight= double.parse(hight);
});
},onWebViewCreated: (WebViewController webViewController) {
controller = webViewController;
},`