防止Flutter WebView溢出水平滚动轮播? [英] Prevent Flutter WebView from Overflowing a Horizontally Scrolling Carousel?
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问题描述
我正在使用Flutter中的 Perspectives Pageview 库来实现水平轮播.当我只用图像或文本等渲染常规Containers时，一切正常.
I am using using the Perspectives Pageview library in Flutter to implement a horizontal carousel. Everything works fine when I am just rendering regular Containers with images or text, etc.
但是，当我嵌入WebView时，它会溢出其父容器之外，并在移动Widget时调整大小:
However, when I embed a WebView, it overflows beyond its parent Container, and resizes upon moving the Widget around:
我不确定是什么原因造成的，以及如何解决它，使其像其他元素一样留在父级内部.
I am unsure of what causes this and how I may fix it so that it stays inside the parent, like other elements.
我的代码:
Container(
child: Center(
// Adding Child Widget of Perspective PageView
child: PerspectivePageView(
hasShadow: true, // Enable-Disable Shadow
shadowColor: Colors.black12,
children: <Widget>[
Container(
child: Column(
children: [
Expanded(
child: Container(
color: Colors.black54,
child: Container(
color: Colors.white,
child: Column(
children: [
Expanded(
child: WebViewPlus(
onWebViewCreated: (controller) {
this._controller = controller;
controller
.loadString(_htmlForCardsList[0]);
},
javascriptMode: JavascriptMode.unrestricted,
),
)
],
)),
padding: EdgeInsets.all(2),
),
),
Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"View Next",
style: TextStyle(
fontSize: 24.0,
fontWeight: FontWeight.w400,
color: Colors.orange),
),
],
),
height: 60,
decoration: BoxDecoration(
color: Colors.white,
border: Border(
top: BorderSide(color: Colors.black54, width: .3),
bottom: BorderSide(color: Colors.black54, width: 1.5),
left: BorderSide(color: Colors.black54, width: 1.5),
right: BorderSide(color: Colors.black54, width: 1.5),
),
),
),
],
),
color: Colors.orange)])))
我还尝试用
替换WebView的Expanded父级
Container(
width: 300,
height: 200,
child: WebViewPlus(
...
，我遇到了同样的问题.横向滚动轮播时，WebView的大小会发生变化，这与轮播中包含的其他内容不同.
and I encounter the same issue. Upon horizontally scrolling the carousel, the WebView size changes, unlike other content contained within the Carousel.
非常感谢您的见解.
推荐答案
您可以在
下复制粘贴运行完整代码
您可以使用软件包 https://pub.dev/packages/flutter_inappwebview
代码段
You can copy paste run full code below
You can use package https://pub.dev/packages/flutter_inappwebview
code snippet
Expanded(
child: InAppWebView(
initialUrl: url,
initialHeaders: {},
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
debuggingEnabled: true,
),
),
onWebViewCreated:
(InAppWebViewController controller) {
webView = controller;
print("onWebViewCreated");
webView.loadData(
data: _htmlForCardsList[0]);
},
工作演示
完整代码
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:perspective_pageview/perspective_pageview.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
InAppWebViewController webView;
String url = "about:blank";
double progress = 0;
bool status = false;
@override
dispose() {
webView.stopLoading();
super.dispose();
}
List<String> _htmlForCardsList = [
'''<!DOCTYPE html><html><body><h1>My First Heading</h1><p>My first paragraph.</p></body></html>'''
];
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Container(
child: Center(
// Adding Child Widget of Perspective PageView
child: PerspectivePageView(
hasShadow: true, // Enable-Disable Shadow
shadowColor: Colors.black12,
children: <Widget>[
Container(
child: Column(
children: [
Expanded(
child: Container(
color: Colors.black54,
child: Container(
color: Colors.white,
child: Column(
children: [
Expanded(
child: InAppWebView(
initialUrl: url,
initialHeaders: {},
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
debuggingEnabled: true,
),
),
onWebViewCreated:
(InAppWebViewController controller) {
webView = controller;
print("onWebViewCreated");
webView.loadData(
data: _htmlForCardsList[0]);
},
onLoadStart:
(InAppWebViewController controller,
String url) {
print("start $status");
status = false;
},
onLoadStop:
(InAppWebViewController controller,
String url) {
print("stop $status");
status = true;
},
onProgressChanged:
(InAppWebViewController controller,
int progress) {
this.progress = progress / 100;
},
),
)
],
)),
padding: EdgeInsets.all(2),
),
),
Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"View Next",
style: TextStyle(
fontSize: 24.0,
fontWeight: FontWeight.w400,
color: Colors.orange),
),
],
),
height: 60,
decoration: BoxDecoration(
color: Colors.white,
border: Border(
top: BorderSide(color: Colors.black54, width: .3),
bottom: BorderSide(color: Colors.black54, width: 1.5),
left: BorderSide(color: Colors.black54, width: 1.5),
right: BorderSide(color: Colors.black54, width: 1.5),
),
),
),
],
),
color: Colors.orange)
]))),
);
}
}
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