webview_page.dart
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import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:one_key/utils/event_bus.dart';
import 'package:one_key/widgets/app_bar.dart';
import 'package:one_key/widgets/system_app_bar.dart';
import 'package:webview_flutter/webview_flutter.dart';
class WebViewPage extends StatefulWidget {
@override
_WebViewPageState createState() => _WebViewPageState();
}
class _WebViewPageState extends State<WebViewPage> {
final Completer<WebViewController> _controller =
Completer<WebViewController>();
@override
void initState() {
super.initState();
// Enable hybrid composition.
if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
}
@override
Widget build(BuildContext context) {
return Scaffold(
// We're using a Builder here so we have a context that is below the Scaffold
// to allow calling Scaffold.of(context) so we can show a snackbar.
appBar: SystemAppBar(
'一键订',
onTap: () {
EventBus().emit('changeStatusColor');
Navigator.of(context).pop();
},
),
body: Builder(builder: (BuildContext context) {
return WebView(
initialUrl: 'https://support.qq.com/product/152856',
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (WebViewController webViewController) {
_controller.complete(webViewController);
},
onProgress: (int progress) {
print('WebView is loading (progress : $progress%)');
},
javascriptChannels: <JavascriptChannel>{
_toasterJavascriptChannel(context),
},
navigationDelegate: (NavigationRequest request) {
if (request.url.startsWith('https://www.youtube.com/')) {
print('blocking navigation to $request}');
return NavigationDecision.prevent;
}
print('allowing navigation to $request');
return NavigationDecision.navigate;
},
onPageStarted: (String url) {
print('Page started loading: $url');
},
onPageFinished: (String url) {
print('Page finished loading: $url');
},
gestureNavigationEnabled: true,
// backgroundColor: const Color(0x00000000),
);
// return WebView(
// initialUrl: "https://support.qq.com/product/152856",
// javascriptMode: JavascriptMode.unrestricted,
// onWebViewCreated: (WebViewController webViewController) {
// _controller.complete(webViewController);
// },
// // TODO(iskakaushik): Remove this when collection literals makes it to stable.
// // ignore: prefer_collection_literals
// javascriptChannels: <JavascriptChannel>[
// _toasterJavascriptChannel(context),
// ].toSet(),
// navigationDelegate: (NavigationRequest request) {
// if (request.url.startsWith('https://www.youtube.com/')) {
// print('blocking navigation to $request}');
// return NavigationDecision.prevent;
// }
// print('allowing navigation to $request');
// return NavigationDecision.navigate;
// },
// onPageStarted: (String url) {
// print('Page started loading: $url');
// },
// onPageFinished: (String url) {
// print('Page finished loading: $url');
// },
// gestureNavigationEnabled: true,
// );
}),
);
}
JavascriptChannel _toasterJavascriptChannel(BuildContext context) {
return JavascriptChannel(
name: 'Toaster',
onMessageReceived: (JavascriptMessage message) {
Scaffold.of(context).showSnackBar(
SnackBar(content: Text(message.message)),
);
});
}
}