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。
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：
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。
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,right: BorderSide(color: Colors.black54,color: Colors.orange)])))
我还尝试过将Expanded的{{1}}父级替换为
WebView，我遇到相同的问题。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。
非常感谢您的见解。
解决方法
您可以在下面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
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,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,right: BorderSide(color: Colors.black54,color: Colors.orange)
]))),);
}
}