https://pub.flutter-io.cn/packages/flutter_webview_plugin
/**
*
* const WebviewScaffold({
Key key,
this.appBar,
@required this.url,
this.headers,//
this.withJavascript,//是否允许执行js代码
this.clearCache,//
this.clearCookies,//
this.enableAppScheme,//
this.userAgent,//
this.primary = true,//
this.persistentFooterButtons,//
this.bottomNavigationBar,//
this.withZoom,//是否允许网页缩放
this.withLocalStorage,//是否允许LocalStorage
this.withLocalUrl,//
this.scrollBar,//是否显示滚动条
this.supportMultipleWindows,//
this.appCacheEnabled,//
this.hidden = false,//
this.initialChild,//
this.allowFileURLs,//
this.resizeToAvoidBottomInset = false,//
this.invalidUrlRegex,//
this.geolocationEnabled//
})
*/
import 'package:flutter/material.dart';
import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';
import 'package:http/http.dart' as http;
class Widget_WebView_Page extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return Widget_WebView_State();
}
}
class Widget_WebView_State extends State<Widget_WebView_Page>
with SingleTickerProviderStateMixin {
FlutterWebviewPlugin flutterWebviewPlugin = FlutterWebviewPlugin();
var title = "WebView组件";
var tabs;
TabController controller;
var choiceIndex = 0;
//获取h5页面标题
Future<String> getWebTitle() async {
String script = 'window.document.title';
var title = await
flutterWebviewPlugin.evalJavascript(script);
setState(() {
this.title = title;
print('#################### $title');
});
}
//获取h5页面标题
Future<String> getWebTitle2({String url}) async {
var client = http.Client();
client
.get(url)
.then(
(response) {
String title = RegExp(
r"<[t|T]{1}[i|I]{1}[t|T]{1}[l|L]{1}[e|E]{1}(\s.*)?>([^<]*)</[t|T]{1}[i|I]{1}[t|T]{1}[l|L]{1}[e|E]{1}>")
.stringMatch(response.body);
if (title != null) {
title =
title.substring(title.indexOf('>') + 1, title.lastIndexOf("<"));
} else {
title = "";
}
print("#################### " + title);
})
.catchError(
(error) {
print(error);
})
.whenComplete(client.close,);
}
@override
void initState() {
super.initState();
/**
* 监听web页加载状态
*/
flutterWebviewPlugin.onStateChanged.listen((
WebViewStateChanged webViewState) async {
// setState(() {
// title = webViewState.type.toString();
// });
switch (webViewState.type) {
case WebViewState.finishLoad:
handleJs();
getWebTitle();
break;
case WebViewState.shouldStart:
break;
case WebViewState.startLoad:
break;
case WebViewState.abortLoad:
break;
}
});
/**
* 监听页面加载url
*/
flutterWebviewPlugin.onUrlChanged.listen((String url) {
// getWebTitle(url: url);
// setState(() {
// title = url;
// });
});
/**
* 监听x轴滑动距离
* 好像没什么用
*/
// flutterWebviewPlugin.onScrollXChanged.listen((double offsetX) {
// title = offsetX.toString();
// });
// flutterWebviewPlugin.onScrollYChanged.listen((double offsetY) {
// title = offsetY.toString();
// });
tabs = <Widget>[
Tab(
child: GestureDetector(
child: Text("刷新"),
onTap: () {
flutterWebviewPlugin.reload();
},
),
),
Tab(
child: GestureDetector(
child: Text("返回"),
onTap: () {
flutterWebviewPlugin.goBack();
},
),
),
Tab(
child: GestureDetector(
child: Text("加载指定url"),
onTap: () {
flutterWebviewPlugin.reloadUrl("https://www.360.com");
},
),
),
];
controller =
TabController(initialIndex: 0, length: tabs.length, vsync: this);
}
@override
Widget build(BuildContext context) {
return WebviewScaffold(
url: "http://www.baidu.com",
//默认加载地址
appBar: AppBar(
title: Text(title),
backgroundColor: Colors.grey,
leading: GestureDetector(
child: Icon(Icons.arrow_back),
onTap: () {
flutterWebviewPlugin.close();
},
),
bottom: TabBar(
tabs: tabs,
controller: controller,
indicatorColor: Colors.red,
),
actions: <Widget>[
],
),
bottomNavigationBar: BottomNavigationBar(
items: [
BottomNavigationBarItem(
icon: Icon(Icons.home),
title: Text(
"首页", /*style: TextStyle(color: Color(0xff333333)),*/),
activeIcon: Icon(
Icons.home,
color: Color(0xffDE331F),
// size: 30.0,
),
backgroundColor: Color(0xffff0000),
),
BottomNavigationBarItem(
icon: Icon(Icons.devices_other),
title: Text(
"其他", /*style: TextStyle(color: Color(0xff333333)),*/),
activeIcon: Icon(
Icons.devices_other,
color: Color(0xffDE331F),
// size: 30.0,
),
backgroundColor: Color(0xffff0000),
),
],
currentIndex: choiceIndex,
fixedColor: Color(0xffDE331F),
// iconSize: 30.0,
// type: BottomNavigationBarType.fixed,
onTap: (index) {
if (index == 0) {
setState(() {
choiceIndex = 0;
flutterWebviewPlugin.reloadUrl("https://www.qq.com/");
});
} else {
setState(() {
flutterWebviewPlugin.reloadUrl("https://www.alipay.com/");
choiceIndex = 1;
});
}
}
),
scrollBar: false,
withZoom: false,
);
}
@override
void dispose() {
flutterWebviewPlugin.dispose();
super.dispose();
}
void handleJs() {
flutterWebviewPlugin.evalJavascript(
"abc(${title}')")
.then((result) {
});
}
}
/**
*
* const WebviewScaffold({
Key key,
this.appBar,
@required this.url,
this.headers,//
this.withJavascript,//是否允许执行js代码
this.clearCache,//
this.clearCookies,//
this.enableAppScheme,//
this.userAgent,//
this.primary = true,//
this.persistentFooterButtons,//
this.bottomNavigationBar,//
this.withZoom,//是否允许网页缩放
this.withLocalStorage,//是否允许LocalStorage
this.withLocalUrl,//
this.scrollBar,//是否显示滚动条
this.supportMultipleWindows,//
this.appCacheEnabled,//
this.hidden = false,//
this.initialChild,//
this.allowFileURLs,//
this.resizeToAvoidBottomInset = false,//
this.invalidUrlRegex,//
this.geolocationEnabled//
})
*/
